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Escorene Ultra ethylene vinyl acetate (EVA) copolymer resins are one of ExxonMobil Chemical’s workhorse copolymers for hot-melt packaging adhesive applications such as case and carton sealing. Their compatibility with both hydrocarbon and natural tackifiers and most waxes also makes them an optimal choice for bookbinding applications.
In packaging adhesives, a low viscosity grade of Escorene Ultra EVA copolymer resins is required to optimize speed of operation. Typical vinyl acetate (VA) content is around 28%.
For the hot-melt adhesive needed to hold pages and covers together in bookbinding applications, low to medium MI and high VA grades are used to maximize cohesive strength and flexibility.