Color fastness to rubbing is an item of textile color fastness inspection, and it is also one of the most common inspection items in the textile trade process. It refers to the degree of discoloration of dyed fabrics after friction, and it is an assessment of the resistance of dyes to mechanical friction. Ability is divided into dry friction and wet friction. The principle is to fix a textile sample of a specified size on a friction tester platform with a clamping device, and then rub it with a dry friction cloth and a wet friction cloth. Finally, the degree of staining of the white cloth is used as the evaluation basis, and the standard gray sample card is divided into 5 grades. The larger the grade, the better the rubbing fastness. The fabric with poor rubbing fastness will seriously affect its use.
The color fastness problem may seem simple, but the factors involved are quite complicated. Over the years, whether in the field of dye research and production, or in the field of textile dyeing and finishing, people have invested a lot of manpower and material resources to solve the problem of color fastness of textile products and have made great progress. Dyestuffs, new processes and new additives continue to emerge, but there are still many problems that need to be resolved.