Abstract: The disclosure relates to a packaging container for long-term cold storage of liquid foods for retaining superior flavor and aroma properties in the packed product, and produced from a packaging laminate including a core layer of paper or paper-board, an inside aroma barrier layer of PET and a gas barrier layer, by fold formation and sealing of a planar packaging blank so that all contact surfaces vis-a-vis the packed product consist of the PET layer. The disclosure also relates to a method of fold forming and sealing the packaging laminate into a packaging container according to the invention. Good shelf-life after cold storage for at least six weeks at 8° C., or at least 10 weeks at 4° C. will be attained using the packaging container according to the invention.

Abstract: The disclosure relates to a method and an apparatus (10) for producing a packaging container for liquid foods from a packaging container blank (40) by permanently uniting and sealing at least two of its edges (61, 65) with the aid of a hot melt glue, the hot melt glue being applied along one of the two edges with the aid of a heated applicator roller (11). The circumferential surface (21) of the hot roller is preferably made of hardened steel with a coating (22) countersunk in a groove int he surface along the circumference of the circumferential surface, the coating possessing good slippage properties in relation to the hot melt glue and the coating being of a width which corresponds to the region intended for application. A counter roller (14) acts on the opposite side of the packaging laminate blank against the applicator roller for controlling the outflow of the applied hot melt glue strand.