False-twist texturing process with hollow friction twist tubes

Details False-twist texturing process with hollow friction twist tubes False-twist texturing process with hollow friction twist tubes

1974-05-10

1976-02-17

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Elements

57 34HS, 57 774, D02G 102

Patent

active

039383148

ABSTRACT:
False-twist texturing processes which apply twist with hollow friction tubes, fitted at each end with a toroidal bushing, are improved by using a high friction bushing at the yarn inlet and a lower friction bushing at the yarn outlet. Further improvements are provided by adjustments in the yarn inlet and outlet angles, and the speeds of the bushing surfaces.

REFERENCES:
patent: 3066473 (1962-12-01), Maeda
patent: 3537250 (1970-11-01), Mackintosh
patent: 3643412 (1972-02-01), Maeda et al.
patent: 3724191 (1973-04-01), Hooper et al.
patent: 3724196 (1973-04-01), Holland et al.
patent: 3826075 (1974-07-01), Maruyama et al.

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