Soles of the material, good or bad rubber parts, and some will crack, and some will not
PHYLON (MD): EVA two high-pressure molding products, international running shoes, tennis shoes, basketball shoes at the bottom of the main materials, can also be used for casual shoes outsole. Advantages: light, elastic, fine appearance and good flexibility. Easy to clean, hardness, density, tensile force, tear and elongation. Disadvantages: not easy to corrosion, adverse environmental protection, high temperature wrinkle easily, easy to shrink.(5): TPR to TPR after injection molding hot pellets, used to jog, walk, casual shoes insole, outsole. Advantages: easy molding, cheap price. Disadvantages: heavy material, poor wear (no wear), poor flexibility, poor bending (non bending resistance), poor seismic absorption ability(6) performance comparison: TPR ratio is heavy, heavy, flexible, and generally wear resistance. Rubber outsole is also larger, but softer, very wearable, strong grip, but less flexible, generally used in indoor soccer shoes and casual shoes. EVA bottom is very light, elastic, just wear a long time, reduce the elasticity, become a little more practical. PU, MD at the end of which has elastic deformation, the movement is flexible and comfortable, the proportion of small, very light, so are widely used (better than MD, PU density greater damping effect but also relatively heavy), generally large film with rubber, wear non slip.
(1): all kinds of sports shoes for ordinary rubber outsole; advantages: good abrasion resistance, anti slip, flexible, easy to break, good softness, good stability, extension and shrinkage, good hardness and good bending. Disadvantages: heavy weight, easy to spit cream (quality problems), not easy to corrosion (environmental issues)(2) PU: synthetic material of macromolecule polyurethane, often be used at basketball, tennis shoes bottom, also can be used at recreational shoe outsole directly. Advantages: density, high hardness, wear resistance, good flexibility, good oxidation resistance, corrosion is not conducive to environmental protection, easy to fold. Disadvantages: strong water absorption, Yi Bianhuang, easy fracture, poor elongation, water resistance, easy to rot at the bottom.(3) EVA: vinyl acetate copolymer, high polymer material. Used to jog, walk, leisure shoes, foot training shoes. Advantages: light, flexible, flexible and difficult to wrinkle. It has excellent coloring and is suitable for all kinds of climates. Disadvantages: easy to absorb water, not easy to corrosion, adverse environmental protection, easy to dirty.
1, PU bottom, cut a small piece of ignition, flame stability, no green edge, there is melting, dripping phenomenon. PU is the lightest and most wearable. Of course, the price is the most expensive.2, PVC bottom, cut a small piece, ignite the flame, beating with green edge, from the fire extinguished. The soles of PVC materials are cheaper than those of TPR, but they are not of good quality, especially in winter3, the end of EVA, a small cut lit a candle burning and melting drop phenomenon. Of poor quality.4, rubber soles, cut a small piece of light, a tire burning, black smoke. The price is not expensive. Medium quality.5, TPR at the end, cut a small piece, ignited flame beating, burning at a melting point, from the fire will not be extinguished, soluble in a stupid. The soles of TPR materials are better than PVC in elasticity and moderate in price.
