ISO 17700 IULTCS/Veslic Rub Fastness Tester
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The square wool felt on friction head (with or without extra balance weights) makes reciprocating friction with leather (stretched or not stretched) on the friction platform for reciprocating friction. After a certain number of friction times, compare the wool felt with gray card and rate the color fastness level.
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.
