Process for the continuous production of viscose rayon yarns hav

Details Process for the continuous production of viscose rayon yarns hav Process for the continuous production of viscose rayon yarns hav

1981-06-17

1983-09-13

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264196, 264233, D01F 1102

Patent

active

044041578

ABSTRACT:
Process for the continuous production of viscose rayon yarns having a high egree of whiteness, comprising extruding a viscose solution into a coagulating bath, drawing and coagulating the extruded filaments, advancing said filaments in a substantially helical path while they undergo all the treatments required for the production of the finished yarn, which process is characterized by, after the exit of the filaments from the spinning bath, completion of the coagulation to a coagulation index not higher than 1 and a treatment with water having a non-alkaline pH.

REFERENCES:
patent: 2620258 (1952-12-01), McLellan
patent: 2770962 (1956-11-01), McLellan
patent: 2867108 (1959-01-01), Severini
patent: 3077374 (1963-02-01), Bates
patent: 3341645 (1967-09-01), Horuchi et al.
patent: 3529052 (1970-09-01), Carney et al.

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