What are The Categories and Requirements of Color Fastness of 100% Cotton Flame Retardant Workwear

The color fastness of 100% cotton flame retardant workwear is the quality requirement of dyeing and printing fabric, due to light, perspiration, friction, washing, ironing, etc, the fabric has been dyed color are worn and kept will be fade or change color, then influence the aesthetic feeling of fabric or clothing. The nature or extent of the dyeing state variation, can use color fastness to express. The color fastness of fabric is related to the fiber species, yarn structure, fabric weave, printing and dyeing method, dyestuff types and external influence. The color fastness can divided into light fastness, washing and soaping fastness, rubbing fastness, perspiration fastness and ironing fastness, etc.

1.Light fastness

Light fastness is the discoloration degree of colored fabric after the daylight effect. The test method can be used in the sun or machine, the take the sample after basked compare with standard sample, it can be divided into eight grades, level 8 is　the best, level 1 is the worst.

2.Washing fastness

Washing and soaping fastness is the discoloration degree of colored fabric after washing, normally by gray sample card use as evaluation criteria, compare the original sample and after test sample. It can be divided into five grades, level 5 is the best, level 1 is the worst

3.Rubbing fastness

Rubbing fastness is the fade degree of colored fabric after friction, it can be divided into dry friction and wet friction. The evaluation principle of rubbing fastness is the degree of colored of white fabric, it can be divided into five grades, level 5 is the best, level 1 is the worst

4.Perspiration fastness

Perspiration fastness is the fade degree of colored fabric after sweat soaked. Perspiration fastness due to the composition of artificial is different, so apart from the individual testing, it also combines with other color fastness to check. Perspiration fastness can be divided into 1-5 grades, the larger number the better.

5.Ironing fastness

Ironing fastness is the fade degree of colored fabric when ironing. The fade degree is based on the color of other fabric. It can be divided into five grades, level 5 is the best, level 1 is the worst

Normally the color fastness of 100% cotton flame retardant workwear is required reach the level of 3-4 to meet the need of wear, but Xinxiang Yulong Textile produce flame retardant protective clothing can reach the lever of 4-5,and it is non-toxic and tasteless, more suitable for people to wear.