Process for producing a fibrous bundle via a spinning nozzle

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United States of America Patent

PATENT NO 9834864
APP PUB NO 20150376815A1
SERIAL NO

14768828

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Abstract

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A spinning nozzle which has a perforated part in which ejection holes have been arranged in a density as high as 600-1,200 holes/mm2. This process for producing a fibrous bundle comprises ejecting a spinning dope having a viscosity as measured at 50° C. of 30-200 P from the ejection holes of the spinning nozzle to produce a fibrous bundle. This fibrous bundle has a single-fiber fineness of 0.005-0.01 dtex. By the wet-process direct spinning, a mass of nanofibers which are stably uniform and continuous can be produced at a high efficiency.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI CHEMICAL CORPORATIONCHIYODA-KU TOKYO 100-8251

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kotera, Yoshinobu Chiyoda-ku, JP 4 13
Nakanishi, Shima Otake, JP 7 6
Onohara, Yukio Otake, JP 10 11

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