POLYOLEFIN ELASTIC FIBER
An article comprising a yarn comprising an elastomeric propylene-based polymer composition; said polymer composition comprising at least one elastomeric propylene-based polymer, wherein said yarn has break elongation of greater than 200%.
1 - 8 . (canceled)
9 . A method for preparing an elastomeric propylene-based polymer yarn comprising:
(a) providing an elastomeric propylene-based polymer composition;
(b) heating said elastomeric propylene-based polymer composition to a temperature of about 220° C. to about 300° C.;
(c) extruding said composition through a capillary to form a yarn; and
(d) winding said yarn onto a package.
10 . The method of claim 9 , wherein said winding speed is greater than about 400 m/min.
11 . The method of claim 9 , wherein said winding speed is greater than about 425 m/min.
12 . The method of claim 9 , wherein said winding speed is greater than about 500 m/min.
13 . The method of claim 9 , further comprising:
(e) crosslinking said yarn.
14 . The method of claim 13 , wherein the crosslinking is effected either before winding said yarn onto a package or after winding said yarn onto a package.