China EVA foam is an ethylene - vinyl acetate (vinyl) acetate copolymer is ethylene (E) and vinyl acetate (VA) obtained by copolymerizing, Product name: Ethylene Vinyl Acetate, referred to as EVA, or E / VAC. General vinyl acetate (VA) content of 5% to 40%.

Compared with polyethylene, China EVA foam introduced in the molecular chain as a vinyl acetate monomer, which reduces the crystallinity, improved flexibility, impact resistance, heat resistance and compatibility packing sealing performance. In general, China EVA foam resin performance depending on the molecular chain of the content of vinyl acetate.

First, the characteristics

China EVA foam resin is characterized by good flexibility, rubber-like elasticity at -50 ℃ still able to have good flexibility, transparency and surface gloss, good chemical stability,China EVA foam anti-aging and ozone resistance strength , non-toxic. Good mixing with fillers, coloring and good processability.

Adjustable thus constituting component ratio due to meet different application needs,China EVA foam vinyl acetate (VA content) content is higher, its transparency, flexibility and toughness will be relatively increased.

Polymerization using pressure bulk polymerization (plastics),China EVA foam solution polymerization (PVC processing aids), emulsion (binder), suspension polymerization. Vinyl acetate (VA) content higher than 30% by emulsion, vinyl acetate content of low to high pressure bulk polymerization.