US 10,335,324 B2Granted

Absorbent articles with channels

AssigneeThe Procter & Gamble Company

InventorsDonald Carroll Roe, Kathy Quinlan Ames-Ooten, Julia Boesel, Barry Robert Feist, Nelson Edward Greening, II, Carsten Heinrich Kreuzer, Cornelia Beate Martynus, Marie Brigid O'Reilly, Sandra Sautter, Beate Simon, Lutz Stelzig, Rachael Eden Walther

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Abstract

The present disclosure is directed, in part, to an absorbent article that comprises a liquid management system (LMS) and an absorbent core disposed at least partially intermediate a topsheet and a backsheet. The LMS defines one or more channels substantially free of superabsorbent polymers. The one or more channels of the LMS may at least partially overlap channels defined by the absorbent core. The absorbent article may comprises a liquid distribution system (LDS) that defines one or more channels.

Claims20

Dependent claims

An absorbent article comprising:

a front waist region;
a rear waist region;
a crotch region positioned intermediate the front waist region and the rear waist region;
a liquid permeable material;
a liquid impermeable material;
an absorbent core disposed at least partially intermediate the liquid permeable material and the liquid impermeable material and comprising an absorbent material, wherein the absorbent material is positioned within a core wrap, wherein the core wrap forms a C-wrap, wherein the absorbent material comprises at least 85% of superabsorbent polymers by weight of the absorbent material, wherein the absorbent core defines a first channel substantially free of the superabsorbent polymers, wherein the first channel extends substantially through the thickness of the absorbent material, wherein a first side of the core wrap is joined to a second side of the core wrap in a portion of the first channel, and wherein the first channel extends from the front waist region to the rear waist region;
a liquid management system positioned at least partially intermediate the liquid permeable material and the core wrap, wherein the liquid management system is substantially free of any superabsorbent polymers;
and
a liquid distribution system, wherein the liquid distribution system defines a second channel, wherein the liquid distribution system is positioned intermediate the liquid management system and the core wrap, and wherein the second channel extends substantially through the thickness of the liquid distribution system.

6 more elements

An absorbent article comprising:

a front waist region;
a rear waist region;
a crotch region positioned intermediate the front waist region and the rear waist region;
a liquid permeable material;
a liquid impermeable material;
an absorbent core disposed at least partially intermediate the liquid permeable material and the liquid impermeable material and comprising an absorbent material, wherein the absorbent material is positioned within a core wrap, wherein the core wrap forms a C-wrap, wherein the absorbent material comprises at least 85% of superabsorbent polymers by weight of the absorbent material, wherein the absorbent core defines a first channel substantially free of the superabsorbent polymers, wherein the first channel extends substantially through the thickness of the absorbent material, wherein a first side of the core wrap is joined to a second side of the core wrap in a portion of the first channel, and wherein the first channel extends from the front waist region to the rear waist region;
an acquisition layer positioned at least partially intermediate the liquid permeable material and the core wrap, wherein the acquisition layer is substantially free of any superabsorbent polymers;
and
a distribution layer, wherein the distribution layer defines a second channel, wherein the distribution layer is positioned intermediate the acquisition layer and the core wrap, and wherein the second channel extends substantially through the thickness of the distribution layer.

6 more elements

An absorbent article comprising:

a front waist region;
a rear waist region;
a crotch region positioned intermediate the front waist region and the rear waist region;
a liquid permeable material;
a liquid impermeable material;
an absorbent core disposed at least partially intermediate the liquid permeable material and the liquid impermeable material and comprising an absorbent material, wherein the absorbent material is positioned within a core wrap, wherein the core wrap forms a C-wrap, wherein the absorbent core defines a first channel substantially free of the superabsorbent polymers, wherein the first channel extends substantially through the thickness of the absorbent material, wherein a first side of the core wrap is joined to a second side of the core wrap in a portion of the first channel, and wherein the first channel extends from the front waist region to the rear waist region;
an acquisition layer positioned at least partially intermediate the liquid permeable material and the core wrap, wherein the acquisition layer is substantially free of any superabsorbent polymers;
and
a distribution layer, wherein the distribution layer defines a second channel, wherein the distribution layer is positioned intermediate the acquisition layer and the core wrap, and wherein the second channel extends substantially through the thickness of the distribution layer.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/467,102Filed 25 Aug 2014 · us provisional application
Priority: 27 Aug 2013
Published: US 2015/0065976 A15 Mar 2015
Granted: 2 Jul 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

A61F 13/512
Topsheet, i.e. the permeable cover or layer facing the skin: characterised by its apertures, e.g. perforations
A61F 13/42
Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor;…:…
A61F 13/5125
The apertures being formed on a multilayer top sheet: the apertures not being formed through the complete thickness of the topsheet, e.g. blind holes
A61F 13/532
Having a homogeneous composition through the thickness of the pad: inhomogeneous in the plane of the pad