Method for the production of rayon

Details Method for the production of rayon Method for the production of rayon

1976-04-06

1979-06-26

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264181, 264197, D01D 514

Patent

active

041592999

ABSTRACT:
A method and apparatus for the production of rayon and for the continuous processing of filaments is disclosed. Filament threads are formed in a spinning column in which they are completely regenerated and stretched by the action of a constant temperature coagulating solution. The total length of the spinning column considerably exceeds the length of the column portion in which the rayon yarns are formed. The coagulating solution, after the formation of the rayon yarns, flows at a speed less than that of the threads at the column outlet eliminating an entire zone to the treatment of spun threads with strong high-temperature solution, heretofore necessary for complete regeneration of the threads.

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patent: 2898629 (1959-08-01), DeGee
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patent: 3131429 (1964-05-01), Okamura
patent: 3240852 (1966-03-01), Denyes et al.
patent: 3452129 (1969-06-01), Isobe et al.
patent: 3689620 (1972-09-01), Miyazaki et al.

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