US 5,460,622 AGranted

Absorbent article having blended multi-layer absorbent structure with improved integrity

AssigneeThe Procter & Gamble Company

InventorsJerry L. Dragoo, Michael S. Bogdanski, Nicholas A. Ahr, John R. Noel

Life of this patent

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Abstract

An absorbent article, such as a diaper, sanitary napkin, adult incontinence device which has absorbent components comprised of blends of different types of fibers is provided. The absorbent components are arranged in structures that provide improved core integrity and liquid processing. The absorbent article preferably comprises a liquid pervious topsheet, a liquid impervious backsheet joined to the topsheet, an absorbent core positioned between the topsheet and the backsheet, and an acquisition layer overlying the absorbent core. The absorbent core comprises a blend of cellulosic fibers, absorbent gelling material, and fibers such as crimped synthetic fibers that form liquid stable bonds with adjacent layers. The acquisition layer also comprises at least some fibers that form liquid stable bonds with adjacent layers. The fibers that form liquid stable bonds in the absorbent core and the acquisition layer are bonded to liquid stable components. The liquid stable components can comprise the topsheet, the backsheet, and an optional intermediate liquid stable layer positioned between the acquisition layer and the absorbent core.

Claims3

Dependent claims

An absorbent article having a longitudinal centerline extending in a longitudinal direction and a transverse centerline extending in a lateral direction, said absorbent article comprising:

a liquid pervious topsheet;
a liquid impervious backsheet joined to said topsheet;
an absorbent core positioned between said topsheet and said backsheet, said absorbent core having a body-facing face and a garment-facing face and comprising a mixture of absorbent gelling material and fibers, said fibers comprising a blend of cellulose fibers and liquid insensitive crimped synthetic fibers;
an acquisition layer positioned between said topsheet and said absorbent core, said acquisition layer having a body-facing face and a garment-facing face and having crimped synthetic fibers distributed therein;
and
an intermediate layer positioned between said acquisition layer and said absorbent core, said intermediate layer having two sides, wherein one side of said intermediate layer is adhesively bonded to the garment-facing face of said acquisition layer and the other side of said intermediate layer is adhesively bonded to the body-facing face of said absorbent core, said adhesive bonding between said intermediate layer and said acquisition layer and said absorbent core being formed by an adhesive having a wet peel strength of greater than or equal to 10 g/in.;
wherein the body-facing face of said acquisition layer is adhesively bonded to said topsheet and said garment-facing face of said absorbent core is adhesively bonded to said backsheet.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/337,573Filed 10 Nov 1994 · continuation
Priority: 3 Jan 1991
Granted: 24 Oct 1995
Term ends: Not estimatedThe source records don’t support an estimate.

Classification106 codes

D01D 5/253
Formation of filaments, threads, or the like: with a non-circular cross section; Spinnerette packs therefor
A61F 13/15203
Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor;…:…
A61F 13/472
Sanitary towels, incontinence pads or napkins: specially adapted for female use
A61F 13/47218
Specially adapted for female use: with a raised crotch region, e.g. hump

Family

Serial637,090Parent of this continuation-in-part · filed 3 Jan 1991
Serial637,571Parent of this continuation-in-part · filed 3 Jan 1991
Serial810,774Parent of this continuation-in-part · filed 17 Dec 1991
Serial874,871Parent of this continuation-in-part · filed 28 Apr 1992
Serial874,872Parent of this continuation-in-part · filed 28 Apr 1992
Serial882,738Parent of this continuation-in-part · filed 14 May 1992
Serial915,133Parent of this continuation-in-part · filed 23 Jul 1992
Serial915,134Parent of this continuation-in-part · filed 23 Jul 1992
Serial915,201Parent of this continuation-in-part · filed 23 Jul 1992
Serial915,202Parent of this continuation-in-part · filed 23 Jul 1992
Serial915,284Parent of this continuation-in-part · filed 23 Jul 1992
Serial915,285Parent of this continuation-in-part · filed 23 Jul 1992
Serial926,183Parent of this continuation-in-part · filed 7 Aug 1992
Serial931,122Parent of this continuation-in-part · filed 17 Aug 1992
Serial944,764Parent of this continuation-in-part · filed 14 Sep 1992
Serial957,575Parent of this continuation-in-part · filed 7 Oct 1992
Serial966,240Parent of this continuation-in-part · filed 26 Oct 1992
Serial911Parent of this continuation-in-part · filed 6 Jan 1993
Serial108,861Parent of this continuation-in-part · filed 18 Aug 1993
Serial153,739Parent of this continuation-in-part · filed 16 Nov 1993
Serial164,049Parent of this continuation · filed 8 Dec 1993
US 5,304,161 AParent of this continuation-in-part
US 5,300,054 AParent of this continuation-in-part
US 5,460,622 AThis patent

From the US filing history. Foreign family members aren’t listed.