A method of and a device for folding a bottom of a package, which includes a sleeve of packaging material with a transversal seal in the end of the bottom forming portion of the package, the portion having the shape of a fin. The method includes folding the fin and forming primary flaps, breaking corners on the folded fin between the primary flaps and the edge between the part of the sleeve forming the bottom and the rest of the sleeve, such that secondary flaps are folded in between the primary flaps and the fin, the secondary flaps thereby being folded essentially towards each other, folding the primary flaps towards each other, and pressing the primary flaps towards the remaining part of the bottom forming part of the sleeve.

A flat-sitting bottom end closure for liquid filled, thermoplastic-coated paperboard containers, and mechanism for forming same. The mechanism includes an indexible rotor having a plurality of mandrels on which tubular container blanks are mounted, wherein each mandrel has an end cap defining a configuration which, in conjunction with a complementary pressure pad, produces four flat corner portions or pedestals on the container bottom end closure when confined between the pressure pad and each end cap.

A package with bottom panel stand-offs includes a plurality of upstanding side walls, each side wall contiguous or sealed to adjacent side walls, a sealed top panel, and a sealed bottom panel. The sealed bottom panel has a generally planar portion and three stand-offs formed therein. The three stand-offs are non-coplanar with the generally planar region and define a triangular pattern other than a right angle triangle. The stand-offs raise the generally planar portion above and spaced from a surface on which the package rests. A method for forming a stable carton is also disclosed.

A carton having a primary elevated bottom portion extending along the length of an exposed raw paperboard edge to protect the carton and to prevent moisture absorption. The carton also having a secondary elevated bottom portion substantially within the primary elevated portion and having an elevation greater than the primary elevated bottom portion. Additional elevated portions are provided for additional raw paperboard edges on the bottom of the carton. The present invention alleviates the problem of cartons having soggy bottoms since the point of absorption, the raw paperboard edge, is elevated above the moisture which may be present during distribution from the packaging machine to the retailer. The elevated bottom portion is actually inverted into the carton with planar portions resting on the surface to support the carton.

A bottom forming apparatus having a mandrel cap and a sealing plate configured to create a carton with an elevated bottom. The present invention alleviates the problem of cartons having soggy bottoms since the point of absorption, the raw paperboard edge, is elevated above the moisture which may be present during distribution from the packaging machine to the retailer. The elevated bottom portion is actually inverted into the carton with planar portions resting on the surface to support the carton. The sealing plate has a multitude of elevated portions and the mandrel cap has a recess and an angled edge for elevating the raw paperboard edge. The various embodiments of the sealing plate are able to elevate most carton bottom configurations including the standard TETRA REX.RTM. carton and the TETRA REX.RTM. sixth panel with skived edge carton.