JP4769891B2 - Method for producing disposable wearing article - Google Patents

Description

  The present invention relates to a method for continuously producing disposable wearing articles such as disposable pants.

  Disposable pants-type body fluid-absorbing wearing articles include infant pants-type diapers, training pants, incontinence pants, and the like, and a method for manufacturing such disposable wearing articles is disclosed in Patent Document 1, for example. There is something like this.

JP 2002-113042 A

  What is demanded as a manufacturing method of disposable wearing articles is to reduce trim (loss portion) generated by cutting a web (sheet-like base material such as nonwoven fabric) in a manufacturing process as much as possible. Thereby, the manufacturing cost of the wearing article can be reduced.

  Moreover, when the manufactured disposable wearing article is worn, the tension (shrinkage force) of the elastic members respectively bonded to the sheet material covering the front portion and the back portion is not different. As a result, wrinkles are less likely to occur at the front portion and the back portion, so that the appearance is improved and the commercial value of the worn article can be improved.

  The present invention has been made in order to meet the above-described demands, and an object of the present invention is to provide a method for manufacturing a disposable worn article that can reduce the manufacturing cost and improve the commercial value.

  In the manufacturing method of the present invention, the elastic member is sandwiched between the two webs in the stretched state between the two webs so that the elastic belt material is manufactured, and the convex portions and the concave portions appear alternately. Prior to dividing the elastic belt member into two first elastic belt members and a second elastic belt member in the width direction, a portion of the first elastic belt member and a portion constituting a convex portion of the second elastic belt member. Reducing the contraction force of the elastic member, dividing the elastic belt material into the first elastic belt material and the second belt material, the first elastic belt material and the second elastic belt material, Separating the first elastic belt material and the second elastic belt material in the width direction, and shifting the phase in the length direction so that the respective convex portions and the concave portions have the same phase, Shrinkage of 1 elastic belt material and 2nd elastic belt material Across a small the site, there is provided a method for manufacturing disposable wearing articles, which comprises the step of attaching the absorbent body.

  According to the manufacturing method of the invention, the elastic belt material is divided into two in the width direction, the divided first elastic belt material and second elastic belt material are separated in the width direction, and the phase is shifted in the length direction. Thus, since the absorbent body is mounted across the first elastic belt material and the second elastic belt material, trim (loss portion) does not occur even if the web is cut in the manufacturing process. However, in order to design the first elastic belt material and the second elastic belt material, the web may be slightly cut. In this case, a trim (loss portion) occurs slightly.

  In addition, by splitting an elastic belt material manufactured by sandwiching an elastic member with the same tension between two webs into two parts, a sheet that covers the front part and the back part when the manufactured disposable wearing article is worn The tension (shrinkage force) of the elastic members respectively bonded to the materials is not different.

  Further, in the step of dividing the elastic belt material into two in the width direction, the first elastic belt material and the second elastic belt material divided into two in the next step are cut so that convex portions and concave portions appear alternately. By shifting the phase in the length direction and separating the width in the width direction so that the convex portion and the concave portion have the same phase, thereby the absorber is biconvex of the first elastic belt material and the second elastic belt material. It can be installed across parts.

  Moreover, a part of absorber can be covered with the both convex part of a 1st elastic belt material and a 2nd elastic belt material.

  Furthermore, by attaching the absorbent body over a portion where the shrinkage force in the vicinity of the convex portions of the first elastic belt material and the second elastic belt material is reduced, the shrinkage force does not act on the absorbent body.

Oite the above manufacturing method, the elastic member is an elastic member for body fitting, to the elastic belt member can include a step of adhering an elastic member for waist in a stretched state.

Oite the above manufacturing method, the elastic member is an elastic member and the leg hole elastic member for body fitting, to the elastic belt member can include a step of adhering an elastic member for waist in a stretched state.

Oite the above manufacturing method, the first elastic belt member and a second elastic belt material, superimposed by folding the absorbent body, comprising the steps of side seal both side portions of the first elastic belt member and the second elastic belt material be able to.

Oite above manufacturing method, the step of reducing the contractile force of the elastic member is preferably carried out in a state in which along a roll while pulling the elastic belt member in a vacuum.

The Oite the manufacturing method, the step of dividing the elastic belt material into a first elastic belt member and the second elastic belt material is convex in the width dimension of the convex portion of the first elastic belt member and the second elastic belt material The elastic belt material is preferably divided so as to be smaller than the width dimension of the portion.

Oite the above manufacturing method, that the flaps rise on both sides of the absorbent body is provided preferably.

Oite the above manufacturing method, the rising flaps, front side is formed inwardly, preferably the back side is twisted so formed outwardly.

Oite the above manufacturing method, with both sides in the recess portion of the absorbent body is formed, preferably the leg elastic members along the recess is bonded in a stretched state.

  In the present invention, the elastic belt member is divided into two in the width direction, and the first elastic belt member is separated from the divided first elastic belt member and the second elastic belt member in the width direction so that the phase is shifted. Since the trim (loss portion) does not occur even when the web is cut in the manufacturing process, the manufacturing cost of the worn article can be reduced by attaching the material straddling the material and the second elastic belt material.

  In addition, by splitting an elastic belt material manufactured by sandwiching an elastic member with the same tension between two webs into two parts, a sheet that covers the front part and the back part when the manufactured disposable wearing article is worn Since the tension (shrinkage force) of the elastic members bonded to the materials does not differ, wrinkles are less likely to occur at the front part and the back part, which improves the appearance and improves the commercial value of the worn article. it can.

  Further, in the step of dividing the elastic belt material into two in the width direction, the first elastic belt material and the second elastic belt material divided into two in the next step are cut so that convex portions and concave portions appear alternately. By shifting the phase in the length direction and separating the width in the width direction so that the convex portion and the concave portion have the same phase, thereby the absorber is biconvex of the first elastic belt material and the second elastic belt material. It can be installed across parts. Thereby, since an absorber can be respectively attached to the convex part of a large space, attachment can be performed reliably.

  Moreover, since a part of an absorber can be covered with the both convex parts of a 1st elastic belt material and a 2nd elastic belt material, since a wearing article approximates a pants shape, it looks good and the article of a wearing article Value can be improved.

  Furthermore, by attaching the absorbent body over a portion where the shrinkage force in the vicinity of the convex portions of the first elastic belt material and the second elastic belt material is reduced, the shrinkage force does not act on the absorbent body. Thereby, since an absorber does not contract by contractive force, the adhesiveness with respect to a body can be improved.

  The body fit elastic member can effectively prevent the body from slipping off when the worn article is worn.

  The body-fit elastic member can effectively prevent the body from slipping off when the worn article is worn, and the leg-around elastic member can improve the adhesion to the leg of the body. .

  The said wearing article can be made into a pants type.

  By the rising flap, it is possible to effectively prevent side leakage from both sides of the absorber.

  Since the back side is widened by twisting the rising flap, side leakage from the back side can be more effectively prevented.

  The recess can fit both sides of the absorber closer to the leg of the body, and the leg elastic member can improve the adhesion to the crotch of the body on both sides of the absorber.

It is a system diagram of the manufacturing process of disposable pants. It is a top view of the manufacture situation of process 1-process 4. It is a top view of the manufacture situation of process 5-process 9. It is a top view of the manufacture situation of process 10-process 15. It is a disassembled perspective view of disposable pants. (A)-(d) is principal part sectional drawing of the manufacture condition of the process 1-the process 4. FIG. (A)-(d) is principal part sectional drawing of the manufacture condition of the process 5-the process 9. FIG. (A)-(c) is principal part sectional drawing of the manufacture condition of the process 10-the process 15. FIG. It is the disposable pants of 1st Embodiment, (a) is a top view of an unfolded state, (b) is side sectional drawing. It is the disposable pants of 2nd Embodiment, (a) is a top view of the 1st elastic belt material in a process 3, and a 2nd elastic belt material, (b) is a top view of an unfolded state. It is the disposable pants of 3rd Embodiment, (a) is a top view of an absorber, (b) is a top view of an unfolded state. It is disposable pants of 4th Embodiment, (a) is a top view of the 1st elastic belt material in a process 3, and a 2nd elastic belt material, (b) is a top view of an unfolded state. (A)-(d) is a schematic plan view of the disposable pants of 1st-4th embodiment. (A) is a perspective view of a disposable pants, (b) is a top view which shows the point of S cut of an elastic belt material.

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

  13 (a) to 13 (d) are plan views showing a state in which pants-type disposable wearing articles (hereinafter referred to as disposable pants) 1A to 1D are developed.

  As shown in FIG. 14 (a), each of the disposable pants 1A to 1D has the absorbent body 2 attached over the front portion (first elastic belt material) P and the back portion (second elastic belt material) Q. The front portion P and the back portion Q are folded and overlapped with each other, and the side portions 1a of the front portion P and the back portion Q are side-sealed to form a pants type.

  In the disposable pants 1 </ b> A to 1 </ b> D, the crotch portion R is formed by the absorbent body 2, and the leg openings S are formed on both sides of the absorbent body 2.

  The outline of the manufacturing procedure of the disposable pants 1A to 1C of FIGS. 13A to 13C will be described with reference to FIG. 14B. However, in order to facilitate the description, the manufacturing steps 1 to 15 described later will be described. It does not necessarily agree with the explanation.

  First, the elastic belt member 12 is cut into two in the width direction along the cut line b so that the convex portions 12a and the concave portions 12b appear alternately, and the two divided first elastic belt members 12A and second elastic belt members are cut. 12B is cut along the cut line a to produce the front part P and the back part Q, and the phase is shifted in the length direction so that the convex part 12a and the concave part 12b have the same phase and separated in the width direction. And the absorber 2 is attached ranging over both the convex parts 12a.

  The disposable pants 1D shown in FIG. 13 (d) are separated in the width direction without shifting the phase, and the absorbent body 2 is attached across the convex portion 12a and the concave portion 12b.

  The disposable pants 1A according to the first embodiment shown in FIG. 13A has a waist elastic member 3 and a body fit elastic member 4 bonded to the front portion P and the back portion Q, and is in the vicinity of the convex portion 12a. The absorbent body 2 is attached across the region 12c where the contraction force of the body fitting elastic member 4 is reduced.

  In the disposable pants 1B of the second embodiment of FIG. 13B, the waist elastic member 3, the body fit elastic member 4, and the leg elastic member 5 are bonded to the front part P and the back part Q, The absorbent body 2 is attached across the region 12c where the contraction force of the body fitting elastic member 4 and the leg rotating elastic member 5 in the vicinity of the convex portion 12a is reduced.

  The disposable pants 1C of the third embodiment in FIG. 13C is obtained by bonding the leg elastic members 6 to both sides of the absorbent body 2 of the disposable pants 1B in FIG. 13B.

  In the disposable pants 1D of the fourth embodiment of FIG. 13D, the elastic member 3 for the waist and the elastic member 4 for the body fit are bonded to the front portion P and the back portion Q, and the convex portion 12a and the concave portion 12b are formed. The absorber 2 is attached across the region 12c where the contraction force of the nearby body fitting elastic member 4 is reduced.

  Next, using the disposable pants 1A of the first embodiment in FIG. 13A as a representative example, the manufacturing method will be described with reference to FIGS.

  (1) Steps 1 to 4 are steps for manufacturing the first elastic belt material 12A and the second elastic belt material 12B from the elastic belt material 12 in a lateral flow state.

  [Step 1] In FIG. 1, FIG. 2, and FIG. 6, between the nonwoven fabric outer web 10 and the nonwoven fabric inner web 11 continuously fed in the length direction A, the front portion P side and the back portion. An elastic belt member 12 is manufactured by sandwiching the elastic member 4 for body fitting on the Q side in the length direction A in an extended state (see FIGS. 6A to 6C).

  For example, a hot melt adhesive is applied to at least one of the webs 10 and 11, and the webs 10 and 11 are bonded to each other with the body fit elastic member 4 sandwiched therebetween.

  Polyurethane, natural rubber, thermoplastic resin, etc. can be used as the material of the elastic member 4 for body fit, and the shape can be thread, ribbon, etc. good. When a thermoplastic resin is used as a material, a hot melt adhesive may be unnecessary if the web 10 or 11 has a function of adhering to the web itself. In addition, each elastic member 3, 5-7 mentioned later is also the same material and shape.

  [Step 2] The elastic belt material 12 includes a first elastic belt material 12A and a second elastic belt material 12B so that the convex portions (leg flap portions) 12a and the concave portions 12b appear alternately in Step 3 described below. In the second step, the contraction force of the body fit elastic member 4 in the vicinity of the convex portion 12a of the first elastic belt member 12A and the second elastic belt member 12B is cut in two in the width direction W. The part 12c which made the shrinkage | contraction force small is given.

  As a process for reducing the shrinkage force, for example, a method of melting the body fitting elastic member 4 using an embossing roll (heat embossing) (see Japanese Patent Application Laid-Open No. 2002-113042) or a body cutter elasticity using a gather cutter 14 is used. A method of cutting the member 4 can be employed. This melting or cutting is preferably performed in a state where the elastic belt member 12 is stretched along the roll while being vacuumed.

  In addition, as long as the process of making shrinkage force small is a process until the process 10 which attaches the absorber 2 mentioned later, any may be sufficient.

  [Step 3] The elastic belt material 12 is cut into two in the width direction W by the S cutter 15 (so-called S cut) so that the convex portions 12a and the concave portions 12b appear alternately on the elastic belt material 12 (so-called S cut). The belt material 12A and the second elastic belt material 12B are manufactured.

  [Step 4] The first elastic belt material 12A and the second elastic belt material 12B divided into two parts are separated at a constant interval W1 in the width direction W, and the convex part 12a and the concave part 12b are in phase. The half phase is shifted in the length direction A (see FIG. 6D). Note that the step of separating the first elastic belt material 12A and the second elastic belt material 12B may be performed after the so-called S-cut and before the absorber 2 is bonded.

  As a method of shifting the phase, for example, the distance that the first elastic belt member 12A is continuously fed in the length direction A is made longer than the distance that the second elastic belt member 12B is continuously fed in the length direction A. Can be done. Specifically, by sending the first elastic belt member 12A along the dummy roll 16, the distance to be sent can be increased.

  (2) Steps 5 to 9 are steps for manufacturing the absorbent body 2 in a longitudinal flow state.

  [Step 5] In FIG. 1, FIG. 3 and FIG. 7, a non-woven wide backsheet 20a and a liquid-impermeable narrow backsheet 20b continuously fed in the length direction A are combined with a hot melt adhesive or the like. In addition, the flap elastic member 7 is bonded along the lengthwise direction A in an inwardly bent portion 20c where the both ends of the wide backsheet 20a in the width direction are bent inwardly by the sailor 28 [ See FIG. 7A]. As the liquid-impermeable sheet, polyethylene and a nonwoven fabric having water repellency and air permeability are preferable. The back sheet 20a may be a liquid-impermeable sheet, the back sheet 20b may be a liquid-permeable sheet, and the back sheets 20a and 20b may be liquid-impermeable sheets. That is, it is only necessary that the backsheet can prevent liquid leakage from the core 2a of the absorbent body 2.

  [Step 6] The core 2a of the absorbent body 2 is formed in a cross-flow state by a method of laminating fluffs obtained by pulverizing roll pulp 17 with a pulverizer 18 onto a pattern drum 19 (see Japanese Patent Laid-Open No. 63-139547). To do. The fluff may be mixed with a superabsorbent polymer.

  When the core 2a is manufactured in a lateral flow state, the orientation of the core 2a is reversed by 90 degrees by a re-pitch / turn drum to obtain a longitudinal flow state (see International Publication No. WO01 / 44086).

  [Step 7] The back sheets 20a and 20b manufactured in Step 5 are turned upside down and turned upside down, and the core 2a is placed on the back sheet 20b on the upper side in a vertical flow state [FIG. b)], by adhering the liquid-permeable top sheet 20d to the back sheet 20b together with the core 2a with a hot-melt adhesive or the like [see FIG. 7C], the absorbent body 2 is long in the longitudinal direction A. Manufacturing. As the liquid permeable sheet, a liquid permeable nonwoven fabric or a mesh sheet is preferable.

  [Step 8] The rising flaps 8 are formed by folding the inner bent portions 20c at both ends of the back sheet 20a on the lower side inward [see FIG. 7 (d)]. Further, instead of forming the rising flap 8 by the back sheet 20a or 20b, the rising flap may be formed by the top sheet 20d. In that case, it is preferable that a waterproof treatment is applied to a portion of the top sheet 20d which becomes a rising flap.

  [Step 9] The absorbent body 2 that is long in the length direction A is cut by the built-in cutter 21 along the rising flap 8 with a certain length to produce the rectangular absorbent body 2.

  (3) Steps 10 to 15 are steps for assembling the disposable pants 1A in a lateral flow state.

  [Step 10] The absorbent body 2 manufactured in Step 9 is reversed by 90 degrees with the internal turn drum 23 to be in a lateral flow state (see the left end of FIG. 3).

  On the other hand, the first elastic belt material 12A and the second elastic belt material 12B manufactured in the step 4 are turned upside down and turned upside down, and the absorbent body 2 is made up of the first elastic belt material 12A and the second elastic belt. Bonding is performed across the portion 12c where the contraction force in the vicinity of the convex portion 12a of the material 12B is reduced [see FIG. 8 (a)].

  [Step 11] The elastic member 3 for waist is stretched in the length direction A along the both ends 12d in the width direction W on the outer web 10 side of the first elastic belt material 12A and the second elastic belt material 12B. The both end portions 12d are folded inward, and the elastic member 3 for the waist is bonded into the both end portions 12d (see FIG. 8B). Both end portions 12d are also bonded to the front and rear end portions of the absorbent body 2 so as to cover the front and rear end portions of the absorbent body 2.

  [Step 12] The absorbent body 2 is folded at the middle position in the width direction W by the folding device 24 so that the first elastic belt member 12A is on the upper side and the second elastic belt member 12B is on the lower side. Superimpose them (see FIG. 8C).

  [Step 13] An intermediate position between adjacent absorbent bodies 2 of the folded first elastic belt material 12A and second elastic belt material 12B (corresponding to both side portions 1a of the disposable pants 1A at the concave portion 12b). Side sealing is performed by fusing with multiple stages of heat seals 25a to 25c. In addition, the heat seals 25a to 25c are not necessarily required to have a plurality of stages. Further, side sealing may be performed by sonic instead of the heat seals 25a to 25c.

  [Step 14] When the intermediate portion of the side-sealed portion 1b of the first elastic belt material 12A and the second elastic belt material 12B is cut by the product cutter 26, the disposable pants 1A in which both side portions 1a are side-sealed are completed.

  [Step 15] The disposable pants 1A as the product is turned 90 degrees by the product reversing machine 27 and then sent from the product inspection step to the packaging step.

  Among the above steps 1 to 15, in step 3, the elastic belt member 12 is divided into two in the width direction, and the divided first elastic belt member 12A and second elastic belt member 12B are separated in the width direction W. Since the absorbent body 2 is bonded across the first elastic belt material 12A and the second elastic belt material 12B, trimming (loss portion) does not occur even if the webs 10 and 11 are cut in the manufacturing process. The manufacturing cost of the pants 1A can be reduced.

  Further, the elastic belt member 12 manufactured by sandwiching the elastic member 4 for body fitting (if necessary, the elastic member 5 around the leg) between the two webs 10 and 11 with the same tension is divided into two parts. When the disposable pants 1A are worn, since the tension (contraction force) of the elastic members 4 and 5 of the front part P and the back part Q is not different, wrinkles are unlikely to occur in the front part P and the back part Q. The appearance can be improved and the commercial value of the disposable pants 1A can be improved.

  Further, in the step 3 for dividing the elastic belt material 12 into two in the width direction, the convex portions 12a and the concave portions 12b are cut so as to appear alternately, and in the next step 4, the first elastic belt material 12A divided into two is divided. And the second elastic belt member 12B are shifted in the length direction A and separated in the width direction W so that the convex portion 12a and the concave portion 12b have the same phase, whereby the absorbent body 2 is The elastic belt member 12A and the second elastic belt member 12B can be attached across both convex portions 12a. Thereby, since the absorber 2 can be respectively attached to the convex part 12a of a large space, attachment can be performed reliably.

  Moreover, since a part of absorber 2 can be covered with both the convex parts 12a of 12A of 1st elastic belt materials and the 2nd elastic belt material 12B, since the absorber 2 approximates a pants shape, it looks good. Thus, the commercial value of the disposable pants 1A can be improved.

  Further, by attaching the absorber 2 across the portion 12c where the contraction force in the vicinity of the convex portion 12a of the first elastic belt member 12A and the second elastic belt member 12B is reduced, the contraction force does not act on the absorber 2. . Thereby, since the absorber 2 is not contracted by the contraction force, the adhesion to the body can be improved.

  FIGS. 9A and 9B show the first embodiment of the disposable pants 1A according to the first embodiment corresponding to FIG. 13A, where FIG. 9A is a plan view in an unfolded state, and FIG. 9B is a side sectional view. A body fluid diffusion sheet 2b is provided between the core 2a and the top sheet 20d.

  FIG. 10 shows the disposable pants 1B of the second embodiment that is specifically commercialized corresponding to FIG. 13B, and FIG. 10A shows the first elastic belt material 12A and the second elastic belt material 12B in step 3. FIG. 4B is a plan view in a developed state.

  The first point different from the disposable pants 1A of FIG. 9 is the cut in the above-described step 2, and the width W2 of the convex portion 12a on the first elastic belt material 12A side is narrowed and the convexity on the second elastic belt material 12B side is The width W3 of the part 12a is increased. Thereby, since the width W2 of the convex part 12a of the front part P becomes narrow, the crotch part of the front part P does not become wrinkled at the time of wearing, and the width W2 of the convex part 12a of the back part Q becomes wide. Can cover minutes widely. Thereby, the appearance is improved and the commercial value of the worn article can be improved.

  Further, a second point different from the disposable pants 1A of FIG. 9 is that the leg rotating elastic member 5 is sandwiched between the convex portions 12a of the first elastic belt material 12A and the second elastic belt material 12B. .

  The leg elastic member 5 is sandwiched between the outer web 10 and the inner web 11 in the lengthwise direction A of the webs 10, 11 with the body fit elastic member 4 extended between the outer web 10 and the inner web 11. When sandwiched, they can be sandwiched at the same time (see FIG. 1). Thereby, the adhesiveness with respect to the leg part of the body of each convex part 12a can be improved.

  Further, in the above-described step 2, when the process of reducing the contraction force of the body fit elastic member 4 in the vicinity of the convex portions 12a of the first elastic belt material 12A and the second elastic belt material 12B is performed, the leg-around elasticity The member 5 can also be processed to reduce the contraction force to form the portion 12c with a reduced contraction force.

  FIGS. 11A and 11B show the disposable pants 1C of the third embodiment that is specifically manufactured corresponding to FIG. 13C, where FIG. 11A is a plan view of the absorbent body 2, and FIG. 11B is a plan view of the unfolded state. It is.

  Basically, it is the same as the disposable pants 1B of FIG. 10, except that the recess 2c is formed on both sides of the absorbent body 2 and the leg elastic member 6 is bonded along the recess 2c. ing.

  In the step 5, the leg elastic member 6 is bonded between the back sheets 20a and 20b in an expanded state before the back sheets 20a and 20b are bonded with a hot-melt adhesive or the like. (See FIG. 1).

  The recess 2c of the absorbent body 2 is connected to the outer shape line of each convex portion 12a of the first elastic belt material 12A and the second elastic belt material 12B, so that it fits more around the leg of the body and the leg elastic member 6, in combination with the leg-rotating elastic member 5, the adhesion to the crotch of the body on both sides of the absorber 2 can be improved.

  FIG. 12 shows the disposable pants 1D of the fourth embodiment that is specifically manufactured corresponding to FIG. 13D, and FIG. 12A shows the first elastic belt material 12A and the second elastic belt material 12B in step 3. FIG. 4B is a plan view in a developed state.

  Basically, it is the same as the disposable pants 1B of FIG. 10, but the first difference is that when the first elastic belt material 12A and the second elastic belt material 12B are manufactured in the step 3, the disposable pants 1B are disposable. The convex portion 12a and the concave portion 12b are formed so as to form a gentle curve over the entire width W4 of the pants 1D.

  Further, the second point different from the disposable pants 1B of FIG. 10 is that in the step 4, the first elastic belt material 12A and the second elastic belt material 12B are arranged so that the convex portions 12a and the concave portions 12b are in phase. In addition, the half phase is not shifted in the length direction A, and the width direction W is simply separated at a constant interval W1 [see FIG. 6 (d)].

  In the disposable pants 1D, a part of the step 4 for shifting the phase is unnecessary, so that the manufacturing process can be simplified.

  Further, the third point different from the disposable pants 1B of FIG. 10 is that the absorbent body 2 is not rectangular, but has a trapezoidal shape with a narrow front part P side and a wide back part Q side. It is twisted so that the P side is formed inward and the back portion Q side is formed outward.

  In combination with the widening of the back portion Q side due to the twist of the rising flap 8, the back portion Q side of the absorbent body 2 is wide, and in particular, side leakage from the back portion Q side can be more effectively prevented.

DESCRIPTION OF SYMBOLS 1A-1D Pants 2 Absorber 3 Elastic member for waist 4 Elastic member for body fit 5 Elastic member for leg rotation 6 Elastic member for leg 8 Flap 10 Outer web 11 Inner web 12 Elastic belt material 12A Elastic belt material 12B Elastic belt Material 12a Convex part 12b Concave part 15 Cutter

Claims (9)

A step of producing an elastic belt material by sandwiching an elastic member between the two webs in an elongated state in the length direction of the web;
Prior to dividing the elastic belt material into two first elastic belt materials and second elastic belt materials in the width direction so that convex portions and concave portions appear alternately, the first elastic belt material and the second elastic belt material are divided. Reducing the contraction force of the elastic member in the vicinity of the portion constituting the convex portion of the belt material;
Dividing the elastic belt material into the first elastic belt material and the second belt material;
Separating the first elastic belt material and the second elastic belt material in the width direction;
A step of shifting the phase of the first elastic belt material and the second elastic belt material in the length direction so that the respective convex portions and the concave portions have the same phase;
The manufacturing method of the disposable wearing article characterized by including the process of attaching an absorber across the site | part which made the contraction force of a 1st elastic belt material and a 2nd elastic belt material small. The said elastic member is an elastic member for body fitting, The manufacturing method of the disposable wearing article of Claim 1 including the process of adhere | attaching the elastic member for waist to the said elastic belt material in the expansion | extension state. The said elastic member is an elastic member for body fits, and an elastic member around a leg, The manufacturing method of the disposable wearing article of Claim 1 including the process of adhere | attaching the elastic member for waist to the said elastic belt material in the expansion | extension state. 4. The method according to claim 1, further comprising a step of bending the absorbent body and overlapping the first elastic belt member and the second elastic belt member and side-sealing both side portions of the first elastic belt member and the second elastic belt member. A method for producing the disposable wearing article according to claim 1. The disposable wearing article according to any one of claims 1 to 4, wherein the step of reducing the contraction force of the elastic member is performed in a state where the elastic belt member is stretched along a roll while being vacuumed. Manufacturing method. The step of dividing the elastic belt material into the first elastic belt material and the second elastic belt material is such that the width dimension of the convex portion of the first elastic belt material is smaller than the width dimension of the convex portion of the second elastic belt material. The said elastic belt material is divided | segmented so that it may become, The manufacturing method of the disposable wearing article of any one of Claims 1-5 characterized by the above-mentioned. The manufacturing method of the disposable wearing article of any one of Claims 1-6 by which the rising flap is provided in the both sides of the said absorber. The manufacturing method of the disposable wearing article according to claim 7, wherein the rising flap is twisted so that a front side is formed inward and a back side is formed outward. The manufacturing of the disposable wearing article according to any one of claims 1 to 8, wherein a recess is formed on both sides of the absorbent body, and an elastic member for a leg is bonded in an extended state along the recess. Method.

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