JP2012050883A - Method for producing disposable paper diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a disposable paper diaper which is excellent in fittability when worn, facilitates a wearing operation and has a bonding portion making the appearance of the diaper product excellent and bonded at both side portions of a front body and a back body.SOLUTION: This production method includes: a step of producing a continuous sheet W1 for an exterior sheet; a separately arranging step of separately arranging the continuous sheet W1 for the exterior sheet in a line width direction after cutting the sheet W1 along a line direction in the center of the width direction; an elastically stretchable member cutting step of finely cutting an elastically stretchable member from the outer surface of the diaper for the separately arranged continuous sheet W1 for the exterior sheet; a mechanically engaging type fastener means attaching step of detachably attaching the plurality of mechanically engaging type fastener means to the outer surface of the continuous sheet W for exterior sheet; and a cutting step of bonding the absorbent body 10 onto the separately arranged continuous sheet W1 for exterior sheet in a state where the front body cut region regularly faces the back body cut region, and cutting the body 10 into respective products.

Description

The present invention is excellent in fitting property, a disposable paper om one manufacturing method improving the appearance of the product.

  Conventionally, an absorbent main body in which an absorbent body is interposed between a liquid-permeable top sheet and a back sheet, and a waist part and a waist part part between an upper layer nonwoven fabric and a lower layer nonwoven fabric in each of a front body and a back body A paper diaper composed of an outer sheet in which a large number of elastic elastic members are disposed along the diaper width direction because elastic elastic members for forming shirring are arranged on the front and back bodies. It was manufactured by the so-called cross flow method.

  A diaper manufactured by such a lateral flow method is one in the line width direction in order to simplify the manufacturing process when cutting into individual products, as described in Patent Documents 1 and 2, for example. In general, the front body and the back body are formed to have the same width so that the book can be cut with a straight line.

  Here, the manufacturing process of a conventional diaper according to the lateral flow method will be described in detail. As shown in FIG. 19, in the case of a paper diaper 50 in which the exterior sheet is integrally formed from the back body to the front body, the upper layer of the exterior sheet 51 Between the non-woven fabric 51A and the lower layer non-woven fabric 51B, there is elasticity in a region corresponding to the waist portion 52F and the waistline portion 53F of the front body F and a region corresponding to the waist portion 53 and the waistline portion 54 of the back body B, respectively. The elastic members 55F... 56F... 55B... 56B are arranged, and the waist elastic elastic members 56F of the front body F and the elastic elastic members 56B of the back body B to which the absorbent main body 58 is joined. After the leg is cut into pieces, the leg holes are cut around the legs, the absorbent main body 58 is joined, and then folded back at the center of the diaper in the longitudinal direction, and the front body F and the back body B are both It joined at the junction 59 parts, thereafter, are cut into individual products.

  Further, as shown in FIG. 20, when the outer sheet is a paper diaper 60 in which the outer sheet for the rear body and the outer sheet for the front body are formed as separate sheets, the outer sheet 61 for the rear body and the front body are used. In the same manner as in the manufacturing process of the paper diaper 50, the elastic stretch members 66F, 67F,..., 66B are applied to the exterior sheet web having a width dimension arranged in the line width direction. ..., 67B ... and after the predetermined cutting step, the outer sheet web for the rear body and the outer sheet web for the front body are cut and separated at the center in the width direction of the line. After passing through the cutting process and the bonding process of the absorbent main body 69, the diaper is folded back at the center in the longitudinal direction, and the front body F and the back body B are joined at the joints 70, 70 on both sides. They are cut of the product.

JP 2002-35029 A JP 2002-248127 A Japanese Patent Application No. 2005-283250

  However, since the shrinkage rate of the front body and the back body of the paper diaper manufactured by such a method is substantially equal, the joint portion located on the side portion in both the product state before wearing and the mounted state after wearing Protrudes outward. The joint that protrudes outward in the side part in the product state before wearing is preferable, for example, because the alignment when packaging a plurality of sheets is beautiful, but the joint part is outward in the side part in the wearing state after wearing. If it protrudes, it affects the line silhouette of the body, and a clean appearance cannot be obtained.

  On the other hand, in recent years, as shown in Patent Document 2, in a paper diaper manufactured by a cross flow method, a diaper is worn by adopting a structure in which a front body and a back body are joined by a mechanical engagement type fastener means. A pants-type disposable paper diaper that can be used in the manner of a tape-type diaper in which a front body and a back body are joined after being applied to a person's body has been proposed.

  However, when the front body and the back body are joined simply by providing fastener means on both sides of a conventional pant-type diaper in which the contraction rate between the front body and the back body is substantially equal, Since the tapes are fastened at positions that are apart from each other in the vicinity, the workability is worse than that of the tapes fastened at a position close to the normal abdomen.

  Furthermore, as shown in the above-mentioned Patent Document 3, in the manufacture of a disposable diaper by the cross flow method, the side part extending flaps extending outward from the joint part are formed on both side parts where the front body and the back body are joined. When the flank extension flap is provided with a mechanical engagement type fastener means that can be engaged with the outer surface of the front body, when the diaper is worn and the fit to the body is not sufficient, the side part Picking the extension flap, pulling it to the front body side and joining it to the outer surface of the exterior sheet, it is possible to adjust the size arbitrarily, or use the tape type diaper procedure by breaking the side joint Possible pants-type disposable paper diapers are also being proposed.

  Also in this case, simply by providing fastener means on both sides of a conventional pant-type diaper in which the contraction rate of the front and back bodies is made substantially equal, the side extension flaps on both sides are drawn. When joining to the outer surface of the exterior sheet, the adjustment is performed in the vicinity of the left and right side portions, so that the workability is poor as compared with the conventional tape stopper that can be adjusted in the vicinity of the abdomen.

  As such a solution, it can be considered that the shrinkage rate of the back body provided with the fastener means is set low, and the shrinkage rate of the front body provided with the adherend portion is set high so that the fastener means is brought closer to the abdomen. . However, such means may cause a problem that the stretchability of the back body cannot be sufficiently obtained and the fitting property is deteriorated. In addition, if the front body is contracted more than necessary, there is a problem that wrinkles are shifted to the adherend and the fastening performance of the fastener means is deteriorated.

  On the contrary, if the shrinkage rate of the back body is high and the shrinkage rate of the front body is low, the back body will shrink too much and the workability at the time of fastening will become very bad, and the front body will become large and the appearance will The product is unbalanced.

  In addition to the above problems, there is also a problem that when the tape type diaper is used by being broken at the side joint, it is not necessarily broken according to the weld line of the joint.

  On the other hand, in the above-mentioned Patent Document 3, a side extension flap that extends outward from a joint where the front body and the back body are joined is provided, and on the front side of the side extension flap, Since the mechanical engagement type fastener means that can be engaged with the outer surface of the front body is provided, the side extension flaps extend to both sides in the product state before use and when the diaper is mounted, The appearance was bad.

Therefore, a main object of the present invention is excellent in fitting property when worn, as well as facilitate the mounting operation, a disposable paper diaper having a joint portion which is joined at both side portions of the front body and back body around you good appearance of the product The object is to provide a method for efficient production .

In order to solve the above-mentioned problem, as the present invention according to claim 1, an absorbent main body in which an absorbent body is interposed between a liquid-permeable top sheet and a back sheet, and the absorbent main body are integrally joined. After the exterior sheet is joined to the back body side of the absorbent main body, a large number of elastic stretch members are disposed along the waist portion and the waistline portion between the upper layer nonwoven fabric and the lower layer nonwoven fabric. A body exterior sheet and a front body exterior sheet in which a number of elastic elastic members are disposed between the upper nonwoven fabric and the lower nonwoven fabric along the waist portion and the waistline portion, and joined to the front body side of the absorbent main body. It consists of two divided sheets consisting of
All the elastic elastic members arranged in the waist part of the front body are cut finely over the entire length, and the exterior body sheet for the back body is larger in width than the exterior body sheet for the front body in a state of extending in the width direction. In the product state in which the contraction force of the elastic elastic member is set, the width dimension of the outer sheet for the front body and the width dimension of the exterior sheet for the rear body are formed substantially equal,
In the waist part of the exterior sheet for the back body, most of the elastic elastic member disposed in the region overlapping the absorbent main body is finely cut,
A plurality of mechanically engaging fastener means having a hook element engageable with the exterior sheet on one surface side are detachably provided on the outer surface of the exterior sheet. In the exterior sheet for the front body, a diaper is provided. The machine in which the elastic elastic member is cut from the outer surface side of the sheet, and at the same time as the cutting process, a seal portion is formed in the cutting region of the elastic elastic member, and a plurality of holes are formed in the outer surface of the exterior sheet The engagement surface treatment of the engagement type fastener means has been performed,
The front body exterior sheet and the back body exterior sheet are joined at both sides to produce a pants-type disposable paper diaper having a waist opening and a pair of left and right leg openings,
Two continuous nonwoven fabrics having a width dimension that combines the diaper longitudinal dimension of the rear body exterior sheet and the diaper longitudinal dimension of the front body exterior sheet are fed out into a line, and the line between these continuous nonwoven fabrics A step of producing a continuous sheet for an exterior sheet by interposing a number of elastic elastic members corresponding to the waist elastic elastic member and the waist elastic elastic member along the direction;
After separating the continuous sheet for the exterior sheet along the line direction at the center in the width direction, a separation arrangement step of separating the line in the line width direction;
Against one side of the outer sheet continuous sheet described above spaced, and the front body cutting region of the resilient and elastic members applied to said front body, a back body cutting region after resilient and elastic members for applying to said back body The back body is set alternately at predetermined intervals in the line direction, and at the position facing the front body cutting region on one side of the exterior sheet continuous sheet with respect to the other side of the exterior sheet continuous sheet. Cutting the front body of the elastic elastic member to be applied to the front body at a position facing the rear body cutting area on one side of the continuous sheet for the exterior sheet A step of cutting the elastic elastic member that sets the region and finely cuts the elastic elastic member of each cutting region from the outer surface side of the diaper;
A mechanically engaged fastener means adhering step for removably attaching a mechanically engaged fastener means having a hook element engageable with the exterior sheet on one surface side to the outer surface of the exterior sheet;
In the state where the front body cutting region and the back body cutting region are facing each other, the absorbent main body joining step for joining the absorbent main body onto the spaced-apart outer sheet continuous sheet;
Cutting with which the contraction force of the elastic elastic member is applied and the front body and the back body are joined to each other in the folded state at the center part in the longitudinal direction of the diaper and then cut into individual product shapes. Process,
A disposable paper diaper manufacturing method is provided.

In the present invention according to claim 1, in the pants-type disposable paper diaper, all elastic elastic members arranged in the waist portion of the front body are cut finely over the entire length, and the exterior body sheet for the back body is arranged in the width direction. the width dimension than the outer sheet for the front body in a state of being extended is set large, the outer sheet for the back body when wearing, will be disposed toward both sides and ventral from the wearer's waist, In addition to being excellent in fit at the time of mounting, the mounting work can be facilitated.

Furthermore, in the product state in which the contraction force of the elastic elastic member is applied, the width dimension of the outer body sheet for the front body and the width dimension of the exterior sheet for the rear body are formed approximately equal to each other. The appearance of the product is improved when the front body and the back body are combined and contributes to the improvement of product value.

  In addition, the product has a product value in that the line and silhouette of the body looks beautiful because the joint between the front and back bodies, which protrudes outward in the product's side, moves to the abdomen when worn. Contribute to improvement.

On the other hand, in the present invention, a plurality of mechanically engaging fastener means having hook elements that can be engaged with the exterior sheet on one surface side are detachably provided on the outer surface of the exterior sheet, and the front body The elastic sheet is cut from the outer surface side of the diaper, and at the same time as the cutting process, a seal portion is formed in the cutting region of the elastic elastic member, and a large number are formed on the outer surface of the outer sheet. The engagement surface treatment of the mechanical engagement type fastener means in which the opening is formed is performed .

  Since a plurality of mechanically engaged fastener means having a hook element that can be engaged with the exterior sheet on one surface side are provided detachably with respect to the outer surface of the exterior sheet, the pants type is formed. In the disposable paper diaper, when it is desired to adjust the size appropriately like a tape-type disposable paper diaper, after removing the mechanical engagement type fastener means, tearing the joints on both sides of the front body and the back body, etc. This is easily achieved by drawing the body to the front body and sticking the mechanically engaged fastener means so as to straddle the back body side edge and the front body. Thereby, it is excellent in fit at the time of mounting | wearing, and can mount | wear now easily. The mechanical engagement type fastener means can be used as a so-called disposal tape for rounding and fixing a diaper after use.

Further, disconnects the resilient and elastic members of the outer sheet for the front body from the outer surface side of the diaper, the cutting and at the same time, the sealing portion is formed in the cutting region of the resilient and elastic members, and a number of open to the outer surface of the outer sheet by forming the hole, as the engagement surface when fastening the mechanical engagement fastener means on the outer surface of the outer sheet for the front body, it is possible to form a small engagement surface of the superior and fuzz engaging force In addition, when the mechanically engaged fastener means is fixed to the outer surface of the front body exterior sheet, the hook element of the fastener means is engaged with the opening to further enhance the engaging force of the fastener means. Become so.

In the present invention according to the first aspect, it is possible to manufacture the paper diaper effectively. In the present invention, after cutting the continuous sheet for exterior sheets along the line direction at the center in the width direction, and then performing the separation step of separating the continuous sheet in the line width direction, the cutting step of the elastic elastic member in the predetermined region is performed. It has come to be.

As the present invention according to claim 2 , comprising an absorbent main body in which an absorbent body is interposed between a liquid-permeable top sheet and a back sheet, and an exterior sheet joined integrally with the absorbent main body, The exterior sheet is a rear body exterior sheet in which a large number of elastic elastic members are disposed along the waist and waist area between the upper nonwoven fabric and the lower nonwoven fabric, and joined to the back body side of the absorbent main body, and the upper layer A two-part sheet comprising a front body exterior sheet which is arranged between a nonwoven fabric and a lower layer nonwoven fabric along a waist portion and a waist portion and is joined to the front body side of the absorbent main body. Configured,
All the elastic elastic members arranged in the waist part of the front body are cut finely over the entire length, and the exterior body sheet for the back body is larger in width than the exterior body sheet for the front body in a state of extending in the width direction. In the product state in which the contraction force of the elastic elastic member is set, the width dimension of the outer sheet for the front body and the width dimension of the exterior sheet for the rear body are formed substantially equal,
In the waist part of the exterior sheet for the back body, most of the elastic elastic member disposed in the region overlapping the absorbent main body is finely cut,
A plurality of mechanically engaging fastener means having a hook element engageable with the exterior sheet on one surface side are detachably provided on the outer surface of the exterior sheet. In the exterior sheet for the front body, a diaper is provided. The machine in which the elastic elastic member is cut from the outer surface side of the sheet, and at the same time as the cutting process, a seal portion is formed in the cutting region of the elastic elastic member, and a plurality of holes are formed in the outer surface of the exterior sheet The engagement surface treatment of the engagement type fastener means has been performed,
The front body exterior sheet and the back body exterior sheet are joined at both sides to produce a pants-type disposable paper diaper having a waist opening and a pair of left and right leg openings,
Two continuous nonwoven fabrics having a width dimension that combines the diaper longitudinal dimension of the rear body exterior sheet and the diaper longitudinal dimension of the front body exterior sheet are fed out into a line, and the line between these continuous nonwoven fabrics A step of producing a continuous sheet for an exterior sheet by interposing a number of elastic elastic members corresponding to the waist elastic elastic member and the waist elastic elastic member along the direction;
With respect to the continuous sheet for the exterior sheet, a first cut defining area set by doubling the cutting area of the elastic elastic member applied to the front body in the line width direction, and the back body The cutting area of the elastic elastic member to be applied is set alternately with a second cutting definition area set by doubling the line width direction in the line direction at a predetermined interval, and these cutting images are formed from the outer surface side of the diaper. A step of cutting the elastic elastic member to finely cut the elastic elastic member of the formation region;
After cutting the continuous sheet for the exterior sheet along the line direction at the center in the width direction, the continuous sheet for the exterior sheet is separated from the continuous sheet for the other side while being spaced apart in the line width direction. A step of separating the half of the elastic stretch member to be applied to the front body and the cutting region of the elastic stretch member to be applied to the back of the body, and a separation arrangement step of facing the front body.
A mechanically engaged fastener means adhering step for removably attaching a mechanically engaged fastener means having a hook element engageable with the exterior sheet on one surface side to the outer surface of the exterior sheet;
An absorptive main body joining step for joining the absorptive main body onto the spaced apart continuous sheet for exterior sheets;
Cutting with which the contraction force of the elastic elastic member is applied and the front body and the back body are joined to each other in the folded state at the center part in the longitudinal direction of the diaper and then cut into individual product shapes. Process,
A disposable paper diaper manufacturing method is provided.

The present invention of the second aspect, with respect to the invention according to the first aspect, Ru der shows a more preferred embodiment the paper om one according to the present invention. In the present invention, after cutting the continuous sheet for the exterior sheet along the line direction at the center in the line width direction, before performing the separation arrangement step of arranging the separation sheet in a predetermined state, the cutting step of the elastic elastic member in the predetermined region is performed. To be done. For this reason, compared with the said invention of Claim 9, it is not necessary to provide the cutting | disconnection apparatus of an elastic elastic member in each of the continuous sheet | seat for exterior sheets spaced apart.

The present invention according to claim 3 , comprising an absorbent main body in which an absorbent body is interposed between a liquid-permeable top sheet and a back sheet, and an exterior sheet joined integrally with the absorbent main body, The exterior sheet is a rear body exterior sheet in which a large number of elastic elastic members are disposed along the waist and waist area between the upper nonwoven fabric and the lower nonwoven fabric, and joined to the back body side of the absorbent main body, and the upper layer A two-part sheet comprising a front body exterior sheet which is arranged between a nonwoven fabric and a lower layer nonwoven fabric along a waist portion and a waist portion and is joined to the front body side of the absorbent main body. Configured,
All the elastic elastic members arranged in the waist part of the front body are cut finely over the entire length, and the exterior body sheet for the back body is larger in width than the exterior body sheet for the front body in a state of extending in the width direction. In the product state in which the contraction force of the elastic elastic member is set, the width dimension of the outer sheet for the front body and the width dimension of the exterior sheet for the rear body are formed substantially equal,
In the waist part of the exterior sheet for the back body, most of the elastic elastic member disposed in the region overlapping the absorbent main body is finely cut,
A plurality of mechanically engaging fastener means having a hook element engageable with the exterior sheet on one surface side are detachably provided on the outer surface of the exterior sheet. In the exterior sheet for the front body, a diaper is provided. The machine in which the elastic elastic member is cut from the outer surface side of the sheet, and at the same time as the cutting process, a seal portion is formed in the cutting region of the elastic elastic member, and a plurality of holes are formed in the outer surface of the exterior sheet The engagement surface treatment of the engagement type fastener means has been performed,
The front body exterior sheet and the back body exterior sheet are joined at both sides to produce a pants-type disposable paper diaper having a waist opening and a pair of left and right leg openings,
Two continuous nonwoven fabrics having a width dimension that combines the diaper longitudinal dimension of the rear body exterior sheet and the diaper longitudinal dimension of the front body exterior sheet are fed out into a line, and the line between these continuous nonwoven fabrics A step of producing a continuous sheet for an exterior sheet by interposing a number of elastic elastic members corresponding to the waist elastic elastic member and the waist elastic elastic member along the direction;
A shape in which the cutting region of the elastic elastic member applied to the front body and the cutting region of the elastic elastic member applied to the back body are coupled to the continuous sheet for the exterior sheet in a state of facing each other. A first cut defining area and a second cut defining area having a shape obtained by inverting the first cut defining area in the line width direction are set at a predetermined interval in the line direction, and the diaper A cutting step of the elastic elastic member that finely cuts the elastic elastic member of the cutting definition region from the outer surface side ;
After cutting so as to divide the cutting region of the elastic elastic member applied to the front body and the cutting region of the elastic elastic member applied to the rear body at the intermediate portion in the width direction of the continuous sheet for the exterior sheet A separation arrangement step of arranging separation in the line width direction;
A mechanically engaged fastener means adhering step for removably attaching a mechanically engaged fastener means having a hook element engageable with the exterior sheet on one surface side to the outer surface of the exterior sheet;
An absorptive main body joining step for joining the absorptive main body onto the spaced apart continuous sheet for exterior sheets;
Cutting with which the contraction force of the elastic elastic member is applied and the front body and the back body are joined to each other in the folded state at the center part in the longitudinal direction of the diaper and then cut into individual product shapes. Process,
A disposable paper diaper manufacturing method is provided.

The present invention of the third aspect, a second method for manufacturing a disposable diaper according to the present invention, a method for manufacturing the above SL paper diaper effectively.

As the present invention according to claim 4 , comprising an absorbent main body in which an absorbent body is interposed between a liquid-permeable front sheet and a back sheet, and an exterior sheet joined integrally with the absorbent main body, 1 which is integrally formed from the front body to the back body, and in each region of the front body and the back body, a large number of elastic elastic members are disposed along the waist portion and the waist portion between the upper layer nonwoven fabric and the lower layer nonwoven fabric. Composed of sheets,
All the elastic elastic members arranged in the waist part of the front body are cut finely over the entire length, and the exterior sheet constituting the back body is more than the exterior sheet constituting the front body in a state of extending in the width direction. The width dimension of the exterior sheet constituting the front body and the width dimension of the exterior body constituting the back body are substantially equal in a product state in which the width dimension is set to be large and the contraction force of the elastic elastic member is applied. Formed into
In the waist part of the exterior sheet constituting the back body, most of the elastic elastic member disposed in the region overlapping the absorbent main body is finely cut,
In the exterior sheet constituting the front body, a plurality of mechanically engaged fastener means having hook elements that can be engaged with the exterior sheet on one surface side are detachably provided with respect to the outer surface of the exterior sheet. The elastic stretchable member was cut from the outer surface side of the diaper, and simultaneously with this cutting, a seal portion was formed in the cutting region of the elastic stretchable member, and a number of openings were formed on the outer surface of the exterior sheet. An engagement surface treatment of the mechanical engagement fastener means is performed,
It is a manufacturing method of a disposable paper diaper that is a pants-type in which a waist opening and a pair of left and right leg openings are formed by joining the front body and the back body of the exterior sheet on both sides,
A continuous upper layer non-woven fabric and a continuous lower layer non-woven fabric are fed out into a line, and a large number of elastic stretches along the waist and waist area between the upper layer non-woven fabric and the lower layer non-woven fabric in the respective regions of the front body and the back body. A step of producing a continuous sheet for an exterior sheet by interposing a member;
A first cut defining region having a shape in which a cutting region of the elastic elastic member applied to the front body and a cutting region of the elastic elastic member applied to the rear body are opposed to each other, and the first cutting A second cut defining area having a shape obtained by inverting the defined area in the line width direction is set at a predetermined interval in the line direction, and the elastic elastic members of these cut defined areas are finely defined from the outer surface side of the diaper. Cutting the elastic elastic member to be cut;
A mechanically engaged fastener means adhering step for removably attaching a mechanically engaged fastener means having a hook element engageable with the exterior sheet on one surface side to the outer surface of the exterior sheet;
A leg circumference cutting step for cutting so as to punch out a portion corresponding to the leg circumference,
An absorbent main body joining step for joining the absorbent main body onto a continuous sheet for exterior sheets;
Cutting with which the contraction force of the elastic elastic member is applied and the front body and the back body are joined to each other in the folded state at the center part in the longitudinal direction of the diaper and then cut into individual product shapes. Process,
A disposable paper diaper manufacturing method is provided.

The present invention of the fourth aspect, a third manufacturing method of the disposable diaper according to the present invention, a method for manufacturing the above SL paper diaper effectively.

As the present invention according to claim 5 , before the mechanical engagement type fastener means sticking step, the front body and the back body of the exterior sheet are formed on both sides of the exterior sheet for the front body or the exterior sheet constituting the front body. A perforation forming step for forming a perforation extending from the waist opening to the leg opening at a position that is inward of the joint with the machine and at a position that crosses the mechanical engagement fastener means in the longitudinal direction. The manufacturing method of the disposable paper diaper in any one of Claims 1-4 is provided.

The present invention according to claim 5 is characterized in that, in both side portions of the exterior body for the front body or the exterior sheet constituting the front body, the inner body is located at a position on the inner side than the joint between the front body and the back body of the exterior sheet. It is a manufacturing method for manufacturing the disposable paper diaper in which the perforation from a waist opening part to the said leg opening part was formed.

In the present invention according to claim 6 , in place of the cutting step, after cutting into individual product shapes, the contraction force of the elastic elastic member is applied, and the front part is folded at the center in the longitudinal direction of the diaper. The manufacturing method of the disposable paper diaper in any one of Claims 1-5 made into the cutting process which joins the both sides of a back and a back body with the said junction part.

In the present invention described in claim 6, in place of the cutting step of claims 1 to 5 , after cutting into individual product shapes, the front body and the back body are joined at the joint. .

As the present invention according to claim 7 , in the cutting step of the elastic stretchable member, the cutting region of the elastic stretchable member applied to the front body is set on both sides of the adjacent back body beyond the cutting line of the front body. The manufacturing method of the disposable paper diaper in any one of Claims 1-6 expanded to the junction part with the exterior sheet | seat for front body or the exterior sheet which comprises a front body.

As described above in detail, according to the present invention, disposable disposable diapers having joint portions joined to both sides of the front body and the back body that have excellent fit at the time of mounting, facilitate the mounting work, and improve the appearance of the product. Can be efficiently manufactured.

BRIEF DESCRIPTION OF THE DRAWINGS It is a product external view of the disposable paper diaper 1 which concerns on the 1st form example of this invention. It is the development view. It is the III-III arrow directional view of FIG. It is the IV-IV arrow line view of FIG. FIG. 3 is an equivalent view taken along line III-III in FIG. 2 in a product state. It is a disassembled perspective view of the absorptive main body 10, the back body exterior sheet 20, and the front body exterior sheet 30. The assembly procedure of the continuous sheet W1 for exterior sheets is shown, (A) is a schematic view, and (B) is a plan view thereof. It is explanatory drawing of the operation | movement aspect of an embossing heat roll and an opposing roll. (a), (b) is explanatory drawing which shows the example of the embossing pattern of a staggered arrangement | sequence. It is explanatory drawing which shows the example of a grid | lattice-like embossing pattern. It is explanatory drawing which shows the engagement state to the opening 35 of the hook element 43b. It is an expanded view of the disposable paper diaper 1 which concerns on the 2nd form example of this invention. 4 is an exploded perspective view of the absorbent main body 10 and the exterior sheet 3. FIG. It is a manufacturing procedure figure which shows the 1st manufacturing method which concerns on the disposable paper diaper 1. FIG. (A) is the principal part enlarged view, (B) is a top view of the disposable paper diaper 1 in the product state after cutting. It is a manufacturing procedure figure which shows the modification of a 1st manufacturing method. It is a manufacturing procedure figure which shows the 2nd manufacturing method which concerns on the disposable paper diaper 1. FIG. It is a manufacturing procedure figure which shows the 3rd manufacturing method which concerns on the disposable paper diaper 1. FIG. It is a manufacturing procedure figure (the 1) which shows the manufacturing method of the conventional disposable paper diaper. It is a manufacturing procedure figure (the 2) which shows the manufacturing method of the conventional disposable paper diaper.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[First example of disposable diaper 1]
FIG. 1 is a product state external view of a disposable paper diaper 1 according to the present invention, FIG. 2 is a development view thereof, FIG. 3 is a view taken along line III-III in FIG. 2, and FIG. FIG. In addition, the adhesion | attachment site | part is clearly shown by x mark in the required site | part of drawing.

  A disposable paper diaper 1 according to the present invention (hereinafter simply referred to as a paper diaper) is an absorbent body made of cotton-like pulp between a liquid-permeable surface sheet 11 made of nonwoven fabric or the like and a leak-proof sheet 12 made of polyethylene or the like. 13 and the absorbent body 10 are integrally joined with the absorbent body 10 to form at least the front body F and the back body B, and in each region of the front body F and the back body B, It is comprised from exterior sheet | seats 20 and 30 by which many elastic elastic members were arrange | positioned along the waist part and trunk | drum circumference part between the upper layer nonwoven fabric and the lower layer nonwoven fabric. And the front body F and the back body B of the said exterior | packing sheets 20 and 30 are joined in the junction parts 40 and 40 of both sides, The pants type | mold by which the waist opening part and the left-right paired leg opening part were formed, It has become.

  In the paper diaper 1 according to the first embodiment of the present invention, the outer sheet has a large number of elastic elastic members 26, 28,... Along the waist portion 23 and the waist portion 24 between the upper nonwoven fabric 21A and the lower nonwoven fabric 21B. A large number of elastic elastic members are disposed along the waist portion 21 and the waistline portion 22 between the rear body exterior sheet 20 that is disposed and joined to the back body side of the absorbent main body 10, and the upper nonwoven fabric 31A and the lower nonwoven fabric 31B. 25 ..., 27 ... are arranged, and is composed of a two-part sheet composed of a front body exterior sheet 30 joined to the front body side of the absorbent main body 10.

  More specifically, the rear body exterior sheet 20 includes two upper-layer nonwoven fabrics 21A and 21B made of nonwoven fabric, and a waist elastic elastic member 26 disposed around the waist opening 23 therebetween, And a plurality of waist elastic elastic members 28, 28... Arranged along the horizontal direction at intervals in the vertical direction of the waist portion 24.

  The front body exterior sheet 30 includes two upper layer nonwoven fabrics 31A and 31B made of nonwoven fabric, and waist elastic elastic members 25, 25,... Are provided with a plurality of waist elastic elastic members 27, 27,... Arranged at intervals in the vertical direction of the portion 22 along the horizontal direction, and a hook element 43b that can be engaged with the exterior sheet on one surface side. A plurality of mechanically engaging fastener means 43 are provided to be removable from the outer surfaces of both side portions of the front body exterior sheet 30. In the present embodiment, the mechanical engagement type fastener means 43 is provided on the outer surfaces of the both side portions of the front body exterior sheet 30, but for example, the center portion outer surface of the front body exterior sheet 30 and the rear body What is necessary is just to be provided in the outer surface of the exterior sheets 20 and 30, such as the outer surface of the both sides of the exterior sheet 20. Further, it is desirable that the mechanical engagement type fastener means 43 is provided in one or two or more pairs with respect to the outer surfaces of both side portions of the front body exterior sheet 30.

  And in this invention, all the elastic elastic members 27 ... arrange | positioned in the trunk periphery part 22 of the said front body sheet | seat 30 are cut | disconnected finely over the full length, and the said back body sheet | seat 20 is the state extended in the width direction. In the product state in which the width dimension is set larger than the front body exterior sheet 30 and the contraction force of the elastic elastic member is applied, the width dimension of the front body exterior sheet 30 and the rear body exterior sheet 20 The width dimension is substantially equal. It should be noted that most of the elastic elastic members 28 arranged in the region overlapping the absorbent main body 10 in the waist portion 24 of the back body exterior sheet 20 may be finely cut.

  Here, the elastic elastic members 27 arranged in the waist part 22 of the front body sheet 30 are finely cut “all along the entire length” to mean that the waist part 22 of the front body sheet 30 is cut. 80% or more, preferably 90% or more, of the elastic elastic members 27. If it is within the above numerical range, for example, the elastic elastic member disposed at the lower end of the waistline portion is not finely cut, or the side part of the absorbent main body and a part of the front body side edge part are not cut. Even if it is a case, it can be said that it is cut | disconnected finely "all over the full length."

  In addition, the elastic elastic members 27 and 28 are “finely cut” means that the elastic elastic members are cut finely at predetermined intervals by discontinuous means described in detail later, and the elastic force of the elastic elastic members does not function. It is to make a state. In order to achieve such a state, for example, the elastic elastic member is cut at intervals of 1 to 10 mm, preferably at intervals of 1 to 5 mm.

  Further, the above-mentioned “in the product state in which the contraction force of the elastic elastic member is applied, the width dimension of the exterior body sheet 30 for the front body and the width dimension of the exterior sheet 20 for the back body are formed substantially equal”. The both sides of the front body exterior sheet 30 and the both sides of the back body exterior sheet 20 are formed at substantially the same position, and not only when it is determined that the width dimensions are identical in appearance, Even when there are irregularities on the edge, the difference in the average width obtained by measuring a plurality of locations is within a predetermined range (0 to 30 mm (within 15 mm on one side), preferably 0 to 20 mm (within 10 mm on one side), more preferably 0 to 10 mm (within 5 mm on one side)).

  Furthermore, in the waist part 24 of the outer body sheet 20 for the back body, “the majority of the elastic elastic members 28... Disposed in the region overlapping with the absorbent main body 10” means that the absorbent main body 10 is cut finely. It is not necessary that the overlapping region is cut exactly, and the elastic elastic members 28 may be left uncut at the peripheral portion of the overlapping region. Specifically, 70% or more, preferably 80% or more of the elastic elastic members 28... Of the overlapping region of the absorbent main body 10 may be finely cut.

  The upper layer nonwoven fabric 21A and the lower layer nonwoven fabric 21B are preferably bonded with a hot melt adhesive or the like over substantially the entire surface of the region where the elastic elastic member is disposed. By doing so, since the elastic elastic member cut | disconnected finely does not move between sheets, it is preferable. Further, in order to further secure the elastic elastic member, a hot melt adhesive is applied to the peripheral surface of the elastic elastic member by a known direct application method such as control seam application, omega application or sure wrap application, May be strengthened. If the adhesive strength is excessively strengthened, the elastic elastic member cut finely may cause the exterior sheet to shrink finely, thereby impairing the appearance. In such a case, the hot melt adhesive may be directly applied to the elastic elastic member only at the site where the adhesive force needs to be strengthened.

  Hereinafter, the structure of the absorptive main body 10, the rear body exterior sheet 20, and the front body exterior sheet 30, the assembly structure, and the manufacturing method thereof will be described in order.

(Structure of the absorbent main body 10)
As shown in FIG. 2, the absorbent body 13 used in the illustrated example has a substantially square shape in plan view, and its width dimension does not give the wearer a feeling of wrinkle by hitting the crotch portion. It is a dimension width. The absorbent body 13 is surrounded by an enveloping sheet 14 made of a sheet of crepe paper or non-woven fabric in order to maintain the shape and improve the diffusibility of the body fluid that has passed through the liquid-permeable surface sheet 11. The absorbent body 13 is preferably a fiber aggregate made of piled pulp or tow containing an absorbent polymer. Examples of fibers constituting the fiber assembly (hereinafter simply referred to as tow constituent fibers) include polysaccharides or derivatives thereof (cellulose, cellulose ester, chitin, chitosan, etc.), synthetic polymers (polyethylene, polypropylene, polyamide, polyester, Polylactamides, polyvinyl acetate, etc.), and cellulose esters and cellulose are particularly preferred. Examples of the superabsorbent polymer include carboxymethyl cellulose, polyacrylic acid and salts thereof, acrylate polymer cross-linked product, starch-acrylic acid graft copolymer, starch-acrylonitrile graft copolymer hydrolyzate, polyoxyethylene cross-linked product Products, crosslinked products of water-swellable polymers such as polyethylene oxide and polyacrylamide, or copolymers of isobutylene and maleic acid are preferably used. As the absorber 13, it is particularly preferable to use an airlaid absorber that can reduce the bulk.

  As the liquid-permeable surface sheet 11 covering the surface side (skin contact surface side) of the absorbent body 13, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. The material fibers that make up the nonwoven fabric can be synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters, and polyamides, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Of these processing methods, the spunlace method is excellent in terms of flexibility and the spunbond method is excellent in drapeability, and the thermal bond method and the air-through method are excellent in terms of being bulky and soft. When a large number of through holes are formed in the liquid-permeable surface sheet 11, urine and the like are quickly absorbed, and the dry touch property is excellent. The liquid-permeable top sheet 11 extends to the back side of the absorbent body 13 around the side edge of the absorbent body 13.

  The leak-proof sheet 12 covering the back surface side (non-skin contact surface side) of the absorbent body 13 is made of a liquid-impervious plastic sheet such as polyethylene or polypropylene, but in recent years has moisture permeability from the viewpoint of preventing stuffiness. Those are preferably used. This water-impervious / breathable sheet is a microporous sheet obtained by, for example, melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. If the sheet thickness is the same, the rigidity is lower than that of the non-porous sheet, which is superior in terms of flexibility.

  On the other hand, as the gathered nonwoven fabric 15 forming the three-dimensional gathered BS, as shown in FIGS. 3 and 4, a nonwoven fabric made into a double sheet by folding is used, and the absorbent body 13 engulfed by the liquid-permeable surface sheet 11 is used. These side edges are further wound from the upper side and extended to the back side of the absorbent body 13 to be bonded. More specifically, the gathered nonwoven fabric 15 has a three-dimensional gather BS forming portion in the middle part in the longitudinal direction of the paper diaper shown in FIG. 3, and the range from the middle part in the width direction to the back side of the absorbent body 13 is hot melt. Adhered by an adhesive or the like, and at the front and rear end portions in the longitudinal direction, as shown in FIG. 4, the section from the intermediate portion in the width direction to the one side end edge is adhered in a range extending to the back surface side of the absorber 13. The portion forming the three-dimensional gather BS is bonded with a hot melt adhesive or the like while being folded at the upper surface portion of the absorbent body 13.

  In the gathered nonwoven fabric 15 formed of the double sheet nonwoven fabric, a plurality of thread-like elastic elastic members 16, 16... Are disposed at the standing tip side portion, and in the vicinity of the side edge portion of the absorbent body 13. A thread-like elastic expansion / contraction member 17 is disposed, and a thread-like elastic expansion / contraction member 18 is disposed on the back side of the absorber 13. The tip elastic elastic members 16, 16... Are mainly used to form a three-dimensional gather BS by raising a nonwoven fabric portion protruding from the absorber side edge portion by elastic elastic force. 17 and 18, as shown in the product state diagram of FIG. 5, mainly due to its elastic expansion and contraction force, the side portion of the absorber 13 is bent, and the base end side portion of the three-dimensional gather BS is It is for composition. The standing height HL of the absorber 13 from the bent portion to the absorber side edge is 5 to 30 mm, preferably 20 to 30 mm. When the standing height HL is less than 5 mm, it is too short to make it difficult to bend the absorber side, and it is impossible to ensure sufficient fit to the skin. Further, when the standing height HL exceeds 30 mm, there arises a problem that the standing length is too long to bend effectively.

  The leak-proof sheet 12 enters the double sheet-shaped gather nonwoven fabric 15 and constitutes a leak-proof wall on the lower end side of the three-dimensional gather BS as shown in FIG. As the leak-proof sheet 12, it is desirable to use an opaque sheet so as not to cause browning such as defecation and urine. As the opacification, a plastic film and a pigment and filler such as calcium carbonate, titanium oxide, zinc oxide, white carbon, clay, talc and barium sulfate are preferably used. In addition, the leak-proof sheet | seat inside the said gathers nonwoven fabric 15 may interpose the sheet | seat different from the leak-proof sheet 12 which covers the back surface side of the said absorber 13. FIG.

  As said thread-like elastic expansion-contraction members 16-18, materials, such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, polyester, and natural rubber, which are usually used, are used. Can be used. Further, in order to make it difficult to see from the outside, it is preferable that the thickness is 925 dtex or less and the tension is 150 to 350%. Instead of the thread-like elastic elastic member, a tape-like elastic elastic member having a certain width may be used.

  In the same manner as the liquid-permeable surface sheet 11, the material fiber constituting the gathered nonwoven fabric 15 is not limited to synthetic fibers such as polyethylene or polypropylene, such as olefins, polyesters, and polyamides, but also regenerated fibers such as rayon and cupra, Non-woven fabric obtained by an appropriate processing method such as a spunbond method, a thermal bond method, a melt blown method, a needle punch method, etc. can be used. Therefore, it is preferable to use a nonwoven fabric that suppresses the basis weight and has excellent air permeability. Further, with respect to the gathered nonwoven fabric 15, in order to prevent the transmission of urine and the like, to prevent fogging and to improve the feel to the skin (dry feeling), a silicon-based, paraffin-metal-based, alkylchromic chromoid water-repellent It is desirable to use a water-repellent non-woven fabric coated with such as.

  In particular, in the first embodiment, as shown in FIG. 3, the nonwoven fabric sheet 19 is provided on the outer surface of the absorbent main body 10 at the crotch portion between the outer sheet 20 for the back body and the exterior sheet 30 for the front body. It is preferable to arrange. In this case, the nonwoven fabric sheet 19 is made of the same material as the lower layer nonwoven fabrics 21B and 31B of the rear body exterior sheet 20 and the front body exterior sheet 30. Thereby, the boundary of the said nonwoven fabric sheet 19, and the exterior sheet 20 for back bodies, and the exterior sheet 30 for front bodies becomes inconspicuous. The nonwoven fabric sheet 19 may be made of a material different from the lower layer nonwoven fabrics 21B and 31B of the rear body exterior sheet 20 and the front body exterior sheet 30. Since the nonwoven fabric sheet 19 located in the crotch portion is often rubbed between the wearer's crotch, it is preferable to use a nonwoven fabric material that is superior in flexibility and wear resistance to the front and back body sheets. In order to improve the abrasion resistance of the nonwoven fabric sheet 19, the nonwoven fabric sheet 19 and the leak-proof sheet 12 can be integrated by embossing from the outer surface side of the nonwoven fabric sheet 19.

(Structure of rear body exterior sheet 20)
As shown in FIGS. 2 and 6, the outer body sheet 20 for the back body is a two-layer nonwoven fabric sheet composed of an upper layer nonwoven fabric 21A and a lower layer nonwoven fabric 21B, and between the upper layer nonwoven fabric 21A and the lower layer nonwoven fabric 21B. A waist elastic elastic member 26 and a plurality of waist elastic elastic members 28 are disposed along the horizontal direction at intervals in the vertical direction of the waist part 23 and the waist part 24, and are elastic in the horizontal direction. Sex has been granted. The exterior sheet 20 for the back body is bonded to the back body B side of the absorbent main body 10.

  The waist elastic members 26 are a plurality of thread rubber-like elastic members disposed at intervals in the vertical direction in the vicinity of the waist opening edge, and apply elastic force so as to tighten around the waist of the body. To put a paper diaper on the body. The waist elastic elastic members 26 are made of rubber thread in the illustrated example. However, for example, a tape-like elastic member or a net-like elastic member may be used.

  The waist elastic member group 28... Is a rubber thread that is disposed along the horizontal direction at intervals in the vertical direction over a range from the upper part to the lower part except for the waist part in the side part joining range. These elastic elastic members apply horizontal stretching force to the waist portions of the front body F and the back body B, respectively, and bring the disposable diaper into close contact with the body. The boundary between the waist elastic members 26 and the waist elastic members 28 is not necessarily clear. For example, even if the number of elastic members arranged in the horizontal direction with an interval in the vertical direction on the back body B cannot be specified, some on the upper side function as waist elastic members, and the remaining elasticity It is only necessary that the member functions as a waist elastic member.

  Further, the waist elastic members 28 may be continuously arranged so as to cross over the absorbent main body 10, but preferably prevents the absorber 13 from being constricted as shown in the figure. Therefore, it is preferable to cut the elastic elastic member that crosses the absorbent main body 10 to make it discontinuous.

  In order to cut and discontinue the elastic elastic members 28, the cutting methods described in JP 2002-35029 A, JP 2002-178428 A, and JP 2002-273808 A are preferably employed. The The elastic stretchable member cutting method described in the publication basically has a convex portion on the surface after the exterior sheet continuous sheet W1 to be the exterior body exterior sheet 20 is manufactured as shown in FIG. The outer sheet continuous sheet W1 is passed between an embossed heat roll 44 in which a plurality of the embossed heat rolls 44 are arranged and a counter roll 45 facing the embossed heat roll 44, and the elastic elastic member of the outer sheet continuous sheet W1 is Cutting is performed by at least one of pressurization and heating between the convex portion of the embossed heat roll 44 and the opposing roll 45.

  As shown in FIG. 8 (a), the opposing roll 45 may be separated from the embossed heat roll 44 so as to contact only the embossed portion 44a of the embossed heat roll 44. As shown in (b), when the embossed portion 44a is lowered, it comes into contact with the opposing roll 45. The embossed portion 44a is present in at least two places in order to form a first cut defining region and a second cut defining region. The plurality of embossed portions 44a may be provided on one embossed heat roll 44, or may be provided with multi-stage embossed heat rolls 44 ... and opposed rolls 45 ... provided separately on each embossed heat roll 44. You may be allowed to. In addition, the surface of the embossed portion 44a is provided with defined areas 44b corresponding to the front body cutting area DF and the back body cutting area DB, and the defined area 44b has a small size as illustrated in FIG. Convex portions 44 </ b> A to 44 </ b> D are further formed, and actually the front end surfaces of these convex portions 44 </ b> A to 44 </ b> D abut against the opposing roll 45.

  Examples of preferred emboss patterns are shown in FIGS. 9 (a) and 9 (b). FIG. 9A shows an emboss pattern in which a plurality of linear convex portions are arranged in a staggered manner. A row of convex portions arranged such that linear convex portions 44A having a length B1 and a width A1 are arranged at a distance N1 in the axial direction (black arrow direction) of the embossed heat roll 44, and the same length B1 as the convex portions 44A , Width A1 of the convex portions 44B, 44B in the circumferential direction of the embossing heat roll 44 (in the direction of the white arrow), the convex portion 44A is separated from the distance M1, and the lengthwise center line of the convex portion 44B is 2 / It is constituted by a pattern in which the rows of convex portions arranged so as to pass through the point N1 are alternately repeated. FIG. 9B shows a pattern in which rhombic convex portions are arranged in a staggered manner. A row of convex portions arranged such that the rhombic convex portions 44C and 44C having the major axis B2 and the minor axis A2 are arranged in the axial direction (black arrow direction) of the embossed heat roll 44 with a distance N2 therebetween, and the same as the convex portion 44C The rhombus-shaped convex portions 44D and 44D are in the circumferential direction of the embossed heat roll 44 (in the direction of the white arrow), the convex portion 44C is separated from the distance M2, and the short axis of the convex portion 44C corresponds to a point of 2 / N2. The pattern of the convex part group arrange | positioned so that it may consist of the pattern which repeated alternately.

  The length B1 of the linear protrusion and the long axis B2 of the rhombus are preferably in the range of 1 to 25 mm, more preferably 5 to 25 mm. Due to the staggered arrangement, the elastic member positioned between the convex portions 44A and 44A can be reliably cut by the convex portions 44B. If B1 or B2 is shorter than 1 mm, the elastic member may not be cut in some cases. If it is longer than 25 mm, the area of the seal portion becomes too large, and the touch may be deteriorated. Therefore, the range of N1 and N2 is also preferably 1 to 25 mm, and N1 is more preferably 3 to 25 mm. When the convex part is a rhombus, if the corners of the convex parts adjacent to each other in the roll circumferential direction overlap only slightly when viewed from the direction in which the elastic member is attached, the elastic member may escape from the seal part and cannot be cut. N2 is more preferably 3 to 10 mm.

  The width A1 of the linear protrusion and the short axis A2 of the rhombus are preferably 0.5 to 15 mm. If it is thinner than 0.5 mm, the elastic member may not be cut. If it is thicker than 15 mm, the area of the seal portion becomes too large, and the feeling of touch may deteriorate. For A2, the lower limit is more preferably 1 mm or more.

  The distance between the rows of the convex group is not particularly limited, but M1 or M2 is preferably 5 to 25 mm.

  In any case, the most important thing in this case is that the convex groups are arranged so that each of the elastic members to be cut is cut at a plurality of locations by the convex group. If necessary, the dimensions and arrangement of the projections are free.

  The shape of the convex portion is not limited to the above-mentioned linear shape and rhombus shape, but can be applied to diagonal lines, circular shapes, triangular shapes, star shapes, other polygonal shapes, and the like. It can also be changed according to each row of convex portions.

  With the above configuration, the elastic elastic member is cut, and a large number of small seal portions are formed on the upper layer nonwoven fabric and the lower layer nonwoven fabric other than the elastic elastic member, and the upper and lower sheets are joined in the cutting region. Since each seal part is spaced apart and small one by one, even if it is formed into a film by heat sealing, it does not cause discomfort to the wearer compared to the case of a long continuous line.

  Furthermore, in place of the embossed heat roll having the convex portions that are spaced apart in the above-described embodiment, as shown in FIG. 10, a concave group having a length of 1 to 25 mm and a width of 0.5 to 15 mm is provided. The thing which uses the embossed heat roll which has the grid | lattice-like convex part 44E whose width | variety is 0.5-5 mm is also proposed (other form). The grid-like convex portion 44E is formed by crossing a large number of crosspieces 44F, 44F,... In a grid pattern, and a space 44G surrounded by the crosspieces 44F is a concave portion (lattice). A3 is the width of the crosspiece and is preferably 0.5 to 5 mm. If it is too thick, the tactile sensation may be deteriorated. On the other hand, if it is thinner than 0.5 mm, it looks like a knife, and there is a possibility that both the upper and lower sheets are cut. The length of the lattice-shaped recess is N3, preferably 5 to 25 mm, more preferably 5 to 10 mm. The width | variety of a grid | lattice-like recessed part is M3, and 5-25 mm is preferable, More preferably, it is 5-10 mm. In FIG. 10, an oblique lattice is shown, but of course, a square or rectangular lattice may be used. In this embodiment, since it is sealed in a lattice shape, the elastic member can be cut reliably. Further, since the portion corresponding to the lattice recess 44G is not sealed, the sheet will not break. Furthermore, since a thin grid-like convex part exists in a certain area part, and it is mesh-like, the expansion-contraction member should just be cut | disconnected by any seal part. When sealing with a single blade, all the elastic members must be cut with a single blade, so it is necessary to seal strongly so that there is no elastic member that is not cut, and the sheet will break. However, in the above configuration, since the elastic member only needs to be cut at the seal portion, there is no need for a strong seal, and the sheet is not pressed and the sheet is not broken. . In addition, the lattice-like seal portion is soft to the wearer and has a beautiful appearance.

On the other hand, in the rear body exterior sheet 20, the product width L _B of the rear body B is the product of the front body exterior sheet 30 in a state of being developed in the width direction (a state where the contraction by the elastic elastic member is removed). While the width dimension is set to be larger than the width L _F , the width dimension of the front body exterior sheet 30 and the rear body exterior sheet 20 are substantially the same in a state where the contraction force by the elastic elastic member is applied. It is formed equally.

  In addition, the elastic elastic members 28 of the waist portion 24 arranged at the joint portions 40, 40 with the front body exterior sheet 30 are also finely cut at both side portions 42, 42 of the rear body exterior sheet 20. Is preferred. Thereby, both side parts 42 and 42 become the smooth fixed area | region where the junction parts 40 and 40 do not peel or distort. Moreover, in the product state in which the contraction force of the elastic elastic member is applied, both side edges of the rear body exterior sheet 20 and the front body exterior sheet 30 are easily formed substantially equally, and the appearance of the product is improved. The cutting range (K) of the both side portions 42 is 10 to 50 mm, preferably 15 to 30 mm.

  The constituent material of the upper layer nonwoven fabric 21A and the lower layer nonwoven fabric 21B of the back body exterior sheet 20 includes synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, and cotton. A nonwoven fabric obtained by an appropriate processing method such as a spunbond method, a thermal bond method, a melt blown method, or a needle punch method can be used. In addition, a core-sheath type bicomponent nonwoven fabric using a fiber having a high melting point as a core and a fiber having a low melting point as a sheath, or a nonwoven fabric made of a composite fiber such as a side-by-side fiber or a split fiber can be used. The bicomponent nonwoven fabric is preferable because it can be excellent in heat-fusibility. Moreover, when performing the cutting process of the elastic expansion-contraction member 27 ... from a diaper outer surface side, and making it an engaging part of the fastener means 43, especially the nonwoven fabric (lower layer nonwoven fabric 31B) of the outer surface side of the exterior sheet 30 for front body parts, It is preferable to use a bulky air-through nonwoven fabric using high-strength PET core fibers.

  The fineness of the upper nonwoven fabric 21A and the lower nonwoven fabric 21B is preferably 0.5 to 3.3 dtex for 80% or more of the constituent fibers, and 2.2 to 5.5 dtex if a strong engagement force is obtained. Considering the balance between the two, it is preferable to set to 2.2 to 3.3 dtex.

  In addition, it is preferable to use a material having high transparency so that the elastic elastic member is not noticeable after being cut finely.

(Structure of front body exterior sheet 30)
The front body exterior sheet 30 has substantially the same structure as the back body exterior sheet 20, and as shown in FIGS. 2 and 6, a two-layer nonwoven sheet composed of an upper nonwoven fabric 31A and a lower nonwoven fabric 31B. In the horizontal direction between the upper nonwoven fabric 31A and the lower nonwoven fabric 31B, various elastic elastic members 25, 27,... Are provided and provided with elasticity in the horizontal direction.

  A sewing machine that extends from the waist opening to the leg opening at a position on the inner side of the joint portion between the rear body exterior sheet 20 and the front body exterior sheet 30 at both side portions 42 and 42 of the front body exterior sheet 30. The eyes 47 and 47 may be formed. By forming the perforations 47, when using a pants-type diaper like a tape that can be arbitrarily adjusted in size, both sides of the front body can be easily torn from the perforations 47, 47. It becomes like this. In the waist portion 21, the waist elastic elastic members 25... Are cut by the perforation 47 by applying the perforation 47. At this time, it is desirable that the mechanical engagement type fastener means 43 is provided across the perforation 47. This prevents a situation where the front body exterior sheet 30 is accidentally torn from the perforation 47 during use as a pant-type diaper.

  Further, at least in the formation region of the perforations 47, 47, that is, on both side portions 42, 42 of the front body exterior sheet 30, the inner side of the rear body exterior sheet 20 and the front body exterior sheet 30 is connected. It is desirable that the elastic elastic member disposed in the region from the waist opening to the leg opening at the side position is finely cut by the discontinuous means of the elastic elastic member. This eliminates the problem that even if the perforation is formed, the presence of the elastic elastic member that crosses the perforation eliminates the problem that the perforation is not torn well, making it easier to remove the front body exterior sheet 30 from the perforation. To be able to tear.

  The mechanical joining type fastener means 43 is formed by fixing a hook element 43b on the surface side of a fastening base material 43a such as plastic, polylaminated nonwoven fabric, nonwoven fabric, paper, etc., and forming a hook portion and a knob portion, and the hook element 43b Is made of engagement pieces such as a letter shape, a J shape, a mushroom shape, and a T shape, and can be engaged with the outer surface (lower layer nonwoven fabric 31B) of the front body exterior sheet 30. Further, the mechanical joint type fastener means 43 may be affixed separately to the front body F with a target tape (female side fastener) and engaged therewith.

  Here, using the same cutting method as the cutting method for cutting the elastic elastic members 28 of the rear body exterior sheet 20, all of the front elastic elastic members 27 are cut over the entire length. In this way, by forming a large number of small seal groups or grid-like or linear seal parts on the front body by cutting, it is possible to simultaneously form a suitable engagement surface with excellent engagement force and less fuzz. it can. In this case, the total formation area of the seal portion is 5 to 50%, preferably 5 to 25%, and more preferably 5 to 15% of the entire area of the engagement surface. In addition, although a technology for forming an engagement portion made of a nonwoven fabric having excellent engagement force and less fuzz by forming a large number of small seal portions on the nonwoven fabric surface is known, in the present invention, In the surface, since the elastic elastic members 28... Finely cut are interposed between the upper layer nonwoven fabric 21A and the lower layer nonwoven fabric 21B, there are irregularities, and an engagement surface having better engagement force than the prior art is formed. be able to.

  Further, if the cutting process is performed from the outer surface side of the diaper and the engagement surface treatment of the mechanical engagement type fastener means 43 is performed, the engagement surface has an unevenness and has an excellent engagement force. Therefore, it is preferable. Further, by performing the cutting process of the elastic elastic member of the front body exterior sheet 30 from the outer surface side of the diaper, as shown in FIG. 11, a large number of openings 35, 35... Are formed on the outer surface of the front body exterior sheet 30. May be formed. Then, when the mechanically engaged fastener means 43, 43 are fastened to the outer surface of the front body exterior sheet 30, the hook elements 43b, 43b, ... of the fastener means are engaged with the apertures 35, so that the fastener means. The engagement force is further strengthened.

(Assembling paper diapers)
As shown in FIG. 6, the absorbent main body 10, the rear body exterior sheet 20, and the front body exterior sheet 30 are formed on the upper surface side of the rear body exterior sheet 20 and the front body exterior sheet 30. 10 are bonded and integrated by an adhesive such as hot melt. And the absorptive main body 10 is folded in the front-back direction by the folding line S, and the joining parts 40, 40 of the front body F and the joining parts 40, 40 of the back body B are joined by heat welding or hot melt adhesive. By doing so, the pants-type paper diaper 1 shown in FIG. 1 is assembled.
[Second example of paper diaper 1]
Next, a second embodiment of the disposable diaper 1 will be described in detail with reference to FIGS.

  As shown in the figure, the paper diaper 1 according to the second embodiment of the present invention is configured such that the exterior sheet 3 is integrally formed from the front body F to the back body B, and the front body F and the back body B are respectively formed. In a region, a paper diaper constituted by a single sheet in which a number of elastic elastic members 25 to 28 are disposed along the waist portions 21 and 23 and the waistline portions 22 and 24 between the upper layer nonwoven fabric 3A and the lower layer nonwoven fabric 3B. is there.

The exterior sheet 3 is disposed along the horizontal direction with an interval in the vertical direction between the waist elastic elastic members 25, 26, and the front body F and the back body B disposed around the waist opening. A plurality of waist elastic elastic members 27, 28,... Are provided, and the front body F and the back body B are joined by joints 40, 40 of both side parts 42, 42.
About another structure, it is the same as that of the paper diaper 1 of the said 1st form example description.

[First manufacturing method of disposable diaper 1]
The first manufacturing method of the paper diaper 1 is to manufacture the paper diaper 1 according to the first embodiment (a paper diaper 1 in which the exterior sheet is composed of a two-part sheet composed of the exterior sheet 20 for the back body and the exterior sheet 30 for the front body). It is a method to do.

  FIG. 14 is an assembly process diagram in the case of the lateral flow method in which the line direction is the paper diaper width direction. As shown in the figure, first, as a manufacturing process of a continuous sheet for exterior sheets, the diaper longitudinal dimension of the rear body exterior sheet 20 and the diaper longitudinal dimension of the front body exterior sheet 30 were matched. Two continuous nonwoven fabrics having a width dimension are fed out into a line, and a plurality of elastic elastic members corresponding to the waist elastic elastic members and the waist elastic elastic members are interposed between the continuous nonwoven fabrics along the line direction. The continuous sheet W1 for exterior sheets is manufactured.

  Next, as a cutting process of the elastic stretchable member, a first is set by doubling the cutting region DF of the elastic stretchable member applied to the front body F in the line width direction with respect to the continuous sheet W1 for the exterior sheet. A predetermined interval in the line direction between the cut defining area D2 of the elastic member and the second cut defining area D1 set by doubling the cut area DB of the elastic elastic member applied to the back body B in the line width direction. Are alternately set, and the elastic elastic members in the cutting definition regions D2,..., D1,.

  Then, as a separation arrangement step, the exterior sheet continuous sheet W1 is cut along the line direction at the center in the width direction, and then separated in the line width direction, and the exterior sheet continuous sheet is disposed on the other side. The cutting area DF of the elastic elastic member applied to the front body F and the cutting area DB of the elastic elastic member applied to the back body B are opposed to each other by shifting by 1/2 phase with respect to the continuous sheet for the exterior sheet. . Here, the separation distance of each continuous sheet for exterior sheets is an arrangement position of the developed state of the paper diaper 1 that is a product.

  And as a fastener means sticking process, it has a hook element 43b which can engage with an exterior sheet on one surface side between the cutting process of the elastic elastic member and the absorbent main body joining process. A plurality of means 43 are detachably attached to the outer surfaces of both side portions of the front body exterior sheet 30. In the fastener means attaching step, the mechanical engagement type fastener means 43 attached in this step does not interfere with the formation of the joint portion 40 described later and the perforation 47 described in detail in the second manufacturing method described later. As long as the elastic elastic member is cut, it may be applied at any appropriate stage between the cutting step and a cutting step described later.

  Furthermore, as a leg periphery part cutting process, the part used as a crotch is cut | disconnected along the concave leg periphery cut line 46 with the roll cutter etc. with respect to each continuous sheet | seat for the exterior sheets arrange | positioned separately. Moreover, the absorptive main body 10 is joined on each said continuous sheet | seat for exterior sheets arrange | positioned as an absorptive main body joining process.

  Thereafter, as the cutting step, the contraction force of the elastic elastic member is applied and the front body F is folded in the state where the continuous sheet for the exterior sheet on one side is folded to the other side by the folding line S by a sailor (not shown). After joining the joints 40 and 40 of the back body B and the joints 40 and 40 of the back body B by heat welding or hot melt adhesive or the like, as shown in FIG. Cut into shapes. In addition, in joining by the said junction parts 40 and 40, after making the contractive force of the said elastic expansion-contraction member act, you may make it fold in a diaper longitudinal direction center part, and conversely, in a diaper longitudinal direction center part. After the folding, the contraction force of the elastic elastic member may be applied.

  Here, after cutting into individual product shapes, as shown in FIG. 15B, the contraction force of the elastic elastic members 26, 28,... In the contracted state, the stretch of the elastic elastic member, the exterior sheet 20 for the back body, and the width of the exterior body sheet 20 for the back body and the width of the exterior sheet 30 for the front body are formed to be substantially equal. The cutting size of the front body exterior sheet 30 is determined.

  In the cutting step, before cutting into individual product shapes, it is preferable to pass a relaxation step in which the contraction force of the elastic elastic member disposed on the continuous sheet for the exterior sheet is applied to make it into a relaxed state. By passing through this relaxation process, it becomes possible to match the phase of the cutting position of the front body and the back body, and the cutting process becomes easy.

  In the cutting step, as described above, the cutting into individual product shapes is performed by applying the contraction force of the elastic elastic member and folding both sides of the front body F and the back body B in the folded state at the central part in the longitudinal direction of the diaper. If the part is joined after joining the joints 40, 40, the folding line S can be continuously folded, the cutting is further facilitated, and the cutting positions are aligned in the front and back bodies, so the appearance is also good. Therefore, it is preferable.

  In the cutting step, the joints located on both sides through the relaxation step will be joined after phase matching between the front body F and the back body B, but in order to apply the contraction force of the back body, For example, the tension of the line can be changed before and after entering the relaxation process, and the contraction force can be applied by relaxing the tension of the line. In addition, the contraction force can be applied also by holding only the absorbent main body fixing portion continuous on the exterior sheet in the transport line and gradually reducing the distance between the absorbent main bodies while transporting.

  On the other hand, instead of the cutting step, after cutting into individual product shapes, the contraction force of the elastic elastic member is applied, and the front body F and the back body B are folded in the central part in the longitudinal direction of the diaper. It is also possible to set it as the cutting process which joins by joining part 40,40.

  The paper diaper 1 in the product state is obtained through the above-described steps. At this time, after cutting into individual product shapes, the width dimension of the rear-body exterior sheet 20 and the width dimension of the front-body exterior sheet 30 are formed approximately equal to each other. Therefore, the appearance is good.

  In addition, although the concave leg periphery cut by the said leg periphery part cutting process is not necessarily required, since the appearance of the crotch part at the time of mounting | wearing is clear, it is preferable to provide a leg periphery cut.

  By the way, in the cutting process of the elastic elastic member, as shown in FIG. 15A, the cutting region of the elastic elastic member applied to the front body F exceeds the cutting planned line X of the front body F, It is preferable to enlarge each side part of the adjacent back body B to the joint part 40 with the front body exterior sheet 30. Thereby, since the cutting process of the elastic elastic member of the exterior sheet 30 for the front body and the cutting process of the elastic elastic member of the exterior sheet 20 for the back body are performed at the same time, the cutting process can be simplified and the joint portion 40 becomes a smooth fixing region, and smooth knobs are formed on both side edges of the back body, so that it becomes easy to draw both sides of the back body toward the front body side like a tape type.

  In the embodiment, the elastic elastic member of the front body exterior sheet 30 cuts the waist elastic elastic members 27 over the entire length, but also cuts the waist elastic elastic members 25 over the entire length. You may make it, or you may make it cut | disconnect only both sides.

  On the other hand, the elastic elastic member of the back body exterior sheet 20 cuts most regions and both side portions of the waist elastic elastic member 28 that overlap with the absorbent main body 10, but the waist elastic elastic member 26. Both sides of ... may be cut. Further, it is preferable to cut a certain range other than the region where the waist elastic elastic members 28 overlap the absorbent main body 10 because the absorber does not shrink. In addition, you may make it not cut to the area | region which overlaps with the absorptive main body 10 of the waist elastic elastic member 28 ....

  When both sides of the front body waist elastic elastic member 25 and the back waist elastic elastic member 26 are cut, the vicinity of the cutting part can be smoothed without being shrunk when cutting into individual product shapes. Good product appearance.

[Modification of the first manufacturing method of the disposable diaper 1]
In the first manufacturing method of the paper diaper 1, the step of separating and disposing the continuous sheet for the exterior sheet is performed after the step of cutting the elastic elastic member. As a modification thereof, as shown in FIG. You may make it perform the cutting process of an elastic expansion-contraction member to each of this continuous sheet | seat for exterior sheets after the space | interval arrangement | positioning process of the continuous sheet | seat for sheets.

  In the said 1st manufacturing method, since the elastic expansion-contraction member can be cut | disconnected before the continuous sheet for exterior sheets is separated by 2 lines, it is preferable at the point that it is not necessary to provide a some cutting device. In the modification of the manufacturing method, the elastic stretchable member can be cut individually for each of the continuous sheets for the exterior sheet that are spaced apart from each other, so that the continuous sheet for the exterior sheet is replaced with the exterior sheet on the other side. This is preferable in that a step of shifting by a half phase with respect to the continuous sheet for use is not necessary, and the manufacturing process can be simplified.

[Second manufacturing method of disposable diaper 1]
Similarly to the first manufacturing method, the second manufacturing method of the paper diaper 1 is the paper diaper 1 according to the first embodiment (a two-part sheet in which the outer sheet is composed of the rear body exterior sheet 20 and the front body exterior sheet 30). Is a method for producing a disposable diaper 1).

  As shown in FIG. 17, first, as a process for manufacturing a continuous sheet for exterior sheets, a continuous sheet W1 for exterior sheets is manufactured in the same manner as in the first manufacturing method.

  Next, as a step of cutting the elastic stretch member, the elastic stretch member applied to the continuous body W1 for the exterior sheet and the elastic stretch member cut region DF of the elastic stretch member applied to the front body F and the back body B A first cut defining region D4 having a shape coupled with the cutting region DB facing each other, and a second cutting definition having a shape obtained by inverting the first cut defining region in the line width direction. The region D3 is set with a predetermined interval in the line direction, and the elastic elastic members in the cutting definition regions D3, D4,.

  After that, as a separation step, the elastic stretch member to be applied to the back body B and the cutting region DF of the elastic body to be applied to the front body F at the intermediate portion in the width direction of the continuous sheet W1 for the exterior sheet. After cutting so as to divide the cutting area DB, the cutting area DB is spaced apart in the line width direction.

  When cutting the continuous sheet W1 for the exterior sheet, a die cutter roll and an anvil roll (not shown) provided with a cutting blade having a wavy pattern by moving the cutter device 45 to the left and right with respect to the line direction. ), The diaper longitudinal dimension of the back body side is relatively large and can be cut substantially in the line direction. Thereby, the leg opening process in the first manufacturing method can be omitted, and the manufacturing process can be simplified.

  The cut pattern is preferably the wavy line shape, but may be a straight line shape that is easy to manufacture. In addition, as in the first manufacturing method, the appearance of the crotch portion at the time of wearing is provided by providing a leg-peripheral section cutting step that cuts a portion corresponding to the leg-peripheral section of each continuous sheet for exterior sheets that is spaced apart into a concave shape. Can be made clearer.

  In the second manufacturing method, before the mechanical engagement type fastener means sticking step, in both sides of the front body exterior sheet 30, it is more inward than the joint 40 between the front body F and the back body B of the exterior sheet. A perforation forming step of forming a perforation 47 from the waist opening to the leg opening at a position which is a side position and crosses the mechanical engagement type fastener means 43 in the vertical direction is performed. The perforation forming step may be performed in the first manufacturing method and the third manufacturing method described later.

  And after the fastener means sticking process which sticks the mechanical engagement type fastener means 43 and 43 to the site | part corresponding to the both sides of the back body B, as the cutting process, the said exterior body 10 in which the said absorptive main body 10 was arrange | positioned separately Joined onto a continuous sheet for cutting and cutting into individual product shapes.

  About another structure, it is the same as that of the said 1st manufacturing method.

As described above, in the second manufacturing method, when cutting the continuous sheet W1 for exterior sheets, the cutter device 45 is moved to the left and right with respect to the line direction, and the diaper longitudinal dimension of the back body side becomes relatively large. By cutting in a wavy line shape, the leg opening step in the first manufacturing method can be omitted, and the manufacturing process can be simplified.
[Third manufacturing method of disposable diaper 1]
The 3rd manufacturing method of the paper diaper 1 is a manufacturing method of the paper diaper 1 (The paper diaper 1 in which the exterior sheet is integrally formed from the front body F to the back body B) according to the second embodiment.

  As shown in FIG. 18, as a process for producing a continuous sheet for an exterior sheet, the continuous upper layer nonwoven fabric 3A and the continuous lower layer nonwoven fabric 3B are fed out to the line, and the respective areas of the front body F and the back body B are A large number of elastic elastic members 25 to 28 are interposed between the upper layer nonwoven fabric and the lower layer nonwoven fabric along the waist portion and the waistline portion to produce a continuous sheet W2 for exterior sheets.

  Next, as a step of cutting the elastic stretchable member, a first shape having a shape in which a cutting region DF of the elastic stretchable member applied to the front body F and a cutting region DB of the elastic stretchable member applied to the back body B are opposed to each other. A first cut defining area D6 and a second cut defining area D5 having a shape obtained by inverting the first cut defining area D5 in the line width direction are set at a predetermined interval in the line direction; These elastic stretch members in the cutting definition regions D6, D5,.

  Thereafter, as a fastener means attaching step, mechanical engagement type fastener means 43, 43 provided with hook elements that can be engaged with the exterior sheet on the inner surface side of the diaper are attached to the outer surface of the front body F.

And after passing through the leg circumference cutting step for cutting out the portion corresponding to the leg circumference portion and the absorbent main body joining step for joining the absorbent main body 10, the contraction force of the elastic elastic member acts as the cutting step In the state where one side in the line width direction is folded back to the other side by the folding line S by a sailor, the joints 40, 40 of the front body F and the joints 40, 40 of the back body B are heat welded or hot melted. After joining with an adhesive or the like, it is cut into individual product shapes.
About another structure, it is the same as that of the said 1st manufacturing method.

[Other examples]
(1) In the above-described embodiment, the elastic body members disposed on the rear body exterior sheet 20 and the front body exterior sheet 30 or the exterior sheet 3 are waist elastic stretch members 25, 26, and the front body F. In addition, the waist elastic elastic members 27, 28, etc., which are arranged along the horizontal direction with an interval in the vertical direction on the back body B, are two types, but elastic elastic members are arranged around the legs. It is also possible to do.

  DESCRIPTION OF SYMBOLS 1 ... Disposable paper diaper, 3 ... Exterior sheet, 10 ... Absorbent main body, 11 ... Liquid-permeable surface sheet, 12 ... Leak-proof sheet, 13 ... Absorber, 14 ... Cover sheet, 15 ... Gathered nonwoven fabric, 16-18 ... Threaded elastic elastic member, 20 ... exterior sheet for back body, 21A / 31A ... upper layer nonwoven fabric, 21B / 31B ... lower layer nonwoven fabric, 21/23 ... waist part, 22/24 ... waist part, 25/26 ... waist part elastic extension / contraction 27, 28 ... waist elastic elastic members, 30 ... front body exterior sheet, 43 ... mechanical engagement fastener means, 47 ... perforation, W1 ... exterior sheet continuous sheet

Claims (7)

An absorbent main body in which an absorbent body is interposed between a liquid-permeable top sheet and a back sheet, and an exterior sheet integrally joined to the absorbent body, and the exterior sheet includes an upper layer nonwoven fabric and a lower layer nonwoven fabric. A large number of elastic elastic members are disposed along the waist part and the waist part between the outer body sheet and the waist part between the upper nonwoven fabric and the lower nonwoven fabric. And a large number of elastic elastic members are arranged along the waist part, and is composed of a two-part sheet composed of a front body exterior sheet joined to the front body side of the absorbent main body,
All the elastic elastic members arranged in the waist part of the front body are cut finely over the entire length, and the exterior body sheet for the back body is larger in width than the exterior body sheet for the front body in a state of extending in the width direction. In the product state in which the contraction force of the elastic elastic member is set, the width dimension of the outer sheet for the front body and the width dimension of the exterior sheet for the rear body are formed substantially equal,
In the waist part of the exterior sheet for the back body, most of the elastic elastic member disposed in the region overlapping the absorbent main body is finely cut,
A plurality of mechanically engaging fastener means having a hook element engageable with the exterior sheet on one surface side are detachably provided on the outer surface of the exterior sheet. In the exterior sheet for the front body, a diaper is provided. The machine in which the elastic elastic member is cut from the outer surface side of the sheet, and at the same time as the cutting process, a seal portion is formed in the cutting region of the elastic elastic member, and a plurality of holes are formed in the outer surface of the exterior sheet The engagement surface treatment of the engagement type fastener means has been performed,
The front body exterior sheet and the back body exterior sheet are joined at both sides to produce a pants-type disposable paper diaper having a waist opening and a pair of left and right leg openings,
Two continuous nonwoven fabrics having a width dimension that combines the diaper longitudinal dimension of the rear body exterior sheet and the diaper longitudinal dimension of the front body exterior sheet are fed out into a line, and the line between these continuous nonwoven fabrics A step of producing a continuous sheet for an exterior sheet by interposing a number of elastic elastic members corresponding to the waist elastic elastic member and the waist elastic elastic member along the direction;
After separating the continuous sheet for the exterior sheet along the line direction at the center in the width direction, a separation arrangement step of separating the line in the line width direction;
Against one side of the outer sheet continuous sheet described above spaced, and the front body cutting region of the resilient and elastic members applied to said front body, a back body cutting region after resilient and elastic members for applying to said back body The back body is set alternately at predetermined intervals in the line direction, and at the position facing the front body cutting region on one side of the exterior sheet continuous sheet with respect to the other side of the exterior sheet continuous sheet. Cutting the front body of the elastic elastic member to be applied to the front body at a position facing the rear body cutting area on one side of the continuous sheet for the exterior sheet A step of cutting the elastic elastic member that sets the region and finely cuts the elastic elastic member of each cutting region from the outer surface side of the diaper;
A mechanically engaged fastener means adhering step for removably attaching a mechanically engaged fastener means having a hook element engageable with the exterior sheet on one surface side to the outer surface of the exterior sheet;
In the state where the front body cutting region and the back body cutting region are facing each other, the absorbent main body joining step for joining the absorbent main body onto the spaced-apart outer sheet continuous sheet;
Cutting with which the contraction force of the elastic elastic member is applied and the front body and the back body are joined to each other in the folded state at the center part in the longitudinal direction of the diaper and then cut into individual product shapes. Process,
A method for producing disposable paper diapers, comprising: An absorbent main body in which an absorbent body is interposed between a liquid-permeable top sheet and a back sheet, and an exterior sheet integrally joined to the absorbent body, and the exterior sheet includes an upper layer nonwoven fabric and a lower layer nonwoven fabric. A large number of elastic elastic members are disposed along the waist part and the waist part between the outer body sheet and the waist part between the upper nonwoven fabric and the lower nonwoven fabric. And a large number of elastic elastic members are arranged along the waist part, and is composed of a two-part sheet composed of a front body exterior sheet joined to the front body side of the absorbent main body,
All the elastic elastic members arranged in the waist part of the front body are cut finely over the entire length, and the exterior body sheet for the back body is larger in width than the exterior body sheet for the front body in a state of extending in the width direction. In the product state in which the contraction force of the elastic elastic member is set, the width dimension of the outer sheet for the front body and the width dimension of the exterior sheet for the rear body are formed substantially equal,
In the waist part of the exterior sheet for the back body, most of the elastic elastic member disposed in the region overlapping the absorbent main body is finely cut,
A plurality of mechanically engaging fastener means having a hook element engageable with the exterior sheet on one surface side are detachably provided on the outer surface of the exterior sheet. In the exterior sheet for the front body, a diaper is provided. The machine in which the elastic elastic member is cut from the outer surface side of the sheet, and at the same time as the cutting process, a seal portion is formed in the cutting region of the elastic elastic member, and a plurality of holes are formed in the outer surface of the exterior sheet The engagement surface treatment of the engagement type fastener means has been performed,
The front body exterior sheet and the back body exterior sheet are joined at both sides to produce a pants-type disposable paper diaper having a waist opening and a pair of left and right leg openings,
Two continuous nonwoven fabrics having a width dimension that combines the diaper longitudinal dimension of the rear body exterior sheet and the diaper longitudinal dimension of the front body exterior sheet are fed out into a line, and the line between these continuous nonwoven fabrics A step of producing a continuous sheet for an exterior sheet by interposing a number of elastic elastic members corresponding to the waist elastic elastic member and the waist elastic elastic member along the direction;
With respect to the continuous sheet for the exterior sheet, a first cut defining area set by doubling the cutting area of the elastic elastic member applied to the front body in the line width direction, and the back body The cutting area of the elastic elastic member to be applied is set alternately with a second cutting definition area set by doubling the line width direction in the line direction at a predetermined interval, and these cutting images are formed from the outer surface side of the diaper. A step of cutting the elastic elastic member to finely cut the elastic elastic member of the formation region;
After cutting the continuous sheet for the exterior sheet along the line direction at the center in the width direction, the continuous sheet for the exterior sheet is separated from the continuous sheet for the other side while being spaced apart in the line width direction. A step of separating the half of the elastic stretch member to be applied to the front body and the cutting region of the elastic stretch member to be applied to the back of the body, and a separation arrangement step of facing the front body.
A mechanically engaged fastener means adhering step for removably attaching a mechanically engaged fastener means having a hook element engageable with the exterior sheet on one surface side to the outer surface of the exterior sheet;
An absorptive main body joining step for joining the absorptive main body onto the spaced apart continuous sheet for exterior sheets;
Cutting with which the contraction force of the elastic elastic member is applied and the front body and the back body are joined to each other in the folded state at the center part in the longitudinal direction of the diaper and then cut into individual product shapes. Process,
A method for producing disposable paper diapers, comprising: An absorbent main body in which an absorbent body is interposed between a liquid-permeable top sheet and a back sheet, and an exterior sheet integrally joined to the absorbent body, and the exterior sheet includes an upper layer nonwoven fabric and a lower layer nonwoven fabric. A large number of elastic elastic members are disposed along the waist part and the waist part between the outer body sheet and the waist part between the upper nonwoven fabric and the lower nonwoven fabric. And a large number of elastic elastic members are arranged along the waist part, and is composed of a two-part sheet composed of a front body exterior sheet joined to the front body side of the absorbent main body,
All the elastic elastic members arranged in the waist part of the front body are cut finely over the entire length, and the exterior body sheet for the back body is larger in width than the exterior body sheet for the front body in a state of extending in the width direction. In the product state in which the contraction force of the elastic elastic member is set, the width dimension of the outer sheet for the front body and the width dimension of the exterior sheet for the rear body are formed substantially equal,
In the waist part of the exterior sheet for the back body, most of the elastic elastic member disposed in the region overlapping the absorbent main body is finely cut,
A plurality of mechanically engaging fastener means having a hook element engageable with the exterior sheet on one surface side are detachably provided on the outer surface of the exterior sheet. In the exterior sheet for the front body, a diaper is provided. The machine in which the elastic elastic member is cut from the outer surface side of the sheet, and at the same time as the cutting process, a seal portion is formed in the cutting region of the elastic elastic member, and a plurality of holes are formed in the outer surface of the exterior sheet The engagement surface treatment of the engagement type fastener means has been performed,
The front body exterior sheet and the back body exterior sheet are joined at both sides to produce a pants-type disposable paper diaper having a waist opening and a pair of left and right leg openings,
Two continuous nonwoven fabrics having a width dimension that combines the diaper longitudinal dimension of the rear body exterior sheet and the diaper longitudinal dimension of the front body exterior sheet are fed out into a line, and the line between these continuous nonwoven fabrics A step of producing a continuous sheet for an exterior sheet by interposing a number of elastic elastic members corresponding to the waist elastic elastic member and the waist elastic elastic member along the direction;
A shape in which the cutting region of the elastic elastic member applied to the front body and the cutting region of the elastic elastic member applied to the back body are coupled to the continuous sheet for the exterior sheet in a state of facing each other. A first cut defining area and a second cut defining area having a shape obtained by inverting the first cut defining area in the line width direction are set at a predetermined interval in the line direction, and the diaper A cutting step of the elastic elastic member that finely cuts the elastic elastic member of the cutting definition region from the outer surface side ;
After cutting so as to divide the cutting region of the elastic elastic member applied to the front body and the cutting region of the elastic elastic member applied to the rear body at the intermediate portion in the width direction of the continuous sheet for the exterior sheet A separation arrangement step of arranging separation in the line width direction;
A mechanically engaged fastener means adhering step for removably attaching a mechanically engaged fastener means having a hook element engageable with the exterior sheet on one surface side to the outer surface of the exterior sheet;
An absorptive main body joining step for joining the absorptive main body onto the spaced apart continuous sheet for exterior sheets;
Cutting with which the contraction force of the elastic elastic member is applied and the front body and the back body are joined to each other in the folded state at the center part in the longitudinal direction of the diaper and then cut into individual product shapes. Process,
A method for producing disposable paper diapers, comprising: It consists of an absorbent main body in which an absorbent body is interposed between a liquid-permeable top sheet and a back sheet, and an exterior sheet joined integrally with the absorbent main body, and is integrally formed from the front body to the back body. Formed in each region of the front body and the back body, and is composed of a single sheet in which a number of elastic elastic members are disposed along the waist portion and the waist portion between the upper layer nonwoven fabric and the lower layer nonwoven fabric,
All the elastic elastic members arranged in the waist part of the front body are cut finely over the entire length, and the exterior sheet constituting the back body is more than the exterior sheet constituting the front body in a state of extending in the width direction. The width dimension of the exterior sheet constituting the front body and the width dimension of the exterior body constituting the back body are substantially equal in a product state in which the width dimension is set to be large and the contraction force of the elastic elastic member is applied. Formed into
In the waist part of the exterior sheet constituting the back body, most of the elastic elastic member disposed in the region overlapping the absorbent main body is finely cut,
In the exterior sheet constituting the front body, a plurality of mechanically engaged fastener means having hook elements that can be engaged with the exterior sheet on one surface side are detachably provided with respect to the outer surface of the exterior sheet. The elastic stretchable member was cut from the outer surface side of the diaper, and simultaneously with this cutting, a seal portion was formed in the cutting region of the elastic stretchable member, and a number of openings were formed on the outer surface of the exterior sheet. An engagement surface treatment of the mechanical engagement fastener means is performed,
It is a manufacturing method of a disposable paper diaper that is a pants-type in which a waist opening and a pair of left and right leg openings are formed by joining the front body and the back body of the exterior sheet on both sides,
A continuous upper layer non-woven fabric and a continuous lower layer non-woven fabric are fed out into a line, and a large number of elastic stretches along the waist and waist area between the upper layer non-woven fabric and the lower layer non-woven fabric in the respective regions of the front body and the back body. A step of producing a continuous sheet for an exterior sheet by interposing a member;
A first cut defining region having a shape in which a cutting region of the elastic elastic member applied to the front body and a cutting region of the elastic elastic member applied to the rear body are opposed to each other, and the first cutting A second cut defining area having a shape obtained by inverting the defined area in the line width direction is set at a predetermined interval in the line direction, and the elastic elastic members of these cut defined areas are finely defined from the outer surface side of the diaper. Cutting the elastic elastic member to be cut;
A mechanically engaged fastener means adhering step for removably attaching a mechanically engaged fastener means having a hook element engageable with the exterior sheet on one surface side to the outer surface of the exterior sheet;
A leg circumference cutting step for cutting so as to punch out a portion corresponding to the leg circumference,
An absorbent main body joining step for joining the absorbent main body onto a continuous sheet for exterior sheets;
Cutting with which the contraction force of the elastic elastic member is applied and the front body and the back body are joined to each other in the folded state at the center part in the longitudinal direction of the diaper and then cut into individual product shapes. Process,
A method for producing disposable paper diapers, comprising: Before the mechanical engagement type fastener means sticking step, in the both sides of the front body exterior sheet or the exterior sheet constituting the front body, the inner side of the joint between the front body and the back body of the exterior sheet a location according to any one of claims 1 to 4 having a perforation forming step of forming the perforations extending from the waist opening to said leg openings at positions transverse to the machine engaging fastener means in the longitudinal direction Manufacturing method of disposable paper diapers. Instead of the cutting step, after cutting into individual product shapes, the contraction force of the elastic elastic member is applied, and both sides of the front body and the back body are folded in the center of the diaper longitudinal direction. The manufacturing method of the disposable paper diaper in any one of Claims 1-5 made into the cutting process joined at the said junction part. In the cutting step of the elastic elastic member, the cutting region of the elastic elastic member to be applied to the front body is beyond the cutting line of the front body , and is on each side part of the adjacent back body, for the front body The manufacturing method of the disposable paper diaper in any one of Claims 1-6 expanded to the junction part with the exterior sheet which comprises an exterior sheet or the front body.

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