Sanitary napkin
First Claim
1. A sanitary napkin comprising a liquid-permeable topsheet, a backsheet, and a liquid-absorbent layer disposed between the topsheet and the backsheet, wherein the liquid-absorbent layer has a vagina-facing region on a longitudinal centerline of the sanitary napkin and side regions on both sides of the vagina-facing region, and the liquid-absorbent layer has a greater thickness and a greater bending stiffness in the vagina-facing region than in the side regions to provide hinge lines along boundaries between the vagina-facing region and the side regions.
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Accused Products
Abstract
A sanitary napkin includes a liquid-permeable topsheet, a backsheet, and a liquid-absorbent layer disposed between the topsheet and the backsheet. The liquid-absorbent layer has a vagina-facing region on a longitudinal centerline of the sanitary napkin and side regions on both sides of the vagina-facing region. The liquid-absorbent layer has a greater thickness and a greater bending stiffness in the vagina-facing region than in the side regions to provide hinge lines along boundaries between the vagina-facing region and the side regions.
162 Citations
22 Claims
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1. A sanitary napkin comprising
a liquid-permeable topsheet, a backsheet, and a liquid-absorbent layer disposed between the topsheet and the backsheet, wherein the liquid-absorbent layer has a vagina-facing region on a longitudinal centerline of the sanitary napkin and side regions on both sides of the vagina-facing region, and the liquid-absorbent layer has a greater thickness and a greater bending stiffness in the vagina-facing region than in the side regions to provide hinge lines along boundaries between the vagina-facing region and the side regions.
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14. A sanitary napkin comprising
a liquid-permeable topsheet, a backsheet, and a liquid-absorbent layer disposed between the topsheet and the backsheet, wherein the liquid-absorbent layer has a vagina-facing region on a longitudinal centerline of the sanitary napkin and side regions on both sides of the vagina-facing region, the liquid-absorbent layer has an absorbent core with hinge lines along boundaries between the vagina-facing region and the side regions, and the hinge lines have cuts penetrating through a thickness of the absorbent core or partway into the absorbent core or low-density portions where a density of the absorbent core is locally decreased.
Specification