JPH11155901A - Pants-type diapers - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conventional pants-type diaper, which has poor adhesion and wearing feeling, easily slips off, and has a low leakage prevention effect. SOLUTION: This pants-type diaper 11 has a waist opening 12 and a pair of leg openings 13 formed by joining side edges of an abdominal part 14F and a back part 14B of an exterior member 14 to each other. The exterior member 14 includes a first elastic member 18 that passes through the buttocks from the right edge of the back portion 14B and reaches the left edge of the back portion 14B along the left leg opening.
The second elastic member 1 which is symmetrical with the first elastic member 18
9 and the third from the right edge of the back portion 14B to the crotch portion 14C along the right leg opening 13R to the left edge of the back portion 14B along the left leg opening 13L.
And the first and second elastic members 1 are disposed.
8 and 19 are made of a plurality of stretchable elastic materials, and the interval between the stretchable elastic materials is set to be wider toward the side edge of the back side portion 14B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pants-type diaper having an opening around the waist corresponding to the waist and a pair of openings around the leg corresponding to the thighs of both legs.

[0002]

2. Description of the Related Art A detachable mold having an opening around a waist corresponding to a waist portion and a pair of opening around a leg corresponding to a thigh portion of both legs disclosed in Japanese Patent Application Laid-Open No. 5-247701. The diaper, that is, the pants-type diaper, is compared with an unfolded diaper in which the left and right side flap portions are closed and attached as disclosed in, for example, Japanese Patent Publication No. Hei 6-93901, and is removable by an adult wearer. In addition to the above, it is possible to easily and quickly perform the mounting particularly in the standing posture. Also, since the pants-type diaper can be worn by an adult wearer with a feeling of underwear rather than a diaper, it seems that the pants-type diaper can be received relatively without difficulty compared to the deployment type diaper.

[0003] Under these circumstances, pants-type diapers have been developed for adults requiring diapers and for infants at the time of weaning.
Demand is increasing in place of deployable diapers. In order to improve the fit of the opening and to improve the overall feeling of wearing, elastic materials tend to be frequently used.

For example, Japanese Patent Laid-Open Publication Nos. Hei 3-33201 and Hei 3-33201 disclose an elastic member disposed along a leg opening to form a leg gather for preventing leakage from the leg opening. 139349, 3-16
920 and JP-A-4-28363.

Japanese Patent Laid-Open Publication No. 2-34364 discloses a structure in which elastic side panels are provided on both side edges of the abdomen and back sides of the exterior member and elastic members are arranged along the opening around the waist of the exterior member. No. 6,086,045.

On the other hand, both side edges of the abdominal side of the exterior member and both side edges of the back side joined to the both side edges of the abdominal side are constituted by non-stretchable members, and the Japanese Patent Application Laid-Open No. 4-166150 discloses an arrangement in which an elastic member having
JP-A-4-161152, JP-A-4-28920
No. 1, JP-A-4-364845, JP-A-4-364
371147, JP-A-4-371148,
It is disclosed in Japanese Utility Model Laid-Open No. 6-421.

Further, Japanese Patent Application Laid-Open No. 5-76567 discloses an arrangement in which at least three elastic members are combined to continuously surround the opening around the leg to improve the effect of preventing leakage during wearing. ing.

[0008]

Problems to be Solved by the Invention
No. 9 and JP-A-4-28363, the pair of elastic members arranged along the leg opening are not in an intersecting state. A region where the elastic member does not exist is generated in the portion, and the effect of preventing leakage is not always sufficient, and there is also a problem in wearing feeling.

Japanese Unexamined Patent Publication No. Hei 3-33201 and Japanese Utility Model Laid-Open Publication No.
In the pants-type diaper described in Japanese Patent No. 16920, two sets of elastic members are arranged in the width direction of the absorbent main body located at the crotch part of the exterior member, so that the crotch part is surrounded by the two sets of elastic members. The formed portion is narrowed down by the gathers and protrudes, causing a problem in wearing feeling.

Further, in the pants-type diaper disclosed in Japanese Patent Application Laid-Open No. 2-4364, the cost tends to be high in both the raw material and the manufacturing process because the stretchable side panel is used. In addition, there is a problem that the detachability is not easy because a large stretching stress is generated in the side panel.

On the other hand, JP-A-4-166150, JP-A-4-161152, JP-A-4-289201
JP, JP-A-4-364845, JP-A-4-3
In the pants-type diaper disclosed in JP-A-71147, JP-A-4-371148, and JP-A-6-421, when the elastic member is arranged in parallel with the waist around the opening around the waist, the crotch of the wearer may be reduced. Adhesiveness of the absorbent main body to the part is low, causing a problem in wearability. In contrast,
When the elastic member is arranged diagonally, such a problem can be prevented, but since the elastic members forming the waist gather and the leg gather are independent from each other, the function of preventing the diaper from slipping down is sufficient. In addition, due to the absorption of excrement, a portion corresponding to the wearer's buttocks from the buttocks to the crotch portion (where no elastic members are arranged) swells, and the appearance becomes poor. There was a risk of leakage on the part side.

Furthermore, in the case of the pants-type diapers disclosed in Japanese Patent Application Laid-Open No. 5-76567, since the linear elastic members are used, the tightness of the entire diaper to the wearer is not sufficient, and the leg opening is not sufficient. There was a possibility that the tightening force of the part was too strong, giving the wearer discomfort.

An object of the present invention is to provide a pants-type diaper which has good adhesion, is excellent in a feeling of wearing, suppresses slip-off, and has a high leakage prevention effect and is easy to manufacture.

[0014]

According to the present invention, there is provided a pants-type diaper according to the present invention, comprising: an exterior member having an abdominal portion, a crotch portion, and a back side; A waist corresponding to a waist portion, comprising an absorbent body disposed over the side portion, wherein both side edges of the abdominal portion of the exterior member and both side edges of the back side portion are joined to each other. A pants-type diaper having a pair of leg openings corresponding to a thigh portion of both legs and a surrounding opening, wherein the exterior member passes through the buttocks from a right edge of the back side and a left side. A first elastic member having elasticity reaching the left edge of the abdominal portion along the opening around the leg, and a left edge of the back portion crossing the first elastic member at the buttocks; Has elasticity from the part to the right edge of the abdominal part along the opening around the leg on the right side A second elastic member, and the crotch portion extending from the right edge of the back side along the right leg opening so as to intersect the first and second elastic members at the crotch portion, respectively. A third elastic member having an elasticity extending across the left side edge of the back side along the leg surrounding opening on the left side is disposed, and a plurality of the first and second elastic members are provided. Each of the plurality of stretchable elastic materials constituting the first elastic member is set so as to have a wider interval toward the right edge of the back side portion, thereby forming the second elastic member. The plurality of stretchable elastic materials are characterized in that the interval is set wider toward the left edge of the back side.

According to the present invention, a first elastic member which passes from the right edge of the back portion to the buttocks, and extends along the left leg opening to the left edge of the abdominal portion; A third elastic member extending from the left edge of the back side to the right edge of the back side along the left leg opening so as to intersect with the elastic member at the crotch; Is formed around the leg gather. Similarly, a second elastic member that passes through the buttocks from the left side edge of the back side to the right side edge of the abdominal side along the opening around the right leg, and the second elastic member and the crotch Leg gather surrounding the right leg opening with a third elastic member extending from the right edge of the back side to the left edge of the back side along the right leg opening so as to intersect at the portion. Is formed.

The first and second elastic members cross each other at the center of the buttocks of the exterior member, and the third elastic member traverses the crotch portion, and the first and second elastic members. And cross each other at the left and right side edges of the crotch,
The absorbent body is pressed tightly over the buttocks and crotch of the wearer.

Furthermore, the interval between the plurality of elastic materials constituting the first and second elastic members is set to be wider toward the right and left side edges of the back side of the exterior member, so that the buttocks of the wearer can be obtained. It adheres to the part from the waist to the side part of the waist without sticking.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a pants-type diaper according to the present invention, it is also effective to form a waist gather by arranging an elastic member having elasticity along an opening around the waist on an exterior member.

Further, an inner layer sheet for holding the first, second and third elastic members between the outer member and the outer member may be further provided, and the absorbent body may be joined to the inner layer sheet.

Further, the absorbent main body includes a liquid-permeable top sheet, a back sheet positioned between the top sheet and the exterior member, and an absorber disposed between the top sheet and the back sheet. It is desirable to have

On the other hand, the absorber of the absorbent main body may not be present at the intersection of the first and second elastic members and the third elastic member, whereby the close contact of the absorber at the crotch portion is achieved. It is also possible to maintain the nature.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the pants-type diaper according to the present invention will be described in detail with reference to FIGS. 1 to 7. However, the present invention is not limited to such embodiments, and may be further combined. Of course, it can be diverted to a pants-type diaper having another known structure.

FIGS. 1 and 2 show the appearance of the underside of the pants-type diaper and the back side of the pants-type diaper in this embodiment, and FIG. It is shown in FIG. In other words, the pants-type diaper 11 in the present embodiment has a waist opening 12 corresponding to the waist portion, a pair of left and right leg openings 13L, 13R corresponding to the thighs of both legs, and these openings 12, 13L. ,
13R, a waist elastic member 16 for forming a waist gather 15 by squeezing the waist opening 12, and a leg opening 13
Exterior members between the first elastic member 18, the second elastic member 19, the third elastic member 20 for forming the leg gather 17 by squeezing the L and 13R, and the left and right leg opening portions 13L and 13R. Absorbent body 21 extending from 14 crotch portion 14C to abdomen 14F and back 14B.

Further, a pair of right and left closing portions 22L communicating with the waist opening 12 and the leg opening 13L, 13R are provided on both left and right side edges of the abdomen 14F and the back 14B of the exterior member 14. , 22R are formed so as to be peelable, and by peeling off the closing portions 22L, 22R, they can be developed as shown in FIG.

That is, from the unfolded state shown in FIG. 3, the front and rear closing portions 22L and 22R of the exterior member 14 are overlapped, and these contact portions are joined by a hot melt bonding method, a pressure melting bonding method, or an ultrasonic melting method. The pants-type diaper 11 shown in FIG. 1 and FIG. 2 can be obtained by joining by an adhesive method or the like alone or in an appropriate combination.

The absorbent main body 21 in this embodiment comprises an absorber 23, a back sheet 24 provided between the absorber 23 and the exterior member 14, and a liquid-permeable top sheet 25 covering the absorber 23. The back sheet 24 and the top sheet 25 are overlapped in the same shape as the exterior member 14.

The back sheet 24 of the absorbent main body 21 and the exterior member 14 are integrally joined to each other by a plurality of linearly extending adhesive portions (not shown) which are continuous along the longitudinal direction. ing. In the present embodiment, the back sheet 24 and the top sheet 25 are
Of the top sheet 25, but it is also possible to arrange the top sheet 25 so as to cover only the absorber 23, for example.

The absorbent body 23 in this embodiment is made of a known absorbent material that is commonly used for conventional diapers and other absorbent articles. That is, a superabsorbent polymer material (hereinafter, referred to as SAP) is uniformly mixed in a single-layer or multi-layer mat made of absorbent fibers such as cotton-like pulp and rayon or dispersed in layers between each mat. And wrap it with a hydrophilic sheet such as tissue, absorbent paper, hydrophilic non-woven fabric or cotton-like pulp.
〜60% by weight of a heat-fusible substance mixed and thermocompression bonded, or only SAP wrapped with a hydrophilic sheet is used. The absorber 23 may be formed to have a uniform density and smoothness, or may have an unevenness formed on the surface by embossing to change the density. In this embodiment, the absorber 2
Although 3 is formed in an hourglass shape in which the width of both front and rear ends is widened, it may be formed in a rectangular shape having a constant width. However, the hourglass shape can ensure better fit when worn.

The cotton-like pulp has a fiber length of 5 mm or less obtained by defibrating a chemical pulp sheet or a mechanical pulp sheet with a crusher. The raw material for the pulp is not limited to conifers, but may be hardwood, straw, bamboo, kenaf or used paper pulp. The amount of the pulp used varies depending on whether it is used alone, a plurality of layers are used, or another absorbent is used in combination, but generally, 50 to 400 g per square meter.
Set to about.

Examples of the SAP include starch-based, cellulose-based, and synthetic polymer-based SAPs. That is, a starch-acrylic acid (salt) graft copolymer, a saponified product of starch-ethyl acrylate graft copolymer, a saponified product of starch-methyl methacrylate graft copolymer, a saponified product of starch-acrylonitrile graft copolymer , Starch-acrylamide graft copolymer saponified product, starch-acrylonitrile-2-acrylamide-2-methylpropanesulfonic acid graft copolymer saponified product, acrylic acid (salt) polymer, polyethylene oxide cross-linked with acrylic acid , Sodium carboxymethyl cellulose, cross-linked product of polyvinyl alcohol-maleic anhydride reactant, etc. In particular, a sodium polyacrylate-based material that absorbs liquid such as urine that is 20 times or more its own weight is preferable from the viewpoint of absorption performance. The amount of the SAP used is 10 to 500 parts by weight, preferably 15 to 300 parts by weight, based on 100 parts by weight of the dried floc pulp. And S
When the AP absorbs the liquid and swells, the mutual interference of the particles is minimized, and the liquid does not continuously form a liquid permeation barrier and penetrates and absorbs the liquid in three dimensions. Is desirable.

Note that a diffusion layer may be joined to the surface of the absorber 23. By arranging this diffusion layer, it is possible to prevent leakage without reducing the absorption speed of urine or the like, regardless of the posture of the wearer.
As this diffusion layer, polypropylene or polyethylene,
Polyester, rayon, pulp, and hydrophilic and liquid-permeable non-woven fabric, woven fabric,
It can be made of porous plastic, floc pulp, etc.

The exterior member 14 and the back sheet 24 only need to have at least one of them impermeable to liquid, such as a liquid impermeable film such as polyethylene or a hydrophilic or hydrophobic nonwoven fabric. A woven fabric or the like can be used alone, or a liquid-impermeable film bonded to a nonwoven fabric or a woven fabric can be used as appropriate.

Further, as the top sheet 25,
A hydrophilic or hydrophobic nonwoven fabric, woven fabric, or porous plastic film formed of a single fiber such as polypropylene, polyethylene, polyester, or nylon, or a composite fiber composed of two or more components such as polyester, polypropylene, polyethylene, or nylon. Etc. can be adopted. In particular, low-melting polyester / polyester, polyester / polyethylene or polypropylene / polyethylene composite fibers are preferred from the viewpoint of strength. The topsheet 25 may have the same dimensions and shape as the backsheet 24, or may be larger.
The top sheet 25 does not need to be formed of a single sheet, but may be formed of a center top sheet that covers the upper surface of the absorber 23 and a pair of side top sheets that are joined to both sides in the width direction. Is possible, in this case
The center top sheet and the side top sheet may be formed of different materials.

First to third elastic members 18 to 20 are provided between the exterior member 14 and the back sheet 24 of the absorbent main body 21.
Are held in an extended state. The first elastic member 18
Closing portion 22R located at right side edge of back side portion 14B
Through the buttocks from above, along the left leg opening 13L to reach the closing portion 22L located on the left edge of the abdominal portion 14F. Also, the second elastic member 19
The closing portion 2 located at the left edge of the back portion 14B so as to intersect the first elastic member 18 at the center of the buttocks.
A closing portion 22 located at the right edge of the abdominal portion 14F along the right leg opening 13R from the 2L through the buttocks.
It is arranged to reach R. On the other hand, the third elastic member 20 extends from the closing portion 22R located on the right edge of the back side portion 14B so as to intersect the first and second elastic members 18 and 19 at the crotch portion 14C, respectively. Side 14B
The closing portion 22 traverses the crotch portion 14C along the right leg opening 13R and is located at the left edge of the back portion 14B along the left leg opening 13L of the back portion 14B.
L.

The first and second elastic members 18, 1
Reference numeral 9 denotes a plurality of (five in the illustrated example) stretchable elastic materials, and the plurality of stretchable elastic materials constituting the first elastic member 18 are spaced more toward the right edge of the back side portion 14B. Are set to be wider, and the interval between the plurality of stretchable elastic materials constituting the second elastic member 19 is set to be wider toward the left edge of the back side portion 14B. In addition, the number of the elastic material constituting the third elastic member 20 may be one, but may be plural, and in the case of plural, the elastic material may be arranged evenly, but along the leg surrounding openings 13L, 13R. The interval may be set to be widened as a whole.

The number of the elastic members constituting the third elastic member 20 that crosses the crotch portion 14C and the first and second elastic members that intersect the third elastic member 20 at the lower abdomen of the abdomen 14F. The number of the elastic materials constituting the members 18 and 19 may be different. Also, elastic members 18 to 20 arranged in the left and right leg surrounding openings 13L, 13R.
It is not necessary to set the adjacent intervals of the stretchable elastic materials constituting each other equally, for example, the closer the first and second elastic members 18 and 19 are to the side closer to the waist opening 12, the closer the adjacent intervals of the stretchable elastic material are. It may be set to be dense, and the third elastic member 20 is connected to the leg opening 13L,
It may be set so that the distance between adjacent elastic elastic materials becomes smaller on the side closer to 13R.

As described above, the first and second elastic members 1
8 and 19 are crossed at the back side portion 14B of the exterior member 14, the third elastic member traverses the crotch portion 14C, and the crotch portion is moved with respect to the first and second elastic members 18 and 19. Since the left and right side edges of the portion 14C cross each other, the absorbent main body 21 is pressed in tight contact over the buttocks of the wearer and the crotch portion 14C. Moreover, the elastic member 1
Since the interval between the plurality of elastic materials constituting each of the parts 8 and 19 is set to be wider toward the right and left side edges of the back side part 14B of the exterior member 14, the space extends between the buttocks and the side parts of the waist of the wearer. It can be in a close contact state without sticking, and a good wearing feeling can be obtained.

It should be noted that a stretchable elastic member may be arranged only on the abdomen 14F, or on the abdomen 14F and the back and abdomen 14B in parallel with the waist opening 12.

The intersection of the first elastic member 18 and the third elastic member 20 and the intersection of the second elastic member 19 and the third elastic member 20 do not overlap with the absorber 23. The left and right leg openings 13L, 1
It is set close to 3R. Further, it is desirable that these intersection positions are set closer to the back part 14B of the crotch part 14C.

As described above, the first and second elastic members 1
Since the absorbers 23 of the absorbent main body 21 do not exist at the intersections of the 8, 19 and the third elastic members 20, respectively,
The adhesion of the absorber 23 to the wearer's crotch can be maintained. Further, by giving continuity to the first to third elastic members 18 to 20 in the closing portions 22L and 22R, a good wearing feeling can be obtained.

The waist elastic members 16 are arranged at both ends in the longitudinal direction of the exterior member 14 in an extended state.
In the present embodiment, both ends in the longitudinal direction of the exterior member 14 are folded back so as to sandwich the elastic member 16 around the waist,
An opening 12 around the waist is formed.

The elastic members 16, 18 to 20 described above are made of natural rubber, synthetic rubber, urethane or the like in the form of a thread, string, net, or flat, depending on the arrangement position, and are made of starch or CMC (carboxy). Exterior member 1 with a water-soluble glue such as methylcellulose) or a highly fluid adhesive.
4, but may be welded by hot melt or ultrasonic waves.

As shown in FIG. 5, which conceptually shows a manufacturing process of such a pants-type diaper 11, a continuous body 1 of an exterior member is provided.
4W to the continuum 16W of the elastic member around the waist and the first
To 18 W to 20 W of the third elastic member are arranged in an extended state, respectively. First and second meandering states respectively
The continuities 18W and 19W of the elastic members have large arc portions 26 having a large radius of curvature and small arc portions 27 having a small radius of curvature alternately.
The phases of the continuum members 18W and 19W of the elastic members are shifted by a half pitch. Further, the continuum 20W of the third elastic member alternately has a small arc portion 28 having a small radius of curvature corresponding to the small arc portion 27 and a large arc portion 29 having a large radius of curvature.

Then, the continuum 21 of the absorbent main body is placed thereon.
W is superimposed and integrated with the continuum 14W of the exterior member, but the continuum 21W of the absorbent main body has the absorber 23 placed at a predetermined interval on the continuum 24W of the backsheet, and the topsheet is further placed thereon. Are obtained by stacking and integrating the continuum 25W.

Further, both side edges of the continuum 14W of the exterior member 14 are folded back, and the portions surrounded by the small arc portions 27, 28 of the continuum 18W to 20W of the first to third elastic members are made substantially elliptical. The hollow portion 30 is formed by hollowing.

Then, the continuum 14W of the exterior member is folded in half at the center along the longitudinal direction so that the absorbent main body 21 is on the inside, and a pair of the continuation members 14W located on both side edges of the continuum 14W of the exterior member is formed. Continuum of elastic members around waist 1
6W are overlapped with each other, and an adhesive having a width twice as large as the closing portions 22L, 22R so as to cross the central portion of the large arc portion 26 and the small arc portions 27, 28 in the width direction of the continuous body 14W of the exterior member. After fixing parts are formed at predetermined intervals to obtain a continuous body of pants-type diapers, the central part of the adhesive fixing part is cut to obtain individual pants-type diapers 11.

In the above-described embodiment, the absorbent main body 21 is formed of the absorber 23, the back sheet 24 and the top sheet 25, but the back sheet 24 is omitted and the absorber 23 and the top sheet 25 are attached to the exterior member 14. You may superimpose directly. FIG. 6 shows a schematic structure of another embodiment of the pants-type diaper according to the present invention. Members having the same functions as those of the previous embodiment are denoted by the same reference numerals, and overlapping description is omitted. It shall be.

That is, the absorber 23 and the top sheet 25 are directly overlaid on the exterior member 14, and the elastic members 18 to 20 are held between the absorber 23 and the top sheet 25 and the exterior member 14. It is in a state. As described above, the back sheet 24 in the previous embodiment is used.
By omitting, it is possible to simplify the manufacturing process and reduce the manufacturing cost.

Further, an inner layer sheet may be superposed on the outer member 14 and an elastic member may be interposed between the inner sheet and the outer member 14. FIG. 7 shows a schematic structure of another embodiment of the pants-type diaper according to the present invention. Members having the same functions as those of the previous embodiment are denoted by the same reference numerals, and overlapping description is omitted. It shall be.

That is, the elastic member 16 (see FIG. 1), 18 to 20 is provided between the exterior member 14 and the exterior member 14.
Are superimposed on each other, and the absorbent main body 21 is joined onto the inner layer sheet 31. In the absorbent main body 21 according to the present embodiment, only the center portion of the back sheet 24 in the width direction is overlapped with the inner layer sheet 31, and the back sheet 24 and the top sheet 25
Are formed so as to protrude from both side edges in the width direction of the absorber 23, and the elastic member 32 is sandwiched in this portion to form a three-dimensional gather 33. The elastic force of the member 32 causes the member 32 to contract and contract in the longitudinal direction so that the member 32 comes into close contact with the wearer's skin, and in particular, care is taken to prevent leakage from the crotch portion 14C.

The exterior member 14 and the back sheet 24
The inner layer sheet 31 may be a liquid-impermeable film or a hydrophilic or hydrophobic nonwoven fabric, woven fabric, or the like, as long as at least one of them is liquid-impermeable.

When the pants-type diaper 11 shown in FIG. 7 is manufactured, the manufacturing process of the absorbent body continuous body 21W (see FIG. 5) in the above embodiment may be changed as follows, for example. . That is, such that the longitudinal direction of the absorber 23 matches the longitudinal direction of the continuous body of the back sheet 24,
Absorbers 23 are arranged at predetermined intervals in a central portion along a longitudinal direction of a continuous body of back sheet 24 having a width dimension larger than the width dimension of absorber 23, and both side edges of the continuous body of back sheet 24 The continuum of the elastic member 32 is arranged in the portion in an extended state. Then, a continuum of the top sheet 25 having a width larger than the width of the absorber 23 is overlapped on the continuum of the back sheet 24 and the absorber 23,
These are integrally joined to obtain an absorbent body continuum 21W.

After the continuous body 21W of the absorbent main body is cut at predetermined intervals to obtain individual absorbent main bodies 21, the longitudinal direction of the absorbent main body 21 matches the width direction of the continuous body of the exterior member 14. As such, these absorbent bodies 21 may be arranged at predetermined intervals on the continuous body of the inner layer sheet 31.

[0054]

According to the pants-type diaper of the present invention, the first
And the second elastic member is disposed in a crossed state on the back side of the non-stretchable exterior member, and the third elastic member that crosses the crotch portion includes the first and second elastic members and the left and right portions of the crotch portion. Because they intersect at both side edges, the absorbent body is pressed against the wearer's back and crotch in close contact,
As a result of preventing the pants-type diaper from slipping off on the back side, a pants-type diaper with excellent wearing feeling can be manufactured at low cost.

Further, since the interval between the plurality of elastic materials constituting each elastic member is set wider on both side edges of the back side of the exterior member, the interval between the elastic member and the wearer's buttocks and hips is reduced. Are tightly adhered without looseness, and the wearability can be further improved.

Further, the first and second elastic members and the third
When the absorber of the absorbent main body is made not to exist at the intersection with the elastic member, the adhesion of the absorber at the crotch can be further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an abdominal appearance of an embodiment of a pants-type diaper according to the present invention.

FIG. 2 is a perspective view showing a back side appearance of the pants-type diaper in the embodiment shown in FIG.

FIG. 3 is a perspective view showing an appearance of a state in which a closed portion of the pants-type diaper shown in FIGS. 1 and 2 is peeled and developed.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;

FIG. 5 is a conceptual working diagram showing a part of a manufacturing process of the pants-type diaper shown in FIGS.

FIG. 6 is a sectional view corresponding to FIG. 4 of another embodiment of the pants-type diaper according to the present invention.

FIG. 7 is a sectional view corresponding to FIG. 4 of another embodiment of the pants-type diaper according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Pants type diaper 12 Waist circumference opening 13L, 13R Leg circumference opening 14 Exterior member 14F Abdominal part 14B Back side 14C Crotch part 14W Continuous body of exterior member 15 Waist gather 16 Waist elastic member 16W Waist elastic member Continuum 17 Leg gather 18 First elastic member 18W Continuum of first elastic member 19 Second elastic member 19W Continuum of second elastic member 20 Third elastic member 20W Continuum of third elastic member DESCRIPTION OF SYMBOLS 21 Absorbent main body 21W Continuum of absorbent main body 22L, 22R Closed part 23 Absorbent body 24 Backsheet 24W Continuum of backsheet 25 Topsheet 25W Continuum of topsheet 26 Large arc 27, 28 Small arc 29 Large Arc part 30 Hollow part 31 Inner layer sheet 32 Elastic member 33 Solid gather

Claims (5)

[Claims] 1. An exterior member having an abdominal portion, a crotch portion, and a back side portion, and an absorbent main body disposed from the abdomen portion to the crotch portion of the exterior member and extending to the back side portion. With
A waist opening corresponding to a waist portion and a pair of legs corresponding to a thigh portion of both legs are formed by joining both side edges of an abdominal portion of the exterior member and both side edges of the back side portion to each other. A pants-type diaper having an opening formed therein, wherein the exterior member passes through the buttocks from a right edge of the back side, and a left edge of the abdomen along the leg opening on the left side. A first elastic member having elasticity to reach the first
A second elastic member having elasticity from the left edge of the back side to the right edge of the abdomen along the right leg opening so as to intersect the elastic member with the buttocks; Traversing the crotch portion along the opening around the right leg from the right edge of the back side so as to intersect with the first and second elastic members at the crotch portion, respectively. A third elastic member having elasticity that extends to the left edge of the back side along the leg surrounding opening is disposed, and the first and second elastic members are made of a plurality of elastic elastic materials. Each of the plurality of stretchable elastic materials constituting the first elastic member is set to have a wider interval toward the right edge of the back side, and the plurality of stretchable elastic materials constituting the second elastic member are arranged. The interval between the elastic materials is set wider at the left edge of the back side. A pants-type diaper characterized by the fact that: 2. The pants-type diaper according to claim 1, wherein an elastic member having elasticity is arranged on the exterior member along the opening around the waist. 3. The apparatus according to claim 1, further comprising: an inner layer sheet for holding the first, second and third elastic members between the outer member and the outer layer member, wherein the absorbent body is joined to the inner layer sheet. The pants-type diaper according to claim 1 or 2, wherein the pants-type diaper is made. 4. The absorbent body includes a liquid-permeable topsheet, a backsheet positioned between the topsheet and the exterior member, and an absorbent disposed between the topsheet and the backsheet. The pants-type diaper according to any one of claims 1 to 3, further comprising a body. 5. The absorbent body of the absorbent main body does not exist at the intersection of the first and second elastic members and the third elastic member. The pants-type diaper described in.