Disposable diaper

Patent metadata

Field	Value
Publication number	US-12329620-B2
Application number	US-201917283141-A
Country	US
Kind code	B2
Filing date	Jun 25, 2019
Priority date	Oct 12, 2018
Publication date	Jun 17, 2025
Grant date	Jun 17, 2025

Abstract

A disposable diaper in which an absorbent body ( 7 ) is provided on a crotch part of a pants-shaped exterior member ( 2 ), wherein the absorbent body ( 7 ) is adhered to a skin-facing side of the exterior member ( 2 ) at a first adhering region ( 14 ), an inner sheet ( 5 ) and an outer sheet ( 6 ) of the exterior member ( 2 ) are adhered to each other at a second adhering region ( 16 ), the second adhering region ( 16 ) includes a second middle adhering region ( 16 M) provided at the crotch part, a second front adhering region ( 16 F) located anterior thereto and a second rear adhering region ( 16 B) located posterior thereto, the second front adhering region ( 16 F) and/or the second rear adhering region ( 16 B) is provided intermittently from one side edge to the other side edge, with respect to the width direction, of the absorbent body ( 7 ), and a second front non-adhering region ( 17 F) and/or a second rear non-adhering region ( 17 B) is formed at a portion which the absorbent body ( 7 ) is overlapped with and 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 ( 14 ).

First claim

The invention claimed is:

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.

2. The disposable diaper according to claim 1 , wherein
the second middle adhering region is provided so as to extend outward in the width direction from the one side edge and the other side edge, with respect to the width direction, of the absorbent body to an outer edge of the exterior member.

3. The disposable diaper according to claim 1 , wherein
the second front adhering region is provided so as to extend forward of a front end of the absorbent body, and/or
the second rear adhering region is provided so as to extend rearward of a rear end of the absorbent body.

4. The disposable diaper according to claim 1 , wherein
the second front adhering region is provided so as to extend outward in the width direction from the one side edge and the other side edge, with respect to the width direction, of the absorbent body and overlap with the front leg elastic member, and extend forward of the front leg elastic member, and/or
the second rear adhering region is provided so as to extend outward in the width direction from the one side edge and the other side edge, with respect to the width direction, of the absorbent body and overlap with the rear leg elastic member, and extend rearward of the rear leg elastic member.

5. The disposable diaper according to claim 1 , wherein
a body elastic member extending in the width direction is provided between the inner sheet and the outer sheet on the front body part and the rear body part, and
the second front adhering region and/or the second rear adhering region is provided apart from the body elastic member, whereby a non-adhering region in which the inner sheet and the outer sheet are not adhered to each other is formed between the second front adhering region and the body elastic member and/or between the second rear adhering region and the body elastic member.

6. The disposable diaper according to claim 1 , wherein
a value of W A2 /W A1 is 0.15 or more and 0.90 or less, provided that a length from one side edge to the other side edge, with respect to the width direction, of a portion where the first adhering region overlaps with the second front adhering region is W A1 and a length of the second front non-adhering region in the width direction is W A2 , and/or
a value of W B2 /W B1 is 0.15 or more and 0.90 or less, provided that a length from one side edge to the other side edge, with respect to the width direction, of a portion where the first adhering region overlaps with the second rear adhering region is W B1 and a length of the second rear non-adhering region in the width direction is W B2 .

7. The disposable diaper according to claim 1 , wherein
a length of the second front non-adhering region in the width direction is longer than a length of the second rear non-adhering region in the width direction.

8. The disposable diaper according to claim 1 , wherein
the second front adhering region and/or the second rear adhering region has higher bending resistance than the second middle adhering region.

9. The disposable diaper according to claim 1 , wherein
the first adhering region is provided continuously in the width direction so as to extend across the plurality of second front adhering regions provided intermittently in the width direction, and/or
the first adhering region is provided continuously in the width direction so as to extend across the plurality of second rear adhering regions provided intermittently in the width direction.

10. The disposable diaper according to claim 1 , wherein
the first adhering region is provided intermittently in the width direction, whereby a first non-adhering region in which the absorbent body is not adhered to the exterior member is formed between the adjacent first adhering regions, and
the second front non-adhering region and/or the second rear non-adhering region is provided so as to overlap with the first non-adhering region.

11. The disposable diaper according to claim 1 , wherein
a boundary between the second front adhering region and the second front non-adhering region is formed in a straight line extending in a front-rear direction, and/or
a boundary between the second rear adhering region and the second rear non-adhering region is formed in a

Assignees

• Livedo Corp

Inventors

• Nakaoka Kenji
• Takahashi Yuki

Classifications

• A61F13/539

  characterised by the connection of the absorbent layers with each other or with the outer layers · CPC title

• A61F13/49017 Primary

  the elastic means being located at the crotch region · CPC title