Expandable absorbent garment

• US 6,733,484 B2
• Filed: 05/14/2001
• Issued: 05/11/2004
• Est. Priority Date: 05/14/2001
• Status: Expired due to Term

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Inventors: Van Gompel, Paul T., Gross, Jacqueline A., Morman, Michael T., Huang, Yung H., Fell, David A., Roessler, Thomas H.
• Primary Examiner(s): Lo, Weilun
• Assistant Examiner(s): Anderson, Catharine L.
• Application Number:
  US09/855,028
• Publication Number:
  US 20030004487A1
• Time in Patent Office: 1,093 Days
• Field of Search: 604/385.01, 604/385.16, 604/385.21, 604/385.22, 604/385.23, 604/385.3, 604/378
• US Class Current: 604/385.16
• CPC Class Codes: A61F 13/51464 being stretchable or elastomeric
• CPC Class Codes: A61F 13/53436 having an undulated or corrugated cross-section
• CPC Class Codes: A61F 13/539 characterised by the connection of the absorbent layers with each other or with the outer layers
• CPC Class Codes: A61F 2013/1539 being expandable
• CPC Class Codes: Y10T 156/1051 by folding

Abstract

An absorbent garment comprising a longitudinally extending and laterally expandable absorbent composite having opposite ends and opposite side regions. The absorbent composite comprises a backsheet, a topsheet and a retention portion disposed between the backsheet and the topsheet. In one preferred embodiment, the backsheet and retention portion each comprise at least one fold formed along at least one of the opposite side regions, with the folds being interfolded. A pair of front body panels are attached to the opposite side regions of the absorbent composite adjacent one of the opposite ends of said absorbent composite and a pair of rear body panels are attached to the opposite side regions adjacent the other of the opposite ends of the absorbent composite. In a preferred embodiment, the front and rear body panels are joined to form a pair of side body panels. A method for using the absorbent garment also is provided, together with a method for assembling the absorbent garment.

Claims

1. An expandable absorbent garment comprising:

an absorbent composite having a length, opposite ends and opposite side regions, said absorbent composite comprising a backsheet, a topsheet and a retention portion disposed between said backsheet and said topsheet, wherein said backsheet comprises at least one fold formed along at least one of said opposite side regions, wherein said absorbent composite is laterally expandable along at least said opposite ends thereof, wherein said at least one fold of said backsheet is unfoldable along at least said opposite ends of said absorbent composite;

a pair of front body panels connected to said opposite side regions adjacent one of said opposite ends of said absorbent composite; and

a pair of rear body panels connected to said opposite side regions adjacent said other of said opposite ends of said absorbent composite.

2. The invention of claim 1 wherein said retention portion comprises at least one fold formed along at least one of said opposite side regions, wherein said at least one fold of said retention portion is interfolded with said at least one fold of said backsheet.

3. The invention of claim 2 wherein said backsheet and said retention portion are each laterally expandable between at least a folded configuration, wherein said backsheet and said retention portion are interfolded, and an expanded configuration, wherein said backsheet and said retention portion are substantially flat, and wherein said absorbent composite has a first width when in said folded configuration and wherein said absorbent composite has a second width when in said expanded configuration.

4. The invention of claim 3 wherein said opposite ends of said absorbent composite are capable of being independently, laterally expanded to said expanded configuration while at least an intermediate portion of said absorbent composite remains in said folded configuration.

5. The invention of claim 3 wherein the difference between said second width and said first width divided by said first width is greater than 0.1.

6. The invention of claim 1 wherein said pairs of front and rear body panels are joined along opposite ends thereof to form a pair of opposite side body panels.

7. The invention of claim 1 further comprising an extensible cover disposed around an outer surface of said absorbent composite.

8. The invention of claim 7 wherein said extensible cover provides an elongation of at least about 1 cm when subjected to a tensile force of 11.8 g/cm.

9. The invention of claim 7 wherein said extensible cover provides a sustained deformation of at least about 20% when subjected to a tensile force of 19.70 g/cm and then allowed to relax, after removal of said tensile force, for a period of 1 minute.

10. The invention of claim 2 wherein said topsheet comprises at least one fold interfolded with said back sheet and said retention portion.

11. The invention of claim 1 wherein said topsheet is extensible.

12. The invention of claim 11 wherein said topsheet provides an elongation of at least about 1 cm when subjected to a tensile force of 11.8 g/cm.

13. The invention of claim 11 wherein said top sheet provides a sustained deformation of at least about 20% when subjected to a tensile force of 19.70 g/cm and then allowed to relax, after removal of said tensile force, for a period of 1 minute.

14. The invention of claim 1 further comprising an elastic member disposed along at least a portion of one of said opposite side regions of said absorbent composite.

15. The invention of claim 1 further comprising a barrier layer disposed between said backsheet and said retention portion.

16. The invention of claim 1 further comprising an elastic member connected to and extending laterally along the opposite ends of said absorbent composite.

17. The invention of claim 1 wherein said pairs of front and rear body panels are made of an elastic material.

18. The invention of claim 1 wherein each of said front and rear body panels extend laterally outward from said side regions of said opposite ends of said absorbent composite respectively.

19. An expandable absorbent garment comprising:

absorbent composite having a length, opposite ends and opposite side regions, said absorbent composite comprising a backsheet, a topsheet and a retention portion disposed between said backsheet and said topsheet, wherein said backsheet comprises a pleat formed along each of said opposite side regions and wherein said retention portion comprises a pleat formed along said opposite side regions, wherein said backsheet and said retention portion are each laterally expandable at said opposite ends of said absorbent composite between at least a folded configuration, wherein said pleat of said backsheet and said pleat of said retention portion are interfolded, and an expanded configuration, wherein said backsheet and said retention portion are substantially flat, and wherein said absorbent composite has a first width when in said folded configuration and wherein said absorbent composite has a second width when in said expanded configuration; and

a pair of front body panels connected to said opposite side regions adjacent one of said opposite ends of said absorbent composite; and

a pair of rear body panels connected to said opposite side regions adjacent said other of said opposite ends of said absorbent composite.

20. The invention of claim 19 wherein said backsheet extends the length of said absorbent composite.

21. The invention of claim 19 wherein said opposite ends of said absorbent composite are capable of being independently, laterally expanded to said expanded configuration while at least an intermediate portion of said absorbent composite remains in said folded configuration.

22. The invention of claim 19 wherein said pairs of front and rear body panels are joined along opposite ends thereof to form a pair of opposite side body panels.

23. The invention of claim 19 further comprising an extensible cover disposed around an outer surface of said absorbent composite.

24. The invention of claim 19 wherein said topsheet comprises a pleat interfolded with one of said retention portion pleats.

25. The invention of claim 19 wherein said topsheet is extensible.

26. The invention of claim 19 further comprising a barrier layer disposed between said backsheet and said retention portion.

27. The invention of claim 19 wherein said pairs of front and rear body panels are made of an elastic material.

28. The invention of claim 19 wherein each of said front and rear body panels extend laterally outward from said side regions of said opposite ends of said absorbent composite respectively.