A brief introduction to dyeing fastness

Dye refers to a class of organic compounds that can enable other substances to obtain a bright and firm color. Since the pigments used today are all artificially synthesized, they are also called synthetic dyes. Dyeing fastness refers to the ability of dyed fabrics to maintain their original color state under the influence of various external factors during use or subsequent processing. Dyeing fastness is one of the important quality indicators to measure the dyeing products. The dyeing fastness is low, if the dyeing products are easy to fade , and the dyeing fastness  is high, if if the dyeing products are not easy to fade. Color fastness depends to a large extent on its chemical structure. In addition, the physical state of the dye on the fiber, the degree of dispersion, the combination of the dye and the fiber, the dyeing method and process conditions also have a great influence. Color fastness is multi-faceted. For consumers, the main ones include sun exposure, soaping, perspiration, friction, brushing, ironing, smoke and other fastness. In addition, textiles have different uses or different processing processes, and their fastness requirements are also different. In order to check the quality of the products, the textile sector and the commercial sector have formulated a set of test methods and standards for color fastness with reference to the use of textiles.