Color fastness to ultra-violet Light

Objective

Yellowing phenomena of white colours can be a big nuisance. The purpose of this test is to cause accelerated colour ageing through exposure to UV, to anticipate the in-use behaviour of leather.

Principle

The test consists of exposing the material to ultraviolet rays in a special box for a specified time, in order to visually assess the colour change to the finish or coating. The deterioration is evaluated against greyscales.

Type: Physical and mechanical test
Standard: NF G 52 300
Product: Footwear
Criteria: Color fastness
Component: Outsole