The Rotary Crockmeter is primarily used to test the color fastness of fabrics, leather, and other materials under friction. It simulates the friction experienced during actual use to assess dye fastness and color durability. Color fastness is a key indicator of textile quality, especially during daily wear or washing, where friction can cause dye migration, affecting appearance and performance.
Complies with the following standards:
AATCC 116 ISO 105 X16
Technical Parameters:
A. Abrasion head diameter: 16mm;
B. Applied pressure: 1134g;
C. 1.125 turns clockwise followed by counterclockwise rotation;
D. Equipped with a standard abrasion fabric fixture;
F. Specimen clamps are made of spring steel, ensuring quick specimen tightening and reproducible test results;
G. Equipment is AATCC-approved.
Working Principle
The core principle of the rotary friction color fastness tester is to test the color fastness of dyes by simulating the actual conditions fabrics may encounter during friction. It consists of a rotating mechanism and a friction block. The fabric sample is fixed to the friction mechanism with a clamp. The friction block then rubs against the fabric surface, simulating the effects of friction on the dye.
The specific operating steps are as follows:
1. Sample Preparation: According to standard requirements, cut the fabric sample to be tested into the specified size, typically 10cm x 4cm, ensuring the sample's flatness and surface cleanliness.
2. Installation and Setup: Mount the fabric sample on the friction mechanism and set the test parameters, including the number of frictions, pressure, and friction speed.
3. Friction Test: Once started, the friction block begins to rotate or move across the fabric surface in a specified pattern, simulating the effects of friction on the fabric's color.
4. Testing and Evaluation: After the friction test is completed, remove the sample, observe its color changes, and evaluate the color difference against a standard color chart. During the test, the friction generated by friction will cause the dye to migrate on the surface of the fabric, and the extent of this migration and the impact on adjacent materials will be examined.
Operation Instructions
The operation of a rotary rubbing colorfastness tester is relatively simple, but the following points should be noted:
1. Sample Preparation: Place the textile sample to be tested on a standard cotton cloth and secure it with a clamp. Ensure that the sample is flat and wrinkle-free, and that the edges do not fall off during the test.
2. Parameter Settings: Adjust parameters such as test pressure, speed, and number of rubbing strokes according to the test standard. Parameter requirements may vary between standards, so please carefully read the relevant standard documents.
3. Start the Test: Press the start button to begin the tester. During the test, carefully observe the friction between the sample and the standard cotton cloth and record the test data.
4. Result Evaluation: When the preset number of rubbing strokes is reached, the instrument automatically stops. Remove the sample and standard cotton cloth and quantify the degree of color transfer on the rubbing cloth using a colorimetric chart or colorfastness rating instrument.
5. Recording and Reporting: Record the test results in the test report and assign a grade or judgment to the sample based on the evaluation results.
Maintenance
To ensure the long-term stable operation and accurate test results of a rotary crockmeter, regular maintenance is required. Specific measures include:
1. Cleaning and Maintenance: Regularly clean the test surface and crockmeter head to remove residual fibers and impurities. Avoid using highly corrosive cleaning agents to prevent damage to the surface.
2. Mechanical Component Inspection: Regularly inspect the condition of mechanical components such as the motor, drive belt, and wheels to ensure they are free of wear and looseness. If any abnormalities are detected, replace or repair them promptly.
3. Electrical System Inspection: Check that the power cord is securely plugged in and undamaged, and that components such as the circuit boards, sensors, and display in the control system are functioning properly. If any faults are detected, repair them promptly.
4. Calibration and Verification: Regularly calibrate and verify the tester to ensure the accuracy and reliability of its test results. During calibration, a standard sample should be used for comparison testing.
In summary, the rotary crockmeter, as an important instrument in the field of textile testing, is widely used and powerful. By understanding its basic principles, functional characteristics, application scope, operation methods and maintenance, we can better utilize this equipment to provide strong support for all links in the textile industry chain.
