活性染料在棉织物上防印工艺新探

New investigation of resist printing process for reactive dyes on cotton fabric

以往在棉织物上采用活性染料防印工艺大多用亚硫酸钠作为防印剂,其在工厂应用较多也较成熟,但还原能力相对较弱,部分含乙烯砜基的活性染料不能被完全防白;而采用雕白块作为防印剂,具有强还原性,合适的用量则可达到预期的效果。

Sodium sulfite was the most used resist printing agent in the resist printing process with reactive dyes on cotton fabric in the past. It was widely used and more mature in factory application. However, due to its weak reduction ability, part of the reactive dyes containing vinyl sulfone group cannot be completely white resist. Rongalite as resist printing agent provides strong reducibility and achieves excepted effects with appropriate dosage.