Vat dye is a dye which is excellent in various properties in the dye. According to its main chemical structure, it can be divided into two major categories: mites and mites. Its chromatogram is more complete, bright color, soaping and light fastness are relatively high, but because of the higher price, some yellow, orange and other colors have photosensitive fragility, which limits its application.
Dyeing process for vat dyeing, dyeing or padding can be used for vat dyeing. Generally, yarns and knitted fabrics are mostly dyed, and most of the woven fabrics are dyed and padded, and generally include the following four basic processes.