JP2013123548A - Underpants-type absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underpants-type absorbent article having improved usability by facilitating a grasp of a waist opening part of a diaper.SOLUTION: The diaper 1A includes an external body 2 and an absorbent body 3. Both side edges 6a of a belly side part A and both side edges 6b of a back side part B of the external body 2 are joined together to form side seal parts 5, a waist opening part WO, and a pair of leg openings LO. In the diaper 1A, there is intermittently disposed a plurality of elastic members 23, in the belly side part A and the back side part B in a Y direction, the elastic members being disposed in a state of extending in the circumferential direction of the waist opening WO. The belly side part A and the back side part B include turndown parts 4a and 4b formed by being outward turned down with the peripheral edge of the waist opening part WO including partial elastic members 233 of the plurality of elastic members 23. Both side edge portions 4a1 and 4b1 of the turndown parts 4a and 4b are fixed by the side seal parts 5.

Description

  The present invention relates to a pants-type absorbent article such as a disposable diaper.

  As a conventional pants-type absorbent article, a pants-type disposable diaper in which a waist opening and a pair of leg openings are formed is known. The pants-type disposable diaper, which is such a pants-type absorbent article, is used by the user himself / herself or worn by the user's carer or caregiver.

  For example, Patent Document 1 discloses that, from the viewpoint of easy attachment / detachment, a pair of stretchable bodies, which are arranged to extend outward in the longitudinal direction of the absorbent main body after the diaper is mounted, are folded back on the absorbent main body. Disposable diapers used are described. In addition, Patent Document 2 provides a wrapping sheet that extends from the edge of the waistline opening toward the crotch region on the outer surface of any one of the front and back waistlines from the viewpoint of disposal in a sanitary and preferable state after use, A pants-type disposable diaper is described in which a pocket that opens downward from above is formed between the wrapping sheet and the outer surface of the diaper.

JP-A-10-52456 JP 2004-223011 A

  However, the disposable diaper described in Patent Document 1 is a state in which the stretchable body is not folded back but extended outward in the longitudinal direction before use, and the wearer's skin and diaper are used to grasp the stretchable body. It is difficult to grasp the hand between the opening and the hand. Further, even when the stretchable body is folded on the absorbent main body during use, the folded body may be released and may be difficult to grasp.

  Further, Patent Document 2 does not describe anything about the ease of putting on a diaper. Further, since the wrapping sheet provided in the disposable diaper described in Patent Document 2 is not provided with an elastic member, it is difficult to maintain the free end portion of the wrapping sheet in a fixed state, and it is also difficult to grasp it.

  Therefore, the subject of this invention is providing the underpants type absorbent article which a user himself, a caregiver of a user, and a caregiver can grasp the waist part opening part of a diaper easily at the time of diaper use, and a usability | use_condition improves. .

  The present invention relates to an exterior body having an abdominal side portion disposed on the stomach side of the wearer when worn, a back side portion disposed on the back side of the wearer when worn, and an absorbent body fixed to the inside of the exterior body And a pair of side seal portions, a waist opening portion, and a pair of leg openings are formed by joining both side edges of the abdominal side portion and the back side portion. In the pant-type absorbent article, each of the abdomen side part and the dorsal side part has an elastic member arranged in a stretched state in the circumferential direction of the waist opening, and the longitudinal direction of the pant-type wear article Are arranged intermittently, and at least one of the ventral side portion and the dorsal side portion has a peripheral end portion along the periphery of the waist opening part of the plurality of elastic members. A folded portion formed by folding outward with the elastic member included And it is, the folded portion has its both side edges, there is provided a pants-type wearing article being secured by a pair of the side seal portion.

  According to the pants-type absorbent article of the present invention, it is easy to grip the waist opening of the diaper, and the usability is improved.

FIG. 1 is a perspective view of a pants-type disposable diaper according to the first embodiment of the present invention. FIG. 2 is a plan view of the pants-type disposable diaper shown in FIG. 1 as viewed from the top sheet side in an expanded state. 3 is a cross-sectional view taken along the line II of FIG. FIG. 4 is a sectional view in the thickness direction of a pants-type disposable diaper according to the second embodiment of the present invention (corresponding to FIG. 3). FIG. 5: is sectional drawing of the thickness direction of the underpants type disposable diaper which is 3rd Embodiment of this invention (FIG. 3 equivalent view). FIG. 6 is a sectional view in the thickness direction of a pants-type disposable diaper according to a fourth embodiment of the present invention (corresponding to FIG. 3).

  Hereinafter, the underpants type absorbent article of the present invention will be described based on the preferred first embodiment with reference to FIGS.

The pants-type disposable diaper 1A of the first embodiment (hereinafter also referred to as “diaper 1A”) is, as shown in FIG. 1, an abdominal side portion A disposed on the abdomen side of the wearer when worn, and a wearer when worn. The outer body 2 having the back side portion B disposed on the back side of the body and the rectangular absorbent main body 3 having the absorbent body 33 fixed inside the outer body 2 are provided on both sides of the ventral side portion A. The edge portions 2a, 2a and the side edge portions 2b, 2b of the back side portion B are joined to form a pair of side seal portions 5, 5, a waist opening WO and a pair of leg openings LO, LO. .
The diaper 1A is formed symmetrically with respect to the center line CL as shown in FIGS.

  To describe the diaper 1A of the first embodiment in detail, the exterior body 2 provided in the diaper 1A constitutes the appearance of the diaper 1A as shown in FIG. 1, and as shown in FIG. In the longitudinal direction (hereinafter referred to as “Y direction”. Y direction: a direction parallel to the center line CL), the abdominal side A disposed on the abdomen side of the wearer when worn, and the back side of the wearer It has a crotch part C which is located between the back side part B and the abdominal side part A and the back side part B which are arranged on the wearer's crotch part. The lateral direction of the diaper 1A is a direction orthogonal to the center line CL (hereinafter referred to as “X direction”). Moreover, the thickness direction of the diaper 1A is shown as the Z direction.

  As shown in FIG. 2, the exterior body 2 is bound inward in the central portion in the vertical direction (Y direction). In the diaper 1A, the inner surfaces of both side edges 2a, 2a on the ventral side A side of the outer package 2 and the inner surfaces of both side edges 2b, 2b on the back side B of the outer package 2 are overlapped with each other, A pair of side seal portions 5 and 5 are formed, and a waist opening WO and a pair of leg openings LO and LO shown in FIG. 1 are formed.

  As shown in FIGS. 1 and 2, an absorbent main body 3 is fixed inside the exterior body 2. As shown in FIG. 2, the absorbent main body 3 has a substantially vertically long rectangular shape, a liquid-permeable top sheet 31, a liquid-impermeable (including water-repellent) back sheet 32, both sheets 31, The absorber 33 interposed between 32 is provided. In the diaper 1A, the absorber 33 has an hourglass shape in which a central portion in the longitudinal direction (Y direction) is bound inward. As shown in FIG. 2, side cuffs 34 and 34 made of a liquid-impermeable or water-repellent and breathable material are provided on both sides along the longitudinal direction (Y direction) of the absorbent main body 3. It has been. In the vicinity of the free end of each side cuff 34, a three-dimensional gather forming elastic member (not shown) is arranged in a state of extending in the vertical direction (Y direction). When the diaper is worn, the free end portion of the side cuff 34 rises due to contraction of the elastic member for forming a three-dimensional gather (not shown), so that a so-called three-dimensional gather is formed, and the outflow of body fluid in the lateral direction (X direction) is prevented. .

  In the pant-type wearing article of the present invention, elastic members 23 (231, 233) arranged in a stretched state in the circumferential direction of the waist opening WO are respectively worn on the abdominal side A and the back side B. A plurality of articles are intermittently arranged in the longitudinal direction (Y direction) of the article. The diaper 1 </ b> A will be described. As shown in FIG. 2, the outer package 2 of the diaper 1 </ b> A includes an inner layer sheet 21 to which the absorbent main body 3 is directly fixed, and an outer layer sheet 22 disposed on the outer surface side of the inner layer sheet 21. The elastic member 23 disposed between the inner layer sheet 21 and the outer layer sheet 22 and extending in the circumferential direction of the waist opening WO, and the outer member 2 disposed between the inner layer sheet 21 and the outer layer sheet 22. Leg elastic member 24 arranged in an extended state along the constriction. By arranging the leg elastic member 43, a pair of annular leg elastic regions (leg gathers) is formed in the outer package 2 of the diaper 1A. As shown in FIG. 2, the circumferential direction of the waist opening WO is the same as the lateral direction (X direction) when the diaper 1A is expanded and extended.

  In the pant-type wearing article of the present invention, at least one of the abdominal side portion A and the back side portion B is a part of the elastic member 233 having a plurality of elastic end portions along the peripheral edge of the waist opening WO. The folded portion 4 (4a, 4b) is formed to be folded outward in a state including The diaper 1A will be described. As shown in FIG. 3, the outer package 2 of the diaper 1A is an outer side in a state in which the peripheral end portion along the periphery of the waist opening WO in the ventral side A includes a part of the elastic member 233. The peripheral end portion along the periphery of the waist opening WO in the back side portion B is also formed by being folded outward with a part of the elastic member 233. A folded portion 4b is provided. In the diaper 1A, as shown in FIG. 3, the folded width (W1) of the folded portion 4a of the ventral side A and the folded width (W2) of the folded portion 4b of the back side B are the same. Here, the folded width means the length in the vertical direction (Y direction) of the folded portions 4a and 4b.

  As shown in FIG. 1, the folded-back portions 4 a and 4 b have both side edge portions 4 a 1 and 4 b 1 fixed by a pair of side seal portions 5. Specifically, in the diaper 1A, the side edges 2a, 2a and the dorsal side of the abdominal side A with the peripheral ends of the waist opening WO of each of the abdominal side A and the back side B folded back. The side edge portions 2b, 2b of the portion B are joined simultaneously to form a pair of side seal portions 5, 5. Therefore, in the diaper 1A, as shown in FIG. 1, the side edge portion 4a1 along the longitudinal direction (Y direction) of the folded portion 4a of the ventral side portion A is fixed by the side seal portion 5, and the back side portion A side edge portion 4 b 1 along the vertical direction (Y direction) of the folded portion 4 b of B is fixed by the side seal portion 5. In the diaper 1A, as described above, the pair of side seal portions 5 and 5 are formed by being joined together in the folded state, but the side edges 2a and 2a and the back side of the ventral side A are formed. After the pair of side seal portions 5 and 5 are formed by joining the side edge portions 2b and 2b of the portion B, the side edge portions 4a1 and 4b1 of the folded portions 4a and 4b of the ventral side portion A and the back side portion B are further You may fix separately in the side seal part 5. FIG.

  The diaper 1A will be further described. In the abdominal side A and the back side B, as shown in FIG. 3, the inner layer sheet 21 constituting the exterior body 2 of the diaper 1A is disposed on the peripheral edge d1 of the opening of the waist opening WO. Along the outer opening WO, the outer opening is folded in half and extends to the tips of the folded portions 4a and 4b. Moreover, in the abdominal side A and the back side B, as shown in FIG. 3, the outer layer sheet 22 constituting the exterior body 2 of the diaper 1A has a waist opening along the peripheral edge d1 of the opening of the waist opening WO. It is folded in half from the WO, that is, the outer layer sheets 22 face each other, and extends to the tips of the folded portions 4a and 4b, and further has a length extending in the vertical direction (Y direction). ing. The extended region of the outer layer sheet 22 that extends beyond the tips of the folded portions 4a and 4b is folded back so as to wrap the tip of the inner layer sheet 21 at the tips of the folded portions 4a and 4b, and further the opening of the waist opening WO. It extends beyond the peripheral edge d1, is folded back inside the waist opening WO at the peripheral edge d1, extends to a position covering the end 33d1 in the longitudinal direction (Y direction) of the absorbent body 33 of the absorbent main body 3, and adhesive ( (Not shown).

In the diaper 1A, the folded portions 4a and 4b are formed between the peripheral edge d1 of the waist opening and the longitudinal direction (Y direction) end 33d1 of the absorber 33, as shown in FIG.
The ratio (W1 or W2 / full length) of the folded widths (W1, W2) of the folded portions 4a, 4b to the total length in the longitudinal direction (Y direction) of the diaper 1A is 10% to 30% from the viewpoint of making the folded portion easy to pick. It is preferable that it is 15%-20%.

  The elastic member 23 disposed on each of the ventral side A and the back side B will be described in detail. The elastic member 23 is an elastic member disposed on the ventral side A or the back side B other than the folded portions 4a and 4b. That is, a plurality of waist elastic members 231 intermittently disposed outward in the longitudinal direction (Y direction) from the absorbent main body 3, and intermittently disposed below the waist elastic member 231 in the longitudinal direction (Y direction). And a plurality of waistline elastic members 232 and elastic members 233 disposed on the folded portions 4a and 4b. A waist elastic member 231 and a waistline elastic member 232 are disposed between the inner layer sheet 21 and the outer layer sheet 22 constituting the outer package 2, so that the outer package 2 of the diaper 1A has a waist elastic region (waist gather). In addition, a waistline elastic region (a waistline gather) is formed. As shown in FIGS. 1 and 2, the waistline elastic member 232 is preferably finely divided at the position where it overlaps the absorbent main body 3, and no longer contracts.

The elastic member 233 disposed in the folded portions 4a and 4b has the extension stress 4a and 4b from the viewpoint that the fingers can easily enter the folded portions 4a and 4b and the diaper 1 is easily lifted, and the stomach is not tightened too much. It is preferable that it is lower than the elongation stress of the elastic members (the waist elastic member 231 and the waistline elastic member 232) arranged on the ventral side A or the back side B other than 4b.
In the plurality of elastic members 233 disposed in the folded portions 4a and 4b, the elastic members 233a and 233b disposed at the tips of the folded portions 4a and 4b (see FIG. 3) from the viewpoint of facilitating gripping of the folded portions 4a and 4b. ) Is preferably higher than the other elastic members 233.
As a method of increasing or decreasing the tensile stress, it is performed by adjusting the material, thickness and interval of the elastic member.

  The elastic member 233 disposed on the folded portion 4a of the ventral side A has a viewpoint that the extension stress is easy for a finger to enter the folded portion 4a and easily lift the diaper 1, and the stomach is not over-tightened by the ventral portion A. From a viewpoint, it is still more preferable that it is lower than the elongation stress of the elastic member 233 arranged on the folded portion 4b of the back side portion B.

  The waist elastic member 231, the waistline elastic member 232, the elastic member 233 disposed in the folded portions 4 a and 4 b, and the leg elastic member 24 are not particularly limited as long as they are usually used for absorbent articles such as disposable diapers. Can be used. For example, a thread-like stretchable material made of natural rubber, polyurethane, polystyrene-polyisoprene copolymer, polystyrene-polybutadiene copolymer, polyethylene-α olefin copolymer such as ethyl acrylate-ethylene, or the like can be used.

  Specifically, the plurality of waist elastic members 231 and the plurality of waist elastic members 232 have the same material, the same thickness, and the same elongation stress when stretched in the diaper 1A. More specifically, the elastic member 23 (waist elastic member 231 and waist elastic member 232) having an average stress of 20 gf (preferably a stress in the range of 15 to 30 gf) when stretched to 100% is the same average. It is arranged between the outer layer sheet 21 and the inner layer sheet 22 in a state of being stretched at an elongation rate of 250% (preferably in the range of 150 to 300%). The elongation rate is the ratio of the length of the stretched portion to the natural length. For example, when a 10 cm length is stretched to 20 cm, the stretch rate is 100%.

Specifically describing the plurality of elastic members 233 disposed in the folded portion 4a of the ventral side A, the average stress when stretched to a stretch rate of 100% is 20 gf (stress in the range of 15 to 30 gf). The elastic member 233 of (preferably) is arranged between the outer layer sheet 21 and the inner layer sheet 22 in the folded portion 4a in a state where the elastic member 233 is expanded at the same average elongation rate of 200% (preferably in the range of 100 to 200%). Yes.
Specifically describing the plurality of elastic members 233 disposed on the folded portion 4b of the back side portion B, the average stress when stretched to a stretch rate of 100% is 20 gf (stress in the range of 15 to 30 gf). The elastic member 233 of (preferably) is arranged between the outer layer sheet 21 and the inner layer sheet 22 in the folded portion 4b in a state of being stretched at the same average elongation rate of 200% (preferably in the range of 100 to 200%). Yes.
Specifically, the elastic members 233a and 233b disposed at the tips of the folded portions 4a and 4b of the ventral side A and the back side B will be described. The stress when the stretch rate is 100% is 20 gf (15 to 30 gf). The outer layer sheet 21 and the inner layer sheet in the folded portion 4b in a state where the elastic members 233a and 233b are preferably stretched at a stretch rate of 250% (preferably in the range of 200 to 300%). 22 between them.

Regarding the interval between the elastic members 23 adjacent to each other in the longitudinal direction (Y direction), the interval between the elastic members 233 of the folded portion 4a of the ventral side A or the back side portion from the viewpoint of preventing the stress in the waist elastic region from increasing. It is preferable that the distance between the elastic members 233 of the folded portion 4b of B is wider than the distance between the waist elastic members 231 or the distance between the waist elastic members 232. Further, from the viewpoint of not tightening the ventral portion, the interval between the elastic members 233 of the folded portion 4a of the ventral portion A may be wider than the interval between the elastic members 233 of the folded portion 4b of the dorsal portion B. Further preferred.
The interval between the waist elastic members 231 adjacent to each other in the vertical direction (Y direction) is preferably 3 to 15 mm, and more preferably 4 to 8 mm.
The interval between the waist elastic members 232 adjacent in the vertical direction (Y direction) is preferably 2 to 10 mm, and more preferably 3 to 6 mm.
The interval between the elastic members 233 adjacent to each other in the longitudinal direction (Y direction) in the folded portion 4a of the ventral side A is preferably 3 to 15 mm, and more preferably 5 to 10 mm.
The interval between the elastic members 233 adjacent to each other in the longitudinal direction (Y direction) in the folded portion 4b of the back side portion B is preferably 3 to 15 mm, and more preferably 4 to 8 mm.

  In the diaper 1A, an elastic member 23 (waist elastic member 231, waist elastic member 232, and folded portions 4a and 4b is disposed between the outer layer sheet 22 and the inner layer sheet 21 of the outer package 2 by an adhesive such as hot melt. The elastic member 233) and the leg elastic member 24 are fixed. The application shape of the adhesive is not particularly limited as long as the elastic member 23 and the leg elastic member 24 can be fixed. For example, the adhesive may be formed in a non-continuous linear shape along the side seal portion 5 or a continuous straight line shape. It may be formed. In particular, the elastic members 233 disposed in the folded portions 4a and 4b are fixed by applying an adhesive only at positions corresponding to the pair of side seal portions 5 and 5, and the pair of side seal portions 5 and 5 are connected to each other. In between, it does not need to be fixed with an adhesive.

The forming material of the pants-type disposable diaper 1A of the first embodiment will be described.
The outer layer sheet 22 and the inner layer sheet 21 constituting the outer package 2 can be used without particular limitation as long as they are normally used for absorbent articles such as disposable diapers. For example, as the outer layer sheet 22 and the inner layer sheet 21, a water-repellent nonwoven fabric or the like can be used.

  As the sheets forming the top sheet 31, the back sheet 32, the absorber 33 and the side cuffs 34 constituting the absorbent main body 3, respectively, as long as they are usually used for absorbent articles such as disposable diapers, in particular, Can be used without limitation. For example, a hydrophilic and liquid-permeable nonwoven fabric can be used as the top sheet 31, and a liquid-impermeable or water-repellent resin film or a laminate of a resin film and a nonwoven fabric is used as the back sheet 32. be able to. As the absorbent body 33, an absorbent core made of absorbent polymer particles and a fiber material and covered with tissue paper can be used. As the sheet for forming the side cuffs 34, an elastic film, a nonwoven fabric, a woven fabric, or a laminated sheet thereof can be used.

  For the bonding of the side seal portion 5, an adhesive used for absorbent articles such as disposable diapers, and fusion means such as heat embossing, ultrasonic embossing, and high-frequency embossing are usually used. Similarly, fixing of the absorbent main body 3 and the inner layer sheet 21 of the exterior body 2 and fixing of the top sheet 31, the back sheet 32, and the side cuffs 34 are usually performed with adhesives used for absorbent articles such as disposable diapers, Fusing means such as heat embossing, ultrasonic embossing, and high frequency embossing are used.

The effect at the time of using the underpants type disposable diaper 1A of 1st Embodiment of this invention mentioned above is demonstrated.
1A and 1B, the diaper 1A of the first embodiment is disposed on the outside in a state including a part of the elastic member 233 in the elastic member 23 in each of the ventral side A and the back side B. The folded portions 4 a and 4 b are formed by being folded, and both side edges 4 a 1 and 4 b 1 of the folded portions 4 a and 4 b are fixed by a pair of side seal portions 5. Therefore, when the diaper is used, particularly when the diaper is worn, the wearer (user) himself / herself can easily grasp the folded portion 4a of the abdominal side A, and the diaper can be easily worn by grasping the folded portion 4a, thereby improving the feeling of use. Further, when using a diaper, especially when putting on the diaper, a wearer (user) carer or a caregiver can easily grasp the folded portion 4a of the abdominal side A and the folded portion 4b of the back side B, and the folded portion 4a. It is easy to put on a diaper by grabbing and improves the feeling of use. In addition, even if the diaper 1A is displaced during use of the diaper, the wearer (user), caregiver, or caregiver is placed on the ventral side without putting a hand between the wearer's skin and the opening of the diaper. Since the folded part 4a of A or the folded part 4b of the back side part B can be grasped, it is difficult to damage the skin with the user's nails or the like.

  Further, as shown in FIGS. 1 and 3, the diaper 1 </ b> A of the first embodiment includes a folded portion 4 a on the abdominal side A and a folded portion 4 b on the back side B, and the peripheral edge d <b> 1 of the waist opening and the absorber 33. And the longitudinal direction (Y direction) end portion 33d1. As described above, since the leading end of the folded portions 4a and 4b is not applied to the highly rigid absorber 33, it is easy to put a finger into the folded portions 4a and 4b and to grip the folded portions 4a and 4b.

Next, the underpants type disposable diaper of 2nd Embodiment of this invention is demonstrated based on FIG.
About the underpants type disposable diaper 1B of 2nd Embodiment (henceforth "diaper 1B"), a different point from the underpants type disposable diaper 1A of 1st Embodiment is demonstrated. The point which is not demonstrated especially is the same as that of the diaper 1A, and description of the diaper 1A is applied suitably.

  As shown in FIG. 4, the outer body 2 of the diaper 1 </ b> B according to the second embodiment is similar to the diaper 1 </ b> A in that the peripheral end portion along the periphery of the waist opening WO in the ventral side A is part of the elastic member 23. The folded portion 4a is formed by being folded outward in a state of being included, and the peripheral end portion along the periphery of the waist opening WO in the back side portion B is also folded outward in a state of including a part of the elastic member 23. The folded portion 4b is formed. As shown in FIG. 4, the diaper 1B is formed such that the folded width (W1) of the folded portion 4a of the abdominal side A is longer than the folded width (W2) of the folded portion 4b of the back side B.

As shown in FIG. 4, the folded portions 4a and 4b of the outer package 2 of the diaper 1B are located between the peripheral edge d1 of the waist opening and the longitudinal direction (Y direction) end 33d1 of the absorber 33, as shown in FIG. Is formed.
The ratio (W1 / full length) of the folding width (W1) of the folded portion 4a to the total length in the longitudinal direction (Y direction) of the diaper 1B is 10% to 30% from the viewpoint of being easy for the wearer (infant) to grasp and pull up easily. It is preferable that it is 15% to 20%.
The ratio (W2 / full length) of the folded width (W2) of the folded portion 4b to the total length in the longitudinal direction (Y direction) of the diaper 1B is 0% to 20% from the viewpoint of improving the visibility of the back side design. Is preferable, and it is further more preferable that it is 5 to 10%.

The effect at the time of using the diaper 1B of 2nd Embodiment of this invention mentioned above is demonstrated.
About the effect of the diaper 1B of 2nd Embodiment, a different point from the effect of the diaper 1A of 1st Embodiment is demonstrated. The point which is not demonstrated especially is the same as that of the effect of diaper 1A, and description of the effect of diaper 1A is applied suitably.

  As shown in FIG. 4, the diaper 1B of the second embodiment is formed such that the folded width (W1) of the folded portion 4a of the abdominal side A is longer than the folded width (W2) of the folded portion 4b of the back side B. Has been. Therefore, when wearing a diaper, when the wearer (user) is an infant in particular, the wearer (user) himself can easily grasp the folded portion 4a of the abdominal side A, and grasp the folded portion 4a to remove the diaper. Usability improves because it is easy to wear.

Next, the underpants type disposable diaper of 3rd Embodiment of this invention is demonstrated based on FIG.
About the underpants type disposable diaper 1C of 3rd Embodiment (henceforth "diaper 1C"), a different point from the underpants type disposable diaper 1A of 1st Embodiment is demonstrated. The point which is not demonstrated especially is the same as that of the diaper 1A, and description of the diaper 1A is applied suitably.

  As shown in FIG. 5, a waste tape 6 is disposed and fixed on the back side B of the outer package 2 of the diaper 1 </ b> C of the third embodiment. Specifically, the disposal tape 6 is disposed and fixed on the outer surface of the outer layer sheet 22 constituting the back side portion B other than the folded portion 4b of the back side portion B. The waste tape 6 is formed in a form in which a strip-like tape is folded in the Y direction. The free end 61 of the folded waste tape 6 is arranged on the upper side in the vertical direction (Y direction). The waste tape 6 is maintained in a folded form before use, and in use, the free end 61 of the waste tape 6 is picked and pulled out and fixed to the exterior body 2 for use.

  When the waste tape 6 is used, an adhesive material is applied to the opposing surfaces of the tapes so that the rolled-up form of the diaper 1C can be maintained. The pressure-sensitive adhesive to be applied is a normal pressure-sensitive adhesive such as a styrene-butadiene block copolymer, a styrene-isoprene block copolymer, an acrylate ester, an acrylic copolymer, vinyl acetate, and an ethylene-vinyl acetate copolymer. Hot melt resin or emulsion such as can be used.

  As shown in FIG. 5, the outer package 2 of the diaper 1 </ b> C of the third embodiment is similar to the diaper 1 </ b> A in that the circumferential end portion along the periphery of the waist opening WO in the ventral side A is part of the elastic member 23. The folded portion 4a is formed by being folded outward in a state of being included, and the peripheral end portion along the periphery of the waist opening WO in the back side portion B is also folded outward in a state of including a part of the elastic member 23. The folded portion 4b is formed. As for the diaper 1C, as shown in FIG. 5, the folding width | variety (W2) of the folding | returning part 4b of the back side part B is extended to the position which covers the free end part 61 of the waste tape 6 of the folded form. The folded width (W1) of the folded portion 4a of the ventral side A is formed to be the same length as the folded width (W2) of the folded portion 4b of the back side B in the diaper 1C.

The effect at the time of using the diaper 1C of 3rd Embodiment of this invention mentioned above is demonstrated.
About the effect of 1 C of diapers of 3rd Embodiment, a different point from the effect of 1 A of diapers of 1st Embodiment is demonstrated. The point which is not demonstrated especially is the same as that of the effect of diaper 1A, and description of the effect of diaper 1A is applied suitably.

  As the diaper 1C of 3rd Embodiment is shown in FIG. 5, since the folding | returning part 4b of the back side part B is extended to the position which covers the free end part 61 of the folded form disposal tape 6, it is discarded The tape 6 can be prevented from opening carelessly.

  The pants-type wearing article of the present invention is not limited to the diaper 1A of the first embodiment, the diaper 1B of the second embodiment, and the diaper 1C of the third embodiment, and can be changed as appropriate. Moreover, each component in the diaper 1A-1C of the above-mentioned 1st-3rd embodiment can be implemented in combination suitably in the range which does not impair the meaning of this invention.

  For example, in the abdominal side part A and the back side part B of the diapers 1A to 1C of the first to third embodiments described above, as shown in FIGS. 3, 4, and 5, the inner layer sheet constituting the exterior body 2. 21 folds outward from the waist opening WO along the periphery d1 of the opening of the waist opening WO and extends to the tips of the folded portions 4a and 4b. The outer layer sheet 22 constituting the exterior body 2 is folded in two along the peripheral edge d1 of the opening of the waist opening WO outward from the waist opening WO, that is, so that the outer layer sheets 22 face each other. It extends to the tips of the portions 4a and 4b, and has a length extending in the vertical direction (Y direction). The extended region extends at the tips of the folded portions 4a and 4b. The sheet 21 is folded back so as to wrap, and further extends from the periphery d1 of the opening of the waist opening WO, and is folded back to the inside of the waist opening WO at the periphery d1, and the longitudinal direction of the absorbent body 33 of the absorbent main body 3 It extends to a position covering the end portion 33d1 in the (Y direction) and is bonded via an adhesive (not shown). Such a form is, for example, an inner layer sheet 21 and an outer layer sheet 22 constituting the exterior body 2 such as the ventral side part A and the back side part B of the diaper 1D of another embodiment shown in FIG. It may be configured such that it is folded outwardly from the waist opening WO along the peripheral edge d1 of the opening of the portion WO and extends to the tips of the folded portions 4a and 4b. The ventral side part A and the back side part B of the diaper 1D formed in this way are the ventral side part A and the back side part of the diapers 1A to 1C of the first to third embodiments at the peripheral edge part of the waist opening WO. The thickness can be suppressed as compared with the peripheral portion of the B waist opening WO, and the air permeability is also improved.

  Moreover, in the abdominal side part A and the back side part B of the diapers 1A to 1C of the above-described first to third embodiments, as shown in FIG. Abdominal side A, dorsal side B, and crotch C, but have a ventral sheet member disposed on ventral side A and a dorsal seat disposed on dorsal side B The division | segmentation exterior body divided | segmented into the member may be sufficient.

  Further, in the diapers 1A to 1C of the first to third embodiments described above, as shown in FIGS. 3, 4 and 5, the ventral side portion A and the back side portion B have the folded portions 4a and 4b, respectively. However, any one of the ventral portion A and the dorsal portion B may have a folded portion.

  The pant-type absorbent article may be a pants-type sanitary napkin or the like in addition to a pants-type disposable diaper for infants or adults.

1A, 1B, 1C, 1D Pants-type disposable diaper 2 Exterior body 2a Side edge portion on the ventral side A side 2b Side edge portion on the back side B side 21 Inner layer sheet 22 Outer layer sheet 23 Elastic member 231 Waist elastic member 232 Member 233 Elastic member 233a, 233b disposed at the folded portion Elastic member 24 disposed at the tip of the folded portion 24 Leg elastic member 3 Absorbent body 31 Top sheet 32 Back sheet 33 Absorber 33d1 Absorber longitudinal direction (Y direction) End side 34 Side cuffs 4, 4a, 4b Folded part 4a1 Side edge part 4b1 Folded part 4b Side edge part 5 Side seal part 6 Waste tape 61 Free end part A of folded waste tape A Belly Side, B Dorsal side, C Crotch CL Centerline extending in the longitudinal direction of the diaper WO Waist opening d1 Opening of the waist opening Perimeter LO Leg opening

Claims (5)

A rectangular shape having an abdominal side portion disposed on the abdomen side of the wearer when worn, an exterior body having a back side portion disposed on the back side of the wearer when worn, and an absorbent body fixed to the inside of the exterior body A pant-type absorption comprising a pair of side seal portions, a waist opening portion and a pair of leg openings formed by joining both side edges of the abdominal side portion and the back side portion. A sex product,
In each of the abdomen and the dorsal side, a plurality of elastic members arranged intermittently in the circumferential direction of the waist opening are arranged intermittently in the longitudinal direction of the pants-type wearing article. And
At least one of the ventral side portion and the dorsal side portion is folded outward with the peripheral end portion along the periphery of the waist opening including a part of the elastic members of the plurality of elastic members. And has a folded portion formed by
The folded portion is a pants-type wearing article in which both side edge portions are fixed by a pair of the side seal portions.   The elastic member disposed in the folded portion has an extension stress lower than that of the elastic member disposed on the abdominal side portion or the back side portion other than the folded portion. Pants-type absorbent article.   The pants-type absorbent article according to claim 1 or 2, wherein the folded portion is formed between a peripheral edge of the waist opening and a longitudinal end of the absorber. The ventral portion and the dorsal portion each have the folded portion,
The elastic member disposed in the folded portion of the abdominal side portion has an elongation stress lower than that of the elastic member disposed in the folded portion of the back side portion. The underpants type absorbent article of Claim 1. The ventral portion and the dorsal portion each have the folded portion,
The underpants type absorbent article according to any one of claims 1 to 4, wherein a folded width of the folded portion of the belly side portion is longer than a folded width of the folded portion of the back side portion.

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