Absorbent composite having selective regions for improved attachment

• US 20060069365A1
• Filed: 09/30/2004
• Published: 03/30/2006
• Est. Priority Date: 09/30/2004
• Status: Abandoned Application

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Inventors: Sperl, Michael Donald, Wilhelm, Hoa La, Adam, Gabriel Hammam, Jackson, David Martin, Hoang Nhan, Davis Dang, Fitzsimons, Barry Anthony
• Application Number:
  US10/955,430
• Publication Number:
  US 20060069365A1
• Time in Patent Office: Days
• US Class Current: 604/370
• CPC Class Codes: A61F 13/539 characterised by the connection of the absorbent layers with each other or with the outer layers

Abstract

An absorbent composite has at least one first region and at least one second region. The first region includes an elastomeric polymer at a first concentration and at least one absorbent material, such as superabsorbent material, and the second region includes an elastomeric polymer at a second concentration. The absorbent composite can provide improved attachment within an absorbent article, such as a stretchable absorbent article, even after fluid loading, while maintaining suitable absorbent properties.

Claims

1. An absorbent composite comprising at least one first region and at least one second region, wherein said first region comprises an absorbent material and a first elastomeric polymer at a first concentration, and said second region comprises a second elastomeric polymer at a second concentration, wherein said second concentration is higher than said first concentration.

2. The absorbent composite of claim 1 wherein said first elastomeric polymer is different from said second elastomeric polymer.

3. The absorbent composite of claim 1 wherein said at least one second region has a higher dry peel strength than said at least one first region.

4. The absorbent composite of claim 1 wherein said at least one second region has a higher wet peel strength than said at least one first region.

5. The absorbent composite of claim 1 wherein said absorbent material comprises at least a superabsorbent material.

6. The absorbent composite of claim 5 wherein said at least one first region comprises about 40-percent by weight or greater superabsorbent material and about 15-percent by weight or less elastomeric polymer, and wherein said at least one second region comprises greater than about 30-percent by weight elastomeric polymer.

7. The absorbent composite of claim 6 wherein said at least one first region comprises about 65-percent by weight or greater superabsorbent material.

8. The absorbent composite of claim 6 wherein said at least one first region comprises about 85-percent by weight or greater superabsorbent material

9. The absorbent composite of claim 6 wherein said at least one second region comprises about 70-percent by weight or greater elastomeric polymer.

10. The absorbent composite of claim 6 wherein said at least one second region comprises about 90-percent by weight or greater elastomeric polymer.

11. The absorbent composite of claim 1 wherein said at least one second region is located on an edge portion of said absorbent composite.

12. The absorbent composite of claim 11 wherein said at least one second region is continuous from a distal end portion of said absorbent composite to an opposing distal end portion of said absorbent composite.

13. The absorbent composite of claim 1 wherein said absorbent material comprises at least a fiber selected from the group consisting of natural fibers and synthetic fibers.

14. The absorbent composite of claim 1 wherein said at least one second region has a total surface area of about 50-percent or less than a total surface area of said absorbent composite.

15. The absorbent composite of claim 1 wherein said at least one second region has a total surface area of about 30-percent or less than a total surface area of said absorbent composite.

16. The absorbent composite of claim 1 wherein at least a portion of said at least one first region is located in at least one target zone of said absorbent composite.

17. The absorbent composite of claim 1 wherein said at least one second region is located outside at least one target zone of said absorbent composite.

18. The absorbent composite of claim 1 wherein said at least one first region has a first wet peel strength and said at least one second region has a second wet peel strength, wherein a ratio of said second wet peel strength value to said first wet peel strength value is greater than 1.

19. The absorbent composite of claim 1 wherein said at least one first region has a first wet peel strength and said at least one second region has a second wet peel strength, wherein a ratio of said second wet peel strength value to said first wet peel strength value is greater than 100.

20. The absorbent composite of claim 1 wherein said at least one first region has a first dry peel strength and said at least one second region has a second dry peel strength, wherein a ratio of said second dry peel strength value to said first dry peel strength value is greater than 1.

21. The absorbent composite of claim 1 wherein said at least one first region has a first dry peel strength and said at least one second region has a second dry peel strength, wherein a ratio of said second dry peel strength value to said first dry peel strength value is greater than 5.

22. An absorbent composite comprising at least one first region and at least one second region, wherein said at least one first region comprises about 60-percent by weight or greater superabsorbent material, about 35-percent by weight or less hydrophilic fibers, and about 15-percent by weight or less elastomeric polymer, wherein said at least one second region comprises about 80-percent by weight or greater elastomeric polymer, and wherein said second region is in the form of rectangular strips which run along at least two opposing edges of said absorbent composite.

23. The absorbent composite of claim 22 having a shape selected from the group consisting of rectangular shape, triangular shape, oval shape, race-track shape, I-shape, generally hourglass shape, and T-shape.

24. An absorbent article comprising:

A backsheet

A topsheet, and

An absorbent composite comprising at least one first region and at least one second region, wherein said first region comprises an absorbent material and a first elastomeric polymer at a first concentration, and said second region comprises a second elastomeric polymer at a second concentration, wherein said second concentration is higher than said first concentration.

25. The absorbent article of claim 24 wherein said absorbent composite is attached to said absorbent article at said at least one second region by an attachment means selected from the group consisting of ultrasonic, pressure, adhesive, sewing, autogenous, heat, hook-and-loop, and combinations thereof.

26. The absorbent article of claim 24 wherein said absorbent composite is attached to at least one of said topsheet and said backsheet.