Process for continuous heat-setting and shrinking of synthetic f

Details Process for continuous heat-setting and shrinking of synthetic f Process for continuous heat-setting and shrinking of synthetic f

1973-04-11

1976-06-29

Feldman, Peter

Bleaching and dyeing; fluid treatment and chemical modification

Fluid treatment

Combined liquid and gas or vapor

81493, 68DIG5, 28 7214, D06B 304, D06B 302, D06B 2100

Patent

active

039655113

ABSTRACT:
A process for the continuous heat-setting and shrinking of synthetic fibers in the form of yarns with a given twist and/or in the form of tows with a forced crimp by means of a heated fluid medium with temperatures between 100.degree. and 220.degree.C, characterized in that the fibers are treated in a two-step continuous process, first at temperatures below 100.degree.C in water or saturated steam temperatures, or slightly superheated steam, respectively, and subsequently with air, superheated steam or a superheated steam-air mixture at high temperature conditions between 150.degree. and 220.degree. C.

REFERENCES:
patent: 3041863 (1962-07-01), Goto
patent: 3242702 (1966-03-01), Fleissner
patent: 3326022 (1967-06-01), Drago
patent: 3730679 (1973-05-01), Schuierer
patent: 3750428 (1973-08-01), Bruckner

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