Leather - Tests for colour fastness - Colour fastness to cycles of to-and-fro rubbing
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Our testing lab performs the DIN EN ISO 11640 standard (colour fastness to rubbing for leather) quickly, competently, and in an accredited procedure.
This test method is used to determine the rub fastness of leather surfaces under mechanical stress. The surface of a leather sample is rubbed under defined pressure and a specified number of cycles with wool felt in order to assess the resistance of the colour to abrasion (rubbing a leather surface with wool felt is also known as the “VESLIC rub fastness test“). The rubbing procedure can be carried out dry, wet, or using artificial perspiration.
After the test, the color change of the leather sample (evaluated according to DIN EN ISO 105-A02) and the staining of the felt (evaluated according to DIN EN 20105-A03) are assessed using standardised grey scales, which serve as references for different degrees of colour fastness. Based on these results, the samples are rated on a scale from 1 (very low fastness) to 5 (very high fastness).
The results of testing according to DIN EN ISO 11640 provide a reliable assessment of the color stability and durability of leather products under mechanical stress. The standard is also used in the test lab for handling customer complaints and quality issues, for example with leather materials used in upholstered furniture.
Other important country codes for this standard: BS / NF / SN / UNE / UNI EN ISO 11640