6. Color fastness to hot pressing
For the rating of color fastness to hot pressing, immediately after the test, the color change of the sample should be rated using the color change gray card, and then the sample should be placed in a standard atmosphere for 4 hours to adjust the humidity, and then the color change of the sample and the staining of the cotton adjacent fabric should be evaluated. When evaluating the staining, the side of the cotton adjacent fabric with heavier staining should be evaluated.
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