Eva Ethylene Vinyl Acetate Properties

It is the basis of many hot melt adhesives when blended with a petroleum wax and a resin tackifier.

Eva ethylene vinyl acetate properties. It is an extremely elastic and tough thermoplastic of excellent clarity and gloss and with little odor. Ethylene vinyl acetate copolymer emulsion. Eva is used in several applications thanks to the varied properties it possesses. Ethylene vinyl acetate properties ethylene vinyl acetate is a flexible and transparent thermoplastic.

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. Ethylene vinyl acetate offers good low temperature flexibility. The properties are largely dependent on the molecular weight and the vinyl acetate content. The va comonomer interferes with chain packing reducing crystallinity and thus lowering t m and improving transparency when compared with ldpe.

As the va content increases crystallinity decreases until at 50 the eva is. The graph bars on the material properties cards further below compare eva to. For more specific values follow the links immediately below. Ethylene vinyl acetate eva copolymers are random linear copolymers produced by the copolymerization of ethylene and vinyl acetate va either in a high temperature and high pressure free radical process or for high vinyl acetate materials in emulsion.

It shows good chemical resistance. This page shows summary ranges across both of them. Eva shows good barrier and stretch properties. Ethylene vinyl acetate copolymer eva properties and applications.

Eva ethylene vinyl acetate this copolymer resin can be used in adhesives sealants and coatings. Ethylene vinyl acetate eva is a random copolymer of ethylene and varying amounts of vinyl acetate va. Emblem in packaging technology 2012. Also it imparts plastic like properties that enable wax to compete effectively with high quality polymeric coatings.

Ethylene vinyl acetate terpolymer ethylene vinyl acetate maleic anhydride properties and applications. The properties of eva include two common variations. Ethylene vinyl acetate terpolymers eva mah are random copolymers of ethylene vinyl acetate and maleic anhydride produced by high pressure polymerization in tubular reactors. Ethylene copolymers top all thermoplastics middle and the entire database bottom.