活性印染逐格逆流全沸洗工艺

Washing process in reactive dyeing and printing with counter-current flow boiling water

活性染料的水洗主要分为两个阶段,一是去除纤维表面浮色、盐和碱的脏洗阶段,第二是去除纤维内部浮色,以提供较好色牢度。分析了影响水洗效果的主要因素,包括染料的性质、电解质浓度、水洗温度、洗液pH值、织物带液量、水质和皂洗剂等。在传统水洗的基础上提出了全新的全沸洗工艺。实践证明,活性染料平幅全沸洗工艺可节水40%～50%,节约蒸汽20%～30%。

Washing process during reactive dyeing and printing are divided into two stages,the first is to remove loose color,salt and alkali on fiber surface,and the second is to remove loose color within the fiber so as to provide good color fastness.The major factors affecting the effect of washing were analyzed,including dye property,electrolyte concentration,washing temperature,pH value,take-up,water quality and soaping agent.Based on the traditional washing process,a new open-width boiling washing process was proposed.The practice showed that open-width boiling washing process could save water and energy up to 40%~50% and 20%~30% separately.