Process and apparatus for producing easily dyeable polyester fal

Details Process and apparatus for producing easily dyeable polyester fal Process and apparatus for producing easily dyeable polyester fal

1983-02-18

1985-09-10

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Twist setting

57287, 57288, D02G 102, D02G 302

Patent

active

045398054

ABSTRACT:
A false-twisted polyester yarn of good dyeing and mechanical properties is produced by a process wherein a yarn consisting of an as-spun polyester fiber having a mean birefrigence index (.DELTA.n) of from 15.times.10.sup.-3 to 150.times.10.sup.-3 is heat-treated and continuously, subjected to a false twisting treatment or draw-false twisting treatment. A preferred apparatus used comprises a feed yarn creel, a false twisting heater and an optional stabilizing heater, a false twisting element and a winder, wherein a heat-treating heater of the non-contact type is arranged upstream of the false twisting heater and between the false twisting heater and the feed yarn creel, at a height substantially equal to the height of the feed yarn creel so that the heat-treating heater confronts the false twisting heater; and a yarn cooling zone is provided between the heat-treating heater and the false twisting heater.

REFERENCES:
patent: 3695026 (1972-10-01), Taylor
patent: 3797221 (1974-03-01), Ikeda et al.
patent: 3910027 (1975-10-01), Bach et al.
patent: 3956878 (1976-05-01), Schaffer et al.
patent: 4019311 (1977-04-01), Schippers
patent: 4051650 (1977-10-01), Gleyze et al.
patent: 4081948 (1978-04-01), Parker

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