Absorbent article with conforming features

Patent metadata

Field	Value
Publication number	US-11890171-B2
Application number	US-201816181621-A
Country	US
Kind code	B2
Filing date	Nov 6, 2018
Priority date	Nov 6, 2017
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

A disposable absorbent article has a topsheet; a backsheet; an absorbent core disposed between the topsheet and the backsheet; and a first plurality of conforming features in at least the absorbent core or a combination of the absorbent core and the topsheet. At least a portion of the are depressions, wherein the depressions have a depression centerline bisecting a length and/or width of the depression. A first strut forms a first sidewall of the depression opposite a second sidewall of the depression formed by a second strut, wherein neither of the first strut nor the second strut extend longitudinally and/or laterally beyond the depression centerline by more than 0.75 mm.

First claim

The invention claimed is:

1. A disposable absorbent article having a longitudinal centerline and a lateral centerline, the disposable absorbent article further comprising:
a topsheet;
a backsheet;
an absorbent core disposed between the topsheet and the backsheet; and
a first plurality of conforming features and a first plurality of discrete nodes in at least the absorbent core or a combination of the absorbent core and the topsheet, the conforming features comprising long fiber networks, wherein the long fiber networks comprise about 15% to about 50% by weight of long fibers, at least a portion of the conforming features comprising a depression, wherein the depression comprises a bottom and a depression centerline bisecting a length and/or width of the depression, a first strut forming a first sidewall of the depression opposite a second sidewall of the depression formed by a second strut, wherein neither of the first strut or second strut extend longitudinally and/or laterally beyond the depression centerline by more than 0.75 mm, wherein the conforming features do not include embossing features.

2. The disposable absorbent article of claim 1 , further comprising a fluid management layer disposed between the topsheet and the absorbent core, and wherein the first plurality of conforming features is comprised by the combination of the absorbent core, the fluid management layer, and the topsheet.

3. The disposable absorbent article of claim 2 , wherein the absorbent core is unitary airlaid absorbent core comprising a plurality of cellulosic fibers and super absorbent particles, and wherein a ratio of bending stiffness to wet recovery energy is less than 13.

4. The disposable absorbent article of claim 2 , wherein the fluid management layer comprises an airlaid material comprising a plurality of cellulosic fibers, wherein the absorbent article has a ratio of bending stiffness to wet recovery energy that is less than 15 as measured by the three point bending test and the bunch compression test as described herein.

5. The disposable absorbent article of claim 2 , wherein the absorbent article comprises a coformed absorbent core comprising continuous fibers and wherein the absorbent article has a ratio of bending stiffness to wet recovery energy that is less than 4 as measured by the three point bending test and the bunch compression test as described herein.

6. The disposable absorbent article of claim 2 , wherein the absorbent article has a blot to caliper ratio of less than 11, as measured by the blot test and caliper test.

7. The disposable absorbent article of claim 2 , wherein the absorbent article has a blot to caliper ratio of less than 19, and wherein the absorbent core comprises an airlaid absorbent core.

8. The disposable absorbent article of claim 2 , wherein the absorbent core is a unitary airlaid absorbent core comprising a plurality of cellulosic fibers and super absorbent particles, and wherein a ratio of bending stiffness to caliper is less than 15.

9. The disposable absorbent article of claim 2 , wherein the fluid management layer is an airlaid material comprising a plurality of cellulose fibers, wherein the disposable absorbent article has a ratio of bending stiffness to caliper of less than 5.

10. The disposable absorbent article of claim 2 , wherein the absorbent core is a coformed absorbent core comprising continuous fibers, and wherein the absorbent article has a ratio of bending stiffness to caliper of 4 or less.

11. The disposable absorbent article of claim 2 , wherein the absorbent core is a unitary airlaid absorbent core comprising a plurality of cellulosic fibers and super absorbent particles, and wherein the disposable absorbent article has a residual fluid in the top 0.5 mm of less than 200 μl as measured by the NMR mouse method.

12. The disposable absorbent article of claim 2 , wherein the fluid management layer is an airlaid material comprising a plurality of cellulose fibers, wherein the disposable absorbent article has a residual fluid in the top 0.5 mm of less than 20 μl as measured by the NMR mouse method.

13. The disposable absorbent article of claim 2 , wherein the absorbent core is a coformed absorbent core comprising continuous fibers, and wherein the absorbent article has a residual fluid in the top 0.5 mm of less than 7 μl and a free fluid acquisition time of less than 100 seconds as measured by the NMR mouse method and the Free Fluid Acquisition tests, respectively.

14. The disposable absorbent article of claim 2 , wherein the absorbent article has a wet recovery energy of at least 0.4 mJ, as measured by the bunch compression test described herein.

15. The disposable absorbent article of claim 1 , wherein the first plurality of conforming features are comprised by the absorbent core.

16. The disposable absorbent article of claim 1 , wherein the first plurality of conforming features are comprised by the combination of the absorbent core and a fluid management layer.

17. The disposable absorbent article of claim 16 , wherein the absorbent core comprises a first basis weight, wherein the fluid management layer comprises a second basis weight, and wherein the second basis weight is at least 25 percent of the first basis weight.

18. The disposable absorbent article of claim 17 , wherein the fluid management layer comprises staple length fibers.

19. The disposable absorbent article of claim 18 , wherein the fluid management layer is hydroentangled or needlepunched.

20. The disposable absorbent article of claim 16 , wherein the fluid management layer comprises cellulose fibers and a plurality of bondable fibers, wherein the absorbent core comprises a first basis weight and the bondable fibers comprise a second basis weight, wherein the second basis weight is at least 25 percent of the first basis weight.

21. The disposable absorbent article of claim 1 , wherein the topsheet comprises a hydrophobic nonwoven material that has a basis weight of more than 20 gsm.

22. The disposable absorbent article of claim 1 , wherein the average length of the long fibers is greater than about 6 mm.

23. A disposable absorbent article having a longitudinal centerline and a lateral centerline, the disposable absorbent article further comprising:
a topsheet;
a backsheet;
an absorbent core disposed between the topsheet and the backsheet; and
a first plurality of conforming features and a first plurality of discrete nodes in at least the absorbent core or a combination of the absorbent core and the topsheet, the conforming features comprising long fiber networks, wherein the average length of fibers of the long fiber network is greater than about 6 mm, at least a portion of the conforming features comprising a depression, wherein the depression comprises a bottom and a depression centerline bisecting a length and/or width of the depression, a first strut forming a first sidewall of the depression opposite a second sidewall of the depression formed by a second strut, wherein neither of the first strut or second strut extend longitudinally and/or laterally beyond the depression centerline by more than 0.75 mm, wherein the conforming features do not include embossing features.

Assignees

• Procter & Gamble
• Procter & Gamble

Inventors

• Bewick-Sonntag Christopher Philip
• Poondru Shirdish
• Hammons John Lee
• Arora Kelyn Anne

Classifications

• A61F13/15699 Primary

  Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs · CPC title

• A61F13/15203

  Properties of the article, e.g. stiffness or absorbency (chemical aspects A61L15/00) · CPC title

• A61F13/15707

  Mechanical treatment, e.g. notching, twisting, compressing, shaping · CPC title

• A61F13/15723

  Partitioning batts; Cutting · CPC title

• A61F13/15731

  Treating webs, e.g. for giving them a fibrelike appearance, e.g. by embossing · CPC title