JP2011177427A - Diaper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a diaper including an outer member and an inner pad, capable of restricting width direction bulkiness of the inner pad at a crotch part, and raising a pair of raised parts on the inner pad at a high position. <P>SOLUTION: The disposable diaper 1 includes the outer member 10 that is a sheet, and the inner pad 20 bonded to a skin side surface of the outer member 10 by adhesive agent. A width direction distribution range of the adhesive agent is almost similar to an absorber 23, or is narrower than the absorber 23 at least at the crotch part. Therefore, both side parts of a pad body part 24 can be raised to the outer member 10, so that the pad body part 24 is shaped in an upward open recessed-shape. Width direction bulkiness of the pad body part 24 at the crotch part is thus restricted. The raised parts 25b on both side parts of the inner pad 10 can be raised at a higher position. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a diaper that absorbs body fluid excreted from a wearer.

  Conventionally, a diaper that absorbs body fluids such as urine excreted from a wearer is known. As an example of such a diaper, Patent Document 1 describes a diaper including an absorbent main body and an outer package disposed on the non-skin contact surface side of the absorbent main body. In patent document 1, the absorptive main body and the exterior body are adhere | attached with the adhesive agent. Moreover, in patent document 1, the 1st solid guard and the 2nd solid guard which extend in a longitudinal direction are formed in the left-right both sides of an absorptive main body.

Japanese Patent No. 4024197

  However, in patent document 1, the absorptive main body and the exterior body are mutually adhere | attached with the adhesive agent in the both sides of an absorptive main body. For this reason, in the structure of patent document 1, there exists a problem that an absorptive main body tends to be bulky in the width direction in the crotch part of a diaper. Moreover, in the structure of patent document 1, there also exists a problem that it is difficult to stand the 1st solid guard and the 2nd solid guard in a high position with respect to an exterior body.

  Then, this invention suppresses the bulkiness of the width direction of the interior pad in a crotch part, and raises a pair of standing part provided in the interior pad in a high position in the diaper which has an exterior body and an interior pad. The purpose is to provide a technology that can be used.

  In order to solve the above-described problems, the first invention of the present application includes a front body part addressed to the wearer's abdominal surface, a back body part addressed to the wearer's buttocks, the front body part, and the back body part. A diaper having a narrow crotch connecting the exterior body and an interior pad bonded to the skin side surface of the exterior body via an adhesive, the interior pad being an absorbent body And a pair of upright portions provided on both sides of the pad main body portion so as to be able to stand on the skin side surface of the pad main body portion, and at least in the crotch portion, the bonding The distribution region in the width direction of the agent is substantially the same as the absorber or narrower than the absorber.

  2nd invention of this application is a diaper of 1st invention, Comprising: In the said crotch part, the said pad main-body part is located in the width direction outer side of the 1st area | region where the absorber is arrange | positioned, and the said 1st area | region. And two regions.

  3rd invention of this application is a diaper of 1st invention or 2nd invention, Comprising: The said absorber has the shape constricted in the width direction in the said crotch part.

  4th invention of this application is a diaper in any one of 1st invention from 3rd invention, Comprising: The said exterior body has the elastic member for leg circumference | surroundings which generate | occur | produces shrinkage force around a wearer's leg, At a position where the leg elastic member and the adhesive distribution region partially overlap and overlap with the leg elastic member, the width distribution region of the adhesive is substantially the same as the absorber or Narrower than the absorber.

  5th invention of this application is a diaper in any one of 1st invention from 4th invention, Comprising: The said exterior body has the elastic member for waist circumferences which generate | occur | produces shrinkage force around a wearer's waist, The waist elastic member and the adhesive distribution region do not overlap.

  6th invention of this application is a diaper in any one of 1st invention from 4th invention, Comprising: The said exterior body has the elastic member for trunk | drums which generate | occur | produces shrinkage force around a wearer's trunk | drum, The waist elastic member and the adhesive distribution region partially overlap each other, and in the position where the waist elastic member overlaps the waist elastic member, the adhesive width distribution region is substantially the same as the absorber or Narrower than the absorber.

  7th invention of this application is a diaper in any one from 1st invention to 6th invention, Comprising: The both ends of the width direction of the said front body part, and the both ends of the width direction of the said back body part are joined. It has a pants-like outer shape.

  According to the first to seventh inventions of the present application, the both sides of the pad main body can be raised with respect to the exterior body, and the pad main body can be formed into a concave shape opened upward. Thereby, the bulk of the pad main body portion in the width direction in the crotch portion is suppressed. Further, by raising both side portions of the pad main body portion, the pair of standing portions can be raised at a higher position.

  In particular, according to the second invention of the present application, the second region of the pad main body can be raised. Since the second region has lower rigidity than the first region, it stands up well.

  In particular, according to the third invention of the present application, since the absorbent body is constricted in the crotch, the bulk of the absorbent body in the wearer's crotch can be suppressed. Further, by raising the standing part at a high position, the body fluid of the wearer can be guided well to the constricted part of the absorber.

  In particular, according to the fourth invention of the present application, it is possible to suppress a decrease in the contractile force of the leg-around elastic member due to the adhesive.

  In particular, according to the fifth invention of the present application, it is possible to suppress a decrease in the contractile force of the elastic member for the waist due to the adhesive.

  In particular, according to the sixth invention of the present application, it is possible to suppress a decrease in the shrinkage force of the elastic member for the waist due to the adhesive.

It is a perspective view of a disposable diaper. It is the top view which looked at the disposable diaper from the skin side in the unfolded state. It is sectional drawing which looked at the disposable diaper from the III-III position in FIG. It is the top view which looked at the disposable diaper which concerns on a modification from the skin side in the expanded state. It is the top view which looked at the disposable diaper which concerns on a modification from the skin side in the expanded state. It is the top view which looked at the disposable diaper which concerns on a modification from the skin side in the expanded state.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

<1. Disposable diaper structure>
FIG. 1 is a perspective view of a disposable diaper 1 according to an embodiment of the present invention. FIG. 2 is a plan view of the disposable diaper 1 as viewed from the skin side in a developed state. Moreover, FIG. 3 is sectional drawing which looked at the disposable diaper 1 from the III-III position in FIG.

  This disposable diaper 1 has a narrow crotch that connects a front body part 1a addressed to the wearer's abdomen, a back body part 1b addressed to the wearer's buttocks, and the front body part 1a and the back body part 1b. A pants-type diaper having a portion 1c. Hereinafter, a direction in which the front body part 1a, the crotch part 1c, and the back body part 1b are connected is referred to as a “longitudinal direction”, and a direction perpendicular to the longitudinal direction and along the surface of the disposable diaper 1 is referred to as a “width direction”.

  As shown in FIGS. 1 to 3, the disposable diaper 1 includes a sheet-like exterior body 10 extending over the front body part 1 a, the crotch part 1 c, and the back body part 1 b, and the exterior body 10 in the vicinity of the crotch part 1 c. And an interior pad 20 joined to the skin side surface.

  The exterior body 10 includes a pair of exterior sheets 11 and 12 and a plurality of elastic members 13a, 13b, 14a, and 14b interposed between the sheets 11 and 12. Each of the pair of exterior sheets 11 and 12 extends in the longitudinal direction from the front body part 1a to the back body part 1b, and has a shape constricted in the width direction at the crotch part 1c located in the middle. Moreover, the outer surface of the exterior sheet 11 disposed on the skin side and the skin side surface of the exterior sheet 12 disposed on the outer side are joined by an adhesive (not shown).

  The pair of exterior sheets 11 and 12 are made of, for example, a plastic film. Further, the pair of exterior sheets 11 and 12 may be constituted by a water-repellent nonwoven fabric using hydrophobic fibers (polypropylene, polyethylene, polyester, polyamide, nylon, etc.).

  As shown in FIG. 1, the both side parts of the front body part 1a and the both side parts of the back body part 1b are joined together. Specifically, in the vicinity of the left and right waists of the wearer, the side portions of the exterior body 10 are joined by thermal welding or ultrasonic welding. Thereby, in the disposable diaper 1, two leg openings 1d and 1e through which the wearer's leg passes and one trunk opening 1f through which the wearer's trunk passes are formed.

  A plurality of leg-around elastic members 13a and 13b are provided before and after the leg openings 1d and 1e. For example, polyurethane rubber or natural rubber is used for the leg-around elastic members 13a and 13b. The leg-around elastic member 13a extends along the front edge of the pair of leg openings 1d, 1e, and extends between the leg portions so as to cross the crotch portion 1c in the width direction. The leg elastic member 13b extends along the rear edge of the pair of leg openings 1d, 1e, and extends so as to cross the crotch 1c in the width direction therebetween. The leg-hole elastic members 13a and 13b are fixed between the two exterior sheets 11 and 12 with an adhesive (not shown).

  At the time of manufacturing the disposable diaper 1, the leg-hole elastic members 13a and 13b are attached between the exterior sheets 11 and 12 in a state of being extended more than the natural length. For this reason, the leg elastic members 13a and 13b generate an elastic force that contracts the edges of the leg openings 1d and 1e. When the wearer wears the disposable diaper 1, the edges of the leg openings 1d, 1e fit around the leg of the wearer due to the contraction force of the leg elastic members 13a, 13b.

  The front body portion 1a and the back body portion 1b are provided with a plurality of waist elastic members 14a, 14b extending in the width direction. For example, polyurethane rubber or natural rubber is used for the waist elastic members 14a and 14b. The waist elastic members 14a and 14b are fixed between the two exterior sheets 11 and 12 with an adhesive (not shown).

  When the disposable diaper 1 is manufactured, the waist elastic members 14a and 14b are attached between the exterior sheets 11 and 12 in a state where the elastic members 14a and 14b are extended from the natural length. For this reason, the waist elastic members 14a and 14b generate an elastic force that contracts the front body portion 1a and the back body portion 1b in the width direction. When the wearer wears the disposable diaper 1, the front body part 1a and the back body part 1b fit around the wearer's torso due to the contraction force of the waist elastic members 14a, 14b.

  The interior pad 20 is a part that is assigned to the wearer's crotch and absorbs urine excreted from the wearer. The interior pad 20 includes a liquid-permeable top sheet 21 disposed on the skin side, a liquid-impermeable back sheet 22 disposed on the outside, and an absorber 23 interposed between the sheets 21 and 22; It has the pad main-body part 24 provided with. Urine excreted from the wearer of the disposable diaper 1 passes through the top sheet 21, but does not penetrate outside from the back sheet 22, and is absorbed and held by the absorber 23 between the top sheet 21 and the back sheet 22. Is done.

  The top sheet 21 is made of, for example, a non-woven fabric that is made liquid permeable by treating the surface of hydrophobic fibers (polypropylene, polyethylene, polyester, polyamide, nylon, etc.) with a surfactant. The top sheet 21 may be made of a nonwoven fabric using hydrophilic fibers (cellulose, rayon, cotton, etc.).

  The back sheet 22 is made of, for example, a plastic film. The back sheet 22 may be constituted by a water-repellent nonwoven fabric using hydrophobic fibers (polypropylene, polyethylene, polyester, polyamide, nylon, etc.).

  The absorber 23 is fixed between the top sheet 21 and the back sheet 22 with an adhesive (not shown). The absorbent body 23 is, for example, a lump obtained by mixing hydrophilic fibers such as pulverized pulp fibers and cellulose fibers with granular superabsorbent polymer (SAP), a paper sheet such as tissue paper, or liquid permeability. It is coated with a non-woven sheet. The absorber 23 may be formed by forming only a superabsorbent polymer into a sheet shape.

  As shown in FIG. 2, the absorber 23 has a shape constricted in the width direction at the crotch portion 1c. Thereby, the bulkiness of the absorber 23 in a wearer's crotch is suppressed, and a wearer can operate a leg more freely.

  Moreover, the interior pad 20 has a pair of side seats 25 for preventing side leakage of urine. The pair of side sheets 25 is made of, for example, a water-repellent nonwoven fabric using hydrophobic fibers (polypropylene, polyethylene, etc.). The pair of side sheets 25 extends in the longitudinal direction on both sides of the pad main body 24.

  The side sheet 25 includes a base end portion 25 a joined to the pad main body portion 24, and an upright portion 25 b provided so as to be able to stand on the skin side surface of the pad main body portion 24. The base end portion 25a is joined to the skin side surface of the top sheet 21 with an adhesive (not shown). As for the standing part 25b, only the both ends of the longitudinal direction are joined to the skin side surface of the base end part 25a with the adhesive agent (illustration omitted). The standing portion 25b is provided with a plurality of standing elastic members 25c extending in the longitudinal direction. For the standing elastic member 25c, for example, polyurethane rubber or natural rubber is used.

  At the time of manufacturing the disposable diaper 1, the elastic member 25c for standing is attached to the standing portion 25b of the side seat 25 in a state where it is extended from the natural length. For this reason, the elastic member for standing 25c generates an elastic force that contracts the standing portion 25b of the side seat 25 in the longitudinal direction.

  In addition, the pad main body 24 is bonded to the skin side surface of the exterior sheet 11 with an adhesive 30. For the adhesive 30, for example, a hot melt type adhesive is used. The adhesive 30 is provided in a band-like region (a region indicated by broken cross-hatching in FIG. 2) extending in the longitudinal direction between the exterior sheet 11 and the pad main body 24.

  As shown in FIG. 2, the adhesive 30 is distributed on the inner side in the width direction than the constricted portion of the absorber 23. That is, the distribution region in the width direction of the adhesive 30 is narrower than the region in the width direction in which the absorber 23 exists in the crotch portion 1c. Of the pad main body 24, the portion on the outer side in the width direction from the adhesive 30 is not joined to the exterior body 10, and can stand up with respect to the skin side surface of the exterior body 10.

  When the standing elastic member 25c contracts, as shown in FIG. 3, the portion on the outer side in the width direction from the adhesive 30 of the pad main body 24 and the standing portion 25b of the side sheet 25 are on the skin side surface of the exterior body 10. On the other hand, I stand up. At this time, since the pad main body 24 has a concave shape opened upward, the pad body 24 is prevented from being bulky in the width direction. In addition, the base end portion 25 a of the side sheet 25 is also raised with respect to the exterior body 10. For this reason, the standing portion 25b of the side seat 25 stands at a higher position than when the entire pad main body portion 24 is lying down.

  As described above, the interior pad 20 forms a pair of weirs constituted by the side portions of the pad main body portion 24 and the side seats 25. Thereby, the leakage of the urine excreted from the wearer to the side is prevented. The standing side sheet 25 also plays a role of guiding the urine excreted from the wearer to the constricted portion of the absorber 23.

  As shown in FIG. 3, the pad main body 24 includes, in the crotch portion 1c, a first region 24a in which the absorber 23 is disposed, a second region 24b located on the outer side in the width direction of the first region 24a, Have The rigidity of the second region 24b is lower than the rigidity of the first region 24a having the absorber 23. For this reason, the second region 24 b stands up particularly well with respect to the exterior body 10.

  In the present embodiment, the leg elastic members 13a and 13b extend across the width direction at the lower position of the pad main body 24. Therefore, the leg elastic members 13a and 13b and the distribution region of the adhesive 30 partially overlap. However, the distribution region in the width direction of the adhesive 30 in the crotch portion 1 c is narrower than the absorber 23. For this reason, at the edges of the leg openings 1d and 1e, the contraction force of the leg elastic members 13a and 13b due to the adhesive 30 is unlikely to decrease. Therefore, the edges of the leg openings 1d and 1e fit well around the wearer's leg.

  Further, as shown in FIG. 2, in this embodiment, the waistline elastic members 14 a and 14 b and the distribution region of the adhesive 30 do not overlap. For this reason, the shrinkage force of the waist elastic members 14a and 14b due to the adhesive 30 is unlikely to decrease. Therefore, the edge of the torso opening 1f fits well around the wearer's torso.

  The pants-type disposable diaper 1 as in this embodiment is particularly suitable for a walkable wearer. For this reason, in order to improve the freedom degree of movement of a wearer's leg, it is preferable to design so that the width | variety of the crotch part 1c at the time of wear may become narrow. However, when the width of the crotch portion 1c is simply designed to be narrow, the width of the side seat 25 is also designed to be narrow accordingly. If it does so, it will become difficult to stand the side seat 25 high. In this regard, the disposable diaper 1 of the present embodiment has a concave shape in which the pad main body portion 24 is opened upward, thereby suppressing the bulkiness of the pad main body portion 24 in the width direction, and raising the standing portion 25b. It is possible to realize both of them.

<2. Modification>
Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment.

  In the above embodiment, the adhesive 30 has a certain width from one end in the longitudinal direction to the other end. However, for example, as shown in FIG. 4, the width of the adhesive 30 may be widened at both ends in the longitudinal direction. The distribution region in the width direction of the adhesive 30 may be substantially the same as or narrower than the absorber 23 at least in the crotch portion 1c.

  However, if the width of the adhesive 30 is constant as in the above-described embodiment, mutual restraint between the exterior body 10 and the interior pad 20 is suppressed even at both ends in the longitudinal direction. For this reason, it can be said that the above-mentioned embodiment tends to bend the interior pad 20 back and forth in an arcuate shape, and more easily raise the standing portion 25b.

  Further, in the above embodiment, the waistline elastic members 14 a and 14 b and the distribution region of the adhesive 30 do not overlap. However, for example, as shown in FIG. 5, the waistline elastic members 14 a and 14 b and the distribution region of the adhesive 30 may partially overlap. In this case, the distribution region in the width direction of the adhesive 30 is substantially the same as that of the absorber 23 even in the vicinity of both ends in the longitudinal direction (that is, the position where the waistline elastic members 14a and 14b and the adhesive 30 overlap). Or narrower than the absorber 23. If it does so, the fall of the contractive force of the elastic members 14a and 14b for the waist around by the adhesive 30 can be suppressed.

  Moreover, in said embodiment, the adhesive agent 30 was continuously apply | coated to the strip | belt-shaped area | region. However, the adhesive 30 may be distributed intermittently. For example, as shown in FIG. 6, the adhesive 30 may be intermittently applied in the width direction and distributed in a stripe shape as a whole.

  Further, in the above-described embodiment, the standing portion 25 b is configured by a sheet (side sheet 25) different from the sheets (the top sheet 21 and the back sheet 22) that configure the pad main body portion 24. However, the standing part may be a part of a sheet (for example, a back sheet) that constitutes the pad main body part.

  Moreover, in said embodiment, the 2nd area | region 24b in which the absorber 23 is not arrange | positioned among the pad main-body parts 24 was mainly started. However, both side portions of the first region 24 a having the absorber 23 may also rise with respect to the exterior body 10.

  Moreover, said embodiment demonstrated the underpants type disposable diaper 1 with which the both sides of the front body part 1a and the both sides of the back body part 1b were joined. However, the diaper of the present invention may be another type of diaper having an exterior body and an interior pad. For example, the front body part and the back body part are attached to the wearer by fastening tape (for example, hook-and-loop fasteners) that is not joined in advance to both sides of the front body part and both side parts of the back body part. It may be a so-called tape-type disposable diaper that is fixed around the waist.

  Moreover, the reusable diaper which is not disposable may be sufficient as the diaper of this invention. Moreover, the diaper of the present invention may be intended for an adult or may be intended for an infant. The diaper of the present invention may absorb not only urine but also other body fluids such as loose stool.

  Moreover, you may combine suitably each element which appears in the above embodiment and modification.

DESCRIPTION OF SYMBOLS 1 Disposable diaper 1a Front body part 1b Rear body part 1c Crotch part 1d, 1e Leg opening part 1f Trunk opening part 10 Exterior body 11,12 Exterior sheet | seat 13a, 13b Elastic member 14a, 14b Elastic member 20 for waistline Interior pad 21 Top sheet 22 Back sheet 23 Absorber 24 Pad main body 24a First region 24b Second region 25 Side sheet 25a Base end portion 25b Standing portion 25c Elastic member 30 for standing 30 Adhesive

Claims (7)

A diaper having a front body part addressed to the wearer's abdomen, a back body part addressed to the wearer's buttocks, and a narrow crotch part connecting the front body part and the back body part. And
An exterior body,
An interior pad joined to the skin side of the exterior body via an adhesive;
With
The interior pad is
A pad body having an absorber;
On both sides of the pad body part, a pair of standing parts provided so as to be able to stand against the skin side surface of the pad body part,
Have
A diaper in which the distribution region in the width direction of the adhesive is substantially the same as or narrower than the absorbent body at least in the crotch portion. A diaper according to claim 1,
In the crotch portion, the pad main body portion is
A first region where the absorber is disposed;
A second region located outside in the width direction of the first region;
Diapers with. A diaper according to claim 1 or claim 2,
The said absorber is a diaper which has the shape constricted in the width direction in the said crotch part. A diaper according to any one of claims 1 to 3,
The exterior body is
Having an elastic member for leg circumference that generates contraction force around the leg of the wearer;
The leg elastic member and the adhesive distribution region partially overlap,
A diaper in which the distribution region in the width direction of the adhesive is substantially the same as or narrower than the absorber at a position overlapping the leg elastic member. A diaper according to any one of claims 1 to 4,
The exterior body is
An elastic member for the waist that generates contraction force around the wearer's waist,
A diaper in which the waist elastic member and the adhesive distribution region do not overlap. A diaper according to any one of claims 1 to 4,
The exterior body is
An elastic member for the waist that generates contraction force around the wearer's waist,
The waist elastic member and the adhesive distribution region partially overlap,
A diaper in which the distribution region in the width direction of the adhesive is substantially the same as or narrower than the absorber at a position overlapping the waist elastic member. A diaper according to any one of claims 1 to 6,
The diaper which the both ends of the width direction of the said front body part and the both ends of the width direction of the said back body part are joined, and has a pants-like external shape.

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