Process of making mutlicomponent fibers

Plastic and nonmetallic article shaping or treating: processes – Treatment of material by vibrating – jarring – or agitating... – By reciprocating or vibrating mold

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26417217, 26417218, 264211, D01F 102, D01F 804

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056329440

ABSTRACT:
A process for producing multicomponent fibers provides a dispersion of a particulate additive or chemical compound in a nonaqueous liquid carrier; forms a blend of a first thermoplastic polymer and the dispersion by injecting the dispersion into an extruder which is part of a fiber extrusion apparatus and which extruder is extruding the first thermoplastic polymer thereby forming a blend of the additive in the first thermoplastic polymer; provides a second thermoplastic polymer to the fiber extrusion apparatus; in the fiber extrusion apparatus, arranges the blend and the second thermoplastic polymer in a preselected, mutually separated relative arrangement; directs the arrangement of blend and the second thermoplastic polymer to a spinneret which is a part of the fiber extrusion apparatus while maintaining the preselected, mutually separated relative arrangement; extrudes the directed arrangement of the blend and the second molten polymer through the spinneret to form multicomponent fibers; and solidifies the multicomponent fibers.

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patent: 4185137 (1980-01-01), Kinkel
patent: 4285748 (1981-08-01), Booker et al.
patent: 5019445 (1991-05-01), Sternlieb
patent: 5162074 (1992-11-01), Hills
patent: 5236645 (1993-08-01), Jones
patent: 5308395 (1994-05-01), Burditt et al.
patent: 5318845 (1994-06-01), Tanaka et al.
patent: 5364582 (1994-11-01), Lilly

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