Absorbent composition and method of assembling

• US 20030148694A1
• Filed: 02/05/2003
• Published: 08/07/2003
• Est. Priority Date: 02/05/2002
• Status: Abandoned Application

• Current Assignee: Farid F. Ghiam
• Original Assignee: Farid F. Ghiam
• Inventors: Ghiam, Farid F.
• Application Number:
  US10/358,865
• Publication Number:
  US 20030148694A1
• Time in Patent Office: Days
• US Class Current: 442/394
• CPC Class Codes: A61F 13/15699 Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs
• 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: Y10T 442/3854 Woven fabric with a preformed polymeric film or sheet
• CPC Class Codes: Y10T 442/60 Nonwoven fabric [i.e., nonwoven strand or fiber material]
• CPC Class Codes: Y10T 442/629 Composite strand or fiber material
• CPC Class Codes: Y10T 442/674 Nonwoven fabric with a preformed polymeric film or sheet

Abstract

An absorbent composition utilizes extrusion lamination of a backsheet to an absorbent material for the creation of absorbent articles. The method of manufacturing the absorbent composition includes the steps of combining a topsheet material with an absorbent material and laminating a backsheet to said absorbent material.

Claims

1. A process for assembly of an absorbent composition comprising the steps of:

bonding at least one absorbent material to a topsheet material to create a composite; and

extrusion laminating a backsheet to said composite to form the absorbent composition.

2. The process of claim 1 wherein:

the absorbent material contains fibers,

the backsheet is comprised of a first thermoplastic material; and

a portion of the fibers of the absorbent material are comprised, at least in part, of a second thermoplastic material, the second thermoplastic material being compatible with the first thermoplastic material.

3. The process of claim 1 wherein:

the absorbent core is comprised of fluff and polymeric bonding fibers;

the backsheet is comprised of a polymeric film; and

the polymeric film is compatible with said polymeric bonding fibers.

4. The process of claim 1 comprising the further step of applying pressure to the extrusion laminate.

5. The process of claim 4 wherein said pressure is applied using nip rollers.

6. The process of claim 4 wherein said pressure is applied using a vacuum drum.

7. The process of claim 1 wherein the absorbent material comprises air laid nonwoven polyolefin fibers.

8. The process of claim 1 wherein the absorbent material comprises bicomponent fibers.

9. The process of claim 8 wherein the bicomponent fibers include polyethylene and polypropylene.

10. The process of claim 8 wherein the bicomponent fibers are concentric.

11. An absorbent composition comprising:

a topsheet material;

at least one absorbent core material bonded to said topsheet material to form a composite; and

a backsheet material extrusion laminated to said composite opposite said topsheet material.

12. The absorbent composition of claim 11 wherein:

the absorbent material contains fibers;

the backsheet is comprised of a first thermoplastic material; and

a portion of the fibers of the absorbent material are comprised, at least in part, of a second thermoplastic material, the second thermoplastic material being compatible with the first thermoplastic material.

13. The composition of claim 11 wherein:

the absorbent core is comprised of fluff and polymeric bonding fibers;

the backsheet is comprised of a polymeric film; and

the polymeric film is compatible with said polymeric bonding fibers.

14. The composition of claim 11 wherein the absorbent material comprises air laid nonwoven polyolefin fibers.

15. The composition of claim 11 wherein the absorbent material comprises bicomponent fibers.

16. The composition of claim 15 wherein the bicomponent fibers include polyethylene and polypropylene.

17. The composition of claim 15 wherein the bicomponent fibers are concentric.

18. An absorbent article comprising:

a topsheet material;

at least one absorbent core material bonded to said topsheet material to form a composite; and

a backsheet material extrusion laminated to said composite opposite said topsheet material.

19. The absorbent article of claim 18 wherein:

the absorbent material contains fibers,

the backsheet is comprised of a first thermoplastic material; and

a portion of the fibers of the absorbent material are comprised, at least in part, of a second thermoplastic material, the-second thermoplastic material being compatible with the first thermoplastic material.

20. The absorbent article of claim 18 wherein:

the absorbent core is comprised of fluff and polymeric bonding fibers;

the backsheet is comprised of a polymeric film; and

the polymeric film is compatible with said polymeric bonding fibers.

21. The absorbent article of claim 18 wherein the absorbent material comprises air laid nonwoven polyolefin fibers.

22. The absorbent article of claim 18 wherein the absorbent material comprises bicomponent fibers.

23. The absorbent article of claim 22 wherein the bicomponent fibers include polyethylene and polypropylene.

24. The absorbent article of claim 22 wherein the bicomponent fibers are concentric.