Color fastness of dyed fabrics

Dyeing fastness is an important indicator of dyed fabrics.

The ability of printed and dyed textiles to withstand external influences and maintain their original color, also known as color fastness. After dyeing and printing, textile fabrics sometimes undergo other processes, such as shrinking of wool fabrics and heat setting of synthetic fiber textiles; During consumption, it is necessary to come into contact with the atmosphere, sweat stains, and withstand external effects such as washing, friction, and ironing. These can cause varying degrees of fading and discoloration of printed and dyed textiles. The main processes that affect the dyeing fastness of printed and dyed textile fabrics are shrinkage, carbonization, chlorine bleaching, sublimation, etc. The dyeing fastness of dyes or pigments on textile fabrics is related to their chemical structure, concentration and state on the fibers, and the properties of the fibers. The testing methods for various dyeing fastness are formulated by simulating various consumption or process conditions.