How to improve wet fastness

At present, the wet rubbing fastness of ordinary denim is generally around 1-2, and the improvement of washing and wet rubbing fastness of denim is mainly achieved by the following methods:

The first step: strengthen cleaning. After the product is dyed, strengthen water washing, and wash away all the floating colors as much as possible.

The second step: soaping and fixing. Use soaping agent to wash away the floating color again, and use fixing agent to enhance the adhesion of vulcanization and indigo dye.

The third step: fastness improvement. Use a special fastness enhancer to further improve the adhesion between the dye and the fiber.

Through the above three steps, the wet friction of denim fabric can be increased from 1-2 to 2-3, or even above 3.