Absorbent article having an oppositely biased attachment flap

• US 5,591,147 A
• Filed: 08/12/1994
• Issued: 01/07/1997
• Est. Priority Date: 08/12/1994
• Status: Expired due to Term

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Corporation
• Inventors: Stoeger, William G., Couture-Dorschner, Laurie, Hirt, Dede A., Dilnik, Rebecca L.
• Primary Examiner(s): Jones, Mary Beth
• Application Number:
  US08/289,814
• Time in Patent Office: 879 Days
• Field of Search: 604/385.1, 604/386, 604/387, 604/369, 604/392, 604/393, 604/400
• US Class Current: 604/369
• CPC Class Codes: A61F 13/476 characterised by encircling the crotch region of the undergarment
• CPC Class Codes: A61F 13/5616 using flaps, e.g. adhesive, for attachment to the undergarment leakage prevention means encirculing the crotch portion A61F13/476

Abstract

An absorbent article having at least one flap for attachment to the undergarment of a wearer is disclosed. The absorbent article includes biasing means for disposing the flap in an outward direction relative to the undergarment facing side of the absorbent article.

Claims

1. An absorbent article having a pair of longitudinal sides, said absorbent article comprising:

a) a fluid-pervious cover;

b) a fluid-impervious baffle;

c) an absorbent between said cover and said baffle;

d) a flap extending inwardly from and positioned adjacent to one of said longitudinal sides, said flap having a fixed portion secured to said baffle and a free portion adjacent to said fixed portion; and

e) biasing means for urging said free portion of said flap in an outward direction relative to said longitudinal side wherein said biasing means is positioned adjacent to said flap, said biasing means having a crush resistance from about 5 grams to about 75 grams.

2. The absorbent article of claim 1 further comprising a second inwardly extending flap adjacent to a second longitudinal side, said second flap having a second biasing means adjacent to said second flap for urging a free portion of said second flap in an outward direction relative to said second longitudinal side.

3. The absorbent article of claim 1 wherein said biasing means largest said free portion of said flap in a direction outwardly from said longitudinal side to form an angle ranging from about 20°

to less than about 270°

as measured between said baffle and said free portion of said flap.

4. The absorbent article of claim 1 wherein said biasing means is secured to said baffle.

5. The absorbent article of claim 1 wherein said biasing means is secured to said baffle and said flap.

6. The absorbent article of claim 1 wherein said biasing means is secured to said free portion of said flap.

7. The absorbent article of claim 1 wherein said fixed portion of said flap is secured to said baffle inward from said longitudinal side and said biasing means is secured to said baffle and said flap.

8. The absorbent article of claim 7 wherein said material is a polyolefinic foam.

9. The absorbent article of claim 7 wherein said three dimensional material has a thickness greater than about 0.25 millimeters.

10. The absorbent article of claim 1 wherein said biasing means includes a three dimensional material.

11. The absorbent article of claim 10 wherein said foam is a close-celled foam.

12. The absorbent article of claim 11 wherein said biasing means is a resilient material.

13. The absorbent article of claim 11 wherein said biasing means is an elastomeric material.

14. The absorbent article of claim 11 wherein said flap has a predetermined length and said biasing means substantially extends the length of said flap.

15. An absorbent article having a pair of longitudinal sides, transverse ends, a body-facing surface, and an undergarment-facing surface, said absorbent article comprising:

a) a fluid-pervious cover;

b) a fluid-impervious baffle;

c) an absorbent between said cover and said baffle;

d) a flap adjacent to each of said longitudinal sides, said flaps extending inwardly from said longitudinal sides, each of said flaps having a fixed portion and a free portion wherein said fixed portion is secured to said undergarment-facing surface and said free portion is adjacent to said fixed portion; and

e) biasing means positioned adjacent to each flap for urging said flaps in an outward direction relative to said longitudinal side, said biasing means having a crush resistance from about 5 grams to about 75 grams.

16. The absorbent article of claim 15 wherein said biasing means includes a resilient, three dimensional polyolefinic foam affixed to said baffle and said flap.

17. The absorbent article of claim 16 wherein said foam has a thickness ranging from about 0.25 millimeters to about 10 millimeters.

18. The absorbent article of claim 15 wherein said free portion of said flap has a predetermined surface area adjacent to said biasing means and said biasing means is affixed to at least about 3 percent of said surface area.

19. The absorbent article of claim 15 wherein said biasing means is affixed to said baffle at an affixation point that is spaced from said fixed portion of said flap by a distance of less than about 5 millimeters.

20. A sanitary napkin having a pair of longitudinal sides, transverse ends, a body-facing surface, and an undergarment-facing surface, said absorbent article comprising:

a) a fluid-pervious cover;

b) a fluid-impervious baffle;

c) an absorbent element between said cover and said baffle;

d) a flap adjacent to each of said longitudinal sides;

e) garment adhesive secured to said baffle toward said undergarment-facing surface; and

e) biasing means adjacent to each flap for disposing said flaps in an outward direction relative to said longitudinal side wherein said means prevents said flaps from folding inward and prematurely attaching to said garment adhesive said biasing means having a crush resistance from about 5 grams to about 75 grams.