Process for the continuous production of viscose rayon yarns having high degree of whiteness
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United States of America Patent
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Sep 13, 1983
Grant Date -
N/A
app pub date -
Jun 17, 1981
filing date -
Jun 17, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Process for the continuous production of viscose rayon yarns having a highegree 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.
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