EVA Hot Melt Adhesive for Packaging Film

Typical Formulation Ingredients

Ingredient

Parts by weight

Ethylene vinyl acetate copolymer (EVA)

xx

Microcrystalline wax

xx

Petroleum hydrocarbon resin

xx

Polyisobutylene (low molecular weight)

xx

Antioxidant

x

Processing

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Resulting Properties

PIB additions are also used as adhesion promoters to adhesive and sealant formulations. PIB modified adhesives are often used in packaging applications where adhesion to polyethylene and other difficult to bond plastic films is desired. The above table describes a starting formulation for a modified EVA hot melt that has good bond strength to many packaging films.
EVA resins are considered to be relatively safe to use in food applications. Certain adhesive manufacturers offer EVA resins that are approved for indirect food contact (FDA 21 CFR.175) applications. This allows the adhesive to be used not only in food packaging but also in food cooking and other food preparation applications.

Tips and Tricks

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