I. Instrument in Spotlight: Efficiency & Precision
In the modern leather quality inspection realm, the four-station leather friction colorfastness tester has increasingly come under the spotlight of industry insiders owing to its high efficiency and precision. With a unique four-station parallel design, it can test four leather samples' friction colorfastness simultaneously. This innovation greatly enhances work efficiency, drastically reducing the time needed for individual tests and enabling faster completion of leather quality inspections to meet the industry's growing demands.
II. Testing Process: Mimic Friction for Fastness Check
The instrument's testing process is rigorous and scientific. It precisely simulates the friction scenarios leather may face in daily use. During the test, the test head moves back and forth on the leather surface at a constant speed and pressure. This simulation accurately reflects the real-world stress and friction conditions on leather. After friction, the staining condition on the friction cloth is carefully evaluated. By observing the degree of color staining on the cloth, the leather's colorfastness grade is accurately determined according to strict standards, providing a reliable basis for leather quality.
III. Evaluation Grading: Standardized Rules for Results
In terms of evaluation, strict adherence to GB/T 6151 is maintained. Comparisons are made under artificial light or northern daylight. The tested and untested parts are compared, and corresponding geometric-graded gray sample cards are used for grading. For color transfer, "staining degree" is used, while for damage, "color change" is applied. When the grading falls between two levels, the lower one (indicating a worse situation) is chosen. If repeated tests yield different gradings, the lower of the two is taken as the final result, ensuring accuracy and fairness in evaluation.
IV. Testing Principle: Friction Comparison for Grade
The testing principle is based on the back-and-forth friction of a square wool felt on the leather (stretched or unstretched) on the friction platform by the friction head (with or without an additional weight). After a certain number of frictions, the wool felt is compared with a staining gray card, and the tested leather is compared with a color-loss gray card to determine the grades. This principle accurately reflects the "color-loss" degree of the leather surface or coating and the staining degree of the wool felt, thus assessing color transfer.
V. Instrument Overview: Dry & Wet Tests Show Advantages
This instrument is specifically designed for testing the friction fastness of leather surfaces. During testing, a dry or wet white wool felt is wrapped around the friction surface and then moved back and forth on the test piece clamped on the test bench. It offers both dry and wet testing methods. This variety enables a more comprehensive assessment of leather's friction colorfastness under different environments, meeting the inspection needs of various leather products and usage scenarios and providing richer data for leather quality control.
VI. Advanced System: User-Friendly Operation Aids
The four-station leather friction colorfastness tester is equipped with an advanced control system. Users can easily set testing parameters, monitor the testing progress in real-time, and obtain detailed test reports through a touch screen. This convenient operation not only simplifies the testing process, enabling operators to complete tests more efficiently, but also provides strong data support for subsequent leather quality control. The detailed test reports allow enterprises to promptly understand the leather's quality status and take corresponding improvement measures.
VII. Structural Design: Practical & Durable, Cost-Effective
In terms of structural design, the instrument fully considers practicality and durability. Its sturdy casing and precise transmission system ensure stability and reliability during long-term operation, reducing testing interruptions and errors caused by instrument failures. Moreover, the test head is easy to replace and maintain, lowering users' operating costs. Users don't need to spend much time and effort on complex maintenance, allowing them to focus more on leather quality inspection.
