IP Library › Granted Patent US 10,327,965
Granted Patent B2
US 10,327,965 · App. 14/906,364 · Granted Jun 25, 2019

Absorbent article

Inventor: Yoshimi Norimoto (Sakura, JP)
Assignee: Daio Paper Corporation
A61F13/534A61F13/5121A61F13/51104A61F2013/530007A61F2013/53445A61F2013/530547A61F2013/530715A61F2013/530737A61F2013/8491
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Quick Facts
Patent No.
US 10,327,965
App. No.
14/906,364
Granted
Jun 25, 2019
Kind
B2
Abstract

In an absorbent article a three-dimensional opening hole mesh sheet, having a face which faces skin of a wearer of the absorbent article and a reverse or opposite side face within the absorbent article, is combined with an absorber which includes an air-laid pulp non-woven fabric. The mesh sheet has an array of mechanically embossed concave portions forming protrusions on the skin-facing face of the mesh sheet and recesses on the reverse or opposite face, i.e., the unexposed face inside the absorbent article.

Claims (11)

1. An absorbent article, comprising an absorber interposed between a liquid-permeable front surface sheet and a back surface sheet, the absorbent article being adapted to be worn by a person with an exposed face of the front surface sheet facing the skin of the person, wherein

in the liquid-permeable front surface sheet, a large number of small convex portions protruding to a skin side are formed, the front surface sheet being a three-dimensional opening hole mesh sheet in which the opening holes of the mesh sheet consist of opening holes at apexes of the small convex portions and the mesh sheet has an array of mechanically embossed concave portions forming protrusions on the skin-facing face of the front surface sheet and recesses on a face of the front surface sheet within the absorbent article,

the absorber comprises a five-layer structure wherein the layers are, in the following order, sequentially from the front surface sheet, an air-laid pulp non-woven fabric layer, a high-absorbent polymer A layer, a second air-laid pulp non-woven fabric layer, a high-absorbent polymer B layer and a third air-laid pulp non-woven fabric layer,

polymer A has a higher water absorption rate than polymer B,

polymer B has a higher water absorption capacity than polymer A, and

a weight of the absorber per unit area is 150 to 200 g/m 2 , a combined weight of the polymers A and B with respect to a total weight of the absorber is 30 to 50 weight %, a weight ratio of the polymer A to the polymer B is 1 to 1.5 and overall thickness of the absorbent article is not greater than 2 mm.

2. The absorbent article according to claim 1 , wherein a water absorption rate of polymer A as measured by a Water Absorption Rate Test is less than 40 (sec).

3. The absorbent article according to claim 2 ,

wherein an absorbed amount of polymer B as measured by an Absorbed Amount Test is at least 70 g.

4. The absorbent article according to claim 3 ,

wherein between the liquid-permeable front surface sheet and the absorber, an air-through non-woven fabric is interposed.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 29, 2016
From: NORIMOTO, YOSHIMI
To: DAIO PAPER CORPORATION
Reel/Frame 037952/0159 →
Priority Claims (1)
JP 2013-155558 · Jul 26, 2013 · national
Continuity (1)
Related Publication 20160158074A1 · Jun 9, 2016