黏胶纤维织物低尿素印花技术探讨

Low Urea Printing Technology for Viscose Fiber Fabric

从黏胶纤维前处理工艺、活性染料开发、生产过程控制和印花糊料选择4个方面研究黏胶纤维织物的低尿素印花技术。结果表明:黏胶纤维采用低温轧碱前处理新工艺,可使黏胶纤维印花织物的相对色深明显增加,特别是经活性艳蓝和活性翠蓝印花的黏胶纤维织物,其相对色深增加了20%以上;开发低尿素依存性活性染料,可降低50%以上的尿素使用量,部分染料品种可不使用尿素;通过控制织物进入蒸化工序前的含湿率在20%~30%,可有效提高印花织物的相对色深;使用合成复配糊料能够起到尿素的部分作用,可使印花织物的相对色深提高10%以上。

The low urea printing technology for viscose fiber fabric was studied from four aspects,such as pretreatment process of viscose fiber,development of reactive dyes,production process control and selection of printing paste.The results show that the relative color depth of printed viscose fiber fabric can increase obviously when the viscose fiber is pretreated by rolling alkali process at low temperature.In particular,the relative color depth of the viscose fabric printed by reactive brilliant blue and reactive turquoise blue can increase more than 20%.The development of low urea-dependent reactive dyes can reduce the use of urea by more than 50%.Some reactive dyes can be used to print viscose fiber even without urea.The relative color depth of the printed fabric can be effectively increased by controlling the moisture content of the fabric between 20%~30%before entering the steaming process.The use of synthetic compound paste can play a part of the role of urea so that the relative color depth of printed fabrics can increase more than 10%.