Why does polyester dyeing have color stains? 2021-03-04
Improper control of dyeing heating speed Some dyes have poor dispersibility and improper dyeing temperature control. Too fast will cause dye spots; dispersant or penetrating agent is not resistant to high temperature and cause secondary separation of dyes to form dye spots; some additives need to be added separately (high solid content) when adding additives (high solid content), not operating as required Suspended dots are combined with dyes to form dye dots; some color dots are very small and present a dot-like distribution and can only be found by careful observation, and are different from the color light of dyeing cloth. That's because the dye itself contains insoluble substances, and the dispersion of these dyes is destroyed during the manufacturing process and cannot enter the fiber. This situation mostly occurs in light-colored or brilliant-colored systems; the diffusion effect of red dyes may not be good, and a diffusing agent needs to be added to solve it.
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