Draw-texturing polyester yarns

Details Draw-texturing polyester yarns Draw-texturing polyester yarns

1974-12-09

1976-08-31

Watkins, Donald E.

Textiles: spinning, twisting, and twining

Apparatus and processes

Elements

D02G 102

Patent

active

039771750

ABSTRACT:
Textured polyester yarn is prepared from multifilament yarn composed of a synthetic linear ethylene terephthalate polyester by draw-texturing at a draw ratio of 1.05 - 1.30X, using a heat-setting temperature of about 170.degree. - 240.degree.. Feed yarn for said draw-texturing process has (a) a break elongation of 40 - 80%, (b) a density of above 1.371 g/cm.sup.3, and (c) a boil-off shrinkage of less than 8%. Said feed yarn is prepared by modified melt spinning of the foregoing polyester at a speed of about 3000 - 5000 meters per minute.

REFERENCES:
patent: 2980492 (1961-04-01), Jamieson et al.
patent: 3708970 (1973-01-01), McFarlane
patent: 3733801 (1973-05-01), Jones
patent: 3796036 (1974-03-01), Parker
patent: 3816994 (1974-06-01), Small
patent: 3874159 (1975-04-01), MacFarlane
patent: 3877213 (1975-04-01), McFarlane
patent: 3910027 (1975-10-01), Bach et al.

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