JP2000288022A - Recording of absorptive article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a process for production of absorptive articles which is capable of easily and simply producing the absorptive article provided with three-dimensional guards respectively on both right and left sides on a front surface sheet side and the front and rear thereof. SOLUTION: This process for producing the absorptive articles executes a combined sheet material continuous body forming stage S1 for forming a ladder-like combined sheet material continuous body 161d combined with respective sheet materials by installing continuous bodies 161c of third sheet materials for forming the three-dimensional guards on both end sides to the continuous bodies 161a and 161b of the first and second sheet materials for forming the three-dimensional guards on both right and left sides while transporting these continuous bodies respectively in parallel, a main body continuous body forming stage S2 for forming the continuous body 110 of the main body by interposing an absorber 4 between the continuous body 103 of the leakproof sheet and the continuous body 102 of the front surface sheet, and an arranging and cutting stage S3 for obtaining the discrete absorptive articles by disposing the combined sheet material continuous body 161 in the prescribed position of the continuous body 110 of the main body and cutting the same in the prescribed position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing an absorbent article which is excellent in leak prevention and can easily manufacture an absorbent article such as a disposable diaper which does not stuffy when worn.

[0002]

2. Description of the Related Art Generally, in an absorbent article such as a disposable diaper, a leak is generated from a waist portion abutting around a waist of a wearer or a leg portion located around a leg. Various proposals have been made to prevent leakage at such sites.

[0003] Specifically, a three-dimensional guard is formed on the leg part and on both the abdominal side and the dorsal side.
Disposable diapers with high leakage prevention (Patent No. 251762)
No. 2) has been proposed. However, when manufacturing such a disposable diaper, it is necessary to attach each of the three-dimensional guards in a separate process and the like, which requires time and effort.

Accordingly, an object of the present invention is to provide a simple and convenient method for manufacturing an absorbent article provided with a three-dimensional guard on each of the left and right sides of the top sheet and at least one of the front and rear sides. An object of the present invention is to provide a method for manufacturing an absorbent article.

[0005]

SUMMARY OF THE INVENTION The present invention comprises a substantially elongated body having a liquid permeable topsheet, a liquid impermeable leakproof sheet, and a liquid retaining absorber. A method of manufacturing an absorbent article provided with a three-dimensional guard on at least one of the left and right sides and both ends of the sheet material, comprising: a composite sheet material continuous body forming step, a main body continuous body forming step, and an arrangement cutting step. In the composite sheet material continuum forming step, the first and second sheets are conveyed in parallel with the continuum of the first and second sheet materials for forming the three-dimensional guard on both the left and right sides, respectively. For a continuum of material,
A continuum of the third sheet material for forming the three-dimensional guard is provided at both ends so as to be orthogonal to these, and the first sheet material, the second sheet material, and the third sheet material for forming the three-dimensional guard are combined. Ladder-like composite sheet material continuum is formed, and in the main body continuum forming step, an absorber is interposed between the continuum of the leak-proof sheet and the continuity of the topsheet, thereby forming the continuum of the main body. Forming, in the arrangement cutting step, disposing the composite sheet material continuum obtained in the composite sheet material continuum formation step at a predetermined position of the continuum of the main body obtained in the main body continuum formation step, The above object has been achieved by providing a method for manufacturing an absorbent article which obtains individual absorbent articles by cutting at predetermined positions.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the method for producing an absorbent article according to the present invention will be described below. First, one embodiment of an absorbent article obtained by the method for producing an absorbent article of the present invention will be described. The disposable diaper 1 as an absorbent article of the present embodiment obtained by the production method of the present invention includes a liquid-permeable top sheet 2, a liquid-impermeable leakproof sheet 3, and It comprises a substantially elongated body 10 comprising a liquid-retentive absorber 4. In the disposable diaper 1 of the present embodiment, the absorber 4 is sandwiched and fixed between the topsheet 2 and the leakage prevention sheet 3. In addition, the leakage prevention sheet 3 is wound up on both left and right sides of the absorber 4. A waist elastic member 81 is disposed in each of the waist openings 8 in the abdominal part A located on the abdominal side of the wearer and the dorsal part B located on the dorsal side to form waist gathers. . A fastening tape 11 for disposable diaper fastening is provided on each of the left and right side edges B1 and B2 of the back side B. The outer layer nonwoven fabric 5 is disposed on the surface of the leakage prevention sheet 3. The outer layer nonwoven fabric 5 extends so that both side edges thereof are located outside the side edges 4a of the absorber 4, and a pair of left and right leg portions 7 is formed by the extended portions. I have.

[0007] In the disposable diaper 1 of the present embodiment, a three-dimensional guard is provided on each of the left and right sides in the longitudinal direction and both ends in the longitudinal direction of the main body 10. In the disposable diaper 1 of the present embodiment, the three-dimensional guard 6 includes side three-dimensional guards 6C, 6C provided on the left and right sides of the diaper, and a back three-dimensional guard 6B provided on the back part B.
Further, an abdominal three-dimensional guard 6A provided on the abdominal part A is provided. That is, the three-dimensional guard 6 is provided on both the left and right sides and both ends in the longitudinal direction of the disposable diaper.
The elastic portions 64 include side elastic portions 64C provided on the side solid guards 6C, 6C, a back elastic portion 64B provided on the back solid guard 6B, and a ventral side provided on the abdominal solid guard 6A. An elastic portion 64A is provided.

More specifically, the side solid guards 6C, 6
C is formed by arranging a sheet material 61 for forming a three-dimensional guard on both left and right sides of the diaper, and the sheet material 61 is extended outward on both side edges of the absorber 4 to form an outer layer nonwoven fabric. 5 is attached. Back and ventral solid guard 6
B and 6A are the back part B and the abdominal part A of the diaper, respectively.
In addition, a sheet material 61 for forming a three-dimensional guard is arranged such that its outer edge 61a is located at the edge of the waist portion. The base end 60 of each of the three-dimensional guards 6A, 6B, 6C, 6C is formed by bonding and fixing a sheet material 61 to the top sheet 2 above the absorber 4.

The side elastic portions 64C, 64C, the back elastic portion 64B and the abdominal elastic portion 64A are formed by arranging a plurality of string-like elastic members 64a at predetermined intervals. In addition, each elastic member 64a is provided along the longitudinal direction of each three-dimensional guard and over substantially the entire area in the longitudinal direction. Also, the side elastic portions 64C, 6
4C, four elastic members 64a are respectively arranged and formed, and the back side elastic portion 64B is provided with an elastic member 6a.
4a are formed by arranging four abdominal elastic portions 64.
A is provided with three elastic members 64a.

The side solid guard 6C, the back solid guard 6B and the abdominal solid guard 6A are connected to each other. That is, in the present embodiment, the side solid guard 6C, the back solid guard 6B, and the abdominal solid guard 6B are provided.
A is a belt-like shape, and each side solid guard 6
Both longitudinal ends of C are connected to longitudinal ends of the back three-dimensional guard 6B and the abdominal three-dimensional guard 6A. Thus, a rectangular opening 12 is formed by each three-dimensional guard. In addition, each three-dimensional guard 6A, 6B,
6C, 6C are connected so that the longitudinal ends of the elastic members 64a overlap with each other, and the shrinkage force of each of the elastic portions 64A, 64B, 64C, 64C causes the absorber, the topsheet, and the leakage prevention. The main body of the disposable diaper constituted by the sheet is curved so as to be substantially cup-shaped. In addition, each three-dimensional guard 6A, 6B, 6C, 6
Below the C, a pocket 13 is formed between the three-dimensional guards 6A, 6B, 6C, 6C and the topsheet 2 between them.

Further, in the disposable diaper 1 of the present embodiment, no elastic member is provided on the leg portion 7.

As a material for forming each member constituting the disposable diaper 1 of the present embodiment, a material usually used for this kind of disposable diaper can be used without any particular limitation.

As shown in FIG. 4, one embodiment of the method for manufacturing an absorbent article according to the present invention is a continuous body 161 of the first and second sheet materials for forming the three-dimensional guard on the right and left sides.
a. 161b while conveying them in parallel, respectively, while the continuum 161a. A continuum 161c of a third sheet material for forming a three-dimensional guard is attached to both ends of the three-dimensional guard 161b so as to be orthogonal to these, and the first sheet material, the second sheet material, and the third sheet material for forming each three-dimensional guard are provided. To form a ladder-shaped composite sheet material continuum 161d in which the composite material is composited, and the absorber between the continuity 103 of the leak-proof sheet and the continuity 102 of the topsheet. 4 to form the continuum 110 of the main body, forming the continuum 110 of the main body, and forming the continuity of the composite sheet material at a predetermined position of the continuum 110 of the main body obtained in the step of forming the continuity of the main body. The arrangement and cutting step S3 of arranging the composite sheet material continuous body 161d obtained in the step and cutting at a predetermined position to obtain individual absorbent articles can be performed. Steps other than these steps can be performed in the same manner as in a method for manufacturing an absorbent article such as a normal disposable diaper.

The details will be described below. The composite sheet material continuum forming step S1 includes a first and second continuum 161a, 161b of the first and second sheet materials for forming the three-dimensional guard on both the left and right sides.
Are respectively conveyed in parallel while being unwound from a raw roll (not shown). Here, the continuum 1 of each sheet material
When the 61a and 161b are unwound from the material roll, a predetermined number of elastic members 64a are provided at a predetermined interval after applying an adhesive by a known method. Specifically, the continuum 161a, 161b of the first and second sheet materials
In the above, a predetermined number (four) of elastic members 64a having a predetermined length are arranged at predetermined intervals on the inner edge side of the side elastic portions 64C, 64C. In the continuous body 161c of the third sheet material, the raw roll 161 is used.
When unwinding from c ', the abdominal and dorsal elastic portions 64A, 64
For B, elastic members 64a of a predetermined length on both sides thereof,
At a predetermined interval, a predetermined number (4 to form the back side)
Book, and three who form the ventral side), and are arranged after applying an adhesive by a known method. Next, the continuum 161c of the third sheet material is inserted into the continuum 161a, 161b of the first and second sheet materials so as to be orthogonal to the continuum of the second sheet material from the outer edge of the continuum 161a of the first sheet material. Continuum 1
Along the outer edge of 61b, it is cut along the outer edge of the continuous body 161b of the second sheet material. In this way, a ladder-shaped composite sheet material continuous body 161d in which the first sheet material, the second sheet material, and the third sheet material for forming each three-dimensional guard are composited is formed. At this time, the portions where the continuous bodies 161a and 161b of the first and second sheet materials abut on the continuous body 161c of the third sheet material are fixed with an adhesive therebetween.

In the main body continuum forming step S2, the absorber 4 adjusted to a predetermined size is connected to the continuum 10 of the leakproof sheet.
3, and further cover the absorber 4 with the continuous body 102 of the top sheet so as to further sandwich the absorber 4, and hold and fix the absorber 4 to form the continuous body 110 of the main body. Performed by Further, in this step, the continuous body 105 of the outer layer nonwoven fabric is disposed on the back side (the surface of the continuous body 103 of the leak-proof sheet) in the continuous body 110 of the main body.

The arranging and cutting step S3 includes the step of
The absorber 4 in 10 is a sheet material 161a, 161
b, 161 c so that the opening 12 is located on the absorber 4 so that the topsheet 2
The composite sheet material continuous body 161d is disposed on the side, and each sheet material 161a, 1 is formed on the continuous sheet 102 of the top sheet on the side edge of the absorber 4 so that the above-described base end 60 is formed.
61b and 161c are fixed. In addition, the outer side from the base end 60 is entirely covered with the outer layer nonwoven fabric 5 or the surface sheet 2 via an adhesive.
Stick to Then, at the intermediate portion between the abdominal elastic portion 64A and the back elastic portion 64B of the third sheet material, the sheet material 1
61a, 161b, 161c, continuum of topsheet 10
2. The continuous body 103 of the leakproof sheet and the continuous body 105 of the outer nonwoven fabric are cut to obtain individual absorbent articles.

By manufacturing as described above, an absorbent article such as a disposable diaper in which three-dimensional guards are formed on both side edges and both end sides of the main body can be obtained simply and easily.

In the above description of the embodiment, the deployment type disposable diaper has been described as an example. However, the present invention is not limited to this, and the pants type disposable diaper,
Further, it can be applied to incontinence pads, sanitary napkins, and the like. In addition, although an example having a wide elastic portion has been described,
An elastic member may be provided only at a free edge without having such an elastic portion. In addition, although an example in which the three-dimensional guards are disposed at both ends has been described, the three-dimensional guard may be provided at any one of the ends.

[0019]

According to the method of manufacturing an absorbent article of the present invention, an absorbent article provided with a three-dimensional guard on each of the left and right sides on the top sheet side and at least one of the front and rear sides can be easily and simply prepared. Can be manufactured.

[Brief description of the drawings]

FIG. 1 is a perspective view of a disposable diaper as one embodiment of an absorbent article obtained by a method of manufacturing an absorbent article according to the present invention, as viewed from a top sheet side in a free state.

FIG. 2 is a sectional view taken along line XX of FIG. 1;

FIG. 3 is a sectional view taken along line YY of FIG. 1;

FIG. 4 is a schematic view showing a main part of an embodiment of the method for manufacturing an absorbent article according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disposable diaper 10 Absorbent main body 11 Fastening tape 2 Top sheet 3 Leak-proof sheet 4 Absorber 6 Solid guard 60 Base end 61 Sheet material 63 Free edge 64 Solid gather elastic member 65 Elastic part 7 Leg part 8 Waist opening 81 Waist Elastic member A Ventral part B Back part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hidekazu Ito 2606 Kabane-cho, Akaga-cho, Haga-gun, Tochigi Pref. In the Kao Corporation Research Laboratory (72) Inventor Takao Koyama 2606, Kaga-cho, Akabane-shi, Haga-gun, Tochigi Pref. Terms (reference) 3B029 BD12 BD13 BD14 BF04 BF05 BF07 4C003 GA05 4C098 AA09 CC07 CC10 CE06

Claims (1)

[Claims] 1. A substantially vertically elongated main body comprising a liquid-permeable topsheet, a liquid-impermeable leakproof sheet, and a liquid-retentive absorber, and at least on both left and right sides and both end sides of the main body. A manufacturing method for manufacturing an absorbent article provided with a three-dimensional guard provided on any one of the three-dimensional guards, comprising: a composite sheet material continuous body forming step, a main body continuous body forming step, and an arrangement cutting step; In the material continuum forming step, the continuum of the first and second sheet materials for forming the three-dimensional guard on both the left and right sides is conveyed in parallel to each other, A continuum of a third sheet material for forming a three-dimensional guard at both ends is provided so as to be orthogonal to the first sheet material, the second sheet material, and the third sheet material for forming a three-dimensional guard.
Forming a ladder-like composite sheet material continuum in which the sheet material is composited, in the main body continuum forming step, interposing an absorber between the continuum of the leak-proof sheet and the continuum of the topsheet Forming a continuum of the main body; in the disposing and cutting step, at a predetermined position of the continuum of the main body obtained in the main body continuum forming step, the composite sheet material obtained in the composite sheet material continuum forming step A method of manufacturing an absorbent article in which a continuous body is arranged and cut at a predetermined position to obtain individual absorbent articles.