Acrylonitrile-based fiber bundle manufacturing method

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12241180
APP PUB NO 20220186405A1
SERIAL NO

17442237

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Provided herein is a method for producing an acrylonitrile based fiber bundle by dry-jet wet spinning technique that serves to allow a high-grade, high-quality acrylonitrile based fiber bundle to be produced stably even if the traveling speed of the coagulated fibers is increased or the number of spinneret discharge holes is maximized in an attempt to enhance the production efficiency. The production method for an acrylonitrile based fiber bundle is characterized by first extruding a spinning dope solution through a plurality of discharge holes in a spinneret, then allowing the spinning dope solution to run downward into a coagulation bath liquid stored in a coagulation bath to form coagulated fibers, turning the coagulated fibers upward on a direction changing guide part located in the coagulation bath liquid below the spinneret, and pulling them out of the coagulation bath liquid, wherein certain requirements are met.

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Patent Owner(s)

  • TORAY INDUSTRIES INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aizu, Koichi Ehime, JP 2 0
Funakoshi, Joji Otsu, JP 14 27
Kawamoto, Takashi Ehime, JP 46 502
Oshima, Fumito Ehime, JP 2 0
Tamura, Tomoki Otsu, JP 3 0

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