Methods of making elastic belts for absorbent articles

Patent metadata

Field	Value
Publication number	US-10918532-B2
Application number	US-201816208810-A
Country	US
Kind code	B2
Filing date	Dec 4, 2018
Priority date	Dec 19, 2017
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

The present disclosure is directed to methods of manufacturing elastic belts for absorbent articles. The elastic belts may be used as waist bands, or portions thereof, in absorbent articles. The elastic belts may define a first nonwoven substrate, a second nonwoven substrate, and a plurality of elastic strands positioned intermediate the first and second nonwoven substrates. The elastic belts may define a plurality of apertures therethrough to create breathability in the elastic belts.

First claim

What is claimed is:

1. A method of forming absorbent articles on an absorbent article manufacturing line, the method comprising:
providing an elastic belt, wherein the elastic belt comprises a first nonwoven substrate, a second nonwoven substrate, and a plurality elastic strands positioned intermediate the first nonwoven substrate and the second nonwoven substrate, wherein the plurality of elastic strands are generally oriented in a machine direction, wherein the first nonwoven substrate has a first cross-directional width, wherein the second nonwoven substrate has a second cross-directional width, and wherein the first cross-directional width is larger than the second cross-directional width;
conveying the elastic belt in the machine direction on the absorbent article manufacturing line, wherein the elastic strands are strained in the machine direction;
attaching a portion of an absorbent article chassis to a portion of the second nonwoven substrate, wherein the absorbent article chassis comprises a topsheet, a backsheet, and an absorbent core disposed at least partially intermediate the topsheet and the backsheet;
folding a portion of the first nonwoven substrate that extends beyond the second nonwoven substrate in the cross-machine direction over a portion of the second nonwoven substrate to create a fold over region;
forming apertures through the elastic belt in areas within the fold over region and areas outside of the fold over region, but not in areas of overlap between the elastic belt and the absorbent core of the absorbent article chassis; and
forming compressed regions in a nip.

2. The method of claim 1 , wherein the elastic strands comprise a plurality of filaments.

3. The method of claim 1 , comprising forming three-dimensional elements in the elastic belt, wherein the three-dimensional elements are free of the apertures.

4. The method of claim 3 , wherein the three-dimensional elements are dome-shaped.

5. The method of claim 3 , wherein the three-dimensional elements comprise side walls that are continuous.

Assignees

• Procter & Gamble

Inventors

• Schneider Uwe
• Ibrahim Farihah
• Goyette Nicholas
• Nishikawa Masaharu

Classifications

• B26F3/10

  with heated rollers or discs · CPC title

• Y10T156/1057

  Subsequent to assembly of laminae · CPC title

• B29C53/24

  of plates or sheets · CPC title

• D04H1/70

  characterised by the method of forming fleeces or layers, e.g. reorientation of fibres · CPC title

• A61F13/496

  in the form of pants or briefs · CPC title