Ethylene vinyl acetate (EVA) is a copolymer of ethylene and vinyl acetate. Increasing the percentage of vinyl acetate increases the polarity, increases filler acceptance, reduces stiffness, reduces the melting temperature, increases clarity and gloss, and improves adhesion to polar substrates. EVA is commonly used for hot melt adhesives, film, foams, hose and tube, solar cells, medical packaging, as well as for flexible moldings and extrusions.