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  • What are the dye fastness?


    The staining fastness refers to the ability to maintain the original color state under the influence of various external factors during the use of or during the processing process of dye fabrics.The staining fastness is one of the important quality indicators to measure the finished product. The dye Read More

  • What is the problem of heat migration fastness of disperse dyes?


    Heat migration fastness of disperse dyes:Migrating after dyeing means that after polyester is dyed with disperse dyes, when treated at high temperature (such as heat setting), disperse dyes can produce a kind of thermal migration due to the influence of additives. Thermal migration is a redistributi Read More

  • How to control various fastness?


    After dyeing of textiles, the ability of fabrics to retain their original color can be expressed by testing various dye fastnesses. Commonly used indicators for detecting dyeing fastness include washing fastness, rubbing fastness, light fastness, sublimation fastness and so on.The better the washing Read More

  • What are the operating points and precautions for dyeing?


    ⑴Choose the correct concentration of dye, and make sure to shake the dye evenly before absorbing the dye.⑵Choose a suitable pipette, suck the material accurately, and keep the eyes facing the concave surface of the liquid surface in the tube. After sucking the material, wipe the outer wall of the tu Read More

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


    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




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