How to improve the color fastness of the fabric?

Author：admin   Date：2017-12-09

How to improve the fabric color fastness, color fastness of fabric refers to the color fastness of textiles, is referred to as the color fastness, dyeing or printing fabric in use or processing experience, subjected to external factors, the decoloration rate of extrusion, friction, washing, rain and insolation, light, seawater immersion, water stains, perspiration, saliva impregnation under the action of fabric is an important index.
The color fastness is good, the textile is not easy to fade in post processing or application experience, and its color fastness is poor, so it will cause many problems such as fading, discoloring or staining. The measures to improve the color fastness of light, choose the dye rationally, and the choice of the dye is the core in the promotion of the sun fastness.
All dyes will leave floating dyes in the fibers after printing and dyeing. The more the amount of dyes, the more the floating dyes will be. The adsorption of each dye has a limit value, that is, the dyeing and finishing value, the amount of general dyes can not exceed 10% of the full value of the dye. When the amount of dyestuffs is much more than the saturation value, the excess dye can not be dyed and fasten and can only accumulate on the surface of the fabric to affect the rubbing color fastness of the fabric.
Dye, easy to fall off from the fiber, soaping fastness is poor, dyeing washing net, floating color residual, will also cause the soaping fastness of decline, temperature, pH value and soap lotion stirring condition on soaping fastness effect, dyes concentration on soaping fastness smaller the general effect, but high concentration of dyes, dye combination with super fiber with full force, the dye off easily, which also affected the soaping fastness.
The color fastness of anthocyanin and phthalocyanine is better than those of three primary colors with high fastness to sunlight. The dyestuffs with relatively less content in the mixed color component can choose the dye with high fastness in the sun, thus ensuring the sun grade of the whole color fastness of the fabric.
Adequate washing soap, washing, try to reduce the amount of hydrolyzed dyes with floating color to improve the light fastness of textiles, fixing agent selection, there are three main types of the fixing agent, cation and non injection-molding-machine.tayu.cn surface active quaternary ammonium salt type and reaction type. Among the cationic fixing agent with the dye in the fiber formation of lake, although the washing fastness is very good, but tends to reduce the original dye fastness, light colored fabrics should be used as little as possible or not.
Factors affecting soaping fastness, many factors affect the dyeing fastness of products, but the chemical structure, dye in dye depends on the fiber physical state, combined with the status and degree of disperse dyes with fiber, dye concentration, dyeing method and technical conditions have great influence on color fastness. The properties of the fibers have a great relationship with the color fastness, and the same dye often has different fastness on different fibers.