PRETREATMENT INFLUENCES REPRODUCIBILITY
Many dyeing plants don't pay attention to pre-treatment. Actually, many problems in dyeing processing because of ingnoring do enough pre-treatment. Impurity removal degree, whiteness, pH value after washing, purification of hydrogen peroxide after bleaching, a...
Cotton cone yarn dyeing, process mainly consists of the following five steps:
PRETREATMENT
This step primarily removes natural impurities (cottonseed hulls, waxy substances, etc.) and pigmentum from the yarn, enhancing its whiteness and capillary effect to create conditions for dyeing process...