US 12,329,620 B2
Disposable diaper
Kenji Nakaoka, Tokushima (JP); and Yuki Takahashi, Tokushima (JP)
Assigned to LIVEDO CORPORATION, Ehime (JP)
Appl. No. 17/283,141
Filed by LIVEDO CORPORATION, Ehime (JP)
PCT Filed Jun. 25, 2019, PCT No. PCT/JP2019/025126
§ 371(c)(1), (2) Date Apr. 6, 2021,
PCT Pub. No. WO2020/075348, PCT Pub. Date Apr. 16, 2020.
Claims priority of application No. 2018-193233 (JP), filed on Oct. 12, 2018.
Prior Publication US 2021/0386598 A1, Dec. 16, 2021
Int. Cl. A61F 13/49 (2006.01); A61F 13/539 (2006.01)
CPC A61F 13/49017 (2013.01) [A61F 13/539 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A disposable diaper comprising:
an exterior member that has a front body part, a rear body part and a crotch part positioned therebetween and is formed into a pants shape having a waist opening and a pair of leg openings by joining the front body part and the rear body part; and
an absorbent body that is provided at least on the crotch part of the exterior member and includes a top sheet, a back sheet and an absorber provided therebetween;
wherein:
the exterior member includes an inner sheet and an outer sheet;
a front leg elastic member extending across the crotch part and along a front side of an edge of the leg opening and a rear leg elastic member extending across the crotch part and along a rear side of the edge of the leg opening are provided between the inner sheet and the outer sheet;
the absorbent body is adhered to a skin-facing side of the exterior member at a first adhering region;
the inner sheet and the outer sheet are adhered to each other at a second adhering region, the second adhering region includes a second middle adhering region provided at the crotch part, a second front adhering region located anterior to the second middle adhering region and a second rear adhering region located posterior to the second middle adhering region, and the front leg elastic member and the rear leg elastic member are disposed so as to extend intermittently across the crotch part in the second middle adhering region;
the second middle adhering region is provided so that at least a part thereof overlaps with the first adhering region and is provided continuously from one side edge to the other side edge of the absorbent body in the width direction; and
the second front adhering region is provided so as to satisfy the following requirement A and/or the second rear adhering region is provided so as to satisfy the following requirement B:
Requirement A:
The second front adhering region is provided apart from the second middle adhering region in a front-rear direction;
the second front adhering region is provided so that at least a part thereof overlaps with the first adhering region and is provided intermittently from one side edge to the other side edge, with respect to the width direction, of the absorbent body, whereby a second front non-adhering region in which the inner sheet and the outer sheet are not adhered to each other is formed at a portion which the absorbent body is overlapped with on a front side of the second middle adhering region; and
the second front adhering region is provided so as to overlap with one side edge and the other side edge, with respect to the width direction, of the first adhering region,
Requirement B:
The second rear adhering region is provided apart from the second middle adhering region in a front-rear direction;
the second rear adhering region is provided so that at least a part thereof overlaps with the first adhering region and is provided intermittently from one side edge to the other side edge, with respect to the width direction, of the absorbent body, whereby a second rear non-adhering region in which the inner sheet and the outer sheet are not adhered to each other is formed at a portion which the absorbent body is overlapped with on a rear side of the second middle adhering region; and
the second rear adhering region is provided so as to overlap with one side edge and the other side edge, with respect to the width direction, of the first adhering region.