What Are The Six Main Textile Fastnesses? 2021-03-04
Light fastness refers to the degree of discoloration of colored fabrics by sunlight. The test method can be sun exposure or daylight machine exposure. The fading degree of the sample after exposure is compared with the standard color sample. It is divided into 8 levels, 8 is the best, and 1 is the worst. Fabrics with poor light fastness should not be exposed to the sun for a long time, and should be dried in the shade in a ventilated place.
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