Elasticized non-woven fabric and method of making the same

• US 4,734,311 A
• Filed: 09/04/1985
• Issued: 03/29/1988
• Est. Priority Date: 01/16/1985
• Status: Expired due to Fees

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Corporation
• Inventors: Sokolowski, Robert C.
• Primary Examiner(s): Bell, James J.
• Application Number:
  US06/772,598
• Time in Patent Office: 937 Days
• Field of Search: 428/229, 428/230, 428/288, 428/198, 428/360, 428/370, 428/152, 428/910, 428/903, 156/85, 156/161, 156/244.23
• US Class Current: 428/152
• CPC Class Codes: D04H 1/4291 Olefin series
• CPC Class Codes: D04H 1/4358 Polyurethanes
• CPC Class Codes: D04H 1/43835 Mixed fibres, e.g. at least two chemically different fibres or fibre blends
• CPC Class Codes: Y10S 428/903 Microfiber, less than 100 micron diameter
• CPC Class Codes: Y10S 428/91 Product with molecular orientation
• CPC Class Codes: Y10T 428/24446 Wrinkled, creased, crinkled or creped
• CPC Class Codes: Y10T 442/601 Nonwoven fabric has an elastic quality
• CPC Class Codes: Y10T 442/68 Melt-blown nonwoven fabric
• CPC Class Codes: Y10T 442/692 Containing at least two chemically different strand or fiber materials

Abstract

An elasticized non-woven fiber material is made by combining one or more textile fibers with one or more elasticizeable fibers and bonding the combined fibers together. The resultant web of bonded non-woven fibers is then heat-treated to heat-shrink the elasticizeable fiber and recover its elasticity thereby shrinking the fibers and the web of material. An elasticized non-woven fabric made by the described method is also provided.

Claims

1. A fibrous elastomeric non-woven web comprising:

a plurality of textile fibers having a modulus of elasticity of about 18 to 85 grams per denier which are gathered and pleated; and

a plurality of heat shrunk elasticized fibers consisting essentially of an elasticized material with at least some of the elasticized fibers being bonded to at least some of the textile fibers.

2. The web according to claim 1, which further includes a plurality of melt blown fibers.

5. The web according to claim 1, comprising from about 5 percent to about 35 percent, by weight, of the elasticizable fibers and from about 65 percent to about 95 percent, by weight, of the textile fibers.

6. The web according to claim 1, wherein said elasticizable fibers are selected from the group consisting of styrene-butadiene copolymers, styrene-butadiene-styrene copolymers and polyurethanes.

7. The web according to claim 1, wherein said textile fibers are selected from the group consisting of polyester fibers, polyamide fibers, glass fibers, polyolefin fibers, cellulosic derived fibers, acrylic polymer and copolymer fibers, natural fibers and blends of two or more types of said textile fibers.

8. The web according to claim 7, wherein said polyamide fibers are selected from the group consisting of nylon fibers and acrylic polymer and copolymer fibers.

9. The web according to claim 7, wherein said polyolefin fibers are selected from the group consisting of polyethylene fibers and polypropylene fibers.

10. The web according to claim 7, wherein said cellulosic derived fibers are rayon fibers.

11. The web according to claim 7, wherein said natural fibers are selected from the group consisting of cotton fibers, wool fibers, pulp fibers, paper fibers and blends of two or more of said natural fibers.

3. A fibrous non-woven web comprising:

a plurality of textile fibers having a modulus of elasticity of about 18 to 85 grams per denier; and

a plurality of uniaxially oriented heat shrinkable elasticizable fibers consisting essentially of an elasticizable material with at least some of the elasticizable fibers being bonded to at least some of the textile fibers; and

wherein said elasticizable heat shrinkable fibers are adapted to shrink to effect gathering and pleating of said textile fibers upon application of heat to the web.

4. The web according to claim 3, which further includes a plurality of melt blown fibers.

12. The web according to claim 3, comprising from about 5 percent to about 35 percent, by weight, of the elasticizable fibers and from about 65 percent to about 95 percent, by weight, of the textile fibers.

13. The web according to claim 3, wherein said elasticizable fibers are selected from the group consisting of styrene-butadiene copolymers, styrene-butadiene-styrene copolymers and polyurethanes.

14. The web according to claim 3, wherein said textile fibers are selected from the group consisting of polyester fibers, polyamide fibers, glass fibers, polyolefin fibers, cellulosic derived fibers, acrylic polymer and copolymer fibers, natural fibers and blends of two or more types of said textile fibers.

15. The web according to claim 14, wherein said polyamide fibers are selected from the group consisting of nylon fibers.

16. The web according to claim 14, wherein said polyolefin fibers are selected from the group consisting of polyethylene fibers and polypropylene fibers.

17. The web according to claim 14, wherein said cellulosic derived fibers are rayon fibers.

18. The web according to claim 14, wherein said natural fibers are selected from the group consisting of cotton fibers, wool fibers, pulp fibers, paper fibers and blends of two or more of said natural fibers.