Colour Change Under Abrasion
topic
Colour fastness to abrasion evaluates both wet and dry crocking, rubbing a white crock cloth over a dyed fabric specimen under standardised pressure and counting cycles while grading colour transfer to the white cloth using the grey scale for staining from grade 5 (nil transfer) to grade 1 (severe transfer).
Role
Ensures dyed and printed textiles do not transfer colour to adjacent surfaces in use, critical for upholstery, denim, and leather goods where colour migration onto skin or contact materials represents a significant quality failure.