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

1983-02-01

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

81375, D01F 206

Patent

active

043714919

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.

REFERENCES:
patent: 2307863 (1943-01-01), Soukup
patent: 2309072 (1943-01-01), Burkholder
patent: 2416533 (1947-02-01), Naumann
patent: 2974363 (1961-03-01), Meyer
patent: 3741862 (1973-06-01), Kubota et al.

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