JPWO2015108091A1 - Disposable underwear - Google Patents

Abstract

Disclosed is a disposable undergarment that fits well to the body and can suppress slipping off. The pants-type diaper (1) includes a ventral member (11), a dorsal member (12), a crotch member (5) connecting both members, and the left ends of the ventral member (11) and the dorsal member (12). The portions (15a, 15b) and the right end portions (15c, 15d) are joined together, so that they are surrounded by the abdominal member (11), the back member (12), and the crotch member (5). The left and right leg openings (13, 14) and the waist portions (in the left and right directions of the ventral member (11) and the dorsal member (12)) along the upper edge of each member (11, 12). 4, 4 a, 4 b) and waist elastic bodies (21, 21 a, 21 b) arranged in regions above the left and right leg openings (13, 14), and the waist elastic bodies (21, 21 a , 21b) is characterized in that the tightening force is gradually weakened from the waist (4, 4a, 4b) side toward the left and right leg openings (13, 14).

Description

  The present invention relates to disposable underwear.

Conventionally, various proposals have been made on disposable underwear such as disposable pants-type diapers and pad holders for holding pads that absorb urine and the like (for example, Patent Document 1).
The disposable wearing article of Patent Document 1 is provided with an elastic member that draws a convex curve toward the upper edge, and an elastic member that draws a convex curve toward the lower edge between the left and right ends of the abdominal nonwoven fabric, Techniques have been proposed for suppressing tight tightening of the bulging tummy top.
However, such disposable wears may not fit well depending on the wearer's body shape and may fall off.

JP-A-8-294510

  The subject of this invention is providing the disposable underwear which fits a body favorably and can suppress slipping off.

In order to solve the above-mentioned problems, the disposable underwear (1) of the present invention includes a ventral member (11), a back member (12), a crotch member (5) connecting the two members, and the ventral member. (11) and the left end portions (15a, 15b) and the right end portions (15c, 15d) of the back side member (12) are joined to each other, whereby the abdominal side member (11) and the back side member (12 ) And the crotch member (5) and the left and right leg openings (13, 14), and the ventral member (11) and the dorsal member (12) extend in the left-right direction. A waist elastic body (21a, 21b) disposed in a region above the left and right leg openings (13, 14) under the waist (4a, 4b) along the upper edge of each of the members; And at least part of the waist elastic body (21a, 21b) is on the waist (4a, 4b) side. Wherein the gradual tightening force becomes weak toward the leg openings (13, 14) side of the right and left.
In one aspect of the present invention, the waist elastic body (21a, 21b) extends in the left-right direction of the abdominal member (11) and the dorsal member (12), and the waist (4a, 4b) is composed of a plurality of elastic members arranged in the region above the left and right leg openings (13, 14) and arranged on the left and right leg openings (13, 14) side. The elastic member has a lower tension than the elastic member disposed on the waist (4a, 4b) side than the elastic member.
In another aspect of the present invention, the waist elastic body (21a, 21b) is at least part of a region above the left and right leg openings (13, 14) under the waist (4a, 4b). The non-elastic part (P) does not have a tightening force, and the non-elastic part (P) is directed from the waist (4a, 4b) side toward the left and right leg openings (13, 14). It includes a portion in which the lateral width gradually increases.
In the said aspect of this invention, it is provided with the absorption member (30) arrange | positioned from the said belly side member (11) through the said crotch member (5) to the said back side member (12), and said inelastic part (P) Is formed inside both end edges in the width direction (X direction) of the absorbent member (30) to be arranged, and the left and right openings from the waist (4a, 4b) side of the inelastic portion (P). At least a part of the portion where the lateral width gradually increases toward the (13, 14) side is formed in a region where the waist elastic bodies (21a, 21b) and the absorbing member (30) overlap, A part of the elastic body (21a, 21b) is formed on the waist (4a, 4b) side in the region where the waist elastic body (21a, 21b) and the absorbing member (30) overlap.
In another aspect of the present invention, the waist elastic body (21a) of the abdominal member (11) has a tightening force compared to that of the waist elastic body (21b) of the back side member (12). It is characterized by being strong.
As mentioned above, in order to make an understanding easy, although the code | symbol corresponding to embodiment of this invention was attached | subjected and demonstrated, it is not limited to this. Note that the configuration described with reference numerals may be improved as appropriate, or at least a part thereof may be replaced with another configuration.

  The disposable underwear of this invention fits a body favorably and can suppress slipping off.

It is a perspective view of the underpants type diaper of a 1st embodiment. It is an expanded view of the underpants type diaper of 1st Embodiment. It is sectional drawing of the absorption member provided in the underpants type diaper of 1st Embodiment. It is an expanded view of the pad holder of 2nd Embodiment. It is an expanded view of the underpants type diaper of a deformation | transformation form.

(First embodiment)
Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, a pants-type diaper will be described as an example of disposable underwear.
FIG. 1 is a perspective view of a pants-type diaper according to the present embodiment.
FIG. 2 is a development view of the pants-type diaper of the present embodiment.
In FIG. 1, the left-right direction of the pant-type diaper is the X direction (+ X is the left side), the front-rear direction is the Y direction (+ Y is the front side), and the vertical direction is the Z direction (+ Z is the upper side). In FIG. 2, the width direction (left-right direction) of the developed pant-type diaper is the X direction (+ X is the left side), and the up-down direction orthogonal to the X direction is the Z direction. Here, in FIG. 2, the upward direction of the ventral member indicates the Z1 direction, and the upward direction of the back side member indicates the Z2 direction.
In addition, in FIG. 1, each gather provided in a pants-type diaper is abbreviate | omitted. In FIG. 2, the elastic members forming the gathers of the pant diaper are all in an extended state.

  In the following description, the up-down direction, the left-right direction, and the front-rear direction indicate directions in a normal use state of a pant-type diaper (a state in which a standing wearer wears a pant-type diaper). That is, the upper side of the pants-type diaper means the waist side, the lower side is the crotch side, the left side is the left leg side, the right side is the right leg side, the front side is the abdomen side, and the rear side is the buttocks side ( The dorsal side).

As shown in FIGS. 1 and 2, the pant-type diaper 1 is a disposable underwear including an absorbent member that absorbs a wearer's urine, blood, or the like (liquid material). The pants-type diaper 1 includes an outer sheet 10a positioned on the outer side of the diaper, an outer sheet 10 on which an inner sheet 10b positioned on the inner side of the diaper is stacked, and an absorption disposed on the inner surface (inner sheet 10b) side of the outer sheet 10. It is comprised from the member 30. FIG.
The outer sheet 10a and the inner sheet 10b constituting the outer sheet 10 include non-woven fabrics or films made of chemical fibers such as polyethylene, polypropylene, polyester, nylon and rayon, natural fibers such as cotton and cellulose, and polyethylene and polypropylene. A mixed nonwoven fabric, a film, or the like obtained by appropriately combining the above materials such as a mixed nonwoven fabric is used. Moreover, you may use a nonwoven fabric, a film, tissue, an elastic material, or these laminated bodies, or connecting them suitably as one sheet.
As shown in FIGS. 1 and 2, the exterior sheet 10 includes an abdominal member 11, a dorsal member 12, a crotch (crotch member) 5, a left leg opening 13, a right leg opening 14, and a joint 15. It is configured.

The ventral member 11 is a portion that covers the abdomen of the wearer's front. The dorsal member 12 is a part that covers the buttocks around the back of the wearer. The abdominal member 11 and the dorsal member 12 are connected together via a crotch portion (crotch member) 5.
As shown in FIGS. 1 and 2, the abdominal member 11 and the dorsal member 12 extend in the width direction (left and right direction, X direction) of the respective upper end edges of the waist portions 4 (4a, 4b). The waist elastic bodies 20 (20a, 20b) are provided respectively. Further, under these waist elastic bodies 20 (20a, 20b), waist elastic bodies 21 (21a, 21b) are provided in regions above the left leg opening 13 and the right leg opening 14, respectively. ing.

The left leg opening 13 is provided at the left lower end in the width direction of the abdominal member 11 and the back member 12 on the left side of the crotch portion 5.
The right leg opening 14 is provided on the right lower end in the width direction of the abdominal member 11 and the back member 12 on the right side of the crotch portion 5.
The left leg opening 13 and the right leg opening 14 are joined to the left end 15a, 15b and the right end 15c, 15d of the ventral member 11 and the back member 12 as the joint 15 in FIG. As shown, it is a notch in which opening holes 2 and 3 for inserting a wearer's left leg and right leg are formed. The left leg opening 13 and the right leg opening 14 are formed by being surrounded by the ventral member 11, the back member 12, and the crotch portion 5.
As shown in FIG. 2, the left leg opening 13 and the right leg opening 14 are provided with leg-around elastic bodies 22 (22a, 22b, 22c, 22d) along the respective opening edges.

In the present embodiment, the left leg opening 13 and the right leg opening 14 are formed symmetrically with respect to the center line C1 in the X direction, and are formed asymmetric with respect to the center line C2 in the Z direction. ing.
The joining portion 15 is a portion that joins the left end portion 15a of the ventral member 11 and the left end portion 15b of the dorsal member 12, and a portion that joins the right end portion 15c of the ventral member 11 and the right end portion 15d of the dorsal member 12. It is formed by heat sealing, ultrasonic sealing, or adhesive (for example, hot melt adhesive).

The waist elastic body 20 (20a, 20b) is provided to hold the pants-type diaper 1 against the wearer's waist. The waist elastic body 20 (20a, 20b) is composed of a plurality of elastic members extending along the upper edge of each waist (4a, 4b) of the ventral member 11 and the back member 12. .
The waist elastic body 21 (21a, 21b) is provided to hold the pant-type diaper 1 with respect to the wearer's waist. The waist elastic body 21 (21a, 21b) extends in the width direction (left-right direction, X direction) of the abdominal member 11 and the back member 12 of the exterior sheet 10, and the abdominal member 11 and the back member 12 It is comprised from the some elastic member arrange | positioned in the area | region on the left leg opening part 13 and the right leg opening part 14 under each waist | lumbar part 4 (4a, 4b).
The leg-around elastic body 22 (22a, 22b, 22c, 22d) is provided to hold the pant-type diaper 1 with respect to the base portions of the left and right legs of the wearer. The leg elastic body 22 (22a, 22b, 22c, 22d) includes a plurality of elastic members arranged along the opening edges of the left leg opening 13 and the right leg opening 14.

The waist elastic body 20, the waist elastic body 21, and the leg elastic body 22 are respectively disposed between the outer sheet 10a and the inner sheet 10b constituting the exterior sheet 10, and each of the outer sheets is stretched. 10a and the inner sheet 10b. Thereby, as for the underpants type diaper 1, gathers will be formed in each of the waist part 4 of the exterior sheet 10, the waist circumference, and the edge part of the left and right leg opening parts 13 and 14.
The elastic members constituting the waist elastic body 20, the waist elastic body 21, and the leg elastic body 22 are each formed of a stretchable thread-like material such as natural rubber, polyurethane resin, and stretchable hot melt. . Each elastic member can be not only a thread-like member but also a belt-like member.

FIG. 3 is a cross-sectional view of the absorbent member provided in the pant diaper of the present embodiment. 3 is a cross-sectional view of the absorbent member taken along the line AA ′ of FIG.
As shown in FIG. 2, the absorbing member 30 is arranged on the inner side of the exterior sheet 10 from the waist 4a side of the abdominal member 11 to the waist 4b side of the back member 12 through the crotch portion 5 and urine, blood, etc. It is a pad that absorbs a liquid material and is formed in a substantially rectangular shape.
As shown in FIG. 3, the absorbent member 30 includes an absorbent body 31, a top sheet 32, a back sheet 33, a side elastic body 34, a gather sheet 35, a crotch elastic body 36, and the like.
The absorber 31 is a member that absorbs a liquid material such as urine and blood, and is a combination of absorbent materials such as absorbent paper, cotton-like pulp, and a polymer absorbent. The absorber 31 is disposed between the top sheet 32 and the back sheet 33 and absorbs and holds the liquid material that has permeated from the top sheet 32.

The surface sheet 32 is a sheet member that is disposed on the inner side of the pants-type diaper 1 and is on the side that the wearer's skin touches and covers the surface side of the absorbent body 31. The top sheet 32 is formed of, for example, a liquid permeable material such as a nonwoven fabric, and allows the liquid material generated in the pant-type diaper 1 to permeate the absorbent body 31.
The back sheet 33 is a sheet member that covers the back side of the absorber 31. The back sheet 33 is made of, for example, a liquid-impermeable material such as a polyethylene film, and the liquid material absorbed by the absorber 31 or the liquid material that has passed through the top sheet 32 leaks to the exterior sheet 10 side. To prevent it.

The gather sheet 35 is a sheet member that forms a three-dimensional gather in the absorbing member 30. As shown in FIG. 3, two gather sheets 35 are provided, and each of them is joined to the left end portion and the right end portion of the outer surface (opposite side to the absorber 31) of the back sheet 33. The gather sheet 35 is made of, for example, a non-woven fabric or a material obtained by bonding a polyethylene film or the like to the non-woven fabric, and prevents the liquid material that could not be absorbed by the absorber 31 from leaking out from the crotch portion 5.
As shown in FIGS. 1 and 3, the gather sheet 35 has a side elastic body 34 disposed along the absorbent body 31 on the inner side where the end edges of the leg openings 13 and 14 are folded. Has been.

The side elastic body 34 is composed of a plurality of elastic members, and is joined inside the folded portion of the gather sheet 35 in an extended state. Thereby, a three-dimensional gather will be formed in the position corresponding to the crotch part 5 of the underpants type diaper 1, and it prevents that excrement and a liquid body leak from the crotch part 5 of the underpants type diaper 1. Can do.
Further, the gather sheet 35 is provided with a crotch elastic body 36 at a joint portion with the back sheet 33.
The crotch elastic body 36 is an elastic member that is disposed along the left and right edges of the absorber 31. Even if the excrement is absorbed by the pant-type diaper 1 and the weight of the absorbent body increases, the crotch elastic body 36 is pressed against the crotch between the left and right ends of the absorbent member 30 by the tension of the elastic body. It is possible to prevent a gap from occurring between them. Further, the crotch elastic body 36 is positioned along the wearer's groin, so that the absorbent member 30 abuts against the wearer's crotch without being bent or slackened, and has an extremely good fit and prevention. Leakage can be realized.
In the present embodiment, the crotch elastic body 36 is linearly disposed on each of the left and right ends of the absorbent member 30 in the width direction. However, a plurality of crotch elastic bodies 36 may be disposed.

  The elastic members constituting the side elastic body 34 and the crotch elastic body 36 are made of a stretchable thread-like material such as natural rubber, polyurethane resin, stretchable hot melt, etc., like the waist elastic body 20 described above. Is formed. The elastic member can be not only a thread-like member but also a belt-like or sheet-like member. Further, the entire side elastic body may be formed of a material such as a stretchable sheet. In this case, it is necessary to form the elastic body so that the stretching force acts in the extending direction of the illustrated elastic body.

Next, the detailed configuration of the outer periphery of the exterior sheet 10 and the waist elastic body 21 (21a, 21b) provided around the waist will be described.
As described above, the waistline elastic body 21 (21a, 21b) extends in the width direction (left-right direction, X direction) of the abdomen side member 11 and the back side member 12 of the exterior sheet 10, and the pants-type diaper 1 It is composed of a plurality of thread-like elastic members arranged from the waist 4 (4a, 4b) to the left leg opening 13 and the right leg opening 14. Here, the tightening force of the waistline elastic body 21 (21a, 21b) gradually weakens from the waist 4 (4a, 4b) side of the pant-type diaper 1 toward the left and right leg openings 13, 14 side. It is formed as follows.

In the present embodiment, among the elastic members constituting the waist elastic body 21 (21a, 21b), the elastic members disposed on the left and right leg openings 13, 14 side (lower end side) are lower than the elastic members. 4 (4a, 4b) is provided so that tension (contraction force) is weaker than that of the elastic member arranged on the side (upper end side).
Specifically, the waist elastic body 21 (21a, 21b) is configured to open the left and right leg openings from the waist 4 (4a, 4b) when the elastic member is extended and joined between the outer sheet 10a and the inner sheet 10b. The elastic member is formed so as to gradually reduce the expansion ratio as it is disposed toward the portions 13 and 14. Thereby, the underpants type diaper 1 of this embodiment gradually weakens the tightening force around the waist from the waist 4 (4a, 4b) side to the left and right openings 13, 14 and fits the wearer's abdomen and buttocks. Can be made. Moreover, it can suppress that the underpants type diaper 1 slips down.

In addition, a non-elastic portion P (inside the one-dot chain line in FIG. 2) where the tightening force of the waist elastic body 21 (21a, 21b) does not reach is provided around the waist of the exterior sheet 10 (the waist elastic body 21). ing. The inelastic portion P is line symmetric with respect to the center line C1 in the width direction (left and right direction, X direction) of the exterior sheet 10, and the waist portion 4 (4a, 4b) and the left and right leg openings 13, 14 The width dimension (left-right width) is gradually increased from the waist 4 (4a, 4b) side toward the left and right leg openings 13, 14 side. Also by this, the underpants type diaper 1 gradually weakens its tightening force as it goes from the waist 4 (4a, 4b) side of the waist elastic body 21 (21a, 21b) to the left and right leg openings 13, 14 side. can do.
Here, as described above, the waist elastic body 21 (21a, 21b) gradually weakens its tightening force from the waist 4 (4a, 4b) side toward the left and right leg openings 13, 14 side. However, the range in which the tightening force is changed is preferably a position corresponding to the upper pubic bone from the lower part of the wearer's waist on the abdominal side, and a position corresponding to the sciatic bone from the lower part of the wearer's waist on the back side. .
Further, the tightening force of the waist elastic body 21 (21a, 21b) is 60, which is the weakest part (the crotch 5 side) and the strongest part (the waist part 4 side) in order to achieve the above-described effect more effectively. It is preferable to be -95%.
In the pants-type diaper 1, the abdominal member 11 and the back member 12 change the tension of the elastic member 21 (21a, 21b) and the width dimension (left-right width) of the non-elastic part P. Alternatively, the tightening force by the waist elastic body 21 (21a, 21b) may be changed back and forth (abdominal side and back side). Specifically, the tension of the elastic member of the waist elastic member 21a of the abdominal member 11 is made stronger than the elastic member of the waist elastic member 21b of the back member 12, or the elasticity of the belly member 11 is inelastic. By narrowing the width dimension (left-right width) of the part P compared to the non-elastic part P of the back side member 12, the tightening force on the belly side of the waist elastic body 21 is stronger than the back side. can do. Thereby, the underpants type diaper 1 can be made to follow each body type of a wearer's abdominal side and back side, and the fit property at the time of wear can be improved more.

The inelastic portion P is a region where the waist elastic members 21 (21a, 21b) of the abdominal member 11 and the back member 12 of the exterior sheet 10 overlap the absorbent member 30, and the width direction (left and right) of the absorbent member 30 Direction, X direction) is formed inside the both end edges (left and right end edges). In the region where the waistline elastic body 21 (21a, 21b) and the absorbing member 30 of the exterior sheet 10 overlap, a part having the tightening force of the above-described waistline elastic body 21 (21a, 21b) is also formed.
Here, when the non-elastic portion P extends to the outside of both end edges (left and right end edges) in the width direction of the absorbent member 30, the absorbent member 30 is separated from the wearer's body and causes leakage and the like. There is a fear. Therefore, as described above, the non-elastic portion P needs to be formed inside the both end edges (left and right end edges) in the width direction of the absorbing member 30, and the maximum width depends on the width dimension of the absorbing member 30. The width is limited and needs to be smaller than the width dimension (left-right width) of the absorbing member 30.

  In the present embodiment, the inelastic portion P has a dimension in the width direction (left and right width) that gradually increases from the waist 4 (4a, 4b) side toward the left and right leg openings 13 and 14, and the left and right legs. It is formed in a shape combining a substantially triangular shape and a substantially rectangular shape so as to be constant at a position close to the openings 13 and 14. Therefore, the waist elastic body 21 (21a, 21b) has a widthwise dimension (left-right width) in a region where the exterior sheet 10 and the absorbing member 30 overlap, and the left and right openings 13 from the waist 4 (4a, 4b) side. The length gradually decreases toward the 14th side, and does not exist when the widthwise dimension (left-right width) of the inelastic part P becomes constant. That is, the waistline elastic body 21 (21a, 21b) is formed on the substantially triangular outer side of the non-elastic portion P in the region where the exterior sheet 10 and the absorbing member 30 overlap.

Here, in order to prevent the pants-type diaper from slipping down, the waist elastic body 21 must be positioned at the upper part of the iliac projecting in the width direction on the pelvis. When tightening horizontally, the abdomen whose dimensions change the most depending on breathing and posture will continue to be tightened, which may increase discomfort. On the other hand, if the tightening is weakened, there is a case where a slip-off occurs, and it is difficult to set an optimum tension according to a different body shape depending on the wearer.
For this reason, the pants-type diaper 1 of the present invention suppresses the horizontal tightening of the abdomen without the skeleton by providing the inelastic part P as described above, and the upper pubic bone from the upper left and right iliac along the pelvis. Thus, the tension of the elastic body 21a on the ventral side in the oblique direction can be exerted. Also, on the back side, the circumference of the body from the waist to the hip gradually increases, and the tightening of the back waist elastic body 21b can be adjusted so that it can be supported with equal tension. . By these, the underpants type diaper 1 can suppress slipping off while realizing good fit.

Moreover, in this embodiment, the non-elastic part P is formed so that the upper end part (part by the side of the waist | lumbar part 4a, 4b) protrudes from the area | region where the exterior sheet 10 and the absorption member 30 overlap.
This is because pants-type diaper absorbent members generally absorb urine and other excrement, so that they cover a wide area from the urethral orifice to the vicinity of the anus. Some of them have been made longer to keep them from flowing out. However, if the length is too long, the abdomen and the back are uncomfortable, and the length is usually 400 to 600 mm in the case of an adult. On the other hand, the unfolded length of the pant-type diaper or pad holder (the length from the waist 4a of the abdominal member 11 to the waist 4b of the dorsal member 12) is about 100 to 500 mm longer for adults than the length of the absorbent member. Is formed.
Here, the appropriate vertical position of the inelastic portion P is preferably provided from the lower waist to the upper pubic bone on the abdominal side, and from the lower waist to the sciatic bone on the back side. Since it is not restricted, it does not necessarily overlap with the absorbing member, and in this embodiment, the upper end portion of the inelastic portion P protrudes as described above.

By forming the non-elastic portion P in the region where the exterior sheet 10 and the absorbing member 30 overlap, the waistline elastic body 21 (21a, 21b) is provided in the region around the body of the exterior sheet 10 where the absorbent member 30 does not overlap. Will exist. Thereby, the underpants type diaper 1 can suppress that the underpants type diaper 1 slips off from a wearer's body by the weight of the absorbing member 30 that has absorbed the liquid material.
In addition, a part of the waistline 4 (4a, 4b) side of the waist elastic body 21 (21a, 21b) is a region where the exterior sheet 10 and the absorbing member 30 overlap, and the substantially elastic outer side of the inelastic part P The direction of tightening of the pants-type diaper 1 with respect to the wearer's waist can be changed obliquely upward (see arrow A in FIG. 1). As a result, the trunk circumference of the pant-type diaper 1 bends in a curved shape so as to draw an arc from both sides of the waist part 4 toward the crotch part 5. The fitting property at the time of wearing of the diaper 1 and the slip-off suppressing effect can be further improved.

  Furthermore, by providing the non-elastic part P in the exterior sheet 10, the length of the elastic member in the width direction (left-right direction) as described above is such that the left and right leg openings 13, from the waist part 4 (4a, 4b) side, Since it gradually shortens as it is arranged toward the 14th side, the trunk circumference of the pants-side diaper 1 is viewed from the waist 4 (4a, 4b) side toward the left and right leg openings 13, 14 when viewed as a whole. As a result, the region where the tension of the waist elastic body 21 (21a, 21b) does not exist gradually increases. Therefore, the pants-type diaper 1 can be tightened to the wearer's abdomen and buttocks according to the shape of the body and weaken from the waist 4 (4a, 4b) side toward the left and right leg openings 13, 14 side. Also by this, the fitting property at the time of wear can be improved, and the slippage suppression effect of the pants-type diaper 1 can be improved.

  In the present embodiment, the non-elastic portion P is the waist elastic body 21 (21a, 21b) around the waist between the waist 4 (4a, 4b) of the exterior sheet 10 and the left and right leg openings 13, 14. ) Is not formed, but is not limited to this. For example, the non-elastic portion P is formed by forming the waist elastic body 21 (21a, 21b) on almost the entire surface from the waist 4 (4a, 4b) side of the exterior sheet 10 to the left and right leg openings 13, 14 side. The elastic member constituting the waist elastic body 21 (21a, 21b) may function as an elastic body only in a region corresponding to the non-elastic portion P, that is, by providing a state in which no tension is generated. .

From the above, the pants-type diaper 1 of the present embodiment has the following effects.
(1) The pants-type diaper 1 is gradually tightened as the waistline elastic body 21 (21a, 21b) moves from the waist 4 (4a, 4b) side of the exterior sheet 10 toward the left and right leg openings 13, 14 side. Since it forms so that it may become weak, the underpants type diaper 1 can be fitted to a wearer's abdomen and buttocks, and it can control that underpants type diaper 1 slips off.
(2) The pants-type diaper 1 is such that the elastic member of the waist elastic body 21 (21a, 21b) disposed on the left and right leg openings 13, 14 side is closer to the waist 4 (4a, 4b) than the elastic member. Since it is provided so that the tension is weaker than that of the elastic member disposed on the body, a change in tightening of the waistline elastic body 21 (21a, 21b) can be realized more specifically.

(3) The pants-type diaper 1 has a width dimension (left-right width) that gradually increases as the inelastic portion P moves from the waist 4 (4a, 4b) side to the left and right leg openings 13, 14 side. Therefore, it is possible to realize a change in tightening of the waistline elastic body 21 more specifically.
(4) As for the underpants type diaper 1, the non-elastic part P is an area | region where the exterior sheet 10 and the absorption member 30 overlap, Comprising: Both ends edge (left-right edge) of the width direction (left-right direction, X direction) of the absorption member 30 The waist elastic body 21 (21a, 21b) is partly formed in a region where the exterior sheet 10 and the absorbing member 30 overlap. Thereby, in the area | region where the absorption member 30 around the trunk | drum of the exterior sheet | seat 10 does not overlap, the trunk | circumference elastic body 21 (21a, 21b) will exist, and the underpants type diaper 1 is the absorption member 30 which absorbed the liquid body. It is possible to prevent the weight from falling off from the wearer's body.
Furthermore, a part of the waist part 4 (4a, 4b) side of the waist elastic body 21 (21a, 21b) is formed in a region where the exterior sheet 10 and the absorbent member 30 overlap, thereby preventing the waist of the wearer. The pants-type diaper 1 can be held in a state where the pants-type diaper 1 is pulled obliquely upward, and the effect of suppressing the slippage of the pants-type diaper 1 can be improved.

(Second Embodiment)
In the present embodiment, a pad holder that holds an absorbent article as a disposable underwear will be described as an example.
FIG. 4 is a development view of the pad holder of the second embodiment, and corresponds to FIG. FIG. 4A is a diagram illustrating an example of a pad holder according to the second embodiment, and FIG. 4B is a diagram illustrating another example of the pad holder according to the second embodiment. In FIG. 4, the width direction (left-right direction) of the developed pad holder is defined as the X direction (+ X is on the left side), and the vertical direction perpendicular to the X direction is defined as the Z direction. Here, in FIG. 4, the upward direction of the ventral member indicates the Z1 direction, and the upward direction of the back side member indicates the Z2 direction.
Note that, in the following description and drawings, the same reference numerals or the same reference numerals (last two digits) are given to the portions that perform the same functions as those of the first embodiment described above, and redundant descriptions are omitted as appropriate. To do.

The pad holder 101 of the second embodiment is mainly different from the pant-type diaper 1 of the first embodiment in that the absorbent member 30 is not provided.
The pad holder 101 is a pants-type holder that holds absorbent articles such as pads and napkins that absorb liquids such as urine and blood. The pad holder 101 can realize the same function as the pants-type diaper 1 of the first embodiment described above by wearing an absorbent article on the crotch portion 105 and wearing it.
As shown in FIG. 4, the pad holder 101 includes an exterior sheet 110 including a ventral member 111, a back member 112, a crotch portion 105, a left leg opening portion 113, a right leg opening portion 114, a joint portion 115, and the like. Is formed.

The belly side member 111 and the back side member 112 are provided around the waist of the exterior sheet 110, that is, from the waist 104 (104a, 104b) side of the exterior sheet 110 to the left leg opening 113 and the right leg opening 114 side. 121 (121a, 121b) is provided.
The waistline elastic body 121 (121a, 121b) extends from the waist 104 (104a, 104b) side of the pad holder 101 to the left and right leg openings 113, 114 side in the width direction (left-right direction, X direction) of the exterior sheet 110. It is comprised from the some thread-like elastic member arrange | positioned. Here, the tension of the elastic members constituting the waist elastic body 121 (121a, 121b) gradually becomes weaker from the waist 104 (104a, 104b) of the pad holder 101 toward the left and right leg openings 113, 114. It is formed as follows. That is, the elastic member arranged on the left and right leg openings 113, 114 side (lower end side) is more than the elastic member arranged on the waist portion 104 (104a, 104b) side (upper end side) than the elastic member. It is provided to reduce the tension. Specifically, the waistline elastic body 121 (121a, 121b) has left and right leg openings from the waist 104 (104a, 104b) when the elastic member is extended and joined between the outer sheet 110a and the inner sheet 110b. The elastic member is formed so as to gradually reduce the expansion ratio as it is arranged toward the portions 113 and 114.

Further, a non-elastic portion P (within a one-dot chain line in FIG. 4) where the tension of the waist elastic body 121 (121a, 121b) does not reach is provided around the waist of the exterior sheet 110. The inelastic part P is line symmetric with respect to the center line C1 in the width direction (left and right direction, X direction) of the exterior sheet 110, and includes the waist 104 (104a, 104b) and the left and right leg openings 113, 114. The width dimension (left-right width) is gradually increased from the waist 104 (104a, 104b) toward the left and right leg openings 113, 114.
Here, since the absorbent article may be arbitrarily selected and arranged by the wearer, the non-elastic part P is assumed in advance after assuming the width dimension (left and right width) of the absorbent article to be arranged. It is desirable to determine the dimension in the width direction (left-right direction, X direction). That is, it is desirable that the width dimension (left-right width) of the inelastic part P is formed to be equal to or less than the width dimension (left-right width) of the absorbent article assumed in advance. Thereby, when a wearer wears pad holder 101 in which an absorptive article is arranged, it can control that an absorptive article leaves from a wearer's body and a leak etc. occur.

  In the present embodiment, the non-elastic portion P has a width direction (left-right width) dimension, and the left and right leg openings 113, 114 from the waist 104 (104a, 104b) side of each of the abdominal member 111 and the back member 112. It is formed in a substantially triangular shape so as to gradually increase toward the side. Therefore, the waist elastic body 121 (121a, 121b) is formed on the substantially triangular outer side of the non-elastic portion P, and the dimension in the width direction (left-right direction, X direction) is the waist portion 104 (104a, 104b). ) Gradually decreases from the side toward the left and right leg openings 13, 14 side.

  As described above, a part of the waist elastic body 121 (121a, 121b) on the side of the waist 104 (104a, 104b) is formed on the outer side of the inelastic part P in a substantially triangular shape. The direction of tightening of the pad holder 101 with respect to can be changed obliquely upward. As a result, the waist of the pad holder 101 bends in a curved shape so as to draw an arc from both sides of the waist toward the crotch. It is possible to further improve the fit at the time of wearing and the slip-off suppressing effect.

  Further, by providing the non-elastic portion P in the exterior sheet 110, the length of the elastic member in the width direction is from the waist portion 104 (104a, 104b) side toward the left and right leg opening portions 113, 114 side as described above. Since it gradually shortens as it is arranged, the waist circumference of the pad holder 101 is gradually elastic as it goes from the waist 104 (104a, 104b) side to the left and right leg openings 113, 114 when viewed as a whole. The region where the tension of the body 121 (121a, 121b) does not exist is widened. Therefore, the pad holder 101 can change the tightening of the wearer's abdomen and buttocks according to the shape of the body, and can suppress the slipping of the pad holder 101 while realizing fit at the time of wearing. .

As described above, the pad holder 101 of the present embodiment is formed so that the tightening is gradually weakened from the waist 104 (104a, 104b) side of the exterior sheet 110 toward the left and right leg openings 113, 114. The pad holder 101 can be fitted to the wearer's abdomen and buttocks, and the pad holder 101 can be prevented from slipping down.
Further, in the pad holder 101, the elastic member of the waist elastic body 121 (121a, 121b) arranged on the left and right leg opening portions 113, 114 side is arranged on the waist 104 (104a, 104b) side than the elastic member. Since the tension is formed so as to be weaker than that of the elastic member, the change in tightening of the waistline elastic body 121 (121a, 121b) can be realized more specifically.
Further, the pad holder 101 is formed such that the width of the inelastic portion P gradually increases from the waist portion 104 (104a, 104b) side toward the left and right leg opening portions 113, 114. More specifically, the tightening change of the waist elastic body 121 (121a, 121b) can be realized.
The pad holder 101 is formed so that the width dimension of the inelastic portion P gradually increases as it goes from the waist 104 (104a, 104b) to the openings 113, 114. Accordingly, when the pad holder 101 is used in a state where the absorbent article is disposed in the crotch portion 105, the pad holder 101 is displaced from the wearer's body due to the weight of the absorbent article that has absorbed the liquid material. Can be suppressed.

  As shown in FIG. 4B, the pad holder 101 may have a three-dimensional gather 130 disposed on the crotch portion 105 thereof. In this case, the non-elastic portion P is a region where the exterior sheet 110 and the three-dimensional gather 130 overlap, similar to the absorbing member 30 of the first embodiment, and is formed on the inner side of both end edges in the width direction of the three-dimensional gather 130. Is desirable. By doing so, the pad holder 101 can have the same effect as the pants-type diaper 1 of the first embodiment.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made as in the modifications described later, and these are also included in the present invention. Within the technical scope. In addition, the effects described in the embodiments are merely a list of the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the embodiments. It should be noted that the above-described embodiment and modifications described later can be used in appropriate combination, but detailed description thereof is omitted.

FIG. 5 is a developed view of a modified underpants type diaper. Fig.5 (a) is a figure which shows the underpants type diaper of a deformation | transformation form (1), and FIG.5 (b) is a figure which shows the underpants type diaper of a deformation | transformation form (2). In FIG. 5, the width direction (left-right direction) of the developed pant-type diaper is the X direction (+ X is the left side), and the up-down direction perpendicular to the X direction is the Z direction. Here, in FIG. 5, the upward direction of the ventral member indicates the Z1 direction, and the upward direction of the back side member indicates the Z2 direction.
(Deformation)
(1) In 1st Embodiment, although the underpants type diaper 1 showed the example in which the abdominal member 11 and the back member 12 were connected integrally by the crotch part (crotch member) 5, it is limited to this. Not a thing. For example, as shown to Fig.5 (a), as for the underpants type diaper 1, the crotch part (crotch member) 5 provided with the abdominal member 11, the back member 12, and the absorption member 30 is each provided separately. Each may be joined by an adhesive such as hot melt.

(2) In each embodiment, although the left leg opening part and the right leg opening part showed the example formed asymmetrically with the abdominal side member and the back side member, it is not limited to this. For example, as shown in FIG. 5B, the left and right leg openings 13, 14 are formed in the same shape in the ventral member 11 and the dorsal member 12, that is, symmetrical with respect to the center line C2. You may do it. By doing in this way, the underpants type diaper without the front and back distinction can be formed, and a wearer's convenience can be improved.

(3) In the first embodiment, an example is shown in which the inelastic portion P of the pants-type diaper 1 is a combination of a triangular shape and a rectangular shape. In the second embodiment, the inelastic portion P of the pad holder 101 is However, the present invention is not limited to this example. The shape of the non-elastic portion P is preferably set appropriately in accordance with the tension and arrangement position of the outer elastic body around the waist, so that the width dimension (left-right width) is from the waist to the left and right leg openings. For example, it may be formed in a parabolic shape having an apex on the waist side, an arc shape, a trapezoidal shape, or a stepped shape (pyramid shape).

(4) In each embodiment, the waist elastic body gradually reduces the tension of the elastic member of the waist elastic body as it goes from the waist 4 (4a, 4b) to the left and right leg openings 13, 14. Although an example in which the expansion ratio of the elastic member is gradually lowered has been shown, the present invention is not limited to this.
For example, the material of the elastic member constituting the waist elastic body may be changed as the waist 4 (4a, 4b) moves to the left and right leg openings 13, 14 so that the tension is gradually reduced. Further, the thickness of the thread-like elastic member may be gradually reduced as it is arranged from the waist 4 (4a, 4b) toward the left and right leg openings 13, 14, and further, the method described above. May be combined as appropriate.

(5) In the first embodiment, the pants-type diaper 1 has shown an example in which the upper end portion of the non-elastic portion P protrudes from the region where the exterior sheet 10 and the absorbent member 30 overlap, but is limited to this. Instead, it may be included in a region where the exterior sheet 10 and the absorbing member 30 overlap.
(6) In each embodiment, the pants-type diaper 1 and the like gradually weaken the tightening of the waist elastic body 21 (21a, 21b) from the waist 4 (4a, 4b) toward the left and right leg openings 13, 14. In order to do this, the example in which the tension of the elastic member is gradually changed and the non-elastic part P is provided has been shown, but the present invention is not limited to this. For example, by reducing only the tension of the elastic member without providing the non-elastic portion P, or by providing only the non-elastic portion P without changing the tension of the elastic member, the waistline elastic body 21 (21a, 21b) ) May be gradually weakened from the waist 4 (4a, 4b) toward the left and right leg openings 13,14.

1: pants-type diaper, 2: left leg opening hole, 3: right leg opening hole, 4 (4a, 4b), 104 (104a, 104b): waist, 5,105: crotch (crotch member), 10, 110 : Exterior sheet 11, 111: ventral member 12, 112: dorsal member 13, 113: left leg opening 14, 114: right leg opening 15, 115: joint, 20 (20a, 20b) ), 120 (120a, 120b): waist elastic body, 21 (21a, 21b), 121 (121a, 121b): waist elastic body, 22 (22a, 22b, 22c, 22d), 122 (122a, 122b, 122c, 122d): leg elastic body, 30: absorbent member, 31: absorbent body, 32: top sheet, 33: back sheet, 34: side elastic body, 36: crotch elastic body, 101: pad holder, P : Elastic portion

  The present invention relates to disposable underwear.

Conventionally, various proposals have been made on disposable underwear such as disposable pants-type diapers and pad holders for holding pads that absorb urine and the like (for example, Patent Document 1).
The disposable wearing article of Patent Document 1 is provided with an elastic member that draws a convex curve toward the upper edge, and an elastic member that draws a convex curve toward the lower edge between the left and right ends of the abdominal nonwoven fabric, Techniques have been proposed for suppressing tight tightening of the bulging tummy top.
However, such disposable wears may not fit well depending on the wearer's body shape and may fall off.

JP-A-8-294510

  The subject of this invention is providing the disposable underwear which fits a body favorably and can suppress slipping off.

In order to solve the above-mentioned problems, the disposable underwear (1) of the present invention includes a ventral member (11), a back member (12), a crotch member (5) connecting the two members, and the ventral member. (11) and the left end portions (15a, 15b) and the right end portions (15c, 15d) of the back side member (12) are joined to each other, whereby the abdominal side member (11) and the back side member (12 ) And the crotch member (5) and the left and right leg openings (13, 14), and the ventral member (11) and the dorsal member (12) extend in the left-right direction. A waist elastic body (21a, 21b) disposed in a region above the left and right leg openings (13, 14) under the waist (4a, 4b) along the upper edge of each of the members; wherein the waist elastic member (21a, 21b) has, on its part, the non-elastic portion having no clamping force ( ) Is formed in a triangular shape with a vertex at the waist side, the waist (4a, with gradual clamping force as from 4b) side toward the leg openings (13, 14) side of the left and right becomes weak, girth The tightening direction is a direction (A) obliquely upward from the center to each left and right .
In the above aspect of the present invention, the inelastic portion (P) has the same width as that of the portion formed in a triangular shape having a vertex on the waist side and the lower portion of the triangular portion. The shape which combined the rectangular part to perform may be sufficient.
In each of the above aspects of the present invention, the waist elastic body (21a, 21b) extends in the left-right direction of the abdominal member (11) and the back member (12), and the waist (4a, 4b). ) And a plurality of elastic members arranged in a region above the left and right leg openings (13, 14), and arranged on the left and right leg openings (13, 14) side. The elastic member may have a lower tension than the elastic member disposed on the waist (4a, 4b) side than the elastic member .
As mentioned above, in order to make an understanding easy, although the code | symbol corresponding to embodiment of this invention was attached | subjected and demonstrated, it is not limited to this. Note that the configuration described with reference numerals may be improved as appropriate, or at least a part thereof may be replaced with another configuration.

The disposable underwear of the present invention bends in a curvilinear shape so that the waistline draws an arc from both sides of the waist to the crotch direction, and thus fits well to the body and can suppress slippage.

It is a perspective view of the underpants type diaper of a 1st embodiment. It is an expanded view of the underpants type diaper of 1st Embodiment. It is sectional drawing of the absorption member provided in the underpants type diaper of 1st Embodiment. It is an expanded view of the pad holder of 2nd Embodiment. It is an expanded view of the underpants type diaper of a deformation | transformation form.

(First embodiment)
Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, a pants-type diaper will be described as an example of disposable underwear.
FIG. 1 is a perspective view of a pants-type diaper according to the present embodiment.
FIG. 2 is a development view of the pants-type diaper of the present embodiment.
In FIG. 1, the left-right direction of the pant-type diaper is the X direction (+ X is the left side), the front-rear direction is the Y direction (+ Y is the front side), and the vertical direction is the Z direction (+ Z is the upper side). In FIG. 2, the width direction (left-right direction) of the developed pant-type diaper is the X direction (+ X is the left side), and the up-down direction orthogonal to the X direction is the Z direction. Here, in FIG. 2, the upward direction of the ventral member indicates the Z1 direction, and the upward direction of the back side member indicates the Z2 direction.
In addition, in FIG. 1, each gather provided in a pants-type diaper is abbreviate | omitted. In FIG. 2, the elastic members forming the gathers of the pant diaper are all in an extended state.

  In the following description, the up-down direction, the left-right direction, and the front-rear direction indicate directions in a normal use state of a pant-type diaper (a state in which a standing wearer wears a pant-type diaper). That is, the upper side of the pants-type diaper means the waist side, the lower side is the crotch side, the left side is the left leg side, the right side is the right leg side, the front side is the abdomen side, and the rear side is the buttocks side ( The dorsal side).

As shown in FIGS. 1 and 2, the pant-type diaper 1 is a disposable underwear including an absorbent member that absorbs a wearer's urine, blood, or the like (liquid material). The pants-type diaper 1 includes an outer sheet 10a positioned on the outer side of the diaper, an outer sheet 10 on which an inner sheet 10b positioned on the inner side of the diaper is stacked, and an absorption disposed on the inner surface (inner sheet 10b) side of the outer sheet 10. It is comprised from the member 30. FIG.
The outer sheet 10a and the inner sheet 10b constituting the outer sheet 10 include non-woven fabrics or films made of chemical fibers such as polyethylene, polypropylene, polyester, nylon and rayon, natural fibers such as cotton and cellulose, and polyethylene and polypropylene. A mixed nonwoven fabric, a film, or the like obtained by appropriately combining the above materials such as a mixed nonwoven fabric is used. Moreover, you may use a nonwoven fabric, a film, tissue, an elastic material, or these laminated bodies, or connecting them suitably as one sheet.
As shown in FIGS. 1 and 2, the exterior sheet 10 includes an abdominal member 11, a dorsal member 12, a crotch (crotch member) 5, a left leg opening 13, a right leg opening 14, and a joint 15. It is configured.

The ventral member 11 is a portion that covers the abdomen of the wearer's front. The dorsal member 12 is a part that covers the buttocks around the back of the wearer. The abdominal member 11 and the dorsal member 12 are connected together via a crotch portion (crotch member) 5.
As shown in FIGS. 1 and 2, the abdominal member 11 and the dorsal member 12 extend in the width direction (left and right direction, X direction) of the respective upper end edges of the waist portions 4 (4a, 4b). The waist elastic bodies 20 (20a, 20b) are provided respectively. Further, under these waist elastic bodies 20 (20a, 20b), waist elastic bodies 21 (21a, 21b) are provided in regions above the left leg opening 13 and the right leg opening 14, respectively. ing.

The left leg opening 13 is provided at the left lower end in the width direction of the abdominal member 11 and the back member 12 on the left side of the crotch portion 5.
The right leg opening 14 is provided on the right lower end in the width direction of the abdominal member 11 and the back member 12 on the right side of the crotch portion 5.
The left leg opening 13 and the right leg opening 14 are joined to the left end 15a, 15b and the right end 15c, 15d of the ventral member 11 and the back member 12 as the joint 15 in FIG. As shown, it is a notch in which opening holes 2 and 3 for inserting a wearer's left leg and right leg are formed. The left leg opening 13 and the right leg opening 14 are formed by being surrounded by the ventral member 11, the back member 12, and the crotch portion 5.
As shown in FIG. 2, the left leg opening 13 and the right leg opening 14 are provided with leg-around elastic bodies 22 (22a, 22b, 22c, 22d) along the respective opening edges.

In the present embodiment, the left leg opening 13 and the right leg opening 14 are formed symmetrically with respect to the center line C1 in the X direction, and are formed asymmetric with respect to the center line C2 in the Z direction. ing.
The joining portion 15 is a portion that joins the left end portion 15a of the ventral member 11 and the left end portion 15b of the dorsal member 12, and a portion that joins the right end portion 15c of the ventral member 11 and the right end portion 15d of the dorsal member 12. It is formed by heat sealing, ultrasonic sealing, or adhesive (for example, hot melt adhesive).

The waist elastic body 20 (20a, 20b) is provided to hold the pants-type diaper 1 against the wearer's waist. The waist elastic body 20 (20a, 20b) is composed of a plurality of elastic members extending along the upper edge of each waist (4a, 4b) of the ventral member 11 and the back member 12. .
The waist elastic body 21 (21a, 21b) is provided to hold the pant-type diaper 1 with respect to the wearer's waist. The waist elastic body 21 (21a, 21b) extends in the width direction (left-right direction, X direction) of the abdominal member 11 and the back member 12 of the exterior sheet 10, and the abdominal member 11 and the back member 12 It is comprised from the some elastic member arrange | positioned in the area | region on the left leg opening part 13 and the right leg opening part 14 under each waist | lumbar part 4 (4a, 4b).
The leg-around elastic body 22 (22a, 22b, 22c, 22d) is provided to hold the pant-type diaper 1 with respect to the base portions of the left and right legs of the wearer. The leg elastic body 22 (22a, 22b, 22c, 22d) includes a plurality of elastic members arranged along the opening edges of the left leg opening 13 and the right leg opening 14.

The waist elastic body 20, the waist elastic body 21, and the leg elastic body 22 are respectively disposed between the outer sheet 10a and the inner sheet 10b constituting the exterior sheet 10, and each of the outer sheets is stretched. 10a and the inner sheet 10b. Thereby, as for the underpants type diaper 1, gathers will be formed in each of the waist part 4 of the exterior sheet 10, the waist circumference, and the edge part of the left and right leg opening parts 13 and 14.
The elastic members constituting the waist elastic body 20, the waist elastic body 21, and the leg elastic body 22 are each formed of a stretchable thread-like material such as natural rubber, polyurethane resin, and stretchable hot melt. . Each elastic member can be not only a thread-like member but also a belt-like member.

FIG. 3 is a cross-sectional view of the absorbent member provided in the pant diaper of the present embodiment. 3 is a cross-sectional view of the absorbent member taken along the line AA ′ of FIG.
As shown in FIG. 2, the absorbing member 30 is arranged on the inner side of the exterior sheet 10 from the waist 4a side of the abdominal member 11 to the waist 4b side of the back member 12 through the crotch portion 5 and urine, blood, etc. It is a pad that absorbs a liquid material and is formed in a substantially rectangular shape.
As shown in FIG. 3, the absorbent member 30 includes an absorbent body 31, a top sheet 32, a back sheet 33, a side elastic body 34, a gather sheet 35, a crotch elastic body 36, and the like.
The absorber 31 is a member that absorbs a liquid material such as urine and blood, and is a combination of absorbent materials such as absorbent paper, cotton-like pulp, and a polymer absorbent. The absorber 31 is disposed between the top sheet 32 and the back sheet 33 and absorbs and holds the liquid material that has permeated from the top sheet 32.

The surface sheet 32 is a sheet member that is disposed on the inner side of the pants-type diaper 1 and is on the side that the wearer's skin touches and covers the surface side of the absorbent body 31. The top sheet 32 is formed of, for example, a liquid permeable material such as a nonwoven fabric, and allows the liquid material generated in the pant-type diaper 1 to permeate the absorbent body 31.
The back sheet 33 is a sheet member that covers the back side of the absorber 31. The back sheet 33 is made of, for example, a liquid-impermeable material such as a polyethylene film, and the liquid material absorbed by the absorber 31 or the liquid material that has passed through the top sheet 32 leaks to the exterior sheet 10 side. To prevent it.

The gather sheet 35 is a sheet member that forms a three-dimensional gather in the absorbing member 30. As shown in FIG. 3, two gather sheets 35 are provided, and each of them is joined to the left end portion and the right end portion of the outer surface (opposite side to the absorber 31) of the back sheet 33. The gather sheet 35 is made of, for example, a non-woven fabric or a material obtained by bonding a polyethylene film or the like to the non-woven fabric, and prevents the liquid material that could not be absorbed by the absorber 31 from leaking out from the crotch portion 5.
As shown in FIGS. 1 and 3, the gather sheet 35 has a side elastic body 34 disposed along the absorbent body 31 on the inner side where the end edges of the leg openings 13 and 14 are folded. Has been.

The side elastic body 34 is composed of a plurality of elastic members, and is joined inside the folded portion of the gather sheet 35 in an extended state. Thereby, a three-dimensional gather will be formed in the position corresponding to the crotch part 5 of the underpants type diaper 1, and it prevents that excrement and a liquid body leak from the crotch part 5 of the underpants type diaper 1. Can do.
Further, the gather sheet 35 is provided with a crotch elastic body 36 at a joint portion with the back sheet 33.
The crotch elastic body 36 is an elastic member that is disposed along the left and right edges of the absorber 31. Even if the excrement is absorbed by the pant-type diaper 1 and the weight of the absorbent body increases, the crotch elastic body 36 is pressed against the crotch between the left and right ends of the absorbent member 30 by the tension of the elastic body. It is possible to prevent a gap from occurring between them. Further, the crotch elastic body 36 is positioned along the wearer's groin, so that the absorbent member 30 abuts against the wearer's crotch without being bent or slackened, and has an extremely good fit and prevention. Leakage can be realized.
In the present embodiment, the crotch elastic body 36 is linearly disposed on each of the left and right ends of the absorbent member 30 in the width direction. However, a plurality of crotch elastic bodies 36 may be disposed.

  The elastic members constituting the side elastic body 34 and the crotch elastic body 36 are made of a stretchable thread-like material such as natural rubber, polyurethane resin, stretchable hot melt, etc., like the waist elastic body 20 described above. Is formed. The elastic member can be not only a thread-like member but also a belt-like or sheet-like member. Further, the entire side elastic body may be formed of a material such as a stretchable sheet. In this case, it is necessary to form the elastic body so that the stretching force acts in the extending direction of the illustrated elastic body.

Next, the detailed configuration of the outer periphery of the exterior sheet 10 and the waist elastic body 21 (21a, 21b) provided around the waist will be described.
As described above, the waistline elastic body 21 (21a, 21b) extends in the width direction (left-right direction, X direction) of the abdomen side member 11 and the back side member 12 of the exterior sheet 10, and the pants-type diaper 1 It is composed of a plurality of thread-like elastic members arranged from the waist 4 (4a, 4b) to the left leg opening 13 and the right leg opening 14. Here, the tightening force of the waistline elastic body 21 (21a, 21b) gradually weakens from the waist 4 (4a, 4b) side of the pant-type diaper 1 toward the left and right leg openings 13, 14 side. It is formed as follows.

In the present embodiment, among the elastic members constituting the waist elastic body 21 (21a, 21b), the elastic members disposed on the left and right leg openings 13, 14 side (lower end side) are lower than the elastic members. 4 (4a, 4b) is provided so that tension (contraction force) is weaker than that of the elastic member arranged on the side (upper end side).
Specifically, the waist elastic body 21 (21a, 21b) is configured to open the left and right leg openings from the waist 4 (4a, 4b) when the elastic member is extended and joined between the outer sheet 10a and the inner sheet 10b. The elastic member is formed so as to gradually reduce the expansion ratio as it is disposed toward the portions 13 and 14. Thereby, the underpants type diaper 1 of this embodiment gradually weakens the tightening force around the waist from the waist 4 (4a, 4b) side to the left and right openings 13, 14 and fits the wearer's abdomen and buttocks. Can be made. Moreover, it can suppress that the underpants type diaper 1 slips down.

In addition, a non-elastic portion P (inside the one-dot chain line in FIG. 2) where the tightening force of the waist elastic body 21 (21a, 21b) does not reach is provided around the waist of the exterior sheet 10 (the waist elastic body 21). ing. The inelastic portion P is line symmetric with respect to the center line C1 in the width direction (left and right direction, X direction) of the exterior sheet 10, and the waist portion 4 (4a, 4b) and the left and right leg openings 13, 14 The width dimension (left-right width) is gradually increased from the waist 4 (4a, 4b) side toward the left and right leg openings 13, 14 side. Also by this, the underpants type diaper 1 gradually weakens its tightening force as it goes from the waist 4 (4a, 4b) side of the waist elastic body 21 (21a, 21b) to the left and right leg openings 13, 14 side. can do.
Here, as described above, the waist elastic body 21 (21a, 21b) gradually weakens its tightening force from the waist 4 (4a, 4b) side toward the left and right leg openings 13, 14 side. However, the range in which the tightening force is changed is preferably a position corresponding to the upper pubic bone from the lower part of the wearer's waist on the abdominal side, and a position corresponding to the sciatic bone from the lower part of the wearer's waist on the back side. .
Further, the tightening force of the waist elastic body 21 (21a, 21b) is 60, which is the weakest part (the crotch 5 side) and the strongest part (the waist part 4 side) in order to achieve the above-described effect more effectively. It is preferable to be -95%.
In the pants-type diaper 1, the abdominal member 11 and the back member 12 change the tension of the elastic member 21 (21a, 21b) and the width dimension (left-right width) of the non-elastic part P. Alternatively, the tightening force by the waist elastic body 21 (21a, 21b) may be changed back and forth (abdominal side and back side). Specifically, the tension of the elastic member of the waist elastic member 21a of the abdominal member 11 is made stronger than the elastic member of the waist elastic member 21b of the back member 12, or the elasticity of the belly member 11 is inelastic. By narrowing the width dimension (left-right width) of the part P compared to the non-elastic part P of the back side member 12, the tightening force on the belly side of the waist elastic body 21 is stronger than the back side. can do. Thereby, the underpants type diaper 1 can be made to follow each body type of a wearer's abdominal side and back side, and the fit property at the time of wear can be improved more.

The inelastic portion P is a region where the waist elastic members 21 (21a, 21b) of the abdominal member 11 and the back member 12 of the exterior sheet 10 overlap the absorbent member 30, and the width direction (left and right) of the absorbent member 30 Direction, X direction) is formed inside the both end edges (left and right end edges). In the region where the waistline elastic body 21 (21a, 21b) and the absorbing member 30 of the exterior sheet 10 overlap, a part having the tightening force of the above-described waistline elastic body 21 (21a, 21b) is also formed.
Here, when the non-elastic portion P extends to the outside of both end edges (left and right end edges) in the width direction of the absorbent member 30, the absorbent member 30 is separated from the wearer's body and causes leakage and the like. There is a fear. Therefore, as described above, the non-elastic portion P needs to be formed inside the both end edges (left and right end edges) in the width direction of the absorbing member 30, and the maximum width depends on the width dimension of the absorbing member 30. The width is limited and needs to be smaller than the width dimension (left-right width) of the absorbing member 30.

In the present embodiment, the inelastic portion P has a dimension in the width direction (left and right width) that gradually increases from the waist 4 (4a, 4b) side toward the left and right leg openings 13 and 14, and the left and right legs. The shape is a combination of a substantially triangular shape having a vertex on the waist side and a substantially rectangular shape so as to be constant at a position approaching the openings 13 and 14. Therefore, the waist elastic body 21 (21a, 21b) has a widthwise dimension (left-right width) in a region where the exterior sheet 10 and the absorbing member 30 overlap, and the left and right openings 13 from the waist 4 (4a, 4b) side. The length gradually decreases toward the 14th side, and does not exist when the widthwise dimension (left-right width) of the inelastic part P becomes constant. That is, the waistline elastic body 21 (21a, 21b) is formed on the substantially triangular outer side of the non-elastic portion P in the region where the exterior sheet 10 and the absorbing member 30 overlap.

Here, in order to prevent the pants-type diaper from slipping down, the waist elastic body 21 must be positioned at the upper part of the iliac projecting in the width direction on the pelvis. When tightening horizontally, the abdomen whose dimensions change the most depending on breathing and posture will continue to be tightened, which may increase discomfort. On the other hand, if the tightening is weakened, there is a case where a slip-off occurs, and it is difficult to set an optimum tension according to a different body shape depending on the wearer.
For this reason, the underpants type diaper 1 of the present invention is provided with the non-elastic portion P in a shape combining a substantially triangular shape having a vertex on the waist side and a substantially rectangular shape as described above, so that the abdominal portion without a skeleton is horizontal. The tightening of the direction can be suppressed, and the tension of the abdominal waist elastic body 21a can work in an oblique direction from the upper left and right iliac bones to the upper pubic bone along the pelvis. Also, on the back side, the circumference of the body from the waist to the hip gradually increases, and the tightening of the back waist elastic body 21b can be adjusted so that it can be supported with equal tension. . By these, the underpants type diaper 1 can suppress slipping off while realizing good fit.

Moreover, in this embodiment, the non-elastic part P is formed so that the upper end part (part by the side of the waist | lumbar part 4a, 4b) protrudes from the area | region where the exterior sheet 10 and the absorption member 30 overlap.
This is because pants-type diaper absorbent members generally absorb urine and other excrement, so that they cover a wide area from the urethral orifice to the vicinity of the anus. Some of them have been made longer to keep them from flowing out. However, if the length is too long, the abdomen and the back are uncomfortable, and the length is usually 400 to 600 mm in the case of an adult. On the other hand, the unfolded length of the pant-type diaper or pad holder (the length from the waist 4a of the abdominal member 11 to the waist 4b of the dorsal member 12) is about 100 to 500 mm longer for adults than the length of the absorbent member. Is formed.
Here, the appropriate vertical position of the inelastic portion P is preferably provided from the lower waist to the upper pubic bone on the abdominal side, and from the lower waist to the sciatic bone on the back side. Since it is not restricted, it does not necessarily overlap with the absorbing member, and in this embodiment, the upper end portion of the inelastic portion P protrudes as described above.

By forming the non-elastic portion P in the region where the exterior sheet 10 and the absorbing member 30 overlap, the waistline elastic body 21 (21a, 21b) is provided in the region around the body of the exterior sheet 10 where the absorbent member 30 does not overlap. Will exist. Thereby, the underpants type diaper 1 can suppress that the underpants type diaper 1 slips off from a wearer's body by the weight of the absorbing member 30 that has absorbed the liquid material.
In addition, a part of the waistline 4 (4a, 4b) side of the waist elastic body 21 (21a, 21b) is a region where the exterior sheet 10 and the absorbing member 30 overlap, and the substantially elastic outer side of the inelastic part P The direction of tightening of the pants-type diaper 1 with respect to the wearer's waist can be changed obliquely upward (see arrow A in FIG. 1). As a result, the trunk circumference of the pant-type diaper 1 bends in a curved shape so as to draw an arc from both sides of the waist part 4 toward the crotch part 5. The fitting property at the time of wearing of the diaper 1 and the slip-off suppressing effect can be further improved.

  Furthermore, by providing the non-elastic part P in the exterior sheet 10, the length of the elastic member in the width direction (left-right direction) as described above is such that the left and right leg openings 13, from the waist part 4 (4a, 4b) side, Since it gradually shortens as it is arranged toward the 14th side, the trunk circumference of the pants-side diaper 1 is viewed from the waist 4 (4a, 4b) side toward the left and right leg openings 13, 14 when viewed as a whole. As a result, the region where the tension of the waist elastic body 21 (21a, 21b) does not exist gradually increases. Therefore, the pants-type diaper 1 can be tightened to the wearer's abdomen and buttocks according to the shape of the body and weaken from the waist 4 (4a, 4b) side toward the left and right leg openings 13, 14 side. Also by this, the fitting property at the time of wear can be improved, and the slippage suppression effect of the pants-type diaper 1 can be improved.

  In the present embodiment, the non-elastic portion P is the waist elastic body 21 (21a, 21b) around the waist between the waist 4 (4a, 4b) of the exterior sheet 10 and the left and right leg openings 13, 14. ) Is not formed, but is not limited to this. For example, the non-elastic portion P is formed by forming the waist elastic body 21 (21a, 21b) on almost the entire surface from the waist 4 (4a, 4b) side of the exterior sheet 10 to the left and right leg openings 13, 14 side. The elastic member constituting the waist elastic body 21 (21a, 21b) may function as an elastic body only in a region corresponding to the non-elastic portion P, that is, by providing a state in which no tension is generated. .

From the above, the pants-type diaper 1 of the present embodiment has the following effects.
(1) The pants-type diaper 1 is gradually tightened as the waistline elastic body 21 (21a, 21b) moves from the waist 4 (4a, 4b) side of the exterior sheet 10 toward the left and right leg openings 13, 14 side. Since it forms so that it may become weak, the underpants type diaper 1 can be fitted to a wearer's abdomen and buttocks, and it can control that underpants type diaper 1 slips off.
(2) The pants-type diaper 1 is such that the elastic member of the waist elastic body 21 (21a, 21b) disposed on the left and right leg openings 13, 14 side is closer to the waist 4 (4a, 4b) than the elastic member. Since it is provided so that the tension is weaker than that of the elastic member disposed on the body, a change in tightening of the waistline elastic body 21 (21a, 21b) can be realized more specifically.

(3) The pants-type diaper 1 has a width dimension (left-right width) that gradually increases as the inelastic portion P moves from the waist 4 (4a, 4b) side to the left and right leg openings 13, 14 side. Therefore, it is possible to realize a change in tightening of the waistline elastic body 21 more specifically.
(4) As for the underpants type diaper 1, the non-elastic part P is an area | region where the exterior sheet 10 and the absorption member 30 overlap, Comprising: Both ends edge (left-right edge) of the width direction (left-right direction, X direction) of the absorption member 30 The waist elastic body 21 (21a, 21b) is partly formed in a region where the exterior sheet 10 and the absorbing member 30 overlap. Thereby, in the area | region where the absorption member 30 around the trunk | drum of the exterior sheet | seat 10 does not overlap, the trunk | circumference elastic body 21 (21a, 21b) will exist, and the underpants type diaper 1 is the absorption member 30 which absorbed the liquid body. It is possible to prevent the weight from falling off from the wearer's body.
Furthermore, a part of the waist part 4 (4a, 4b) side of the waist elastic body 21 (21a, 21b) is formed in a region where the exterior sheet 10 and the absorbent member 30 overlap, thereby preventing the waist of the wearer. The pants-type diaper 1 can be held in a state where the pants-type diaper 1 is pulled obliquely upward, and the effect of suppressing the slippage of the pants-type diaper 1 can be improved.

(Second Embodiment)
In the present embodiment, a pad holder that holds an absorbent article as a disposable underwear will be described as an example.
FIG. 4 is a development view of the pad holder of the second embodiment, and corresponds to FIG. FIG. 4A is a diagram illustrating an example of a pad holder according to the second embodiment, and FIG. 4B is a diagram illustrating another example of the pad holder according to the second embodiment. In FIG. 4, the width direction (left-right direction) of the developed pad holder is defined as the X direction (+ X is on the left side), and the vertical direction perpendicular to the X direction is defined as the Z direction. Here, in FIG. 4, the upward direction of the ventral member indicates the Z1 direction, and the upward direction of the back side member indicates the Z2 direction.
Note that, in the following description and drawings, the same reference numerals or the same reference numerals (last two digits) are given to the portions that perform the same functions as those of the first embodiment described above, and redundant descriptions are omitted as appropriate. To do.

The pad holder 101 of the second embodiment is mainly different from the pant-type diaper 1 of the first embodiment in that the absorbent member 30 is not provided.
The pad holder 101 is a pants-type holder that holds absorbent articles such as pads and napkins that absorb liquids such as urine and blood. The pad holder 101 can realize the same function as the pants-type diaper 1 of the first embodiment described above by wearing an absorbent article on the crotch portion 105 and wearing it.
As shown in FIG. 4, the pad holder 101 includes an exterior sheet 110 including a ventral member 111, a back member 112, a crotch portion 105, a left leg opening portion 113, a right leg opening portion 114, a joint portion 115, and the like. Is formed.

The belly side member 111 and the back side member 112 are provided around the waist of the exterior sheet 110, that is, from the waist 104 (104a, 104b) side of the exterior sheet 110 to the left leg opening 113 and the right leg opening 114 side. 121 (121a, 121b) is provided.
The waistline elastic body 121 (121a, 121b) extends from the waist 104 (104a, 104b) side of the pad holder 101 to the left and right leg openings 113, 114 side in the width direction (left-right direction, X direction) of the exterior sheet 110. It is comprised from the some thread-like elastic member arrange | positioned. Here, the tension of the elastic members constituting the waist elastic body 121 (121a, 121b) gradually becomes weaker from the waist 104 (104a, 104b) of the pad holder 101 toward the left and right leg openings 113, 114. It is formed as follows. That is, the elastic member arranged on the left and right leg openings 113, 114 side (lower end side) is more than the elastic member arranged on the waist portion 104 (104a, 104b) side (upper end side) than the elastic member. It is provided to reduce the tension. Specifically, the waistline elastic body 121 (121a, 121b) has left and right leg openings from the waist 104 (104a, 104b) when the elastic member is extended and joined between the outer sheet 110a and the inner sheet 110b. The elastic member is formed so as to gradually reduce the expansion ratio as it is arranged toward the portions 113 and 114.

In addition, around the trunk of the exterior sheet 110, a non-elastic part P (inside the one-dot chain line in FIG. 4) to which the tension of the waist elastic body 121 (121a, 121b) does not reach is the apex on the waist (104a, 104b) side. It is provided in a certain triangular shape . The inelastic part P is line symmetric with respect to the center line C1 in the width direction (left and right direction, X direction) of the exterior sheet 110, and includes the waist 104 (104a, 104b) and the left and right leg openings 113, 114. The width dimension (left-right width) is gradually increased from the waist 104 (104a, 104b) toward the left and right leg openings 113, 114.
Here, since the absorbent article may be arbitrarily selected and arranged by the wearer, the non-elastic part P is assumed in advance after assuming the width dimension (left and right width) of the absorbent article to be arranged. It is desirable to determine the dimension in the width direction (left-right direction, X direction). That is, it is desirable that the width dimension (left-right width) of the inelastic part P is formed to be equal to or less than the width dimension (left-right width) of the absorbent article assumed in advance. Thereby, when a wearer wears pad holder 101 in which an absorptive article is arranged, it can control that an absorptive article leaves from a wearer's body and a leak etc. occur.

In the present embodiment, the non-elastic portion P has a width direction (left-right width) dimension, and the left and right leg openings 113, 114 from the waist 104 (104a, 104b) side of each of the abdominal member 111 and the back member 112. It is formed in a substantially triangular shape having a vertex on the waist 104 (104a, 104b) side so as to gradually increase toward the side. Therefore, the waist elastic body 121 (121a, 121b) is formed on the substantially triangular outer side of the non-elastic portion P, and the dimension in the width direction (left-right direction, X direction) is the waist portion 104 (104a, 104b). ) Gradually decreases from the side toward the left and right leg openings 13, 14 side.

  As described above, a part of the waist elastic body 121 (121a, 121b) on the side of the waist 104 (104a, 104b) is formed on the outer side of the inelastic part P in a substantially triangular shape. The direction of tightening of the pad holder 101 with respect to can be changed obliquely upward. As a result, the waist of the pad holder 101 bends in a curved shape so as to draw an arc from both sides of the waist toward the crotch. It is possible to further improve the fit at the time of wearing and the slip-off suppressing effect.

  Further, by providing the non-elastic portion P in the exterior sheet 110, the length of the elastic member in the width direction is from the waist portion 104 (104a, 104b) side toward the left and right leg opening portions 113, 114 side as described above. Since it gradually shortens as it is arranged, the waist circumference of the pad holder 101 is gradually elastic as it goes from the waist 104 (104a, 104b) side to the left and right leg openings 113, 114 when viewed as a whole. The region where the tension of the body 121 (121a, 121b) does not exist is widened. Therefore, the pad holder 101 can change the tightening of the wearer's abdomen and buttocks according to the shape of the body, and can suppress the slipping of the pad holder 101 while realizing fit at the time of wearing. .

As described above, the pad holder 101 of the present embodiment is formed so that the tightening is gradually weakened from the waist 104 (104a, 104b) side of the exterior sheet 110 toward the left and right leg openings 113, 114. The pad holder 101 can be fitted to the wearer's abdomen and buttocks, and the pad holder 101 can be prevented from slipping down.
Further, in the pad holder 101, the elastic member of the waist elastic body 121 (121a, 121b) arranged on the left and right leg opening portions 113, 114 side is arranged on the waist 104 (104a, 104b) side than the elastic member. Since the tension is formed so as to be weaker than that of the elastic member, the change in tightening of the waistline elastic body 121 (121a, 121b) can be realized more specifically.
Further, the pad holder 101 is formed such that the width of the inelastic portion P gradually increases from the waist portion 104 (104a, 104b) side toward the left and right leg opening portions 113, 114. More specifically, the tightening change of the waist elastic body 121 (121a, 121b) can be realized.
The pad holder 101 is formed so that the width dimension of the inelastic portion P gradually increases as it goes from the waist 104 (104a, 104b) to the openings 113, 114. Accordingly, when the pad holder 101 is used in a state where the absorbent article is disposed in the crotch portion 105, the pad holder 101 is displaced from the wearer's body due to the weight of the absorbent article that has absorbed the liquid material. Can be suppressed.

  As shown in FIG. 4B, the pad holder 101 may have a three-dimensional gather 130 disposed on the crotch portion 105 thereof. In this case, the non-elastic portion P is a region where the exterior sheet 110 and the three-dimensional gather 130 overlap, similar to the absorbing member 30 of the first embodiment, and is formed on the inner side of both end edges in the width direction of the three-dimensional gather 130. Is desirable. By doing so, the pad holder 101 can have the same effect as the pants-type diaper 1 of the first embodiment.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made as in the modifications described later, and these are also included in the present invention. Within the technical scope. In addition, the effects described in the embodiments are merely a list of the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the embodiments. It should be noted that the above-described embodiment and modifications described later can be used in appropriate combination, but detailed description thereof is omitted.

FIG. 5 is a developed view of a modified underpants type diaper. Fig.5 (a) is a figure which shows the underpants type diaper of a deformation | transformation form (1), and FIG.5 (b) is a figure which shows the underpants type diaper of a deformation | transformation form (2). In FIG. 5, the width direction (left-right direction) of the developed pant-type diaper is the X direction (+ X is the left side), and the up-down direction perpendicular to the X direction is the Z direction. Here, in FIG. 5, the upward direction of the ventral member indicates the Z1 direction, and the upward direction of the back side member indicates the Z2 direction.
(Deformation)
(1) In 1st Embodiment, although the underpants type diaper 1 showed the example in which the abdominal member 11 and the back member 12 were connected integrally by the crotch part (crotch member) 5, it is limited to this. Not a thing. For example, as shown to Fig.5 (a), as for the underpants type diaper 1, the crotch part (crotch member) 5 provided with the abdominal member 11, the back member 12, and the absorption member 30 is each provided separately. Each may be joined by an adhesive such as hot melt.

(2) In each embodiment, although the left leg opening part and the right leg opening part showed the example formed asymmetrically with the abdominal side member and the back side member, it is not limited to this. For example, as shown in FIG. 5B, the left and right leg openings 13, 14 are formed in the same shape in the ventral member 11 and the dorsal member 12, that is, symmetrical with respect to the center line C2. You may do it. By doing in this way, the underpants type diaper without the front and back distinction can be formed, and a wearer's convenience can be improved.

(3) In 1st Embodiment, the non-elastic part P of the underpants type diaper 1 shows the example which is the shape which combined the triangle shape with a vertex on the waist | hip | lumbar part side, and a rectangular shape, and in 2nd Embodiment, the pad holder 101 is shown. Although an example in which the non-elastic part P is a triangular shape having a vertex on the waist side has been shown, the invention is not limited to this. The shape of the non-elastic portion P is preferably set appropriately in accordance with the tension and arrangement position of the outer elastic body around the waist, so that the width dimension (left-right width) is from the waist to the left and right leg openings. long as it is formed so as to gradually increase Te, for example, it may be formed in a parabolic shape or an arc shape with vertex to the waist side.

(4) In each embodiment, the waist elastic body gradually reduces the tension of the elastic member of the waist elastic body as it goes from the waist 4 (4a, 4b) to the left and right leg openings 13, 14. Although an example in which the expansion ratio of the elastic member is gradually lowered has been shown, the present invention is not limited to this.
For example, the material of the elastic member constituting the waist elastic body may be changed as the waist 4 (4a, 4b) moves to the left and right leg openings 13, 14 so that the tension is gradually reduced. Further, the thickness of the thread-like elastic member may be gradually reduced as it is arranged from the waist 4 (4a, 4b) toward the left and right leg openings 13, 14, and further, the method described above. May be combined as appropriate.

(5) In the first embodiment, the pants-type diaper 1 has shown an example in which the upper end portion of the non-elastic portion P protrudes from the region where the exterior sheet 10 and the absorbent member 30 overlap, but is limited to this. Instead, it may be included in a region where the exterior sheet 10 and the absorbing member 30 overlap.
(6) In each embodiment, the pants-type diaper 1 and the like gradually weaken the tightening of the waist elastic body 21 (21a, 21b) from the waist 4 (4a, 4b) toward the left and right leg openings 13, 14. In order to do this, the example in which the tension of the elastic member is gradually changed and the non-elastic part P is provided has been shown, but the present invention is not limited to this. For example, by providing only the non-elastic portion P without changing the tension of the elastic member, the waist elastic member 21 (21a, 21b) is tightened from the waist 4 (4a, 4b) to the left and right leg openings 13. , 14 may be gradually weakened toward 14.

1: pants-type diaper, 2: left leg opening hole, 3: right leg opening hole, 4 (4a, 4b), 104 (104a, 104b): waist, 5,105: crotch (crotch member), 10, 110 : Exterior sheet 11, 111: ventral member 12, 112: dorsal member 13, 113: left leg opening 14, 114: right leg opening 15, 115: joint, 20 (20a, 20b) ), 120 (120a, 120b): waist elastic body, 21 (21a, 21b), 121 (121a, 121b): waist elastic body, 22 (22a, 22b, 22c, 22d), 122 (122a, 122b, 122c, 122d): leg elastic body, 30: absorbent member, 31: absorbent body, 32: top sheet, 33: back sheet, 34: side elastic body, 36: crotch elastic body, 101: pad Rudder, P: Inelastic part

In order to solve the above-mentioned problems, the disposable underwear (1) of the present invention includes a ventral member (11), a back member (12), a crotch member (5) connecting the two members, and the ventral member. (11) and the left end portions (15a, 15b) and the right end portions (15c, 15d) of the back side member (12) are joined to each other, whereby the abdominal side member (11) and the back side member (12 ) And the crotch member (5) and the left and right leg openings (13, 14), and the ventral member (11) and the dorsal member (12) extend in the left-right direction. An elastic body around the waist which is disposed and joined in a state of being extended in the region above the left and right leg openings (13, 14) under the waists (4a, 4b) along the upper end edges of the two members. (21a, 21b) and the outer sheet (10) containing, or lumbar (4a) side of the ventral member (11) Wherein a crotch member lumbar (4b) is disposed toward the side provided are absorbing member (5) the back side member via (12) (30) and disposable underwear Ru wherein the waist elastic member (21a, 21b clamping force of beyond inelastic portion) (P) is, the waist (4a, 4b) side is formed in a shape including a triangular portion of the apex, the waist of the waist elastic member (21a, 21b) ( 4a, 4b) part is a region where the exterior sheet (10) and the absorbing member (30) overlap, and is formed outside the triangular portion of the inelastic part (P), and the waistline elasticity The tightening force of the body (21a, 21b) gradually decreases from the waist (4a, 4b) side toward the left and right leg openings (13, 14), and the disposable against the wearer's waist girth of underwear Orientation of the clamping is characterized by comprising a direction (A) toward the diagonally upward to the left and right from the center.
In the said aspect of this invention, the said absorption member (130) of another body is the waist part of the said back side member (112) through the said crotch member (105) from the waist part (104a) side of the said belly side member (111). It may be arranged and held over the (104b) side.
In the above aspect of the present invention, the left and right leg openings (13, 14) are formed in the same shape in the ventral member (11) and the dorsal member (12), and there is no distinction between the front and rear. But you can.
As mentioned above, in order to make an understanding easy, although the code | symbol corresponding to embodiment of this invention was attached | subjected and demonstrated, it is not limited to this. Note that the configuration described with reference numerals may be improved as appropriate, or at least a part thereof may be replaced with another configuration.

In order to solve the above-mentioned problems, the disposable underwear (1) of the present invention includes a ventral member (11), a back member (12), a crotch member (5) connecting the two members, and the ventral member. (11) and the left end portions (15a, 15b) and the right end portions (15c, 15d) of the back side member (12) are joined to each other, whereby the abdominal side member (11) and the back side member (12 ) And the crotch member (5) and the left and right leg openings (13, 14), and the ventral member (11) and the dorsal member (12) extend in the left-right direction. An elastic body around the waist which is disposed and joined in a state of being extended in the region above the left and right leg openings (13, 14) under the waists (4a, 4b) along the upper end edges of the two members. (21a, 21b) and an exterior sheet (10) comprising, inside of the outer sheet (10) Kihara member (11) of the waist (4a) from said side crotch member (5) through to the back side member (12) of the waist (4b) is disposed toward the side superposed with absorbing member to be joined (30) A non-elastic part (P) to which the tightening force of the waist elastic body (21a, 21b) does not reach a shape including a triangular part having a vertex on the waist part (4a, 4b) side. Formed, a part of the waist (4a, 4b) side of the waist elastic body (21a, 21b) is a region where the exterior sheet (10) and the absorbing member (30) are overlapped and joined , It is formed outside the triangular portion of the inelastic part (P), and the tightening force of the waist elastic body (21a, 21b) is such that the left and right leg openings (13, 14) from the waist (4a, 4b) side. As it goes to the side, it gradually weakens, Tightening direction of waistline of the disposable undergarment for use's waist characterized in that the orientation (A) toward the diagonally upward to the left and right from the center.
In the said aspect of this invention, the said absorption member (130) of another body is the waist part of the said back side member (112) through the said crotch member (105) from the waist part (104a) side of the said belly side member (111). It may be arranged and held over the (104b) side.
In the above aspect of the present invention, the left and right leg openings (13, 14) are formed in the same shape in the ventral member (11) and the dorsal member (12), and there is no distinction between the front and rear. But you can.
As mentioned above, in order to make an understanding easy, although the code | symbol corresponding to embodiment of this invention was attached | subjected and demonstrated, it is not limited to this. Note that the configuration described with reference numerals may be improved as appropriate, or at least a part thereof may be replaced with another configuration.

Claims (4)

A ventral member, a dorsal member, and a crotch member connecting the two members;
Left and right leg openings formed by the left and right ends of the abdominal member and the back member being joined to each other so as to be surrounded by the abdominal member, the back member, and the crotch member When,
An elastic body around the waist that extends in the left and right directions of the abdominal side member and the back side member, and is disposed in a region above the left and right leg openings under the waist part along each upper edge of the both members. And
Disposable underwear characterized in that at least a part of the waistline elastic body gradually decreases in tightening force from the waist side toward the left and right leg openings. The waistline elastic body includes a plurality of elastic members that extend in the left and right directions of the abdominal member and the back member, and are disposed in a region above the left and right leg openings under the waist. Has been
2. The tension member according to claim 1, wherein the elastic member disposed on the left and right leg opening side has a lower tension than the elastic member disposed on the waist side than the elastic member. Disposable underwear. The waist elastic body has a non-elastic portion that does not have a tightening force in at least a part of a region above the left and right leg openings under the waist.
The disposable underwear according to claim 1 or 2, wherein the inelastic portion includes a portion in which a lateral width gradually increases from the waist portion side toward the left and right leg opening portions. An absorbent member disposed from the ventral member to the back member through the crotch member;
The inelastic portion is formed inside both end edges in the width direction of the absorbing member to be arranged,
At least a part of a portion where the left and right width gradually increases from the waist side to the left and right leg opening portions of the inelastic portion is formed in a region where the waistline elastic body and the absorbing member overlap,
The disposable underwear according to claim 3, wherein a part of the waistline elastic body is formed on a waist side in a region where the waistline elastic body and the absorbing member overlap.

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