How to dye silk

After the white silk is refined, it enters the dyeing stage. Dyeing is the process of chemically reacting dyes with silkworms and silk, so that the silk can be dyed with various colors. Since silk is a protein fiber, it is not alkali-resistant, so dyeing should be carried out in an acidic or close to neutral dyeing solution. The main dyes used in silk fabrics are: acid dyes, reactive dyes, direct dyes and vat dyes. The color dyed with acid dyes is brighter. After dyeing, it is treated with cationic fixing agent to improve the washing fastness of the product. Reactive dyes have good washing fastness on silk. The dyeing method of the fabric varies with the type of fabric. For example, crepe and gauze fabrics are dyed with rope or overflow jet dyeing, and spinning, silk, and satin fabrics are dyed with open width hanging or roll dyeing.