Bicomponent fibers and webs made therefrom

Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including interlaminar mechanical fastener

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428373, 428280, 264171, D03D 300, D02G 300

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active

045474206

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.

REFERENCES:
patent: 3016599 (1962-01-01), Perry, Jr.
patent: 3333585 (1967-08-01), Barghini et al.
patent: 3571679 (1971-03-01), van Turnhout et al.
patent: 3971373 (1976-07-01), Braun
patent: 4118534 (1978-10-01), Stanley
patent: 4195112 (1980-03-01), Sheard et al.
patent: 4215682 (1980-08-01), Kubik et al.
Wente, Van A., "Superfine Thermoplastic Fibers" in Industrial Engineering Chemistry, vol. 48, p. 1342 et seq. (1956).
Report No. 4364 Naval Research Laboratories, May 25, 1954 entitled "Manufacture of Superfine Organic Fibers" by Wente, V. A.; Boone, C. D.; & Fluharty, E. L.

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