Dyeing of no-refining after polyester alkali peeling
In view of the problems of color flowers and color spots that are easy to appear in the dyeing of no-re-fining after polyester alkali peeling.The composition of the impurities on the cloth surface after the polyester alkali peeling was studied,and the properties of the additives for cleaning,dispersing and anti-staining of the impurities were matched with the uniformity of the cloth dyeing.The results show that the main impurities on the cloth surface consist of NaOH,matting powder TiO2,polyester alkali peeling oligomer PTA and PA sizing.TF-256B can replace acetic acid and has a dis-persing effect on the impurities and dyes.The selection of TF-256B+TF-253+TF-257 additives during dyeing can strength-en the cleaning,dispersion,anti-staining effect of the impurities on the cloth,and the uniformity of the cloth dyeing is high.
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