Patent ID: 7435483

Claim:
A continuous process for forming a hydroxy-phenoxyether polymer modified paperboard coated with a polyester polymer in an aqueous dispersion, comprising: impregnating or coating a paperboard with a solution, dispersion, or extruded coating of a hydroxy-phenoxyether polymer; heating the coated or impregnated paperboard for a sufficient time and temperature to reduce the moisture content; applying an aqueous dispersion of a water-dispersible polyester resin to at least one surface of the paperboard, and distributing the aqueous dispersion across the paperboard to remove excess dispersion and produce a generally uniform layer of the aqueous dispersion on said surface; heating said paperboard to at least partially cure said polyester; and cooling the paperboard to at least 160° F. to reduce the tackiness of said at least partially cured polyester.