There are some very special finishing methods, which will have a greater impact on the color of the cloth, and they are summarized as follows:
1. Finishing after fluffing/grinding
Raising/grinding finishing is to use mechanical action to form long or short uniform and fine piles on the cloth surface, making the fabric appear loose, soft and thick. After finishing by raising/grinding, the surface color of the cloth will be lighter due to the loose fibers on the surface.
2. Finishing after rolling
Finishing after rolling is to use mechanical friction and pressure to make the cloth surface smooth and flat, with a bright finish. Since the diffuse reflection of the cloth on the finished line is reduced after rolling, the apparent color becomes lighter accordingly, and the greater the degree of rolling, the lighter the apparent color.
3. After no ironing
The non-iron finishing is carried out under strong acid conditions (pH<1.5). The acid resistance of some reactive dyes is poor, and the color changes after finishing, especially for blue and black, so the overall color of the cloth is reddish. . When toning, the discoloration sample should be arranged after referring to the single-color sample, and the dye with large color change should be avoided when the amount is finished, and the discoloration and color matching rules of the selected dye should be paid attention to.
4. After PU coating
PU coating finishing is to change the style and function of the fabric by evenly coating a layer of PU coating film on the surface of the fabric. Due to the large refractive index of the PU coating film, the color of the cloth surface will be darker and darker after the PU coating, and the thicker the PU coating, the greater the color effect.
5. Finishing after durable rolling
The effect of finishing after durable rolling on the color finish of the cloth includes the effects of silk finish, ETI and rolling finish on the finish. When toning, adjustments need to be made according to these finishing steps.
6. Anti-ultraviolet finishing
The anti-ultraviolet finishing currently used is to add the anti-ultraviolet agent in the coloring stage, which has a certain influence on the color. Therefore, when proofing, for the order requiring anti-ultraviolet finishing, the corresponding anti-ultraviolet agent should also be added when the sample is colored.