Leather Rubbing Colorfastness Tester
Standards
ISO 11640Leather -- Tests for colour fastness -- Colour fastness to cycles of to-and-fro rubbing.
SATRA PM 173Reference standard of footwear testing content and methods.
QB/T 2537-2001Leather -- Tests for colour fastness --Colour fastness to reciprocating rubbing.
DIN 4843Safety Footwear; Safety Requirements, Testing
QB/T 2226Shoelace wear test method, light industry standards.
GB/T 20991-7.3Personal protective footwear test method.
Consumables
Friction material:
White wool felt, size 15mm × 15mm. The punched pure wool felt piece should meet the following requirements: pH of water extract between 5.5 ~ 7.0; mass per unit area (1750 ± 100) g / m2, thickness (5.5 ± 0.5) mm.
Technical Parameters
1. Test bench:a horizontal metal platform; a holder for fastening the leather to the platform, leaving approximately 80mm exposed; a device with which the leather may be extended 10% to 20% linearly in the direction of rubbing (sample size 120mm × 20mm).
2. Test column:weight (500 ± 25) g. It can be moved, but also firmly fixed. including:
A) Test head area: 15mm × 15mm;
B) Device for adjusting the test head to bring the felt pad into horizontal contact with the test platform;
C) Load bearing blocks: (500 ± 10) g. After loading, the total mass of the test column is 1000g;
D) Adjustment device: adjust the test column up and down so that the test head makes horizontal contact with sample.
3.Device that drives test bench for reciprocating motion:test head makes forward-backward motion with a stroke of 35mm ~ 40mm at a frequency of (40 ± 2) cycles / min.
4.Counter:LCD digital display, round-trip as one time, the number of cycles can be set to 5 to 500 times.
5.Device that can adjust the test column in the horizontal direction (optional):the test head can be rubbed against the leather samples at 2 to 3 different angles.
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