ADHESION PROMOTION TO DIFFICULT SUBSTRATES FOR HOT MELT ADHESIVES

摘要

The present invention provides an adhesive composition with improved adhesion to a difficult substrate as a hot melt adhesive composition, particularly at refrigerator/freezer temperature or high temperature. The composition of the present invention comprises a base polymer comprising an ethylene vinyl acetate containing polymer, a tackifier, an adhesion promoting additive comprising at least one semi-crystalline polymer having a weight average molecular weight of about 30,000 Daltons or less, and an optional wax, and an optional oxidizing agent. You need an inhibitor. It has been found that the adhesion promoting additive of the present invention enhances the adhesion of hot melt adhesive compositions with ethylene vinyl acetate containing polymers, particularly at high or low refrigerator and freezer temperatures, where other conventional adhesives have not been successful. .