Ethylene vinyl acetate (EVA) is a copolymer of polyethylene that is chemically similar to PE, except that EVA has some vinyl acetate (VA) branched or branched. Usually between 5 and 20% VA is added to PE, depending on the desired properties. VA causes adhesion or polarity of the polymer, which leads to greater compatibility of the polymer with the filler material and also increases the strengthening of its adhesion properties. Most of the uses of EVA multilayer blowing films are in food and electronic packaging.
