Method of making an absorbent core for disposable absorbent article

Patent metadata

Field	Value
Publication number	US-10766186-B2
Application number	US-201615156970-A
Country	US
Kind code	B2
Filing date	May 17, 2016
Priority date	Mar 5, 2007
Publication date	Sep 8, 2020
Grant date	Sep 8, 2020

Abstract

A method of integrating a first fibrous web with a second fibrous web, said method comprising the steps of: a. providing a first absorbent fibrous web material; b. providing a topsheet comprising a second fibrous web material; c. providing an integrating means; and d. integrating said first absorbent fibrous web material and said second fibrous web material by processing through said integrating means. The step of integrating said first absorbent fibrous web material and said second fibrous web material comprises inter-entangling fibers from the first absorbent fibrous web and fibers from the second fibrous web.

First claim

What is claimed is:

1. A method of manufacturing an absorbent core component having a longitudinal centerline, comprising the steps of:
a. providing an airlaid fibrous web material comprising cellulosic fibers and a binder;
b. providing a spunbond fibrous web material;
c. providing a pair of rolls forming a nip through which both of said airlaid fibrous web material and said spunbond fibrous web material can be processed together, said pair of rolls being adapted to mechanically deform the airlaid and spunbond web materials together via at least one of ring rolling, SELFing or rotary knife aperturing;
d. deforming said airlaid fibrous web material and said spunbond fibrous web material together by processing through said pair of rolls and said nip, and thereby combining said web materials to form a processed combined web; and
e. combining said processed combined web with an absorbent layer comprising an airlaid blend of cellulosic fibers and absorbent gelling material to form a layered absorbent structure.

2. The method of claim 1 wherein the binder comprises latex.

3. The method of claim 1 wherein the binder comprises thermoplastic material.

4. The method of claim 3 further comprising the step of heating the airlaid fibrous web material following an airlaying step.

5. The method of claim 4 wherein the thermoplastic material comprises polyethylene.

6. The method of claim 1 further comprising a second step of deforming the absorbent layer prior to the combining step.

7. The method of claim 6 wherein said second deforming step is performed via at least one of ring rolling, SELFing or rotary knife aperturing.

8. The method of claim 1 wherein the absorbent layer comprises latex.

9. The method of claim 1 wherein the pair of rolls is configured to impart a pattern of features in a central region of the absorbent structure corresponding to the longitudinal centerline, that is different from features along either or both of side regions of the absorbent structure.

Assignees

• Procter & Gamble

Inventors

• Zhao Jean Jianqun
• Noel John Richard
• Mcaffry Karen Denise
• Gilbertson Gary Wayne
• Gray Brian Francis
• Arora Kelyn Anne

Classifications

• B29C43/222 Primary

  characterised by the shape of the surface · CPC title

• B30B11/18

  using profiled rollers · CPC title

• B30B11/165

  Roll constructions · CPC title

• B30B3/005

  Roll constructions · CPC title

• B29C2043/464

  having projections or knives, e.g. for cutting-out or for forming local depressions · CPC title