Upper Material Flexing Tester A specialized testing instrument designed to evaluate the flexibility, durability, and resistance to cracking of shoe upper materials under repeated bending stress. This machine simulates the natural flexing motion of footwear during walking or running, targeting the upper materials (e.g., leather, textiles, synthetics, or mesh) to assess their performance over time.
Equipped with adjustable flexing angles (typically 90°–180°), cycle speed, and pressure settings, the tester subjects upper material samples to thousands of controlled bends. It identifies critical failure points such as:
Surface cracking or splitting in leather or coated fabrics
Fraying or tearing in woven textiles or mesh
Delamination of layered materials (e.g., bonded fabrics)
Loss of elasticity in stretchable upper materials
Compliant with international standards like ASTM D3514, ISO 5402, and SATRA TM110, this tester is essential for footwear manufacturers, material suppliers, and quality control labs. It ensures that shoe uppers—whether for athletic sneakers, work boots, or casual shoes—meet durability benchmarks, reducing premature wear and enhancing user satisfaction with long-term performance.
