Heat-setting method
View Patent ↗The invention provides a method of treating fabrics containing polyetherester fibers so that the fabrics retain their basis weight, power, and stretch without edge curl. Fabrics containing polyetherester fibers are heat-set after dyeing, preferably in a temperature range of 160-180° C. (dry) or 115-140° C. (steam).
1. A method of treating fabric comprising the sequential steps of:
(a) preparing a fabric comprising polyetherester fiber wherein said polyetherester fiber is prepared from poly(tetramethylene-co-2-methyltetramethyleneether)glycol; 1,4-butanediol, and dimethyl terephthalate;
(b) dyeing said polyetherester fabric; and
(c) heat-setting said dyed polyetherester fabric;
wherein said fabric is dry heat-set at 171-180° C. for 10-60 seconds.
2. The method of claim 1 further comprising a step of preheat-setting said fabric comprising polyetherester fiber at less than 150° C. after step (a) and before step (b).
3. A fabric comprising polyetherester fiber prepared according to claim 1 .
4. A fabric comprising polyetherester fiber prepared according to claim 2 .
5. The method of claim 1 wherein said fabric comprises 2-60 wt % polyetherester fiber.