Flame retardant fabrics have different dye fastness requirements

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Thermal protection performance safety protection flame retardant knitted fabric

The dye fastness of flame retardant fabrics has high quality requirements for dyed and printed fabrics. The nature or degree of variation in the dyeing state can be expressed by dye fastness. It is related to yarn structure, fabric organization, printing and dyeing method, dye type and external force. Different dyeing fastness requirements will cause great cost differences and quality differences.
1． Sunlight fastness of flame retardant fabrics
Sunlight fastness refers to the degree of discoloration of colored fabrics due to sunlight. The test method can be either sunlight exposure or insolation machine exposure. The fading degree of the sample after exposure is compared with the standard color sample. It is divided into 8 levels, with level 8 being better and level 1 being poor. Fabrics with poor sun fastness should not be exposed to the sun for a long time and should be placed in a ventilated place to dry in the shade.
2. Rubbing fastness of flame retardant fabrics<br/The rubbing fastness refers to the degree of color fading of dyed fabrics after rubbing, and can be divided into dry rubbing and wet rubbing. The rubbing fastness is evaluated based on the staining degree of white cloth, which is divided into 5 levels (1~5). The larger the value, the better the rubbing fastness. The service life of fabrics with poor rubbing fastness is limited.
3. Washing fastness of flame retardant fabrics: Washing or soaping fastness refers to the degree of color change of dyed fabrics after being washed with detergent. The gray grading sample card is usually used as the evaluation standard, that is, the evaluation is based on the color difference between the original sample and the faded sample. Washing fastness is divided into 5 levels, level 5 is better and level 1 is worse. Fabrics with poor washing fastness should be dry-cleaned. If wet-cleaned, you need to pay more attention to the washing conditions, such as the washing temperature should not be too high and the washing time should not be too long.
4． Ironing fastness of flame retardant fabrics
Ironing fastness refers to the level of discoloration or fading of dyed fabrics when ironed. The degree of discoloration and fading is measured by the staining of other fabrics by the iron at the same time. Ironing fastness is divided into levels 1 to 5, with level 5 being better and level 1 being worse. When testing the ironing fastness of different fabrics, the test iron temperature should be selected.
5． Perspiration fastness of flame retardant fabrics<br/Perspiration fastness refers to the level of color fading of dyed fabrics after being soaked in sweat. Because the composition of artificially prepared sweat is different, the perspiration fastness is usually measured in combination with other color fastnesses in addition to individual measurements. The perspiration fastness is divided into levels from 1 to 5, with the higher the value, the better.
6． Sublimation fastness of flame retardant fabrics
Sublimation fastness refers to the degree of sublimation phenomenon that occurs in dyed fabrics during storage. The sublimation fastness uses a gray grading sample card to evaluate the degree of discoloration, fading and white cloth staining of fabrics after dry heat pressing. It is divided into 5 levels, with level 1 being poor and level 5 being good. The dye fastness of abnormal fabrics generally requires reaching level 3~4 to meet the needs of wearing.
：Textile

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