Method for manufacture of hollow fiber

D - Textiles – Paper – 01 – D

Patent

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Details

18/15, 18/596

D01D 5/247 (2006.01) D01D 5/24 (2006.01) D01F 2/04 (2006.01)

Patent

CA 1203655

ABSTRACT OF THE DISCLOSURE A method for the manufacture of a hollow fiber which comprises extruding a cellulosic spinning dope through an annular spinning nozzle directly into a non-congulative liquid directly into a upper layer with a coagulative liquid relative said spinning dope in the lower layer with a non-coagulative liquid of a halogenated hydrocarbon and, at the same time, introducing a non-coagulative liquid relative to said spinning dope into the inner center of the tubularly extruded thread of spinning dope, and subsequently passing the resultant tubular fiber of spinning dope through said coagulative liquid thereby coagulating and regenerating the fiber.

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