Wet spun fibers, wet formed film, and production method therefor

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12139819
APP PUB NO 20220154369A1
SERIAL NO

17279947

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Abstract

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The method for producing wet spun fibers/a wet formed film using a double-walled pipe type micronozzle apparatus according to the present invention is a production method, wherein, in a step of extruding an internal phase comprising a fiber/film material and a good solvent for the fiber/film material in a linear form from the circular/rectangular end of the internal pipe of the apparatus into an external phase comprising a poor solvent for the fiber/film material, the external phase flowing in the external pipe of the apparatus, the ratio of the external phase flow rate to the internal phase flow rate is set to 1 or more, and further for the wet spun fibers, the external phase line speed at the orifice portion at which the internal phase and the external phase merge is set to 0.1 ms−1 or more.

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Patent Owner(s)

  • NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ono, Tsutomu Okayama, JP 21 422
Watanabe, Takaichi Okayama, JP 1 1

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