Color fastness test steps for sports socks
Color fastness test steps for sports socks
Color fastness test is an important part of evaluating the quality of sports socks. It involves multiple aspects such as color fastness to washing and color fastness to rubbing. The following are the detailed steps for color fastness test of sports socks:
1. Sample preparation
Color fastness to soap washing test: Take a 100mm×40mm sample, contact the front with a 100mm×40mm multi-fiber lining cloth, and sew along one short side to form a composite sample
Color fastness to rubbing test: Clamp the sample together with a piece of standard white cloth on the friction head, and simulate the friction during actual wearing through the reciprocating motion of the friction head
2. Test solution preparation
For color fastness to soap washing tests A and B, prepare a solution of 5 grams of standard soap per liter of distilled water. For tests C, D and E, prepare a solution containing 5 grams of standard soap and 2 grams of anhydrous sodium carbonate per liter of distilled water
3. Conduct the test
Soap-washing color fastness test: Place the composite sample and the specified number of steel balls in a container, pour the preheated test solution to the required volume at the test temperature ±2°C, and the bath ratio is 50:1. Close the container, adjust the temperature and time according to the standard, and start the machine
Rubbing color fastness test: Under a certain pressure, rub the dyed fabric according to the specified rubbing method, number of rubbings and rubbing range to complete the test operation
4. Rinse and dry
Soap-washing color fastness test: After washing, remove the composite sample from the container, rinse it twice with distilled water, and then rinse it with running cold water until it is clean. Squeeze out excess water, unfold the composite sample, leaving only the seam connecting the sample, and lay it flat between two unused filter papers to remove excess moisture. Then hang it in air at no more than 60°C to dry
5. Test result evaluation
Evaluate the color change of each sample and the dyeing of the lining fabric using an instrument or grayscale card. The degree of fading or staining should be tested under the specified light source and rated according to the standard gray card, and the results are graded from 1 to 5, with 5 being the best and 1 being the worst.
6. Error Analysis
Differences in multi-fiber lining fabrics may cause testing errors. The same sample and method may produce different results when staining tests are performed using different multi-fiber lining fabrics.
Through the above steps, the color fastness of sports socks can be fully evaluated to ensure their quality and safety in actual use. These tests are essential for manufacturers, as they help improve product quality, meet consumer needs, and comply with relevant industry standards.