Absorbent article having improved softness

Patent metadata

Field	Value
Publication number	US-10182950-B2
Application number	US-18238608-A
Country	US
Kind code	B2
Filing date	Jul 30, 2008
Priority date	Nov 7, 2007
Publication date	Jan 22, 2019
Grant date	Jan 22, 2019

Abstract

Disposable absorbent article comprising a chassis comprising a topsheet, a backsheet, and an absorbent core wherein the article has improved softness.

First claim

What is claimed is:

1. A disposable absorbent article comprising:
a chassis including a topsheet and a backsheet; and
an absorbent core comprising less than 10% by weight of cellulosic fibers, the absorbent core being located between the topsheet and the backsheet and including first and second absorbent layers, the first absorbent layer including a first substrate and the second absorbent layer including a second substrate, the first and second absorbent layers further including superabsorbent particulate polymer material deposited on the first and second substrates and thermoplastic adhesive material covering the absorbent particulate polymer material on the respective first and second substrates, the first and second absorbent layers combined together such that at least a portion of the thermoplastic adhesive material of the first layer contacts at least a portion of the thermoplastic adhesive material of the second absorbent layer, the absorbent particulate polymer material is disposed between the first and second substrates in an absorbent particulate polymer material area, and the absorbent particulate polymer material is substantially continuously distributed across the absorbent particulate polymer material area;
wherein the backsheet comprises a hydroenhanced nonwoven,
wherein the nonwoven comprises a surface coating, and wherein the surface coating is a surfactant.

2. The disposable absorbent article of claim 1 , wherein the article is a diaper.

3. The disposable absorbent article of claim 1 , wherein the nonwoven has a basis weight of at least about 22 gsm.

4. The disposable absorbent article of claim 1 , wherein the nonwoven has a basis weight of at least about 28 gsm.

5. The disposable absorbent article of claim 1 , wherein the nonwoven has a basis weight of at least about 30 gsm.

6. The disposable absorbent article of claim 1 , wherein the article has an in-bag compression measured as the ratio of an In-Bag stack height to Free stack height of less than about 50%.

7. The disposable absorbent article of claim 1 , wherein the article has an in-bag compression measured as the ratio of an In-Bag stack height to Free stack height of less than about 47%.

8. The disposable absorbent article of claim 1 , wherein the nonwoven has been treated by selfing.

9. The disposable absorbent article of claim 1 , wherein the nonwoven comprises fibers having different degrees of crimp or different types of crimp or both.

10. The disposable absorbent article of claim 1 , comprising a signal ingredient applied to the topsheet, the backsheet, or both.

11. The disposable absorbent article of claim 10 , wherein the signal ingredient has been applied as a lotion.

12. The disposable absorbent article of claim 1 , wherein the backsheet has a water vapor transmission rate of greater than 2000 g/24h/m 2 .

13. A disposable absorbent article comprising:
a chassis including a topsheet and a backsheet; and
an absorbent core comprising less than 10% by weight of cellulosic fibers, the absorbent core being located between the topsheet and the backsheet and including first and second absorbent layers, the first absorbent layer including a first substrate and the second absorbent layer including a second substrate, the first and second absorbent layers further including superabsorbent particulate polymer material deposited on the first and second substrates and thermoplastic adhesive material covering the absorbent particulate polymer material on the respective first and second substrates, the first and second absorbent layers combined together such that at least a portion of the thermoplastic adhesive material of the first layer contacts at least a portion of the thermoplastic adhesive material of the second absorbent layer, the absorbent particulate polymer material is disposed between the first and second substrates in an absorbent particulate polymer material area, and the absorbent particulate polymer material is substantially continuously distributed across the absorbent particulate polymer material area;
wherein the backsheet comprises a hydroenhanced nonwoven,
wherein the nonwoven comprises a surface coating, wherein the surface coating is a surfactant, and wherein the nonwoven is treated by a selfing mechanism.

14. The disposable absorbent article of claim 13 , wherein the topsheet comprises a nonwoven; wherein the nonwoven comprises a treatment selected from the group consisting of application of a fiber surface modifying agent, application of a surfactant, and treatment by a selfing mechanism.

15. A disposable absorbent article comprising:
a chassis including a topsheet and a backsheet; and
an absorbent located between the topsheet and the backsheet and including first and second absorbent layers, the first absorbent layer including a first substrate and the second absorbent layer including a second substrate, the first and second absorbent layers further including superabsorbent particulate polymer material deposited on the first and second substrates and thermoplastic adhesive material covering the absorbent particulate polymer material on the respective first and second substrates, the first and second absorbent layers combined together such that at least a portion of the thermoplastic adhesive material of the first layer contacts at least a portion of the thermoplastic adhesive material of the second absorbent layer, the absorbent particulate polymer material is disposed between the first and second substrates in an absorbent particulate polymer material area, and the absorbent particulate polymer material is substantially continuously distributed across the absorbent particulate polymer material area;
wherein the backsheet comprises a hydroenhanced nonwoven,
wherein the nonwoven comprises a surface coating, and wherein the surface coating is a surfactant.

16. The disposable absorbent article of claim 15 , wherein the article is a diaper.

17. The disposable absorbent article of claim 15 , wherein the nonwoven has a basis weight of at least about 22 gsm.

18. The disposable absorbent article of claim 15 , wherein the topsheet comprises a nonwoven; wherein the nonwoven comprises a treatment selected from the group consisting of application of a fiber surface modifying agent, application of a surfactant, and treatment by a selfing mechanism.

19. The disposable absorbent article of claim 15 , wherein the nonwoven has been treated by selfing.

20. The disposable absorbent article of claim 15 , wherein the nonwoven comprises fibers having different degrees of crimp or different types of crimp or both.

Assignees

• Lawson Kathleen Marie
• Hundorf Harald Hermann
• Beruda Holger
• Blessing Horst
• Dziezok Peter
• Krause Axel
• Schmidt Mattias
• Stelzig Lutz
• Procter & Gamble

Inventors

• Lawson Kathleen Marie
• Hundorf Harald Hermann
• Beruda Holger
• Blessing Horst
• Dziezok Peter
• Krause Axel
• Schmidt Mattias
• Stelzig Lutz

Classifications

• A61F13/51401

  characterised by the material · CPC title

• A61F13/5323 Primary

  having absorbent material located in discrete regions, e.g. pockets · CPC title

• A61F13/51405

  treated or coated, e.g. with moisture repellent agent · CPC title