Method for preparing cellulose fiber

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United States of America Patent

PATENT NO 11124899
APP PUB NO 20190292683A1
SERIAL NO

16317049

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Abstract

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The present disclosure discloses a method for preparing cellulose fiber. The method includes the following steps: 1) mixing cellulose pulp with NMMO aqueous solution of a mass concentration of 60%-85%, preferably 70% to 76%, to obtain a uniform mixture; 2) subjecting the obtained uniform mixture to dewatering for swelling, dissolution, and deaerating to obtain a cellulose spinning stock solution; 3) the cellulose spinning stock solution entering into a spinning machine after being filtered and heat exchange, and entering into a coagulation system after carrying out extruding by a spinneret-pack and cooling by air, and then coagulating in a NMMO coagulating bath of a mass concentration of 50% to 72% to obtain nascent fiber; and 4) subjecting the nascent fiber to rinsing to obtain a fiber filament bundle, and then, performing subsequent-section treatment to obtain cellulose fiber.

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Patent Owner(s)

Patent OwnerAddress
CHINA TEXTILE ACADEMY100025 NO 3 JING JING LI STREET BEIJING CHAOYANG DISTRICT BEIJING CITY BEIJING CITY 100025

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cai, Jian Beijing, CN 42 172
Cheng, Chunzu Beijing, CN 3 8
Ding, Libing Beijing, CN 1 7
Li, Ting Beijing, CN 218 986
Luo, Qiang Beijing, CN 122 1471
Sun, Yushan Beijing, CN 3 7
Xu, Jigang Beijing, CN 5 15
Zhang, Dong Beijing, CN 236 2031
Zhou, Yunan Beijing, CN 1 7

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