Process for enhancing the uniformity of dye uptake of false twis

Details Process for enhancing the uniformity of dye uptake of false twis Process for enhancing the uniformity of dye uptake of false twis

1978-10-23

1981-10-20

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

With incorporating dye susceptible material or dyeing workpiece

57288, 57290, 264103, 264235, 2642356, D01F 104

Patent

active

042960584

ABSTRACT:
The present invention provides an improvement in a process for providing a dyed, false twist texturized, fibrous material comprising at least 85 mole percent polyethylene terephthalate which is subject to variations in dye uptake induced by the false twist texturizing treatment conducted on said fibrous material prior to or concurrently with a dyeing process by enhancing the uniformity of dye uptake of the fibrous material. The enhancement in the uniformity of dye uptake is achieved by subjecting the fibrous material, which has been previously oriented but prior to false twist texturizing, to an annealing step at a specifically defined temperature for a specifically defined length of time while controlling the length of the fibrous material in a specifically defined manner.

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patent: 3797221 (1974-03-01), Ikeda et al.
patent: 3927167 (1975-12-01), Reese
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patent: 4003974 (1977-01-01), Chantry et al.
patent: 4070432 (1978-01-01), Tamaddon
patent: 4145870 (1979-03-01), Klee et al.
patent: 4164838 (1979-08-01), Bach et al.

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