Tuote ja menetelmä toispuoleisen kuvioidun liuotinperusteisen polymeeripäällysteen omaavan paperikartongin kuumasaumaamiseksi

摘要

The composite material package blank formed from a paperboard web has a barrier coating of a thermoplastics polymer film uniformly applied to an inside surface thereof and an outside surface of the paperboard web is printed with aqueous or solvent based inks and includes selectively positioned areas of a patterned solvent based polymer material applied to it. The paperboard web is folded about score lines to provide side walls integrally projected from a bottom panel. The side walls are laterally linked by integral gusset webs, at least one of the side walls having a cover panel integrally appended to it from a hinge score line, the cover panel has a flap extension for lapping a side wall other than the one side wall and is secured to it by a fuse bond between the inside surface coating of the polymer film on the flap extension and a selectively positioned area of the patterned solvent based polymer material on the outside surface of the other side wall.