US 11,938,007 B2
Diaper for pet
Daisuke Komatsubara, Kanonji (JP); and Yumi Matsumoto, Kanonji (JP)
Assigned to Unicharm Corporation, Ehime (JP)
Filed by UNICHARM CORPORATION, Ehime (JP)
Filed on Sep. 2, 2022, as Appl. No. 17/902,372.
Application 17/902,372 is a continuation of application No. PCT/JP2021/006042, filed on Feb. 18, 2021.
Claims priority of application No. 2020-038779 (JP), filed on Mar. 6, 2020.
Prior Publication US 2022/0409444 A1, Dec. 29, 2022
Int. Cl. A61F 13/494 (2006.01); A61F 13/15 (2006.01); A61F 13/49 (2006.01)
CPC A61F 13/494 (2013.01) [A61F 13/49009 (2013.01); A61F 2013/15186 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A pet diaper having a lateral direction along a waistline direction of a pet and a longitudinal direction that is orthogonal to the lateral direction and extends in a direction connecting a stomach side and a rear side of the pet, the pet diaper comprising:
a main body portion comprising a top sheet, a back-surface sheet, and an absorbent core between the top sheet and the back-surface sheet, wherein
the main body portion includes an upright leak-proof gather and a tail hole that has a hole body portion through which a tail of the pet is to be inserted,
the leak-proof gather includes a rising portion configured to rise up and a first lateral fixed portion that is positioned away from the rising portion toward a lateral outer side of the pet diaper and that functions as a rising fulcrum of the rising portion,
the rising portion of the leak-proof gather includes a contraction portion that has a leak-proof elastic member linearly extending in the longitudinal direction in a stretched state and not bonded to the back-surface sheet,
the tail hole is positioned on the rear side and away from an end edge of the absorbent core toward the rear side,
the contraction portion of the rising portion straddles a region of the pet diaper between the tail hole and the absorbent core,
the contraction portion of the rising portion is positioned in a hole side region of the pet diaper that extends from the tail hole toward the lateral outer side,
the contraction portion of the rising portion includes a low contraction portion in at least a part of the hole side region and a high contraction portion on two outer sides of the hole side region in the longitudinal direction, the low contraction portion having a weaker contractive force in the longitudinal direction compared to the high contraction portion,
the tail hole includes the hole body portion and a notch portion that is a portion to tear the top sheet and the back-surface sheet and that is configured to enlarge a dimension of the hole body portion, and
the low contraction portion is positioned in a region that extends to the lateral outer side from the hole body portion.