Ethylene vinyl acetate copolymer resin (EVA resin for short) is the fourth largest ethylene series polymer after high-density polyethylene, low-density polyethylene, and linear low-density polyethylene.

Compared with polyethylene, EVA reduces high crystallinity, improves flexibility, impact resistance, filler compatibility, and heat sealing function by introducing vinyl acetate (VA) monomer into its molecular chain. It is widely used in foam shoe materials, sports equipment, packaging liners, hot melt adhesives, wires and cables, and toys.

Examples of the use of EVA products in our daily lives

1. Foam shoe material

Shoe materials are the main application scope of EVA resin in China. The content of vinyl acetate in EVA resin used in shoe materials is generally between 15% and 22%. Due to its softness, good elasticity, and chemical corrosion resistance, EVA resin blended foam products are widely used in the soles and interior materials of high-end travel shoes, hiking shoes, slippers, and sandals.

2. Sports equipment

EVA material has outstanding anti-corrosion properties, soft and comfortable hand feel, light weight, unique waterproof function, and is not easily deformed when used on sports equipment handles. Its appearance dries quickly and does not add carrying burden.

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3. Packaging lining

EVA packaging lining has outstanding shock and pressure reducing effects, and the material itself is green and environmentally friendly. It has good flame retardant and waterproof effects, especially in terms of heat insulation and moisture resistance, greatly improving the protection of the product.

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4. Hot melt adhesive

Hot melt adhesive mainly composed of EVA resin is very suitable for automated assembly line production due to its solvent-free nature, non polluting environment, and high safety. Therefore, it is widely used in wireless book binding, furniture edge sealing, installation of cars and household appliances, carpet coating, and metal anti-corrosion coating.

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5. Wires and cables

With the continuous development of computer and network engineering, people are increasingly using halogen-free flame-retardant cables and silane cross-linked cables for the sake of computer room security. Moreover, EVA resin has outstanding filler inclusiveness and crosslinkability.

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6. EVA toys

Toys processed with EVA resin have excellent softness and elasticity, and their exterior gloss and chemical stability are also very good. They are anti-aging, ozone resistant, non-toxic, and are very good environmental protection materials.

EVA puzzles, swim boards, shower caps, pet toys, etc. are soft and will not harm the skin. They are no longer afraid of pain or gum damage when eating toys.