1. Color fastness to rubbing: The rubbing fastness refers to the degree of discoloration of a dyed fabric after it has been rubbed, and it can be all dry rubbing and wet rubbing. Frictional fastness is based on the degree of white cloth staining as a principle of evaluation. It is divided into 5 levels. The larger the value, the better the frictional fastness. 2. Light fastness: Light fastness refers to the degree of discoloration of a colored fabric by sunlight. The test method is to simulate the degree of fading of the sample after the sunlight exposure and the standard color sample, and it is divided into 8 grades. The grade 8 is the best grade and the grade 1 is the worst. Fabrics with poor light fastness should not be exposed to sunlight for a long time and should be dried in a ventilated place. 3. Sublimation fastness: refers to the degree of sublimation phenomenon that occurs during the storage of dyed fabrics. The color fastness of normal fabrics is generally required to reach level 3-4 to meet the needs of wearing. 4. Washing fastness: Washing or soaping fastness refers to the degree of color change after the dyed fabric is washed with the washing solution. Gray graded sample cards are usually used as the evaluation criteria, that is, the color difference between the original sample and the sample after fading is used for evaluation. Washing fastness is divided into 5 levels, 5 is the best and 1 is the worst. The fabrics with poor washing fastness should be dry-cleaned. If the wet-cleaning is performed, the washing conditions must be doubled. For example, the washing temperature should not be too high and the time should not be too long. 5. Perspiration fastness: The perspiration fastness is the degree of discoloration of dyed fabric after a small amount of perspiration. 6. Ironing fastness: refers to the degree of discoloration or discoloration of a dyed fabric when it is ironed. Shaoxing Haisa Textile And Garment Co.,Ltd , https://www.haisafashiones.com
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