A Little Common Sense About Testing the Electric Friction Color Fastness Tester

1. Test Electric Rubbing Color Fastness Tester General sampling rules: Each color and pattern in the sample should be tested;

2. Sample Size and Quantity:

·Conventional Electric Rubbing Color Fastness Tester: The minimum sample size is 50X130mm; 2 pieces each in the longitude and latitude directions. When used in AATCC series standards, take samples at a 45 degree angle along the warp and weft threads and take only 2 pieces.

·Rotating electric friction color fastness tester: the sample size is not less than 25X25mm; it is necessary that each color and pattern be tested.

·Curved surfaceElectric friction color fastness tester: the sample size is not less than 30X220mm; 2 pieces each in longitude and lattitude.

Test samples and white test friction cloths, etc., must be conditioned for at least 4 hours under standard atmospheric pressure (temperature: 20°C, humidity: 65%); or for wool, cotton For raw materials with higher moisture recovery, the humidity adjustment time should be increased.

Air humidity will affect the friction coefficient of the fabric surface. Moisture will also change the morphology of the fibers in the micro state and change the stress area of ​​the fabric surface. Moisture control is a relatively important step and should not be abandoned to save testing time, especially for fabrics made from high moisture regain fibers.

3. Moisture content of wet rubbing: Except for the moisture content of AATCC series standards of 65%, other standards are 95-100%.

The differentMoisture contents in wet rub directly affect wet rub test results. The moisture content must be strictly controlled. After wetting the friction cloth, the test should be completed within the specified time; otherwise, due to long-term use, the water on the friction cloth will evaporate, thereby reducing the moisture content. Thus affecting the test results.

4. The number of frictions of the electric friction color fastness tester:

Conventional electric friction color fastness tester: for 10 exchanges, the frequency is 1 exchange /second ; the running range 10 cm.

·Rotating Electric Friction Color Fastness Tester: Rotate the crank 20 times and the friction head 40 times.

·Curved Surface Electric Friction Color Fastness Tester is mainly used for JIS L0849 Type II, the nshadow of times is 100 times, the stroke is 20cm.

When using When testing with a manual rubbing color fastness tester, please pay attention to the start and end positions end of the rubbing stroke. Generally, to make the rubbing cycle exactly 10 reciprocating movements, we can set the starting point at the innermost position of the rubbing color fastness tester, so that when rubbing 10 times, it is easier to determine where the frictional motion returns to the starting point. .

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