How to distinguish the material and function of the sole of sports shoes
The soles of sports shoes have different functional effects according to the purpose of sports use. The most important thing affecting sports shoes is the application of sole and upper materials. Let's discuss the differences in physical properties of different sports shoe sole materials:
Rubber: used in various sports shoe soles.
Advantages: good wear resistance, non-slip, elastic, not easy to break, good softness, good stretchability, stable shrinkage, good hardness, good bendability.
Disadvantages: heavy weight, easy to spit frost (a quality problem), not easy to corrode (environmental protection problem).
sports soles
PU: Polymer polyurethane synthetic material, which is often used in the midsole of basketball and tennis shoes, and can also be directly used in the outsole of casual shoes.
Advantages: high density, high hardness, good wear resistance, good elasticity, good oxidation resistance, easy to corrode, easy to corrode, easy to wrinkle.
Disadvantages: strong water absorption, easy to yellow, easy to break, poor elongation, not resistant to water, easy to rot.
EVA: vinyl acetate copolymer, polymer material. Commonly used in the midsole of jogging shoes, casual shoes, and training shoes.
Advantages: light weight, good elasticity, good flexibility, not easy to wrinkle, excellent colorability, suitable for various climates.
Disadvantages: easy to absorb water, not easy to corrode and environmentally friendly, easy to get dirty.
PHYLON (MD): It is an EVA secondary high-pressure molding product. It is the main material used in the midsole of international running shoes, tennis shoes and basketball shoes. Can also be used for casual soles.
Advantages: light weight, elastic, beautiful appearance, good softness, easy to clean, good hardness, density, tensile strength, tear and elongation.
Disadvantages: not easy to corrode and environmentally friendly, easy to wrinkle and shrink at high temperature.
TPR: TPR pellets after hot-melt injection molding, often used for outsoles of jogging, jogging, and casual shoes.
Advantages: easy to form, cheap;
Disadvantages: heavy material weight, poor abrasion resistance, poor flexibility, poor bendability (not foldable), poor shock absorption
