Absorbent product with reinforcing member to resist deformation

• US 4,865,597 A
• Filed: 07/06/1987
• Issued: 09/12/1989
• Est. Priority Date: 07/06/1987
• Status: Expired due to Term

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Corporation
• Inventors: Handler, Michael D., Mason, Stanley I. Jr.
• Primary Examiner(s): Kamen, Noah P.
• Application Number:
  US07/069,690
• Time in Patent Office: 799 Days
• Field of Search: 604/366, 604/369, 604/370, 604/371, 604/373, 604/385.1, 604/386, 604/358, 604/367, 604/378
• US Class Current: 604/385.31
• CPC Class Codes: A61F 13/4702 having a reinforcing member
• CPC Class Codes: A61F 13/472 specially adapted for female use A61F13/474, A61F13/475, A61F13/476 take precedence
• CPC Class Codes: A61F 2013/4512 folded in special shape during use A61F13/534, A61F13/551, A61F13/56, A61F13/15747 take precedence
• CPC Class Codes: A61F 2013/4708 Panty-liner
• CPC Class Codes: A61F 2013/49076 as "I"-shaped
• CPC Class Codes: A61F 2013/8476 with various devices or method

Abstract

A reinforcing member is disclosed that will maintain the shape of a product for absorption of human exudate, such as a feminine hygiene pad, diaper or incontinent garment during use. The flexibly stiff reinforcing member will return the pad to its desired shape, even after it has been deformed by movement of the wearer. In one form, the reinforcing member is a flat strip of polyethylene that extends around the periphery of the product. In other embodiments, the resilient reinforcing member may be present only in the periphery of the center or crotch portion of the product. The strength and flexibility required of the reinforcing member will vary depending upon the product stiffness prior to being reinforced and the use for which the product is designed. The reinforcing element is a flexibly stiff, resilient, substantially nonelastic material.

Claims

1. A device for absorption of human exudate comprising:

(a) a fluid absorbent having a first surface facing the body of a user and a second opposite surface;

(b) a liquid permeable cover surrounding said absorbent;

(c) a liquid-impermeable baffle positioned between said absorbent and said cover which substantially extends over said second surface;

(d) a bonded carded web positioned between said cover and said first surface which facilitates distribution of exudate over said first surface; and

(e) reinforcing means for shaping said device to conform to the body of a user and thereby more effectively absorb human exudate, said reinforcing means having a predetermined arcuate shape prior to being assembled thereby imparting a cup-like shape to said device and being a structural framework which is positioned between said bonded carded web and said first surface and which has at least one opening formed therethrough.

2. The device of claim 1 wherein said reinforcing means is a thin, flexibly stiff, substantially nonelastic structural framework.

3. The device of claim 1 wherein said reinforcing means has a plurality of openings formed therethrough, the largest openings being located about a midpoint of said device and said reinforcing means having rounded ends.

4. The device of claim 1 wherein said reinforcing means has an outer profile which generally corresponds to the exterior profile of said device.

5. The device of claim 1 wherein said reinforcing means has at least two different size openings formed therethrough.

6. A device for absorption of human exudate comprising:

(a) a fluid absorbent having a first surface facing the body of a user and a second opposite surface;

(b) a liquid permeable cover surrounding said absorbent;

(c) a liquid-impermeable baffle positioned between said absorbent and said cover which substantially extends over said second surface;

(d) an adhesive disposed on a lower surface of said cover for attaching said device to an undergarment;

(e) a protectible strip covering said adhesive which is designed to be removed prior to use of said device; and

(f) reinforcing means for shaping said device to conform to the body of a user and thereby more effectively absorb human exudate, said reinforcing means being a structural framework which is embedded within said absorbent and encompasses three axially aligned openings, the center opening being larger than the other openings.

7. The device of claim 6 wherein said reinforcing means is molded to said absorbent.

8. The device of claim 6 wherein said reinforcing means has an initial curved profile prior to being assembled thereby imparting a cup-like shape to said device.

9. The device of claim 25 wherein said reinforcing means has an hourglass shape and at least two transverse members located in close proximity to the ends thereof.

10. A device for absorption of human exudate comprising:

(a) a fluid absorbent having a first surface facing the body of a user and a second opposite surface;

(b) a liquid permeable cover surrounding said absorbent;

(c) a liquid-impermeable baffle positioned between said absorbent and said cover which substantially extends over said second surface;

(d) an adhesive disposed on a lower surface of said cover for attaching said device to an undergarment;

(e) a protectible strip covering said adhesive which is designed to be removed prior to use of said device; and

(f) reinforcing means for shaping said device to conform to the body of a user and thereby more effectively absorb human exudate, said reinforcing means being a structural framework which extends about a peripheral surface of said device and is a single member having a hollow tubular cross-section with semi-circular shaped ends, said reinforcing means being positioned between said liquid-impermeable baffle and said second surface and which has at least two different size openings formed therethrough.

11. The device of claim 10 wherein said reinforcing means is aligned with the exterior periphery of said absorbent.

12. The device of claim 10 wherein said reinforcing means has a curved shape prior to being assembled thereby imparting a cup-like shape to said device.

13. The device of claim 10 wherein said reinforcing means has at least one transverse member adjacent each end thereof which assist in controlling the way said reinforcing means deforms during use.

14. A device for absorption of human exudate comprising:

(a) first and second independent fluid absorbents;

(b) a liquid permeable cover surrounding said first absorbent and partially surrounding said second absorbent;

(c) a liquid-impermeable baffle positioned adjacent to said second absorbent and sealed to said cover to form an enclosure about said first and second absorbents;

(d) an adhesive disposed on a lower surface of said cover for attaching said device to an undergarment;

(e) a protectible strip covering said adhesive which is designed to be removed prior to use of said device; and

(f) reinforcing means for shaping said device to conform to the body of a user and thereby more effectively absorb human exudate, said reinforcing means being a structural framework which is positioned between said first and second absorbents and which has a profile substantially similar to the exterior profile of said device, said reinforcing means further having three axially aligned openings, the center opening being the largest.

15. The device of claim 14 wherein said reinforcing means is a flat member having an hourglass shape with a hollow interior and a central longitudinal axis coaxially aligned with a longitudinal axis of said device.

16. The device of claim 15 wherein said reinforcing means has a transverse member adjacent each end thereof which permits said device to collapse about a midpoint.

17. The device of claim 14 wherein said reinforcing means is located in a central portion of said device.

18. The device of claim 14 wherein said reinforcing is located slightly within an outer edge of said first and second absorbents.

19. The device of claim 14 wherein said reinforcing means is willowy and can bend under pressure while being resilient enough to return to its original shape when pressure is released.

20. The device of claim 14 wherein said reinforcing means is polyethylene having a thickness of between about 0.005 and 0.03 inches.

21. A device for absorption of human exudate comprising:

(a) a fluid absorbent having a first surface facing the body of a user and a second opposite surface;

(b) a liquid permeable cover partially surrounding said absorbent while completely covering said first surface;

(c) a liquid-impermeable baffle positioned adjacent to said second surface and sealed to said cover to form an enclosure completely around said absorbent; and

(d) arcuate shaped reinforcing means for imparting a cup-like shape to said device to conform to the body of a user and thereby more effectively absorb human exudate, said reinforcing means being a structural framework which is positioned between said absorbent and said liquid-impermeable baffle and which generally conforms to a portion of the exterior of said device, said reinforcing means further including one or more openings formed therethrough which facilitates bendability along a horizontal axis.

22. The device of claim 21 wherein said reinforcing means is located outside of the exterior profile of said absorbent.

23. A device for absorption of human exudate comprising:

(a) a fluid absorbent having a first surface facing the body of a user and a second opposite surface;

(b) a liquid permeable cover partially surrounding said absorbent while completely covering said first surface;

(c) a liquid-impermeable baffle positioned adjacent to said second surface of said absorbent and sealed to said cover to form an enclosure completely around said absorbent; and

(d) reinforcing means for shaping said device to conform to the body of a user and thereby effectively absorb human exudate, said reinforcing means being a structural framework which is positioned on the outside of said liquid-impermeable baffle distal said absorbent and is attached thereto by an adhesive, said reinforcing means including three axially aligned openings formed therethrough, the center openings being the largest and located about a central area of said device for facilitating bending thereof.