The color fastness of the webbing is an important evaluation index for printing and dyeing textiles. Different types of dyes used in textiles have different evaluation indicators for color fastness. Due to the different types of dyes used, the difference in the color fastness evaluation index can reach one and a half. The washing fastness of web dyed cotton is 4-5 for vat dyes, while the vulcanization, naftu, and reactive dyes are 3. This is because the molecular structure and chemical properties of various webbing dyes are different, and the binding methods and binding forces for different textiles are also different. On the fabric, and some dyes are fixed on the fabric by physical reaction.

Ribbons are classified according to the process, mainly woven belts and knitted belts. Webbing, especially jacquard webbing, is somewhat similar to the fabric labeling process, but the warp yarn of the fabric label is fixed, and the pattern is expressed by the weft yarn; while the basic weft yarn of the webbing is fixed, and the pattern is expressed by the warp yarn, using a small machine. Threading and adjusting the machine can take a long time and is relatively inefficient. But you can create a wide variety of dazzling products, not always the same faces as cloth labels.
Therefore, the evaluation indicators of its color fastness are not the same. Therefore, it is very important to determine the type of dyes on printed and dyed textiles to assess their color fastness.