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Several test methods for washing color fastness?


Time: 2019-11-11 10:28

Bright and bright clothing is made by making solid fabrics into bright fabrics through the printing and dyeing process and then passing through tailors. However, if the performance of the dyes used is not stable enough, the problem of discoloration will occur when washing clothes. Use feelings. Therefore, in clothing manufacturing companies, the raw materials are tested for color fastness to washing.

First, washable

Test method: Put the test sample in the washing fastness tester, you can set the water temperature and washing time by yourself, and start the tester until the program ends. The test sample is taken out, placed in an oven and dried, and then compared with a color card in a standard light source box to evaluate the degree of fading of the clothing dye.

Test purpose: To evaluate the color fastness of clothes in warm and cold water.

Second, soaping resistance

Test method: Put the test sample in a washing fastness tester, add detergent (washing powder, laundry detergent, soap powder, etc.) to the water, set the water temperature and washing time, start the tester until the program ends . The test sample is taken out, placed in an oven and dried, and then compared with a color card in a standard light source box to evaluate the degree of fading of the clothing dye.

Test purpose: To evaluate the fastness to soaping of clothing dyes.

Third, chlorine bleaching resistance

Some clothing encounters a serious fading problem with 84 disinfectant containing sodium hypochlorite. The chlorine fastness test needs to be performed to determine the color fastness of the clothing dye to sodium hypochlorite solution.

Test method: Place the test sample in a washing fastness tester, add sodium hypochlorite solution (84 disinfectant) to the water, set the water temperature and washing time, and start the tester until the program ends. The test sample is taken out, placed in an oven and dried, and then compared with a color card in a standard light source box to evaluate the degree of fading of the clothing dye.

Test purpose: To evaluate the color fastness of clothing dyes to sodium hypochlorite solution

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