Eva Ethylene Vinyl Acetate Melting Point

Ethylene vinyl acetate or eva is a copolymer of ethylene and vinyl acetate.

Eva ethylene vinyl acetate melting point.

Eva has good flex crack and puncture resistance is relatively inert adheres well to many substrates and is heat sealable which makes its use in film applications. Eva properties vary depending on the comonomers contents. Ethylene vinyl acetate solution polymerization. It is an extremely elastic and tough thermoplastic of excellent clarity and gloss and with little odor.

Ethylene vinyl acetate copolymer eva properties and applications. Most commonly used evas contain between 19 and 28 va. Ethylene vinyl acetate eva eva is a thermoplastic further classified as an ethylene copolymer. Ethylene vinyl acetate eva copolymers also kindly donated by repsol s a.

Eva hot melt adhesive is a 100 solid transparent flexible ethylene vinyl acetate copolymer. 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 normally categorized by percent va content and melt flow rate mfr or melt index mi. There are three different types of eva copolymer which differ in the vinyl acetate va content and the way the materials are used.

Eva is the copolymer of ethylene and vinyl acetate. It is an extremely elastic and tough thermoplastic of excellent clarity and gloss with little odor. Eva resin eva resin properties uses. Spain under commercial names of alcudia with different va contents ranging 7 to 33 wt and mfi between 2 and 800 were used as modifying agents table 1.

Ethylene vinyl acetate eva resins may thermally degrade and release corrosive by products. Emblem in packaging technology 2012. To avoid improper resin selection contact pmc for additional help in determining the exact engineering resin required for your application. Ethylene vinyl acetate eva is a random copolymer of ethylene and varying amounts of vinyl acetate va.

Va contents relate to eva melting point table 3 and the mfi is a measure of mass of polymer flowing. It can have a moderately low tensile strength among thermoplastics. 1 price 2 plastics polymers ethylene vinyl acetate 1 2 341 ethylene vinyl acetate a k a. Ethylene vinyl acetate or eva is a copolymer of ethylene and vinyl acetate with a structure as shown below.

The va comonomer interferes with chain packing reducing crystallinity and thus lowering t m and improving transparency when compared with ldpe. Fda status information elvax 460a resin complies with food and drug administration regulation 21 cfr 177 1350 a 1 ethylene vinyl acetate copolymers subject to the limitations and requirements therein.