Multiple sliver absorbent product

• US 5,582,603 A
• Filed: 03/09/1995
• Issued: 12/10/1996
• Est. Priority Date: 02/22/1989
• Status: Expired due to Term

• Current Assignee: McNeil-PPC Incorporated (Johnson & Johnson)
• Original Assignee: McNeil-PPC Incorporated (Johnson & Johnson)
• Inventors: Dabroski, Winifred C., Difilippantonio, Michelle L.
• Primary Examiner(s): Weiss, John G.
• Assistant Examiner(s): ZUTTARELLI, ANTHONY
• Application Number:
  US08/401,334
• Time in Patent Office: 642 Days
• Field of Search: 604/358-360, 604/378-380, 604/381-382, 604/385.1
• US Class Current: 604/380
• CPC Class Codes: A61F 13/536 having discontinuous areas of compression
• 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 13/8405 Additives, e.g. for odour, disinfectant or pH control

Abstract

This invention relates to an improved multiple sliver absorbent product having a bottom sliver with low density edges. The low density edges engage a low density upper sliver and provide traction between the slivers which aids in stabilizing the product.

Claims

1. An absorbent product for absorbing body fluid comprising:

a) a central absorbent core comprising a fibrous lower sliver and a fibrous top sliver, said lower sliver having a densified central portion, transverse ends and longitudinal edges, the longitudinal edges having a density lower than that of the densified central portion, and said top sliver having a density lower than that of the densified central portion of the lower sliver, such that the fibers of the longitudinal edges of the lower sliver and the fibers of the top sliver engage to prevent slippage between the slivers;

b) a fluid permeable cover; and

c) a fluid impermeable barrier.

2. A product according to claim 1 wherein said top sliver contains an efficacious amount of active odor control agent.

3. A product according to claim 2 wherein said active odor control agent is sodium bicarbonate.

4. A product according to claim 3 wherein said top sliver contains about 5 mg to about 1 g of sodium bicarbonate.

5. A product according to claim 2 wherein said active odor control agent is a powder disposed in an elliptical pattern within the top sliver.

6. A product according to claim 1 wherein the transverse ends of said top sliver are tapered.

7. A product according to claim 1 wherein said top sliver has a surface area and said lower sliver has a surface area and wherein the surface area of said lower sliver is between about 30 and 90% of the surface area of the top sliver.

8. A product according to claim 1 wherein the longitudinal edges of the bottom sliver have a density between about 0.25 and about 0.5 g/in³.

9. A product according to claim 8 wherein the density of the top sliver is between about 0.4 and about 0.6 g/in³.

10. A product according to claim 8 wherein the density of the central portion of said bottom sliver is from about 0.5 and about 2 g/in³.

11. A product according to claim 1 wherein the absorbent product is a sanitary napkin.

12. A product according to claim 1 wherein the absorbent product is a wound dressing.

13. A product according to claim 1 wherein the absorbent product is an incontinence device.

14. A product according to claim 1 wherein the absorbent product is a diaper.