Txoj cai ntawm vat dyes
Vat dyes yog insoluble hauv dej. Thaum dyeing, lawv yuav tsum tau txo thiab yaj rau hauv leuco sodium ntsev nyob rau hauv ib qho alkaline muaj zog txo cov tshuaj kom dye cov fibers. Tom qab oxidation, lawv yuav rov qab los rau hauv cov pas dej tsis sib haum thiab tsau rau ntawm cov fibers. Feem ntau, lawv yog washable. , Lub teeb ceev ceev.