Process for wet spinning of cellulose fibers from an alkaline spin bath

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United States of America

PATENT NO 12188157
APP PUB NO 20220112628A1
SERIAL NO

17428687

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Abstract

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A process for forming a fiber tow, involves a wet spinning procedure comprising the steps of: dissolving cellulose pulp N in an alkaline aqueous solvent to form a cellulose spin dope composition, spinning the cellulose spin dope composition in a coagulation having a p H of more than 7.0, preferably a pH of at least 10, to produce a fiber tow, and passing the produced fiber tow through a sequence of consecutive stretching and washing steps in which the formed fiber tow is washed with a washing liquid by a counter-current flow washing procedure.

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Patent Owner(s)

Patent OwnerAddress
TREETOTEXTILE AB237 34 BJÄRRED

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Engström, Jonas Nödinge, SE 2 2
Hagström, Bengt Gothenburg, SE 8 8
Köhnke, Tobias Svanesund, SE 7 2

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