# US 10,869,788 B2 · Absorbent article

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- Number: US 10,869,788 B2
- Document ID: US10869788B2
- Status: Granted
- Kind: B2
- Application number: 15/761,491
- Filed: 2016-08-04
- Published: 2018-09-20
- Granted: 2020-12-22
- Earliest claimed: 2015-09-30
- Assignees: Daio Paper Corporation
- Applicants: Daio Paper Corporation
- Inventors: Sadanao Manabe
- Web page: https://patentgrep.com/patent/US10869788B2

## CPC

- A61F 13/534: having an inhomogeneous composition through the thickness of the pad (A61F13/538, A61F13/539 take precedence)
- A61F 13/15617: {Making absorbent pads from fibres or pulverulent material with or without treatment of the fibres}
- A61F 13/42: with wetness indicator or alarm
- A61F 13/531: having a homogeneous composition through the thickness of the pad (A61F13/538, A61F13/539 take precedence)
- A61F 13/535: inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes ({A61F13/5323,} A61F13/537 take precedence)
- A61F 13/539: characterised by the connection of the absorbent layers with each other or with the outer layers
- A61F 13/496: in the form of pants or briefs
- A61F 13/84: Accessories, not otherwise provided for, for absorbent pads
- A61F 2013/15146: {for urine collection}
- A61F 2013/422: {the alarm being a colour change}
- A61F 2013/530226: {with polymeric fibres}
- A61F 2013/53051: {being only in particular parts or specially arranged}
- A61F 2013/5315: {with a tissue-wrapped core}
- A61F 2013/5395: {with thermoplastic agent, i.e. softened by heat}
- A61F 2013/8497: {having decorations or indicia means}
- 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

An absorbent article has an absorbent body with a colored fiber layer colored in a different color from a color of any member other than the absorbent body across a whole in a front-back direction and a width direction thereof. The colored fiber layer is visually recognizable from an outside.

## Claims

### Claim 1

An absorbent article, comprising
an absorbent body a front face side and a back face side and extending both in a front-back direction and in a width direction oriented perpendicular to the front-back direction, wherein the front face side is configured to contact skin of a user of the absorbent article and wherein the absorbent body comprises:
a colored fiber layer located proximate the back face side and visually recognizable when viewing the back face side from an exterior of the absorbent body when the absorbent article is in use, the colored fiber layer comprising pulp fibers colored in a different color from a color of any other layer of the absorbent body, wherein the plurality of pulp fibers have a color value in a Munsell color system in the range of 4 to 9, and
a non-colored fiber layer positioned above the colored fiber layer and proximate the front face side;
wherein the non-colored fiber layer contains high absorbent polymer particles, and the colored fiber layer does not contain the high absorbent polymer particles.

### Claim 2 (depends on 1)

The absorbent article according to claim 1, wherein the colored fiber layer further comprises a slit extending through the colored fiber layer in a thickness direction, wherein the thickness direction extends from the front face side to the back face side.

### Claim 3 (depends on 2)

The absorbent article according to claim 2, wherein the slit extends from a left side boundary to a right side boundary in the width direction, and wherein the absorbent body further comprises an excretion indicator, at least a portion of the excretion indicator located at a position between the left side boundary and the right side boundary of the slit.

### Claim 4 (depends on 1)

The absorbent article according to claim 1, wherein the absorbent article corresponds to:
an underpants-type disposable diaper including a crotch portion comprising the absorbent body, a ventral side part extending at a front side of the crotch portion, a dorsal side part extending at a back side of the crotch portion, both side portions of the ventral side part and both side portions of the dorsal side part being joined together, respectively, or
a tape-type disposable diaper including a crotch portion comprising the absorbent body, a ventral side part extending at a front side of the crotch portion, a dorsal side part extending at a back side of the crotch portion, and fastening tapes protruding from both side portions of the dorsal side part, respectively, to be connected to an external surface of the ventral side part.

### Claim 5 (depends on 1)

The absorbent article according to claim 1, wherein:
a basis weight amount of the high absorbent polymer particles is in the range of 50 to 350 g/m2;
the non-colored fiber layer further contains pulp fibers; and
a weight ratio of pulp fibers to high absorbent polymer particles in the absorbent body is in the range of 50:50 to 20:80.