The conventional anti-staining method is to dye the fabric with the anti-staining paste attached thereto. The new dye-inhibiting method treats the surface of the fiber with polymethylol melamine or denatured melamine resin, so that the fabric has a dye-resistant pattern that is substantially free of the paste.
Processing methods include:
(1) Printed on the fabric containing more than 5% of polymethylol melamine printing paste, under atmospheric pressure, 70 ~ 100 °C steamed more than 5min, washed, dried. Adding dyes such as reactive dyes to this printing paste can give a colored, dye-resistant pattern.
(2) The fabric was rolled into a pattern and processed for impregnation with a treatment bath containing polymethylolmelamine, a pH of 8.7 or less, and a temperature of 30 to 105C. After that, it was washed with water and dried to give a dyed pattern with a dye-inhibiting effect, and the durability was good.
(3) The yarn is preliminarily or partially treated in a treatment bath containing polymethylolmelamine, a pH of 8.7 or less, and 30 to 105°C, and the yarn is used at least in part to perform the dyeing treatment. Woven or knitted, the fibers attached by polymethylol melamine show a pattern.