A paper lid that is mainly made of paper includes a top plate portion extending in a first direction, an inner fitting portion extending in a second direction and being continuous with the top plate portion, a peak portion extending in a third direction and being continuous with the inner fitting portion, an outer fitting portion extending in a fourth direction, facing the inner fitting portion at a distance, and being continuous with the peak portion, and a flange portion extending in a fifth direction, being continuous with the outer fitting portion, and including an end of the paper lid.

A method is disclosed for forming a covered cardboard container from a single template. The template is configured such that, when side panels are lifted off the top face of the template, a front panel and rear panel are lifted together with the side panels. The container is formed when the two side panels, the front panel and the rear panel are all in a substantially vertical position.

After the container is formed it is filled with product, such as apples, pears, avocados, and the like. The container has two top panels that are folded over the product and adhered to one another to form a lid. Score lines in the top panel allow the container to accommodate products of varying size.

A method for producing a bowl formed by a tray closed by a sealing film involves preparing a blank where a first and a second couples of crease lines delimit a bottom panel, two first and two second side walls, each first side wall provided of an internal flap and an external flap delimited by respective third and fourth crease lines, each second side wall provided of an internal flap and an external flap delimited by respective fifth and sixth crease lines, erecting the blank into a tray, folding the internal and external flaps of each first side wall about the respective third crease line and the internal and external flaps of each second side wall about the respective fifth crease line, applying adhesive on the internal and/or external flaps of each first and second side walls, folding the external flap of each first side wall about the respective fourth crease line and the external flap of each second side wall about the respective sixth crease line, forming a rim, applying adhesive on gaps between abutting ends of rims of adjacent first and second side walls, and attaching the sealing film on the rims.

A method and apparatus are shown for securing a top for a cardboard carton where the carton has a bottom wall and integral sidewalls, an initially open interior and initially open top flaps with outwardly extending ears. The top flaps are folded to a carton closing position which closes off the initially open interior of the cardboard carton. The ears are also folded to a position in contact with the sidewalls of the carton. A set of punches are aligned with the folded ears of the carton and are actuated to force a first layer of cardboard from a respective top flap through an underlying region of the carton sidewall. A set of platens are located so as to underlie and reinforce the sidewalls of the carton as the punching operation takes place.

A method for producing a paper lid includes a first step of holding down an outer edge area of a blank that is mainly made of paper, a second step of forming an inner fitting portion in a central area of the blank, while holding down the outer edge area, and a third step of forming an outer fitting portion in the central area, where the inner fitting portion is formed, while holding down the outer edge area.

A plurality of camming surfaces (116) are actuated to move against the top portion of the side walls (38) of a container (36) to turn such top portion in an outward direction relative to the interior of the container sufficiently to enable the seal profile (90) of the top tool assembly (30) of a sealing apparatus (22) to press the outwardly disposed side wall top portions downwardly against an abutment formed by a bottom tool assembly (32) so as to create a horizontal, outwardly disposed sealing flange (40) to which a top film (34) is applied for closure of the container.

A method for automatically closing an open packaging box with a cardboard lid, said box comprising a polygonal bottom panel defined by three or more bottom panel edges and sidewalls joined over respective crease lines to said bottom panel edges, each sidewall forming a substantially right angle with the bottom panel, said lid comprising a polygonal top panel defined by three or more top panel edges and corresponding to the bottom panel of the box to be closed and flaps joined over respective crease lines to said top panel edges and adapted for being folded onto a corresponding one of said sidewalls, the method comprising a step of folding each flap along the respective crease line partially towards a position, in which the flap forms a substantially right angle with said top panel and placing the lid above said box such that the top panel and the bottom panel are substantially aligned and such that, seen onto each sidewall, each flap overlaps one of the sidewalls, a step of releasing the lid allowing it to be guided by the partially folded flaps into a position on the box, in which the top panel and the bottom panel are aligned, and a step of folding each flap onto the respective sidewall fully into said position, in which the flap forms a substantially right angle with the top panel.

A method of forming a paperboard packaging container from a rectangular body blank is disclosed, the method including the following steps: a) providing a rectangular body blank made from a laminate sheet material; b) forming a tubular container body from the rectangular body blank, the container body having a first end with a first body opening and a second end with a second body opening; c) sealing together the first and the second side edge in a but-to-but seal using a sealing strip having a sealing strip width; d) presenting the tubular container body to a crease line forming station; e) closing the second body opening by pressing a paperboard disc into the second body opening; f) forming a curled second edge by folding or rolling the second end of the container body wall inwardly; g) filling the packaging container with bulk solids; and h) closing the first body opening.

A stackable packaging unit comprises a molded tray including one or more compartments and a female feature. Additionally, the stackable packaging unit includes a cover attached to the molded tray and configured to cover at least a portion of at least one of the compartment(s) of the molded tray. The cover is made of folded paperboard or cardboard and includes a handle extending upward. The handle of the cover provides a male feature that is configured to fit within the female feature of a further one of the stackable packaging units that's stacked above the stackable packaging unit. The molded tray can be made of molded pulp, in which case the molded tray and the paperboard or cardboard from which the cover is made can both be recyclable. The molded tray and the paperboard or cardboard from which the cover is made can additionally or alternatively include postconsumer recycled material.

A substantially paper-based composite container for an off-gassing product includes a paperboard can body having a substantially gas-impervious liner attached to an inner surface thereof, and a pair of substantially paper-based end closures attached to the opposite ends of the can body, each end closure defining a generally cylindrical sealing panel in contact with an inner surface of the can body. Heat-sealable materials are disposed on opposing surfaces of the sealing panel and can body. The sealing panels of the end closures are attached to the can body by heat seals. The heat seal for at least one of the end closures is discontinuous such that at least one vent channel extends through the heat seal so as to establish fluid communication between an interior of the composite container and the environment outside the composite container. The at least one vent channel is operable to vent excess gas pressure from the interior of the container.