Leather fatigue refers to the phenomenon that the leather and its coating undergo periodic deformation, which causes its physical and mechanical properties to decrease. This kind of repeated physical damage is lower than the damage strength of the leather.
When the leather is subjected to periodic stress or strain, the surface or the inside of the material produces slight damage. It then gradually develops into a macro crack until it breaks and finally makes the product lose its use function. The flexometer tester is intended to determine the flex resistance of leather.
Performing the bally flex test has great significance for the leather industry.