JPH06296643A - Absorptive articles and their production - Google Patents

Abstract

PURPOSE:To provide the absorptive articles having high effect of preventing leakage and excellent wearing feel by parallel arranging elastic members in a groin part, eliminating the intersected part of these elastic members in the opening peripheral edges of leg apertures and arranging the elastic members over the entire periphery of the opening peripheral edges. CONSTITUTION:The absorptive articles include a liquid permeable top sheet 1, a liquid impermeable back sheet 2 corresponding thereto and an absorptive body 10A having an absorber 3 which is arranged therebetween and absorbs excreta. The absorptive body 10A consists of an abdominal side part 11, the groin part 12 and a back side part 13. In the absorptive body 10A, the first and second elastic members 15a, 15b, are extended and fixed respectively in the abdominal side part and back side part along the inner side of a part of the side edges 11a, 13a on one side respectively of the abdominal side part 11 and the back side part 13 and the inner side of the one side edge 12a of the groin part 12 in such a manner that the elastic members are arranged across the center of the groin part 12 and along the inner side of the side edges 12a, 11a, 13a on the other side. These elastic members are arranged in parallel with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorbent article, particularly an absorbent article used as a pants-type disposable diaper for infants, adults or incontinent persons, and a method for producing the same.

[0002]

2. Description of the Related Art A pants-type disposable diaper is provided with an absorbent main body having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body arranged between these sheets. The main body is composed of an abdominal part, a crotch part and a dorsal part, and both side edges of the abdominal part and the dorsal part are joined and fixed to form a waist opening and a pair of leg openings. Things are known. (JP-A-6
(See Japanese Patent Publication No. 1-207605)

The pants-type disposable diaper described above is constructed such that a pair of leg openings and one waist opening are formed so as to be expandable and contractable to fit the body shape, and the wearer usually stands upright. Since it can be worn in a state, it is used for toilet training to promote "diaper separation" of infants, and for incontinence or for walkable adults. Further, this type of pants-type disposable diaper is characterized in that the wearer can raise and lower the same as with ordinary underwear, as compared with a so-called flat-type diaper.

In the pants-type disposable diaper as described above, in order to improve the effect of preventing leakage from the leg openings, elastic members are arranged at the peripheral edges of the pair of leg openings to form gathers. Those disclosed are also known (JP-A-58-115106 and JP-A-58-1).
15107, JP-A-3-33201, JP-A3-1
(See each gazette of 39349 and Jitsukaihei 3-16920).

Further, the above publication suggests a continuous manufacturing method of pants-type disposable diapers, and JP-A-57-77304 discloses a continuous manufacturing method of pants-type disposable diapers as described above. It is disclosed. Also,
Japanese Unexamined Patent Publication Nos. 57-77304 and 117602 (Bussac) disclose techniques relating to gathers in which there is no gather in the crotch or where the gathers intersect at one point.

[0006]

However, the pants-type disposable diapers described in both JP-A Nos. 58-115106 and 115107 described above have gathers arranged at the hem mouths of the Bermuda-type pants. Since the wearer cannot follow the movement of the wearer, the fit is poor, and excrement easily leaks, or the thighs are likely to have gather marks.

Further, the pants-type disposable diapers disclosed in Japanese Patent Laid-Open No. 3-33201 and Japanese Utility Model Laid-Open No. 3-16920 have elastic members on the opening peripheral edge portions 22a, 22a of the leg opening portions 22, 22 as shown in FIG. 15 and 15 are continuously arranged, but the intersection 14 of the elastic members 15 and 15
Exists in the opening peripheral edge portion 22a. Since the contraction stress of the elastic member 15 at the intersection 14 is small, the elastic member 15 is likely to leak from the intersection, and there are some marks on the thighs such as gather marks, and there is a problem in the wearing feeling, and the appearance is preferable. Is hard to say.

Further, in the continuous production method suggested in the above-mentioned JP-A-3-139349 and Japanese Utility Model Laid-Open No. 3-16920, only the diaper having the above-mentioned problems and the like can be produced, and also in the production. However, the swing width of the gather is large and there is a drawback that it cannot be produced at high speed. Further, even in the case of the continuous manufacturing method described in JP-A-57-77304, it is possible to manufacture only the diaper in which the elastic member is arranged at the crotch portion of the diaper, and the obtained diaper is
The elastic member is not provided on the entire circumference of the opening peripheral edge of the leg opening.

Therefore, an object of the present invention is to provide an absorbent article having a high leakage prevention effect and an excellent wearing feeling, and a continuous manufacturing method of the absorbent article.

[0010]

As a result of various studies on the structure of a pants-type disposable diaper, the inventors of the present invention have gathers (that is, elastic members) arranged in parallel with each other in the crotch region, and the peripheral portions of the leg openings. It was found that the above object can be achieved by using a pants-type disposable diaper in which the elastic member does not have an intersecting portion and the elastic member exists on the entire circumference of the opening peripheral edge portion.

The present invention has been made based on the above findings, and has an absorbent main body having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between these sheets. The absorptive body is composed of an abdominal part, a crotch part and a dorsal part, and both side edges of the abdominal part and the dorsal part are joined and fixed to form a waist opening and a pair of parts. An absorbent article in which leg openings are formed and gathers are formed at the opening peripheral portions of each of the at least one pair of leg openings, wherein one side of each of the ventral side portion and the back side portion of the absorbent main body is provided. Along the inside of a part of the edge part and along the inside of one side edge part of the crotch part, across the center of the crotch part, and along the inside of the other side edge part, the elastic member is arranged, At least first and second elasticity Wood stretched fix, and each elastic member is to provide an absorbent article, characterized by being arranged parallel to each other in the crotch portion center.

The present invention also provides a method for producing the absorbent article of the present invention, wherein a first liquid elastic member and a second elastic member are provided on a continuous liquid-impermeable backsheet having a predetermined width. After swinging in the width direction of the back sheet at intervals and stretching and fixing, a plurality of absorbers are arranged on the elastic member at regular intervals, and then a continuous liquid permeation of a predetermined width is performed on the absorber. And a manufacturing step of manufacturing an absorbent main body continuous body in which the elastic member is stretched and fixed to the outer periphery of both side edges of at least the crotch portion of each of the absorbent bodies, respectively. In the cutting step of cutting the absorbent main body continuum obtained in the above, to obtain a plurality of absorbent main bodies at the central portions between the adjacent absorbent bodies, both sides of the abdominal side and the back side of each absorbent main body. And a joining step of joining and fixing the edges. There is provided a method of manufacturing an absorbent article according to claim Rukoto.

Furthermore, the present invention provides, as another preferable method for producing the above-mentioned absorbent article of the present invention, between backsheet layers composed of a laminate of at least two continuous layers having a predetermined width.
After swinging and tensioning the first and second elastic members in the width direction of the back sheet at predetermined intervals, a plurality of absorbers are arranged on the back sheet at regular intervals, and then, An absorbent material in which a continuous liquid-permeable top sheet having a predetermined width is arranged on the absorbent body, and the elastic members are stretched and fixed at least near the outer sides of both side edges of the crotch portion of each absorbent body. A manufacturing process for manufacturing a main body continuous body, a cutting process for cutting a plurality of absorbent main bodies by cutting the absorbent main body continuous body obtained in the above manufacturing process at a central portion between adjacent absorbent bodies, and each absorption And a joining step of joining and fixing both side edge portions of the ventral side portion and the back side portion of the sex main body.

[0014]

According to the absorbent article of the present invention, the elastic member is arranged in parallel to the crotch portion, there is no intersection of the elastic members in the opening peripheral edge of the leg opening, and the entire circumference of the opening peripheral edge is provided. Since the elastic member is arranged, the leakage prevention effect is sufficiently exerted when worn, and the wearing feeling is excellent.

Further, according to the manufacturing method of the present invention, at least the first and second elastic members are swung in the width direction of the continuous back sheet at predetermined intervals, respectively, and stretched and fixed at predetermined positions. Therefore, the absorbent article of the present invention can be easily and continuously manufactured.

[0016]

EXAMPLES First, a pants-type disposable diaper, which is an example of the absorbent article of the present invention, will be described with reference to the drawings. FIG. 1 is a perspective view showing a pants-type disposable diaper which is an embodiment of the absorbent article of the present invention, and FIG. 2 is a plan view showing a partially omitted absorbent main body in a developed state.

The pants-type disposable diaper 20 of this embodiment
As shown in FIG. 1, a liquid-permeable topsheet 1 forming a side contacting the wearer's skin, a liquid-impermeable backsheet 2 corresponding to the topsheet 1, and a liquid-permeable topsheet 1 disposed between these sheets. The absorbent body 10A has an absorbent body 3 that absorbs excrement, and the absorbent body 10A includes the abdomen 1
1, a crotch portion 12 and a back side portion 13, and both side edge portions 11 of the abdominal side portion 11 and the back side portion 13, respectively.
It is configured by joining and fixing a, 11a and 13a, 13a to form a waist opening 21 and a pair of leg openings 22, 22. These configurations are the same as the conventional product.

Thus, the absorbent main body 10A used in the pants-type disposable diaper 20 of this embodiment has its central portion (the crotch portion) in its unfolded state (before joining), as shown in FIG. 12) has a constricted shape on both sides, and the inside of a part of the side edge portions 11a and 13a of each of the ventral side portion 11 and the back side portion 13 and one of the crotch portions 12 are formed. Along the inside of the side edge portion 12a, traverses the center of the crotch portion 12 and the other side edge portions 12a, 1
The first elastic member 15a is stretched and fixed on the ventral side and the second elastic member 15b is stretched and fixed on the back side so that the elastic members are arranged along the inner sides of the la and la, respectively, and The first and second elastic members 15a and 15b are arranged close to each other in parallel at the center of the crotch portion 12.

The absorbent main body 10A will be further described. The distance between the first elastic member 15a and the second elastic member 15b in the crotch portion 12 is such that excrement does not leak, and the outermost portions of each of the outermost parts are separated. It is desirable that the elastic member is in the range of 0 to 20 mm. If it is smaller than 0 mm, a region surrounded by the elastic member is generated as shown in FIG. 10, which is not bad in appearance, and the contracting force of the elastic member is obstructed at the intersecting portion, so that leakage from the portion is likely to occur. If it exceeds 20 mm, a region in which the elastic member is not arranged is generated at the peripheral edge of the leg opening, and similarly, leakage easily occurs from the region.

In the crotch part 12, it is not always necessary to fix the elastic member, but rather it is preferable not to fix the elastic member in terms of appearance and in that expansion and contraction stress of the elastic member is not hindered.

The first elastic member 15a and the second elastic member 15b do not have to be one in number, and a plurality of thread-like members may be arranged at intervals. Is the first and second elastic members 15
You may arrange | position so that expansion-contraction stress of a and 15b may differ.
When a plurality of members are arranged, the distance between the respective members is preferably in the range of 0.5 to 5 mm.

The pants-type disposable diaper 20 of this embodiment
As shown in FIG. 1, the absorbent main body 10A described above is provided with both side edge portions 11a, 11a of the ventral side portion 11 and the back side portion 13 thereof.
By joining and fixing the both side edge portions 13a, 13a, elastic elastic portions 24, 24 are formed by the elastic members 15a, 15b, respectively, and by the elastic annular portions 24, 24,
A pair of leg openings 22 and opening peripheral edges 2 of each
2a and 22a are formed with gathers 23 and 23, respectively. Incidentally, in FIG. 1, for convenience, the elastic members 15a and 15b are indicated by solid lines where they should be indicated by broken lines.

It is preferable that the joint portion of the absorbent main body 10A described above can be easily torn in the longitudinal direction, so that the disposable diaper 20 is not spoiled on the wearer's skin. Can be easily torn and the disposable diaper 20 can be easily removed and discarded. Further, it is preferable that, for example, a hot melt type adhesive or a material that can be bonded by ultrasonic waves is used for the bonding portion, and that the feeling is soft even after bonding.

The disposable diaper 20 of this embodiment is
The crotch region of the absorbent body 3 is formed into a checkered hourglass shape,
The crotch region of each of the top sheet 1 and the back sheet 2 is also formed into a curved shape in accordance with the shape of the absorber 3 as described above.

The top sheet 1 used in the disposable diaper 20 of this embodiment is preferably a liquid permeable sheet that allows excrement to permeate into the absorbent body 3 and has a feeling close to that of underwear. As the sheet, for example, woven cloth, non-woven cloth, porous film and the like are preferable.

The top sheet 1 may be coated with a hydrophobic compound such as a silicone oil or paraffin wax on the periphery thereof, or may be coated with a hydrophilic compound such as an alkyl phosphate ester on the entire surface in advance, and then the periphery thereof may be covered. By the method of washing with warm water, the peripheral edge of the top sheet 1 can be subjected to water repellent treatment to prevent leakage of urine or the like from the peripheral edge.

The back sheet 2 used in the disposable diaper 20 of this embodiment is preferably a sheet which is formed by adding a filler to a thermoplastic resin and is stretched, which has vapor permeability and is liquid impermeable, and Those having a feeling close to that of underwear are preferable. As such a liquid impermeable sheet, for example, a composite material of a film and a non-woven fabric or the like is preferable.

The absorbent body 3 used in the disposable diaper 20 of the present embodiment is preferably one in which a high-molecular water-absorbing polymer mainly composed of defibrated pulp is used in combination, and also a thermoplastic resin, a cellulose fiber, a high-molecular water-absorbing polymer. A mixture obtained by heat-treating the mixture is preferable. The location of the high-molecular water-absorbing polymer may be any of the upper layer, the middle layer, and the lower layer of the absorber 3, or may be a mixture with the pulp. Further, the high molecular weight water-absorbing polymer is preferably in the form of particles having a retaining property capable of absorbing and retaining a liquid 20 times or more its own weight and having a gelling property. For example, starch-acrylic acid (salt) graft copolymers, saponified starch-acrylonitrile copolymers, crosslinked sodium carboxymethyl cellulose, acrylic acid (salt) polymers and the like are preferable.

The elastic stretchable members (such as the elastic members 15a and 15b) used in the disposable diaper 20 of this embodiment are
A rubber thread, a flat rubber, a film type rubber or a film-like polyurethane foam is preferable, and a stress at 150% elongation of 70 to 100 g is preferable, and a non-woven fabric type having elasticity and breathability. Those are preferable.

The pants-type disposable diaper 20 of this embodiment
Since the above is configured as described above, it has a high leakage prevention effect and an excellent wearing feeling.

As an absorbent main body forming the pants-type disposable diaper of the present invention, the absorbent main body 10 shown in FIG.
In addition to A, the absorbent main body 10B obtained by cutting the absorbent main body continuous body 10 shown in FIG. 6 in the same manner as when the absorbent main body 10A is obtained from the absorbent main body continuous body 10 shown in FIG.
That is, the first elastic member 15a and the second elastic member 15b are each composed of a plurality of members, and the two elastic members are stretched in the crotch portion 12 so as to be parallel to each other. Even when the sex main body 10B is used, a pants-type disposable diaper having substantially the same configuration as the pants-type disposable diaper 20 shown in FIG. 1 and having the same effect and having a good worn state of the waist can be obtained. To be

Further, as an absorbent main body forming the pants-type disposable diaper of the present invention, another absorbent main body continuum (not shown) is cut in the same manner as described above to obtain absorbent main bodies 10C, 10D and 10E can also be used. These absorbent bodies 10C, 10D and 10E are
As shown in FIGS. 7, 8 and 9, respectively, the first and second elastic members 15a and 15b are each made up of a plurality of members, and the crotch part 12 is maintained in a mutually parallel state. The degree of overlap of the elastic members is changed, 10C indicates that both elastic members are in contact, 10D indicates that both elastic members partially overlap, and 10E indicates that both elastic members completely overlap. These absorbent bodies 10C,
Even when 10D and 10E are used, a pants-type disposable diaper having substantially the same configuration as that of the pants-type disposable diaper 20 shown in FIG. 1 and having the same effect and having a good waist worn state is obtained. can get.

Next, the method for producing the absorbent article of the present invention will be described.
One embodiment of a method for manufacturing the pants-type disposable diaper 20 of the above embodiment will be described with reference to FIGS. 1 to 3. 2 and 3 each show an essential part of one embodiment of the present invention. FIG. 2 is a plan view showing the absorbent body forming the embodiment shown in FIG. It is a top view which shows the continuous body of the absorptive main body used for manufacture of this invention product shown in FIG.

In order to carry out the manufacturing method of the present invention, first, as shown in FIG. 3, a predetermined width (this width corresponds to the length in the longitudinal direction in the unfolded state of the pants-type disposable diaper). 2), the first and second elastic members 15a and 15b are placed on the continuous liquid-impermeable backsheet 2 shown in FIG.
In the longitudinal center of the absorbent body 3 (the crotch portion 12) which is arranged at the same interval as the width L of the absorbent main body 10A shown in FIG. And are stretched and fixed so as to be close to each other on the side of the back sheet 2 in. Next, the absorbent body 3 is arranged such that the approaching portions of the elastic members 15a and 15b are located at the central portion in the width direction of the absorbent body 3 and on the outer surface side of the crotch portion 12, and then the absorbent body 3 A continuous liquid-permeable top sheet 1 (not shown) having a predetermined width is arranged on the top,
The absorbent main body continuous body 10 having the form shown in FIG. 3 is manufactured.

Next, the absorbent main body continuum 10 obtained in the above manufacturing process is cut at the central portions between the adjacent absorbent bodies 3, 3 to obtain a plurality of absorbent main bodies having a shape as shown in FIG. You get 10A. Also, in this cutting step,
At the time of cutting, before or after the cutting, or after joining the both side edges, as shown in FIG.
The top sheet 1 and the back sheet 2 are cut off at the circular portion P shown in FIG. 3 so that the 2a has a curved shape. After that, by joining the side edges 11a, 11a of the abdominal portion 11 and the side edges 13a, 13a of the back portion 13 of each absorbent main body 10A obtained in the cutting step, as shown in FIG. The pants-type disposable diaper 20 of the present invention having the form shown in FIG.

The absorbent main body continuous body 10 obtained in the above-mentioned manufacturing process is provided with both side edge portions 11a and 11a of the abdominal side portion 11 of each absorbent main body 10A and both side edge portions 13 of the back side portion 13.
After joining a and 13a, the adjacent absorbent bodies 3, 3
Absorbent body 1 shown in FIG. 2 cut at the central portion between
It is also possible to obtain 0A.

Further, the elastic member 15 in the above embodiment.
By making a and 15b each composed of three members, it is possible to obtain the absorbent main body continuous body 10 shown in FIG. 6 and the absorbent main body 10B shown in FIG. Furthermore, the elastic members 15a and 1 in the above embodiment
7 to 9 by partially changing the way of swinging 5b.
The absorbent bodies 10C, 10D, and 10E shown in can be obtained. Even when the absorbent main bodies 10B to 10E are used, the pants-type disposable diaper as shown in FIG. 1 can be obtained in the same manner as when the absorbent main body 10A is used.

According to the above-described manufacturing method of the present invention, at least two elastic members are fixedly stretched at predetermined positions by swinging in the width direction of the continuous back sheet at predetermined intervals. From the above, the absorbent main body continuous body can be easily and continuously produced, and the absorbent article of the present invention can be easily and continuously produced from the absorbent main body continuous body.

The above-described embodiment of the absorbent article of the present invention and the embodiment of the manufacturing method therefor are based on the sectional shape taken along line XX in FIG. 2 having a shape (form) as shown in FIG. There is (FIG. 11 shows an example in which the first elastic member 15a or the second elastic member 15b is formed of two members), but the absorbent article and the manufacturing method thereof according to the present invention,
The form and the manufacturing method described below may be used.

That is, in the underpants type disposable diaper which is the absorbent article of the present invention, as shown in FIG. 12, the back sheet 2 is a laminate of at least two layers, and the elastic member 15 (first elastic member) is used. 15a or second elastic member 15
b) may be stretched and fixed at a predetermined position between the laminated bodies, and the absorber 3 may be arranged on the laminated body.
Although a film, a non-woven fabric, or the like is used as the sheet constituting the above-mentioned laminated body, it is sufficient that at least the sheet used as a normal back sheet is arranged on the outermost side.

When manufacturing a disposable diaper having a cross-sectional shape as shown in FIG. 12, the manufacturing process of the absorbent main body continuous body in the above-described embodiment may be changed, for example, as follows. That is, at least the first and second elastic members 15 are oscillated in the width direction of the backsheet 2 at predetermined intervals between the layers of the backsheet 2 made of a laminate of at least two continuous layers having a predetermined width. After being stretched and fixed by tension, a plurality of absorbers 3 are arranged on the back sheet 2 at regular intervals, and then a continuous liquid-permeable top sheet 1 having a predetermined width is arranged on the absorber. You can change to.

The pants-type disposable diaper which is the absorbent article of the present invention has a liquid-permeable top sheet 1 and a liquid-impermeable (or liquid-permeable) sheet 1 ', as shown in FIG. The absorber 3 arranged between the two may be joined and fixed to the inner surface of the back sheet 2 made of the above-mentioned laminated body. In the figure, reference numeral 15 'is an elastic member disposed outside both side edges of the absorber 3.

Then, when manufacturing a disposable diaper having a sectional shape as shown in FIG. 13, the manufacturing process of the absorbent main body continuous body in the above-described embodiment may be changed, for example, as follows. That is, at least the first and second elastic members 15 are oscillated in the width direction of the backsheet 2 at predetermined intervals between the layers of the backsheet 2 made of a laminate of at least two continuous layers having a predetermined width. After being stretched and fixed by tension, the absorbent body 3 previously arranged between the liquid-permeable top sheet 1 and the liquid-impermeable (or liquid-permeable) sheet 1 '.
Can be changed to a mode in which the above is bonded and fixed to the inner surface of the back sheet 2 made of the above-mentioned laminated body.

As shown in FIGS. 12 and 13, in the disposable diaper in which the back sheet 2 is a laminate as shown in FIGS. 12 and 13, the elastic member 1 is provided between the laminates as shown in FIGS.
If 5 is arranged, the contracting force of the elastic member 15 does not directly reach the absorbent body 3, so that the absorbent body 3 does not collapse or, conversely, the contracting force of the elastic member 15 is not impeded.

Needless to say, the absorbent article and the method for producing the same according to the present invention are not limited to the above examples and embodiments. For example, as long as the elastic member is stretched and fixed to a predetermined site as a whole, it may not be fixed to all the sites over the entire length thereof, and the size of each member in the above-mentioned embodiment is It may be set according to the one shown in the drawing or according to the constituent members of the conventional pants-type disposable diaper, and although there is a part where the description is omitted, each member is appropriately a part or all of them. It is fixed by joining with an adhesive or the like.

[0046]

EFFECTS OF THE INVENTION The absorbent article of the present invention has a high leakage prevention effect and an excellent wearing feeling. According to the production method of the present invention, the absorbent article of the present invention having the above-mentioned effects can be easily and continuously produced. Can be manufactured in a simple manner.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an absorbent article of the present invention.

FIG. 2 is a plan view showing an absorbent main body forming the absorbent article shown in FIG. 1 with a part of the absorbent main body omitted.

FIG. 3 is a plan view showing an absorbent main body continuous body used for manufacturing the product of the present invention shown in FIG. 1.

FIG. 4 is a perspective view showing a second embodiment of the absorbent article of the present invention.

FIG. 5 is a view corresponding to FIG. 2 showing an absorbent main body forming the absorbent article of the second embodiment shown in FIG. 4.

FIG. 6 is a plan view showing an absorbent main body continuous body used for manufacturing the absorbent article of the second embodiment shown in FIG. 4.

FIG. 7 is a view corresponding to FIG. 5 (an absorber is omitted) showing another example of the absorbent main body forming the absorbent article of the present invention.

FIG. 8 is a view corresponding to FIG. 5 (an absorber is omitted) showing still another example of the absorbent main body forming the absorbent article of the present invention.

FIG. 9 is a view corresponding to FIG. 5 (an absorber is omitted) showing another example of the absorbent main body forming the absorbent article of the present invention.

FIG. 10 is a view corresponding to FIG. 5 (an absorber is omitted) showing an example of an absorbent main body forming a conventional absorbent article.

11 is a cross-sectional view corresponding to the XX line cross section of FIG. 2, showing the outline of the cross-sectional shape of one embodiment of the absorbent article of the present invention.

FIG. 12 is a view corresponding to FIG. 11, showing an outline of a cross-sectional shape in another embodiment of the absorbent article of the present invention.

FIG. 13 is a view corresponding to FIG. 11, showing an outline of a cross-sectional shape in still another embodiment of the absorbent article of the present invention.

[Explanation of symbols]

 1 Top Sheet 2 Back Sheet 3 Absorber 10 Absorbent Main Body Continuation 10A Absorbent Main Body 11 Abdominal Side 11a Side Edge 12 Crotch 12a Side Edge 13 Dorsal Side 13a Side Edge 15 Elastic Member 20 Absorbent Article ( Pants type disposable diaper) 21 Waist opening 22 Leg opening 22a Opening edge 23 Gather

Claims (6)

[Claims] 1. An absorbent main body having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between these sheets, wherein the absorbent main body is a ventral side portion. A crotch part and a dorsal part, and both side edges of the abdominal part and the dorsal part are joined and fixed to form a waist opening and a pair of leg openings and at least a pair of the legs. In an absorbent article in which gathers are formed in the opening peripheral portions of the openings, respectively, in the absorbent body, the inside of a part of one side edge portion of each of the ventral side portion and the back side portion and the crotch portion Along the inside of one side edge, cross the center of the crotch,
And at least the first and second elastic members are stretched and fixed so that the elastic members are arranged along the inner side of the other side edge portion, and the elastic members are mutually connected at the center of the crotch part. An absorbent article, which is arranged in parallel. 2. The absorbent article according to claim 1, wherein each of the first and second elastic members is composed of a plurality of members and is separated from each other at the center of the crotch portion. 3. The absorbent article according to claim 2, wherein at least a part of the first and second elastic members overlap each other at the center of the crotch part. 4. The back sheet is composed of a laminated body of at least two layers, the elastic member is stretched and fixed between layers of the laminated body, and the absorbent body is arranged on the laminated body. The absorbent article according to any one of claims 1 to 3. 5. The method for manufacturing an absorbent article according to claim 1, wherein the first and second elastic members are provided on a continuous liquid-impermeable backsheet having a predetermined width. Are swung in the width direction of the back sheet at predetermined intervals and stretched and fixed, and then a plurality of absorbers are arranged on the elastic member at regular intervals, and then a predetermined width is provided on the absorber. Of a continuous liquid-permeable top sheet, and a manufacturing process for manufacturing an absorbent main body continuous body in which the elastic members are stretched and fixed at least near the outer sides of both side edges of the crotch of each of the absorbent bodies And a cutting step of cutting the absorbent main body continuous body obtained in the above-described manufacturing step at the central portion between the adjacent absorbent bodies to obtain a plurality of absorbent main bodies, and a ventral side portion and a back of each absorbent main body. And a joining step of joining and fixing both side edges of the respective side portions. A method for manufacturing an absorbent article, comprising: 6. The method for manufacturing an absorbent article according to claim 1, wherein the first and the second layers are provided between layers of a back sheet composed of a laminate of at least two layers having a predetermined width and continuous with each other. After swinging and fixing the second elastic member by swinging in the width direction of the back sheet at predetermined intervals, a plurality of absorbers are arranged on the back sheet at regular intervals, and then the absorption is performed. An absorbent main body continuous body in which a continuous liquid-permeable top sheet having a predetermined width is arranged on the body, and the elastic members are stretched and fixed at least near the outer sides of both side edges of the crotch of each of the absorbent bodies. And a cutting step of cutting the absorbent main body continuous body obtained in the above manufacturing step at the central portion between adjacent absorbent bodies to obtain a plurality of absorbent main bodies, Connect both sides of the ventral and dorsal sides. A method of manufacturing an absorbent article, comprising a joining step of fixing and fixing.