Absorbent article
AssigneeUnicharm Corporation
InventorMasashi Uda
Life of this patent
Estimating the term…
Abstract
An absorbent article is provided with a liquid-permeable top sheet, a liquid-impermeable back sheet and an absorbent body between the top sheet and the back sheet. The top sheet has a non-woven fabric having multiple convex portions and multiple concave portions. The individual convex portions and concave portions contain 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. The amount of the blood lubricity-imparting agent at the top of the convex portions is larger than in the parts other than the top of the convex portions. The amount of the blood lubricity-imparting agent at the bottom of the concave portions is larger than in the parts other than the bottom of the concave portions.
Claims8
An absorbent article, comprising:
- a liquid-permeable top sheet,
- a liquid-impermeable back sheet, and
- an absorbent body between the top sheet and the back sheet,
- wherein
- the top sheet includes a nonwoven fabric having a plurality of projections and a plurality of recesses,
- the projections and recesses each containing a blood slipping agent with
- a kinematic viscosity of 0.01 to 80 mm2/s at 40° C.,
- a water holding percentage of 0.01 to 4.0 mass %, and
- a weight-average molecular weight of less than 1,000,
- the amount of blood slipping agent in top sections of the projections is greater than the amount of blood slipping agent at other sections, other than the top sections, of the projections,
- the amount of blood slipping agent at bottom sections of the recesses is greater than the amount of blood slipping agent at other sections, other than the bottom sections, of the recesses,
- the top sections of the projections having greater amount of blood slipping agent have higher fiber density than the other sections of the projections, and
- the bottom sections of the recesses having greater amount of blood slipping agent have higher fiber density than the other sections of the recesses.
Dependencies are inferred from the claim text.