Pre-strained laminates and methods for making the same

Patent metadata

Field	Value
Publication number	US-10350119-B2
Application number	US-201514933030-A
Country	US
Kind code	B2
Filing date	Nov 5, 2015
Priority date	Nov 6, 2014
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

A laminate comprising a first nonwoven layer comprising a plurality of apertures and a second nonwoven layer is provided. One of the first and second nonwoven layers is a pre-strained layer and is joined to the other one of the first and second nonwoven layers. The other one of the first and second nonwoven layers is a non-pre-strained layer. The pre-strained layer and the non-pre-strained layer together form a three-dimensional laminate.

First claim

What is claimed is:

1. An absorbent article comprising:
a liquid permeable topsheet;
a laminate; and
an absorbent core positioned at least partially intermediate the topsheet and the laminate;
wherein the laminate comprises:
a first nonwoven layer comprising a plurality of apertures;
a second, non-apertured film layer;
wherein the second film layer is a pre-strained layer and is joined to the first nonwoven layer in a pre-strained condition, and wherein the first nonwoven layer is a non-pre-strained layer; and
wherein the second film pre-strained layer and the first nonwoven non-pre-strained layer together form a three-dimensional laminate.

2. The absorbent article of claim 1 , wherein the plurality of apertures of the first nonwoven layer have an Average Absolute Feret Angle of at least about 20 degrees, but less than about 70 degrees, according to the Aperture Test.

3. The absorbent article of claim 1 , wherein the plurality of apertures of the first nonwoven layer have Interaperture Distances, according to the Aperture Test, wherein the Interaperture Distances have a distribution having a mean and a median, and wherein the mean is greater than the median.

4. The absorbent article of claim 1 , wherein the first nonwoven layer has an Effective Open Area in the range of about 5% to about 50%, according to the Aperture Test.

5. The absorbent article of claim 1 , wherein the first nonwoven layer and second film layer are joined to each other by a pattern of mechanical or adhesive bonds.

6. The absorbent article of claim 1 , wherein the second film layer is pre-strained by at least 5% of its length and width.

7. The absorbent article of claim 6 , wherein the laminate is free of any elastic strands or elastic films, and wherein the apertures are non-homogeneous.

8. A package comprising a plurality of the absorbent articles o-f claim 1 , wherein the package has an In-Bag Stack Height in the range of about 70 mm to about 105 mm, according to the In-Bag Stack Height Test.

9. An absorbent article comprising:
a liquid permeable topsheet;
a laminate; and
an absorbent core positioned at least partially intermediate the topsheet and the laminate;
wherein the laminate comprises:
a first nonwoven layer comprising a plurality of apertures;
a second, non-apertured film layer;
wherein the second film layer is a pre-strained layer and is joined to the first nonwoven layer in a pre-strained condition, and wherein the second film layer is pre-strained by at least 5% of its length and by at least 5% of its width;
wherein the first nonwoven layer is a non-pre-strained layer; and
wherein the second film pre-strained layer and the first nonwoven non-pre-strained layer together form a three-dimensional laminate.

10. The absorbent article of claim 9 , wherein the plurality of apertures of the first nonwoven layer have an Average Absolute Feret Angle of at least about 20 degrees, but less than about 70 degrees, according to the Aperture Test.

11. The absorbent article of claim 9 , wherein the plurality of apertures of the first nonwoven layer have Interaperture Distances, according to the Aperture Test, wherein the Interaperture Distances have a distribution having a mean and a median, and wherein the mean is greater than the median.

12. The absorbent article of claim 9 , wherein the first nonwoven layer has an Effective Open Area in the range of about 5% to about 50%, according to the Aperture Test.

13. The absorbent article of claim 9 , wherein the first nonwoven layer and second film layer are joined to each other by a pattern of mechanical or adhesive bonds.

14. The absorbent article of claim 9 , wherein the apertures are non-homogenous apertures.

15. The absorbent article of claim 9 , wherein the laminate is free of any elastic strands or elastic films.

16. A package comprising a plurality of the absorbent articles of claim 9 , wherein the package has an In-Bag Stack Height in the range of about 70 mm to about 105 mm, according to the In-Bag Stack Height Test.

17. An absorbent article comprising:
a liquid permeable topsheet;
a laminate; and
an absorbent core positioned at least partially intermediate the topsheet and the laminate;
wherein the laminate comprises:
a first nonwoven layer comprising a plurality of non-homogeneous apertures;
a second, non-apertured film layer;
wherein the second film layer is a pre-strained layer and is joined to the first nonwoven layer in a pre-strained condition, and wherein the first nonwoven layer is a non-pre-strained layer; and
wherein the second film pre-strained layer and the first nonwoven non-pre-strained layer together form a three-dimensional laminate.

18. The absorbent article of claim 17 , wherein the laminate is free of any elastic strands or elastic films.

19. The absorbent article of claim 17 , wherein the plurality of apertures of the first nonwoven layer have an Average Absolute Feret Angle of at least about 20 degrees, but less than about 70 degrees, according to the Aperture Test.

20. A package comprising a plurality of the absorbent articles of claim 17 , wherein the package has an In-Bag Stack Height in the range of about 70 mm to about 105 mm, according to the In-Bag Stack Height Test.

Assignees

• Procter & Gamble

Inventors

• Mullane Timothy Ian
• Arora Kelyn Anne
• Orr Jill Marlene
• Roe Donald Carroll
• Schutte Jennifer
• Strube John Brian
• Tapp Ann Cecilia
• Walther Rachael Eden
• Bicking Amanda Margaret
• Dusold Jennifer Lynn
• Porter Margaret Elizabeth

Classifications

• D04H3/147

  Composite yarns or filaments · CPC title

• Y10T428/24793

  Comprising discontinuous or differential impregnation or bond · CPC title

• B32B2250/04

  4 layers · CPC title

• B32B2250/20

  All layers being fibrous or filamentary · CPC title

• Y10T428/24826

  Spot bonds connect components · CPC title