Ethylene Vinyl Acetate Copolymer Resin

Also it imparts plastic like properties that enable wax to compete effectively with high quality polymeric coatings. 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 resins sealing the deal our elvax ethylene vinyl acetate eva copolymer resins offer a variety of solutions for your sealants in meat and dairy packaging structures footwear wire and cable insulation as well as photovoltaic encapsulants and sheets.

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Ethylene vinyl acetate eva is a random copolymer of ethylene and varying amounts of vinyl acetate va.

Ethylene vinyl acetate copolymer resin.

Ethylene vinyl acetate eva copolymer cas no. Ethylene vinyl acetate or eva is a copolymer of ethylene and vinyl acetate with a structure as shown below. Ethylene vinyl acetate copolymer eva properties and applications. As the va content increases crystallinity decreases until at 50 the eva is.

There are three different types of eva copolymer which differ in the vinyl acetate va content and the way the materials are used. Relevant identified uses of the substance or mixture and uses advised against. It is the basis of many hot melt adhesives when blended with a petroleum wax and a resin tackifier. Ethylene vinyl acetate copolymer eva ethylene vinyl acetate eva is the copolymer of ethylene and vinyl acetate.

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. Having outstanding clarity gloss and weather resistance our nipoflex resins offer flexibility over wide temperature ranges as well as high impact strength elasticity and resistance to flex and environmental stress cracking. Both effects result in a lowering of the tg of the final copolymer.

In addition poly vinyl acetate ethylene vae copolymers possess enhanced toughness flexibility and serviceability. Resin for packaging adhesives film forming and molding resins hot. 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. These material are used when a combination of softness toughness flexibility and polarity are needed.

Emblem in packaging technology 2012. 24937 78 8 ethylene vinyl acetate eva ethylene vinyl acetate copolymer ethylene vinyl acetate polymer 1 2. It is an extremely elastic and tough thermoplastic of excellent clarity and gloss and with little odor. Eva ethylene vinyl acetate this copolymer resin can be used in adhesives sealants and coatings.

Ethylene vinyl acetate eva copolymer resins. Chemical formula diagram. Eva offers good bondability and adhesion to polar substrates in extrusion coating and multi layer film applications. The va comonomer interferes with chain packing reducing crystallinity and thus lowering t m and improving transparency when compared with ldpe.

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