Process for the continuous spinning of viscose rayon

Details Process for the continuous spinning of viscose rayon Process for the continuous spinning of viscose rayon

1981-01-09

1982-11-30

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264196, D01F 312

Patent

active

043615325

ABSTRACT:
A process is provided herein for continuously spinning viscose yarns by euding viscose into a coagulating bath to form filaments and partially coagulating these filaments to a coagulation index of between 15 and 18, while concurrently stretching said filaments to the desired stretch ratio and then subjecting the filaments to a 2-stage coagulation treatment in which (1) the filaments are advanced without further chemical treatment onto e.g. a first advancing roller where partial spontaneous coagulation occurs such that the coagulation index is between 5 and 8 and (2) a second stage coagulation which comprises contacting the filaments with an acid bath at a temperature between 50.degree. and 100.degree. C. until complete coagulation occurs such that the coagulation index is between 0 and 1.
The aforementioned process permits the spinning operation to occur at a much greater speed than was hitherto possible without increasing dimensions of the treatment zones or apparatus.

REFERENCES:
patent: 2440057 (1948-04-01), Mallhiseu
patent: 2510135 (1950-06-01), Pedlow et al.
patent: 2511699 (1950-06-01), Dvisch et al.
patent: 2536094 (1951-01-01), McDermott et al.
patent: 2974363 (1961-03-01), Megern
patent: 2979767 (1961-04-01), Fry
patent: 3452129 (1969-06-01), Isobe et al.

Affiliated with

Also associated with

Rating

Process for the continuous spinning of viscose rayon does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the continuous spinning of viscose rayon, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the continuous spinning of viscose rayon will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-195386