Method and apparatus for alleviating tight spots in false twist

Details Method and apparatus for alleviating tight spots in false twist Method and apparatus for alleviating tight spots in false twist

1979-06-04

1980-11-04

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Twist setting

57288, 57334, D02G 120, D02G 104

Patent

active

042312191

ABSTRACT:
A method for alleviating tight spots in false twist textured yarn includes the steps of feeding a thermoplastic multi-filament yarn to a false twister, imparting a false twist to the yarn in one direction, setting the twist to provide a latent torque in the yarn, and thereafter passing the yarn around a tapered flange of a freely rotatable roller to impart a twist in the yarn of a direction opposite to that of the false twist imparted by the twister and of a magnitude sufficient to alleviate tight spots occurring in the yarn during passage through said false twister.

REFERENCES:
patent: Re28117 (1974-08-01), Rice
patent: 3404525 (1968-10-01), Tompkins
patent: 3457338 (1969-07-01), Lefevre
patent: 3686845 (1972-08-01), Okada et al.
patent: 3735575 (1973-05-01), Hattori
patent: 3777469 (1973-12-01), Spurgeon
patent: 3782088 (1974-01-01), Bakewell

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