Abstract: A paperboard polymer coated carton having protected board raw edge surfaces for packaging food and non-food products is provided in which a thin slice of the inside carton raw edge surface is removed or skived away from the side seam flap. The thin slice includes all of the inside polymer layers and most of the paperboard. The resulting outside flap is folded into the carton inside over the paperboard raw edge surface, and is flame sealed to the inside polar polymer layer, to seal the paperboard raw edge surface. The sealed edge surface is then flame sealed to the inside of the opposite paperboard surface, thereby creating an additional inside-outside flame seal. By such a process only inside-outside seals are formed or polar-covalent seals.

Abstract: An apparatus which coacts with a fitment supply station to effect continuous motion transfer and application of fitments to carton blanks on a conveyor line. The apparatus includes a rotatable drum having at least one vacuum transfer station disposed in rotational alignment between the fitment supply station and a conveyor release station, and an adjustable backup roll disposed in alignment with the drum and the release station for application of the fitments to cartons. A variable speed drive train matches drum and conveyor line speeds to effect continuous motion fitment transfer.

Abstract: An apparatus which coacts with a fitment application machine to index a die cut fitment web for precise registration and sealing of fitments to carton die cut areas. The apparatus includes an indexing wheel which has a plurality of circumferentially spaced indentations which engage void areas in the web defined by the fitments upon their removal. A gear and rack assembly intermittently rotate the indexing wheel advancing the web through the fitment application machine for sealing operations. Precise adjustment and indexing of the web is effected by a locating pin which engages corresponding bores in the indexing wheel to lock the wheel at defined pre-set circumferential positions.