A method for producing cellulose fiber

Details A method for producing cellulose fiber A method for producing cellulose fiber

D - Textiles, Paper

01

F

D01F 2/02 (2006.01) D01D 5/06 (2006.01)

Patent

CA 2496655

There is provided with a cellulose fiber suitable for industrial material which is produced by a process comprising following steps: producing NMMO solution made in a manner to dissolve 0.1 wt% to 10 wt% of salt and polyvinyl alcohol in concentrated N-Methyl Morpholine N-oxide (NMMO) in liquid state; producing cellulose solution in a manner that said NMMO solution is mixed with cellulose powder and then said cellulose powder is swelled to produce cellulose solution; obtaining multifilament by solidifying said cellulose solution reached at a coagulation bath through air layer after extruded-sprayed with spraying nozzle having orifices of 500 to 2000; and winding said multifilament for storing after in turn washing, drying and treating with organic solvent, and the cellulose fiber according to the present invention is suitable for industrial materials due to excellent mechanical strength. In addition, it is possible to obtain cellulose fiber by adding salts to concentrated NMMO in liquid state, in which micro-fibril is well oriented in direction of the fiber-axis making cellulose multifilament have excellent mechanical strength and excellent stability of morphology with lower shrinkage at high temperature. Furthermore, the cellulose fiber according to the present invention has a good fibrillation- resistance and excellent adhesion to rubber by using polyvinyl alcohol when used for tire- cord.

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