printing The mechanism of dyeing fiber with dyes is the same as that in dyeing process, which includes three stages of adsorption, diffusion and fixation that are both different from each other and related to each other and restrict each other. Only the dye of a certain color in the printing is applied according to the requirements of the Chinese pattern spin product After a certain amount of post-treatment, the fabric is dyed with dyes, and then printed products with one or more colors are obtained on textiles. So printing can also be said to be local dyeing.

Black dyeing When using the same type of dyes as printing, the strength and chemical properties of the chemical auxiliaries used are similar or the same, so their dye dyeing principles are also similar or the same. For the same type of fiber products, if you use a unified dye for dyeing and printing, you can have the desired color fastness, for example, when the vat dyes are still color, the fastness is good, Its fastness is also good on printed products.