How To Test Some Main Color Fastness

- Jan 08, 2020-

1. Washing color fastness:

 

The sample is stitched together with the standard lining fabric, washed, washed and dried, and washed under the appropriate temperature, alkalinity, bleaching and friction conditions, so that the test results can be obtained in a short time. The friction between them was accomplished by the small bath ratio and the rolling and impact of the appropriate number of stainless steel beads. The gray card was used to rank the test results.

 

Different test methods have different temperature, alkalinity, bleaching and friction conditions, and sample size. The specifics should be selected according to test standards and customer requirements.



2. Color fastness to dry cleaning:

 

Same color fastness as washing, except that washing is changed to dry cleaning.

 

3. Rubbing color fastness:

 

Put the sample on the rubbing fastness meter and rub it with a standard rubbing white cloth for a certain number of times under a certain pressure. Each group of samples needs to be tested for dry rubbing fastness and wet rubbing fastness. A gray card was used to rate the color stained on the standard rubbing white cloth, and the resulting grade was the measured rubbing color fastness. The rubbing color fastness needs to be tested in both dry and wet rubbing. All colors on the specimen must be rubbed.

 

4. Perspiration fastness:

 

The sample is stitched together with the standard lining fabric, placed in a sweat solution, clamped on a sweat fastness tester, placed in an oven at a constant temperature, and then dried, and graded with a gray card to obtain a test result. Different test methods have different sweat stain ratios, different sample sizes, and different test temperatures and times.