Absorbent article having a preformed member

• US 5,545,156 A
• Filed: 12/22/1994
• Issued: 08/13/1996
• Est. Priority Date: 12/22/1994
• Status: Expired due to Term

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Corporation
• Inventors: DiPalma, Joseph, Anjur, Sowmya S.
• Primary Examiner(s): Milano, Michael J.
• Application Number:
  US08/362,705
• Time in Patent Office: 600 Days
• Field of Search: 604/385.1, 604/378, 604/386, 604/387
• US Class Current: 604/385.23
• CPC Class Codes: A61F 13/4702 having a reinforcing member
• CPC Class Codes: A61F 13/4757 the means being located outside the perimeter of the absorbent core A61F13/4752 takes precedence
• CPC Class Codes: A61F 13/51401 characterised by the material
• CPC Class Codes: A61F 2013/51488 for napkins

Abstract

An absorbent article with an outer perimeter is disclosed having a cover, a liquid-impermeable preformed member and an absorbent core positioned therebetween. The preformed member has bulge for close body contact between the wearer and the absorbent article and a barrier means for intercepting body fluid migrating from the absorbent core toward the outer perimeter of the sanitary napkin. The bulge extends above the bodyfacing surface of the absorbent core while the barrier means encircles the absorbent core and extends above the periphery of the absorbent core.

Claims

1. An absorbent article having an outer perimeter and adapted to be worn adjacent to a wearer'"'"'s body, said absorbent article comprising:

a) a liquid-impermeable preformed member; and

b) an absorbent core secured to and superposed over a portion of said preformed member, said absorbent core having a bodyfacing surface and said preformed member having a bulge with an apex extending above said bodyfacing surface, said preformed member further having barrier means for intercepting body fluid migrating toward said outer perimeter, said barrier means encircling said absorbent core.

2. The absorbent article of claim 1 having a central longitudinal axis and said bulge is longitudinally oriented relative to said axis.

3. The absorbent article of claim 2 wherein said bulge is medially positioned along said central longitudinal axis.

4. The absorbent article of claim 1 wherein said absorbent core has an outer periphery and said barrier means has a height at least equal to said bodyfacing surface of said absorbent core at said outer periphery.

5. The absorbent article of claim 2 wherein said preformed member has a predetermined arcuate shape along said longitudinal axis.

6. The absorbent article of claim 1 wherein said preformed member is a flexible, thermal formable polyolefin.

7. The absorbent article of claim 6 wherein said polyolefin is a cross-linked foam.

8. The absorbent article of claim 7 wherein said polyolefin foam is polyethylene foam.

9. The absorbent article of claim 7 wherein said polyolefin foam is polypropylene foam.

10. The absorbent article of claim 7 wherein said preformed member has a caliper between about 0.5 mm to about 3 mm.

11. The absorbent article of claim 1 further comprising:

c) a liquid-permeable cover positioned adjacent to said bodyfacing surface; and

d) a wicking layer located between said absorbent core and said preformed member.

12. The absorbent article of claim 11 wherein said wicking layer extends above said bodyfacing surface of said absorbent core.

13. An absorbent article having an outer perimeter and adapted to be worn adjacent to a wearer'"'"'s body, said absorbent article comprising:

a) a liquid-permeable cover;

b) a liquid-impermeable preformed member having a garment-facing surface;

c) an absorbent core having a predetermined thickness of less than about 5 mm and positioned between said cover and said preformed member, said absorbent core having a bodyfacing surface and said preformed member having a bulge with an apex extending above said bodyfacing surface, said preformed member further having barrier means for intercepting body fluid migrating toward said outer perimeter, said barrier means encircling said absorbent core; and

d) a liquid-impermeable baffle secured to a portion of said garment-facing surface of said preformed member wherein a pocket is formed between said bulge and said baffle.

14. The absorbent article of claim 13 having a central longitudinal axis and said bulge is longitudinally oriented relative to said axis.

15. The absorbent article of claim 14 wherein said bulge is medially positioned along said central longitudinal axis.

16. The absorbent article of claim 13 wherein said absorbent core has an outer periphery and said barrier means has a height at least equal to said bodyfacing surface at said outer periphery.

17. The absorbent article of claim 13 wherein said preformed member is a flexible thermal formable cross-linked polyolefin foam.

18. The absorbent article of claim 13 wherein said bulge has a base and said baffle is secured to said base.

19. The absorbent article of claim 17 wherein said polyolefin foam is polyethylene foam having a caliper of about 0.5 mm to about 3 mm.

20. The absorbent article of claim 13 wherein said barrier means has an inner wall and a spaced apart outer wall joined together with an upper most portion, said upper most portion extending above said bodyfacing surface, said baffle extending across said garment-facing surface and being secured to said outer wall.

21. An absorbent article having an outer perimeter and adapted to be worn adjacent to a wearer'"'"'s body, said absorbent article comprising:

a) a liquid-permeable cover;

b) a liquid-impermeable preformed member;

c) a first absorbent core positioned between said cover and said preformed member, said first absorbent core having a bodyfacing surface and said preformed member having a bulge with an apex extending above said bodyfacing surface, said preformed member further having barrier means for intercepting body fluid migrating toward said outer perimeter, said barrier means having an inner wall and a distally spaced outer wall joined together;

d) a liquid-impermeable baffle secured to a portion of said garment-facing surface of said preformed member; and

e) a second absorbent core positioned between said bulge and said baffle, said bulge having an aperture for liquid absorption into said second absorbent core.

22. The absorbent article of claim 21 further comprising a third absorbent core positioned between said inner wall, said spaced apart outer wall and said baffle, said inner wall having a second aperture for liquid absorption into said third absorbent core.

23. The absorbent article of claim 22 wherein said second aperture is positioned below said bodyfacing surface of said first absorbent core.