Bicomponent fibers and webs made therefrom

Details Bicomponent fibers and webs made therefrom Bicomponent fibers and webs made therefrom

D - Textiles, Paper

01

F

18/636.2

D01F 8/00 (2006.01) B01D 39/08 (2006.01) D04H 1/54 (2006.01) D04H 1/56 (2006.01)

Patent

CA 1240110

BICOMPONENT FIBERS AND WEBS MADE THEREFROM Abstract Bicomponent fibers, and webs made therefrom, are taught in which one component of the fibers is a crystallizable material. When a web of the fibers is heated in a mold above the temperature at which crystallization occurs, the fibers tend to be set in the position they are held in the mold. A preferred fiber comprises blown fibers comprising as one component amorphous, crystallizable polyethylene terephthalate, and as the other component polypropylene. A web of such fibers not only becomes formed into a shape-retaining form by crystallization during the molding process, but also can be further established in its shape-retaining character by heating the web above the softening point of the polypropylene, whereupon the fibers become bonded at their points of intersection.

463285

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