This document specifies three test methods (method A, method B and method C) for assessing the degree of transfer of a material's surface colour during dry or wet rubbing and a method (method D) for determining the likelihood of colour bleeding.
The methods are applicable to all footwear uppers, linings and insocks, irrespective of the material. Method D is also applicable to sewing threads and shoelaces.
The methods are:
— method A: to-and-fro square rubbing finger fastness testing machine;
— method B: rotative rub fastness testing machine;
— method C: to-and-fro circular rubbing finger fastness testing machine;
— method D: colour fastness to bleeding.