Absorbent article
AssigneeUnicharm Corporation
InventorsIchiro Wada, Masashi Nakashita, Masashi Uda
Life of this patent
Estimating the term…
Abstract
The present invention addresses the problem of providing an absorbent article that has an improved ability to transfer menstrual blood from a liquid-permeable layer to an absorbent body and can reduce the amount of the menstrual blood remaining in the liquid-permeable layer. To solve this problem, provided is a sanitary napkin provided with a top sheet, a back sheet and an absorbent body that is interposed between the top sheet and the back sheet, wherein convex portions formed in an excretion orifice contact region of the top sheet are coated with a blood lubricity-imparting agent that has a kinetic viscosity of 0.01-80 mm2/s at 40° C., a water retention rate of 0.01-4.0 mass % and a weight-average molecular weight of less than 1,000.
Claims11
An absorbent article comprising a liquid-permeable layer, a liquid-impermeable layer and an absorbent body situated between the liquid-permeable layer and the liquid-impermeable layer,
- wherein the liquid-permeable layer has a first layer with a skin contact surface and a non-skin contact surface and a second layer situated on the non-skin contact surface side of the first layer,
- the second layer is a layer formed by heat shrinkage of a heat-shrinkable fiber layer and
- the first layer is a layer formed by deformation of a non-heat-shrinkable fiber layer which is partially joined to the heat-shrinkable fiber layer by a joining section, by heat shrinkage of the heat-shrinkable fiber layer,
- a projection bulges out on the skin contact surface side, produced by deformation of the non-heat-shrinkable fiber layer, are formed at least in the excretory opening contact region on the skin contact surface, and
- at least the projection of the excretory opening contact region is coated with a blood slipping agent having a 40° C. kinematic viscosity of 0.01 to 80 mm2/s, a water holding percentage of 0.01 to 4.0 mass % and a weight-average molecular weight of less than 1,000.
Dependencies are inferred from the claim text.