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Types and differences in color fastness
  • 2019-10-15 09:14:28

Color fastness:

Color fastness also known as dyeing fastness, dyeing fastness.It refers to the resistance of textile color to various functions in the process of processing and use.

The degree of fastness is evaluated according to the discoloration of the sample and the coloration of the undyed fabric.Textile color fastness test is a routine test item in the inherent quality test of textiles.

Textiles in the process of its use will be light, washing, ironing, sweat stains, friction and chemical agents and other external effects, some dyeing textiles also through special finishing processing, such as resin finishing, flame retardant finishing, sand washing, grinding, which requires the color of dyeing textiles relatively maintain a certain fastness.

The Color fastness:

Color fastness referred to as color fastness;The color of colored fibers, fabrics, or other pigmented materials that are resistant to the sun, washing, rubbing, perspiration, and other corrosive effects during processing and use.

The color abundance was rated as 5 except R for fastness to light (sun).The higher the series, the better the color fastness.There are two methods for determination of leather: discoloration (change in the color of the leather itself) and contamination of the contact material by stained l.

Fade-out test is the color difference between the leather sample and the untreated test sample uu after the sample is treated according to the specified conditions.The color staining test is to determine the degree of color transfer and dyeing of the white cloth by touching the sample and the standard white cloth according to the specified conditions. The grade is measured by the gray color staining card.

Fastness to staining:

The transfer of dyes from one area to another, usually from the dark part to the light part, occurs in the storage of garments composed of different color parts. This phenomenon is different from sublimation, because it takes place below the sublimation temperature, and this phenomenon also occurs in non-sublimation dyes.Mainly reflected in polyester and other chemical fiber fabric migration, other raw materials are also available.

Color transfer is mainly due to two reasons: one is the dye transfer, especially the disperse, reactive dye floating color and the fiber migration free dye, may be another sample surface of the fiber dyeing;In particular, dark to light color, so as to granular, imprinted retention on the surface of another sample.The other is that the fibers shed under the action of friction and transferred from one sample to another.

Color fastness tester is a professional testing instrument to evaluate the color fastness, you can provide a variety of color fastness tester, welcome to contact us!



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