Process for the manufacture of paperboard cartons

Details Process for the manufacture of paperboard cartons Process for the manufacture of paperboard cartons

2007-07-03

2007-07-03

Desai, Hemant M. (Department: 3721)

Manufacturing container or tube from paper; or other manufacturi

Container making

Rigid container

C493S068000, C493S133000, C427S532000, C427S331000, C427S388400, C427S391000, C428S500000, C524S458000, C524S517000

Reexamination Certificate

active

11029292

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 1×104dynes/cm2at 115° C. measured at 6.28 rad/sec.

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