Process for the continuous spinning of viscose rayon
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United States of America Patent
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-
Feb 1, 1983
Grant Date -
N/A
app pub date -
Jan 9, 1981
filing date -
Jan 9, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process is described for the continuous spinning of viscose rayon. Said ocess is characterized by the fact that after the coagulation and drawing of the yarn, a two-stage setting is carried out, the first stage being at higher temperature and acidity than the second stage. The two-stage setting permits one to obtain a yarn which is not only perfectly set but is also substantially desulphurated and the classic desulphuration operation is thus eliminated. The setting is followed by at least one washing and by the other conventional treatments, with the exception of the desulphuration. The viscose rayon continuous spinning process is carried out while the yarn travels in a substantially helical path.
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