Dyeing vs printing
The dyes used for printing and dyeing are roughly the same, but there are some dyes that are specifically used for printing, such as reactive dyes for printing (domestic P-type reactive dyes, etc.), stable insoluble azo dyes, temporary soluble dyes, etc.; there are white flowers or The white ground requirements are very white, which requires that the semi-finished products after pre-treatment are similar to bleaching fabrics. Generally, you need to eat bleaching water after printing, and dyed fabrics can be unbleached before dyeing. It is for lattices, horizontal stripes, squares or figures, etc., and has strict requirements on semi-product weft and slant; the door width of the cloth should also have certain requirements, so as to avoid flower slant and pattern on the cloth when printing after drawing The deformation of the dyed cloth is not as strict as the printed cloth.
For printed semi-finished products, the gross effect should be uniform and have a good "instantaneous gross effect", mainly because the printing time is short, and the printed pattern needs to be uniform in color, clear in outline, smooth in line, and not broken. Therefore, every step of the pre-processing of printed cloth is very important. Only by obtaining a good quality of semi-finished products can the quality of printing be guaranteed. Therefore, the pre-processing requirements of printed semi-finished products are higher than those of dyed semi-finished products; Good dyeing, especially some disordered patterns, can effectively hide some fabric defects.