Absorbent article

Patent metadata

Field	Value
Publication number	US-11344455-B2
Application number	US-201716463614-A
Country	US
Kind code	B2
Filing date	Nov 27, 2017
Priority date	Nov 29, 2016
Publication date	May 31, 2022
Grant date	May 31, 2022

Abstract

An absorbent article comprising a polymer sheet 4 in which a super absorbent polymer 12 exists between an upper layer sheet 10 arranged on the skin side and a lower layer sheet 11 arranged on the non-skin side is included. A fiber absorber 5 including pulp fiber is disposed adjacent to the surface on the skin side of an area corresponding to a body fluid discharge region H of a wearer in the polymer sheet 4. The super absorbent polymer 12 is not arranged in an area which overlaps with the fiber absorber 5, and is arranged in the other area. The water absorption rate of the absorbent article is not reduced even when water is repeatedly absorbed. Additionally, leakage is prevented, a wearing feeling is not worsened, and the adsorbent article may have a reduction in thickness.

First claim

The invention claimed is:

1. An absorbent article, comprising a polymer sheet in which a super absorbent polymer exists between an upper layer sheet arranged on a skin side and a lower layer sheet arranged on a non-skin side, the polymer sheet having an area corresponding to a body fluid discharge region of a wearer,
the absorbent article being characterized in that a fiber absorber comprising pulp fiber is disposed adjacent to a surface on a skin side of said area of the polymer sheet, and
the polymer sheet comprises a polymer arranged area in which the super absorbent polymer exists between the upper layer sheet and the lower layer sheet in an area which does not overlap with the fiber absorber, and a non-polymer area in which the super absorbent polymer does not exist between the upper layer sheet and the lower layer sheet in an area which overlaps with the fiber absorber, wherein
the non-polymer area has a depressed area in which a surface on a skin side is depressed compared to the polymer arranged area surrounding the non-polymer area due to non-existence of the super absorbent polymer, and
the fiber absorber is arranged to fit the depressed area of the non-polymer area.

2. The absorbent article according to claim 1 , wherein the fiber absorber comprises only pulp fiber or comprises pulp fiber and a super absorbent polymer.

3. The absorbent article according to claim 1 , wherein a difference in height between a surface on a skin side of the fiber absorber and a surface on a skin side of the polymer arranged area of the polymer sheet is 0 to 5 mm.

4. The absorbent article according to claim 1 , wherein one or more openings penetrating from front to back are formed in the fiber absorber.

5. The absorbent article according to claim 1 , wherein a concave portion depressed to the polymer sheet is formed on a surface on a skin side of the fiber absorber.

6. The absorbent article according to claim 1 , wherein an area in which the super absorbent polymer is arranged in the polymer sheet is divided into a plurality of defined areas by joint portions joining the upper layer sheet and lower layer sheet and also the super absorbent polymer is arranged in the defined areas, or an area in which the super absorbent polymer is arranged is not divided by joint portions joining the upper layer sheet and lower layer sheet and the super absorbent polymer is arranged on a whole surface.

Assignees

• Daio Seishi Kk

Inventors

• Tagomori Junta

Classifications

• A61F2013/530481

  having superabsorbent materials, i.e. highly absorbent polymer gel materials · CPC title

• A61F13/53752 Primary

  the layer is embedded in the absorbent core · CPC title

• A61F13/5323

  having absorbent material located in discrete regions, e.g. pockets · CPC title

• A61F2013/530386

  with pulp and polymeric · CPC title

• A61F2013/53051

  being only in particular parts or specially arranged · CPC title