How to effectively improve the dyeing rate of overflow dyeing machine
May 27, 2022
1 Strengthen the impurity and decontamination treatment of the contaminated objects
The pretreatment is sufficient, the fabric has good wettability, and the capillary effect is large. Therefore, the above-mentioned purpose can be achieved by strengthening the impurity and decontamination treatment of the contaminated object.
2 Mercerizing of cotton fabrics
The mercerized cotton fabric has significantly improved dye adsorption capacity, and can achieve a medium-dark effect and improved surface gloss than the unmercerized cotton fabric.
3 Alkali reduction treatment of polyester fabrics
Polyester macromolecules have high crystallinity, compact fiber structure, high refractive index and surface reflectivity, smooth fiber surface, and specular reflection of light. White light comes into view, so deep blacks are harder to get. After alkali reduction treatment, the original smooth surface of polyester is turned into a rough surface, forming a concave and convex irregular reflection layer, which is what we often call the "etching" effect, resulting in a certain dark color effect, and after reduction treatment After the freedom of movement of the fabric increased, the adsorption force of dyes increased.