Fibers and non-wovens prepared with propylene-based elastomers

Details Fibers and non-wovens prepared with propylene-based elastomers Fibers and non-wovens prepared with propylene-based elastomers

2011-01-04

2011-01-04

Salvatore, Lynda (Department: 1786)

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Nonwoven fabric

Nonwoven fabric has an elastic quality

C442S361000, C442S400000, C442S401000

Reexamination Certificate

active

07863206

ABSTRACT:
Nonwoven fabrics and methods for making the same are described, wherein the fabrics comprise two or more propylene-based elastomers in combination with one or more propylene-based thermoplastic polymers. Specifically, the first propylene-based elastomer comprises at least 7% by weight ethylene or non-propylene alpha-olefin units, the second propylene-based elastomer comprises less than 7% by weight ethylene or non-propylene alpha-olefin units, the first and second propylene-based elastomers each have a heat of fusion less than 80 J/g, and the propylene-based thermoplastic polymer has a heat of fusion greater than 80 J/g.

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patent: 2005/0107529 (2005-05-01), Datta et al.
patent: 2009/0124153 (2009-05-01), Dharmarajan et al.
patent: 0 400 238 (1990-05-01), None
U.S. Appl. No. 11/938,030 filed Nov. 9, 2007 entitled “Fibers and Non-Wovens Prepared with Propylene-Based Elastomers”, Inventors: Narayanaswami Raja Dharmarajan et al.
U.S. Appl. No. 11/698,359, filed Jan. 26, 2007 entitled “Fibers and Non-Wovens Prepared with Propylene-Based Elastomers”.
U.S. Appl. No. 11/655,399, filed Jan. 19, 2007 entitled “Spunbond Fibers and Fabrics From Polyolefin Blends”.
U.S. Appl. No. 11/698,630, filed Jan. 26, 2007 entitled “Elastomeric Non-Wovens”.

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