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  • How to test vat dyes

    2021-10-08

    1 Visual inspection Visually check whether the dye is dustproof. The outer packaging of vat dyes is generally an iron drum, and there is a tie-in plastic bag inside the drum. If the dye is treated with anti-dust, then the plastic paper outside the tie of the inner bag is relatively clean. If the pla Read More

  • Why does the dyeing of cotton/rayon blends have different colors?

    2021-08-27

    Pure cotton fiber has the advantages of good moisture absorption, alkali resistance and strong heat resistance, but the fabric finish, uniformity, feel and drape are not as good as rayon;Rayon fiber has good dyeability, high brightness and color fastness, comfortable to wear, moisture absorption sim Read More

  • What are the factors that affect the wet rubbing fastness for reactive dye?

    2021-05-14

    The dyeing mechanism of reactive dyes on cellulose fibers is different from other dyes. As a result of dyeing, the dyes on the fibers are not physically dyed on the fibers by hydrogen bonds, ionic bonds or van der Waals forces, but in the form of covalent bonds. It is chemically combined with the fi Read More

  • What is the specific shift value for reactive dyes

    2021-04-30

    For dyeing with reactive dyes, the choice of the three primary colors of dyes must be paid attention to by dyeing workers. Among them, the ratio shift value (Rf) of the dye is a very important parameter. The Rf value represents the affinity of the dye. During dyeing, it determines the instantaneous Read More

  • US media: It’s hard to not use Xinjiang cotton

    2021-04-23

    As the Swiss Better Cotton Development Association (BCI) quietly withdrew its statement about "banning Xinjiang cotton", the storm seems to have ended with "the boycotters slumped out of the field"; but in fact, behind this controversy is not just industry organizations. , The sudden behavior of a f Read More

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