Process for dyeing poly (trimethylene terephthalate) carpet continuously

摘要

In the process for continuously dyeing a poly(trimethylene terephthalate) bulked continuous filament yarn carpet an aqueous dyeing solution is applied to a continuously moving poly(trlmethylene terephthalate) bulked continuous filament yarn carpet at a temperature of 45° C. to 100° C., and then the poly(trimethylene terephthalate) bulked continuous filament yam carpet is steamed, rinsed and dried. Before applying the aqueous dyeing solution the carpet is heat-set at 120 to 150° C. The carpet is steamed with saturated steam at 102 to 150° C. for 5 to 10 mm. The aqueous dyeing solution does not include an anti-frosting agent. The process also advantageously includes heating the carpet with a dry heat of 140 to 300° C. for 30 to 60 sec after steaming the carpet and before rinsing it.