# US 11,291,596 B2 · Absorbent pad

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- Number: US 11,291,596 B2
- Document ID: US11291596B2
- Status: Granted
- Kind: B2
- Application number: 16/493,016
- Filed: 2018-03-06
- Published: 2020-02-27
- Granted: 2022-04-05
- Earliest claimed: 2017-03-21
- Assignees: Daio Paper Corporation
- Applicants: Daio Paper Corporation
- Inventors: Junnosuke Suyama
- Web page: https://patentgrep.com/patent/US11291596B2

## CPC

- A61F 13/53409: {having a folded core}
- A61F 13/49406: {the edge leakage prevention means being at the crotch region}
- A61F 13/5323: {having absorbent material located in discrete regions, e.g. pockets}
- A61F 2013/530481: {having superabsorbent materials, i.e. highly absorbent polymer gel materials}
- A61F 2013/53054: {the maximum being along the side edges}
- A61F 2013/5307: {characterized by the quantity or ratio of superabsorbent material}
- A61F 2013/530985: {being along the side edges}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)

## Abstract

Provided is an absorbent pad which prevents leakage of excess liquid excrement to the exterior. An absorbent pad sheet forms an absorbent pad from a liquid-permeable front sheet and a liquid permeable rear sheet, and absorbent polymer particles which absorb liquid excrement and which are provided between the front sheet and the rear sheet. The width in the width direction formed between both side parts folded to the inside is formed as 10-50% of the width of the absorbent pad in the width direction, and some of the absorbent polymer particles at the place at which folding to the inside occurs are made to penetrate the front sheet at the place at which folding to the inside occurs.

## Claims

### Claim 1

An absorbent pad comprising:
an absorbent pad formed by folding the both ends of the width direction of an absorbent pad sheet inward wherein:
the absorbent pad sheet is formed with a liquid-permeable front sheet, a liquid-permeable rear sheet and absorbent polymer particles absorbing the liquid excretions that are provided in between the liquid-permeable front sheet and the liquid-permeable rear sheet;
a width in the width direction formed between the both ends folded inward is formed 10˜50% with respect to a width in the width direction of the absorbent pad; and
a part of the absorbent polymer particles in the sections folded inward is passed through the front sheet in the sections folded inward;
wherein, when viewed in plan, the front sheet and the rear sheet are connected by a plurality of junctions; and
the absorbent polymer particles are packed within a plurality of cells defined by the junctions.

### Claim 2 (depends on 1)

The absorbent pad of claim 1, wherein the junctions include first junctions extending in the longitudinal direction at predetermined intervals in the width direction and second junctions extending in the width direction at predetermined intervals in the longitudinal direction.

### Claim 3 (depends on 1)

The absorbent pad of claim 1, wherein the base weight of the front sheet is formed greater than the base weight of the rear sheet.

### Claim 4 (depends on 3)

The absorbent pad of claim 3, wherein the thickness of the front sheet is formed thicker than the thickness of the rear sheet.

### Claim 5 (depends on 3)

The absorbent pad of claim 3, wherein the base weight of the absorbent polymer particles in the sections folded inward is arranged greater than the base weight of the absorbent polymer particles in the sections other than the sections folded inward of the absorbent pad sheet.

### Claim 6 (depends on 1)

The absorbent pad of claim 1, wherein the thickness of the front sheet is formed thicker than the thickness of the rear sheet.

### Claim 7 (depends on 6)

The absorbent pad of claim 6, wherein the base weight of the absorbent polymer particles in the sections folded inward is arranged greater than the base weight of the absorbent polymer particles in the sections other than the sections folded inward of the absorbent pad sheet.

### Claim 8 (depends on 1)

The absorbent pad of claim 1, wherein the base weight of the absorbent polymer particles in the sections folded inward is arranged greater than the base weight of the absorbent polymer particles in the sections other than the sections folded inward of the absorbent pad sheet.

### Claim 9 (depends on 1)

The absorbent pad of claim 1, wherein the base weight of the front sheet is formed greater than the base weight of the rear sheet.

### Claim 10 (depends on 1)

The absorbent pad of claim 1, wherein the thickness of the front sheet is formed thicker than the thickness of the rear sheet.

### Claim 11 (depends on 1)

The absorbent pad of claim 1, wherein the base weight of the absorbent polymer particles in the sections folded inward is arranged greater than the base weight of the absorbent polymer particles in the sections other than the sections folded inward of the absorbent pad sheet.