How to ensure the color fastness of textiles

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Textile Color Fastness Dyed Functional Fabrics

Color fastness includes blooming fastness, ironing fastness, soaping fastness, perspiration fastness, rubbing fastness, Sunlight fastness, etc. The key to these fastnesses lies in the structural properties of the dye, and is also closely related to external conditions, fibers, dye concentration, dyeing and finishing processes, etc. Therefore, the key to whether the color fastness reaches the standard is the selected dye, followed by Dyeing process and application of dyeing auxiliaries.

When producing a dyeing process certificate, it must be reasonably determined based on fiber, dye and customer indicators, so that the dye can be used as much as possible under certain conditions with the help of auxiliaries. Firmly dye the fibers so that they are fully set. For auxiliaries, one is to use good leveling agents and dye accelerators to make the dye slowly, evenly and fully dye the fibers; the other is to add chelating agents to overcome the floating color caused by the complexation of the dye with metal ions in the water, and Reduce the hydrolysis of reactive and other dyes in water; the third is to choose an excellent soaping agent to remove floating colors and prevent floating colors from re-staining the fabric; the fourth is to choose an appropriate fixing agent, which currently has a negative impact on sublimation fastness and sun fastness. In addition to the lack of ideal color-fixing agents, there are excellent color-fixing agents available for various indicators such as soaping fastness, perspiration fastness, and rubbing fastness.

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