Upper Material Flexing Tester

This Upper Material Flexing Tester is designed for determining the flexing resistance or physical damage of all vamps, and soft materials. The specimen is tested by simulating walking. It has functions such as memory and return. Users can set the number of tests themselves.

ISO-4643 Moulded plastics footwear -- Lined or unlined poly (vinyl chloride) boots for general industrial use – Specification.

The standard Specifies requirements, physical properties and marking. Gives the measurement of thickness (Annex A), the determination of the resistance to flexing of the upper material (Annex B), the flexing test of soling material (Annex C) and boot heights (Annex D).