Process for the manufacture of paperboard cartons

Abstract

This invention relates to an improvement in a process for forming a carton from paperboard stock comprising the steps: applying an aqueous based adhesive to select parts of a paperboard carton blank obtained from a paperboard feedstock; drying the aqueous based adhesive; folding the select parts of the adhesive coated carton blank onto cooperating parts of the paperboard blank; and, heat sealing the select and cooperating parts thereby forming the carton; wherein the aqueous based adhesive is comprised of a vinyl acetate/ethylene polymer formed by emulsion polymerization and having (a) a crystalline melting point (Tm) ranging from 35 to 110° C., preferably 50 to 90° C.; measured at a heat rate of 20° C./minute and, (b) a tensile storage modulus of at least 1×104 dynes/cm2 at 115° C. measured at 6.28 rad/sec.

Dependencies are inferred from the claim text.