EVA is a vinyl acetate copolymer for short, the general vinyl acetate (VA) content in 5% ~ 40%. Compared with the polyethylene, EVA due in the molecular chain introduced the vinyl acetate monomer, thereby reducing the high crystallinity and flexibility, impact and filler miscible and heat sealing performance, are widely used in the field of foaming shoes material, function greenhouse film, packaging film, hot melt adhesive, wire and cable and toys.