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Why the fastness for disperse dyes is poor?

Views: 4     Author: Site Editor     Publish Time: 2023-04-28      Origin: Site


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Disperse dyeing is mainly because polyester fiber is dyed high -temperature and high pressure. Although the dye molecules are small, the dyes molecules are all entered inside the fiber during dyeing. It is to use the dye molecules that do not enter the fiber to destroy and improve the role of improvement and improve color light.


Polyester fabrics are dyed, especially in the middle and dark staining. In order to fully remove the low -polymers on the surface of the fabric, the dyeing fastness is improved. Blend fabrics generally refer to the yarn from two or more ingredients, so this fabric has the advantages of these two ingredients. And you can adjust the component ratio to obtain more characteristics of one of the ingredients.


The blending generally refers to the short fiber blend, that is, the two fibers of different ingredients are mixed together in the form of short fiber. For example: polyester cotton blending fabrics are usually called T/C, CVC.T/R, etc. It is made of polyester short fiber and cotton fiber or artificial fiber blended gauze. It has its advantages: with the appearance and feel of the whole cotton cloth, weakening the chemical fiber luster and chemical fiber feel of polyester cloth, and improving the level.


Increased coloring fastness. Because polyester cloth is high -temperature color, the color fastness is higher than the all -cotton color fastness. Therefore, the coloring of polyester cotton mixing fabrics is also improved compared to the all -cotton color fastness. However, in order to improve the coloring of polyester cotton cloth, it is necessary to do restoration and cleaning (the so -called R/C), and the post -treatment after the high temperature dyeing. Only after the restore is made can we achieve the ideal prison.


The short fiber blending allows the characteristics of each composition to be evenly played. Similarly, other ingredients blended can also play their own advantages to meet some functional or comfortable or economical requirements. In the blend of cotton or cotton fibers, the dyeing temperature cannot be higher than the temperature of the full cloth. Under the stimulus of strong alkali or insurance powder, the fiber strong or tearing force for polyester cotton or polyester -cotton artificial fiber cloth will be severely reduced, and it is difficult to achieve the quality of the product in the subsequent links.

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