US 12,465,529 B2
Disposable diaper
Takeshi Minami, Tochigi (JP)
Assigned to Daio Paper Corporation, Ehime (JP)
Appl. No. 18/265,101
Filed by DAIO PAPER CORPORATION, Ehime (JP)
PCT Filed Jan. 26, 2022, PCT No. PCT/JP2022/002762
§ 371(c)(1), (2) Date Jun. 2, 2023,
PCT Pub. No. WO2022/176533, PCT Pub. Date Aug. 25, 2022.
Claims priority of application No. 2021-023326 (JP), filed on Feb. 17, 2021.
Prior Publication US 2024/0016668 A1, Jan. 18, 2024
Int. Cl. A61F 13/15 (2006.01); A61F 13/49 (2006.01); A61F 13/511 (2006.01)
CPC A61F 13/49001 (2013.01) [A61F 13/4902 (2013.01); A61F 13/511 (2013.01); A61F 2013/49033 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A disposable diaper comprising:
an inner member having a liquid-permeable top sheet, a liquid-impermeable under sheet, and an absorbent body interposed between the top sheet and the under sheet, and
an outer member stretchable in its width direction and fixed on a surface of the inner member opposite to another surface thereof facing a body of a wearer,
wherein the absorbent body, as seen in plan view, has a rectangular ventral section facing a ventral portion of the wearer, a rectangular dorsal section facing a dorsal portion of the wearer, and a crotch section connecting the ventral section and the dorsal section,
wherein each of side edges opposed in a width direction of a front area of the crotch section has a first oblique part extending from front backward and inward in the width direction,
wherein each of side edges opposed in a width direction of a back area of the crotch section has a second oblique part extending from back forward and inward in the width direction,
wherein each of side edges opposed in a width direction of a middle area of the crotch section has a straight part extending from a back end of the first oblique part to a front end of the second oblique part,
wherein a pair of first slits is provided from the ventral section to the front area of the crotch section in their side portions opposed in their width direction, at a distance from and in parallel to the first oblique parts,
wherein a second slit is provided in parallel to the straight parts, in a central part in the width direction of the middle area of the crotch section,
wherein a pair of third slits is provided at a distance from the second oblique parts, in the back part of the crotch section in its side portions opposed in the width direction, with a back end of each third slit located laterally outwards of its front end in the width direction,
wherein a pair of fourth slits is provided crossing each other and in parallel to the second oblique parts, in a middle area in a width direction of the dorsal section,
wherein back ends of the first slits are located inwards of the straight parts in a width direction of the absorbent body, and
wherein front ends of the fourth slits are located at a longitudinal distance from the back ends of the third slits.