Printing & Dyeing Tips │Resolving floating color phenomenon after dyeing ã€Dyeing Practice】
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Reactive dyes, disperse dyes, and vat dyes are the most commonly used dyes for printing and dyeing companies. In general, light and medium colors have less floating color after dyeing, and dark colors have more floating color after dyeing, of which reactive dyes are the most serious. This is mainly when dyeing dark colors, the amount of dyes is large, and a large amount of dyes accumulate on the surface of the fibers, resulting in some dyes having no dyed seats on the fibers and floating on the surface of the fibers.
To solve this problem, we must first choose a dye based on fabric and color. If the polyester/cotton fabric is dyed, it is necessary to adjust the dispersion/reduction, dispersion/activity ratio of the dye reasonably when playing the sample; secondly, it is necessary to strictly operate the process to ensure dye uptake rate; finally, the most important is to Floating color enhanced soaping ensures that the color fastness is up to standard. When soaping, choose a neutral detergent with good quality. Ensure that the temperature of the soap box is above 95°C and wash thoroughly. In the case of dispersion/reduction or dispersion/reactive dyeing processes, it is advisable to reduce and wash the disperse dyes first, and then to dye and reduce them again. This will significantly reduce the occurrence of floating color.
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