Highly elastic synthetic crimp yarn with low residual latent cri

Details Highly elastic synthetic crimp yarn with low residual latent cri Highly elastic synthetic crimp yarn with low residual latent cri

1974-10-15

1976-12-07

Watkins, Donald E.

Textiles: spinning, twisting, and twining

Apparatus and processes

Elements

57157TS, D02G 326, D02G 102, D02G 332

Patent

active

039954200

ABSTRACT:
The invention relates to a process for the production of a false-twist textured, highly elastic, synthetic crimp yarn with low residual shrinkage and latently bound crimp by stretching, false-twisting, heat-fixing and thermal after-treatment of the synthetic yarn at yarn draw-off rates of from 400 to 900 m/min, in which the thread tension during thermal after-treatment is 6-25% of the thread tension during heat-fixing, the time of thermal after-treatment is 2-5% of the time spent in heat-fixing and the temperature of the yarn during the thermal after-treatment is 30.degree.-100.degree. C.

REFERENCES:
patent: 3041813 (1962-07-01), Enneking
patent: 3041814 (1962-07-01), Held
patent: 3310857 (1967-03-01), Loftin et al.
patent: 3318083 (1967-05-01), Gilchrist
patent: 3472011 (1969-10-01), Scragg

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