False-twist texturing process

Details False-twist texturing process False-twist texturing process

1975-03-13

1977-06-14

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Elements

57 34HS, D01H 792, D02G 102

Patent

active

040288757

ABSTRACT:
Thermoplastic multifilament feed yarns, such as polyester feed yarns are heatset in a twisted state at a temperature and under a tension so as to produce a torque yarn; and thereafter continuously, and at substantially the same tension, cooled, detwisted, and subjected to a second heat treatment so as to reduce the torque. If undrawn or partially drawn feed yarn is employed, the yarn may be orientation drawn during the texturing process.

REFERENCES:
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patent: 3165881 (1965-01-01), Moncuit et al.
patent: 3289400 (1966-12-01), Scragg
patent: 3472011 (1969-10-01), Scragg
patent: 3541775 (1970-11-01), Fisher
patent: 3638411 (1972-02-01), Tsugawa et al.
patent: 3733801 (1973-05-01), Jones
patent: 3785136 (1974-01-01), Tecce et al.
patent: 3796036 (1974-03-01), Parker
patent: 3910027 (1975-10-01), Bach et al.

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