Ethylene Vinyl Acetate Copolymer Eva

On a weight basis ethylene is far more effective a fact that is reflected in the low tg of polyethylene homopolymer below 80 c.

Ethylene vinyl acetate copolymer eva.

Ethylene vinyl acetate is a type of plastic a polymer with a wide variety of uses both residential and industrial. Ethylene vinyl acetate eva copolymers are used in extrusion film processes for applications including packaging surface protection and greenhouse covers and in photovoltaic cell encapsulation. The food and drug administration fda has stated that ethylene vinyl acetate is safe when used in food production packaging or transportation and it s not an especially dangerous material. Ethylene vinyl acetate eva copolymers ethylene vinyl acetates are leading polymers for hot melt manufacturing due to their high versatility.

Eva copolymers are used in molded caps and seals footwear and car interiors. Ethylene vinyl acetate eva also known as poly ethylene vinyl acetate peva is the copolymer of ethylene and vinyl acetate the weight percent of vinyl acetate usually varies from 10 to 40 with the remainder being ethylene. It is an extremely elastic and tough thermoplastic of excellent clarity and gloss and with little odor. In addition poly vinyl acetate ethylene vae copolymers possess enhanced toughness flexibility and serviceability.

There are three different types of eva copolymer which differ in the vinyl acetate va content and the way the materials are used. Ethylene vinyl acetate copolymer eva properties and applications. Ethylene vinyl acetate or eva is a copolymer of ethylene and vinyl acetate with a structure as shown below. Most important symptoms and effects both acute and delayed.

Flexible eva ethylene vinyl acetate is the copolymer of ethylene and vinyl acetate. Eva is flexible has good clarity and is resistant to ultraviolet radiation. They are the base polymer in many adhesive resin formulations and in. 1272 2008 regulation ec no 1907 2006 ethylene vinyl acetate copolymer rev 1 01 2013 page 3 4 2.

It s an extremely elastic material that can be processed like other thermoplastics. Eva has many attractive properties including low cost excellent. These material are used when a combination of softness toughness flexibility and polarity are needed. Eva offers good bondability and adhesion to polar substrates in extrusion coating and multi layer film applications.

Both effects result in a lowering of the tg of the final copolymer. The material has low temperature toughness stress crack and uv radiation resistance. Ethylene vinyl acetate eva copolymer safety data sheet international polymers company safety data sheet according to regulation ec no. Biodegradable ethylene vinyl acetate eva plastic is the copolymer of ethylene and vinyl acetate polymers.

Eva based hot melts are able to fulfill various requirements in applications such as packaging bookbinding or label sticking.