Color fastness is also referred to as color fastness and color fastness. It refers to the resistance of the color of textiles to various influences during processing and use. The fastness rating is based on the discoloration of the sample and the degree of staining of the undyed lining fabric. Testing the color fastness of textiles is a routine test item in internal textile quality testing. >
During use, textiles are exposed to light, washing, ironing, various influences of such as sweat stains, rubbing, chemicals, etc. Some printed and dyed fabrics also undergo special finishing processes, such as resin finishing, flame retardant finishing, sand washing, grinding, etc. This requires that the color of printed and dyed textiles maintain a certain degree of authenticity.
Colour fastness test item
Washing Color fastness:> Sample to each otherr sewn with standard fabrics, wash, wash, dry, wash at the appropriate temperature, alkalinity, bleach and rubbing conditions to get the test results in a short time. Used machine: washing color fastness GT-D07
Color Fastness to Dry Cleaning:Same as Color Fastness to Washing, except washing has changed to Dry Cleaning. Use Qin Shun Machine: Dry Cleaning Washing Drum GT-C36
Color fastness to rubbing>: Will The sample will be placed on the rub resistance tester and rubbed a certain number of times under a certain pressure with a standard white cloth. Each group of samples should do the color fastness to dry rubbing and the color fastness to wet rubbing. Use the gray card to rate the color stained on the standard rubbing white cloth, and the rating obtained is the measured color fastness to rubbing. The color fastness to wrijven, dry rubbing and wet rubbing should be tested. All color swatches should be wiped off. Used model:Electronic tribometer GT-D04
Lightfastness: Textiles are often exposed to light during use. Light destroys the dye and causes what is known as quot;fadingquot;, which causes colored fabrics to lighten or darken, and some color changes also occur. , it is necessary to test the color fastness
. The lightfastness test consists of placing the sample and the blue wool standard cloth with different fastness levels under the specified sunlight exposure conditions, and comparing the sample with the blue wool standard cloth to evaluate the lightfastness. The higher the blue wool label cloth, the better the lightfastness. Using the device:Air-cooledlightfastness tester GT-D02A-1
Color fastness to perspiration>: The sample is sewn with the standard l, the fabric is dipped in sweat, placed on the perspiration fastness tester, and dried in a constant temperature oven. gray cards. Get test results. Different test methods have different sweat ratios, different sample sizes, and different test temperatures and times. Using the Ginlift:Perspiration TesterGT-D09.
Color fastness to chlorine bleaching>: After the fabric has been washed with chlorine bleach solution under certain conditions, evaluate the degree of color change, that is color fastness to chlorine bleaching.
Color fastness to non-chlorine bleaching>: After the fabric has been washed under non-chlorine bleaching conditions, evaluate the degree of color change.the color fastness No positive chlorine bleach.
Color fastness to pressure>: After drying the sample covered with cotton liner, the fabric, in the specified Pressure for a certain time in the heating device under temperature and pressure, and then use the gray card to evaluate the color change of the sample and the coloring of the lining fabric. There are three types of color fastness in hot pressing: dry pressing, wet pressing and wet pressing. Specific test methods should be selected according to different customer requirements and test standards.
Colour fastness to saliva>: Stick the sample to the liner provided, treat with artificial saliva, remove the sample Place it between two plates into the test device and apply specified pressure, then dry the sample and interliner separately and use the gray card to remove the discoloration of the sampleand evaluate the spots of the interlining.
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