The resin is ethylene vinyl acetate copolymer, and the vinyl acetate content is generally between % and %. Compared with polyethylene, due to the introduction of vinyl acetate monomer into the molecular chain, the high crystallinity is reduced, flexibility, impact resistance, filler compatibility and heat sealing properties are improved, and it is widely used in foam shoe materials , functional shed film, packaging film, hot melt adhesive, wires and cables, toys and other fields. It is a relatively common midsole material. It is usually called primary foam and has a certain cushioning effect. However, this material is very slippery, so it is usually mixed with hard rubber. It is an ordinary material that is used in many sports shoes. There are both, but it is difficult to compare with them in terms of effects.
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