Typical Formulation Ingredients
Phase
Ingredient
Parts by weight
A
Ethylene vinyl acetate (19%, MI=500)
A
Maleic anhydride grafter ethylene alpha olefin copolymers
Typical Properties
Heat stress (24 hrs), 100 gm load at 57° C
Heat stress (24 hrs), 100 gm load at 63° C
Adhesion (average fiber tear) at 63° C, %
Adhesion (average fiber tear) at 54 °C, %
Adhesion (average fiber tear) at -7° C, %
Adhesion (average fiber tear) at -29°C, %
Resulting Properties
EVA Hot Melt Adhesive with Wide Temperature Range for Cellulosics (A) is for a low viscosity hot melt adhesive for bonding Kraft paper. The adhesive has a wide temperature range. The preferred formulation comprises a polymer mixture of an ethylene vinyl acetate polymer with low vinyl acetate content and a functionalized metallocene catalyzed polyethylene copolymer. The hot melt adhesive has wide service temperature range for bonding cellulosic substrates together. The adhesive is well suited for case, tray, carton and bag sealing applications. As demonstrated in the above tables, the adhesive based on EVA with low vinyl acetate and functionalized ethylene alpha olefin copolymers passed the heat stress test at 63°C and has high average fiber tear percentage at low temperatures. The source of this formulation is : WO2014/158396.