Method of producing composite staple fibers consisting of resin

Details Method of producing composite staple fibers consisting of resin Method of producing composite staple fibers consisting of resin

1989-02-17

1992-12-15

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

Utilizing centrifugal force or rotating forming zone

264 12, 264 14, 264142, B29B 900

Patent

active

051714892

ABSTRACT:
A method for producing composite staple fibers whereby resin matrix and fine and short inorganic reinforcing fibers (e.g., vapor growth carbon fibers and/or potassium titanate whiskers) are processed. A resin material and fine and short inorganic reinforcing fibers having a fiber diameter of 1 .mu.m or less are blended, heated, and mixed to prepare a molten polymer containing dispersed reinforcing fibers. The molten polymer is spouted out of small apertures in a high speed rotator to form filaments. Hot gas is blown onto the spouted filaments to form composite staple fibers. Instead of using the spouting step and the hot gas blowing step, one can spin the molten polymer from spinning apertures into filaments, and simultaneously blow hot gas onto the filaments at a high flow velocity from gas discharging holes arranged near the spinning apertures to draw and cut the filaments into the staple fibers.

REFERENCES:
patent: 3419517 (1968-12-01), Hendrick et al.
patent: 3461197 (1969-08-01), Lemelson
patent: 3819345 (1974-06-01), Battigelli
patent: 4442254 (1984-04-01), Aratani
Van A. Wente, "Superfine Thermoplastic Fibers", (1956).

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