Sports shoes sole material and functions to be discussed in this article
Sports shoes sole have different functional effects depending on the purpose of sports use. The most important ones affect sports shoes are the application of sole and upper materials. Now we discuss the difference of physical properties of difference sport shoes sole material:
Rubber: Used for a variety of sports shoes sole.
Advantages: good wear resistance, non-slip, elastic, not easy to break, good softness, good stretch, stable shrinkage, good hardness, good bending.
Disadvantages: Heavy weight, easy to spit cream (is a quality problem), not easy to corrosion (environmental issues).
PU: Polymer polyurethane synthetic material, commonly used in basketball, tennis shoes as mid-sole, can also be directly used for casual shoes outsole.
Advantages: high density, high hardness, good wear resistance, good elasticity, good oxidation resistance, easy to erode, easy to erode, and easy to wrinkle.
Disadvantages: Strong water absorption, easy yellowing, easy to break, poor elongation, water resistance, perishable.
EVA: vinyl acetate copolymer, polymer material. Commonly used in jogging, casual shoes, training shoes mid-sole.
Advantages: light weight, good elasticity, good flexibility, not easy to wrinkle, with excellent coloring, suitable for all kinds of climate.
Disadvantages: easy to absorb water, not easy to corrode environmental protection, easy to 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. It can also be used for casual shoes outsole.
Advantages: Light weight, elastic, fine appearance, good softness, easy to clean, good hardness, density, tensile strength, tearing and elongation.
Disadvantages: not easy to corrode environmental protection, easy to wrinkle at high temperatures, easy to shrink.
TPR: TPR pellets after hot melt injection molding, commonly used in jogging, slow pace, casual shoes outsole.
Advantages: easy to shape, cheap;
Disadvantages: Material weight heavy, poor abrasion, poor softness, poor bending (not folding), poor shock absorption