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.

The invention refers to a thermal sealing container (1) for transporting a food product, warm or cold, and a relative making process, wherein the container comprises a first tray (2) and a lid (3) for the closing and opening of the first tray (2), wherein the first tray (2) and the lid (3) each comprise an inner wall (4; 11) and an outer wall (5; 12) that is opposing to, and at a predetermined distance from, the respective inner wall (4; 11), wherein the first tray (2) and the lid (3) each have at least one interspace (6; 13) comprised between the respective inner (4; 11) and outer (5; 12) walls, and wherein the first tray (2) and the first lid (3) are made of respective sheets of die cut cardboard.

A method of producing and filling a paperboard packaging container with bulk solids material comprising forming a tubular container body, closing an upper body opening of the tubular container body, filling bulk solids into the container body a bottom body opening of the tubular containing body, closing the bottom body opening, and turning container body such that an upper end is directed upwards in a vertical direction, thereby allowing improved control of the pressure within the packaging container.

A package (20) for displaying items (10) includes a carton body (22) having at least a bottom panel (24) and a front panel (32). A resilient member (50) is configured to urge the items (10) towards the front panel (32) of the carton body (22) and an intermediate member (62) is removably placed at a position between the resilient member (50) and the items (10).

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 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 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.

Method and system for making custom-sized open packaging boxes from cardboard having a width W.sub.CBB and corresponding separate closing lids from cardboard having a width W.sub.CBL, the cardboard being continuously supplied to a system comprising structure for cutting, creasing and folding the cardboard to form custom-sized boxes and corresponding lids such that each box comprises a rectangular bottom panel having four edges, a first and a second rectangular end panel joined via respective crease lines to opposite edges of said bottom panel, a first and a second rectangular side panel joined via respective crease lines to opposite edges of said bottom panel, two first and two second rectangular corner panels, the first corner panels joined via respective crease lines to opposite edges of the first end panel, and the second corner panels joined via respective crease lines to opposite edges of the second end panel, each lid comprises a rectangular top panel having four edges, a first and a second rectangular end panel joined via respective crease lines to opposite edges of said top panel, a first and a second rectangular side panel joined via respective crease lines to opposite edges of said top panel, optionally two first and two second rectangular corner panels, the first corner panels joined via respective crease lines to opposite edges of the first end panel and the second corner panels joined via respective crease lines to opposite edges of the second end panel, said method comprising: a step of obtaining information on the desired minimum inner dimensions length L.sub.D, height H.sub.D and width W.sub.D of a box to be created, a calculating step of calculating the dimensions of the panels of a box and of the panels of a lid on the basis of the desired minimum dimensions taking into account predetermined optimization criteria, and a step of creating the box and the lid, wherein said calculating step comprises allowing the inner height of the side panels of the box to be smaller than the desired inner height of the box if (W.sub.D+2 T.sub.CBB+2H.sub.D)>(W.sub.CBB−M.sub.B), wherein MB denotes an optional minimum margin that is cut off at the sides of the cardboard supplied and wherein T.sub.CBB denotes a material dependent correction factor generally corresponding to the thickness of the cardboard used for the box, and/or if 2H.sub.D>L.sub.D and choosing the inner height of the side panels of the lid template so that the inner height of the side panels of the box plus the inner height of the side panels of the lid equals at least the desired height.

A 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 to establish fluid communication between an interior of the container and the environment outside the container. The at least one vent channel is operable to vent excess gas pressure from the interior of the container.

A cardboard box assembly device, that folds four flaps provided at edges of an opening in a cardboard box to surround the opening, is disclosed. The cardboard box assembly device includes a folding unit, a pushing unit, and a drive unit. The folding unit folds each of the four flaps in a prescribed sequence and closes the opening. The pushing unit pushes one of the four flaps, that is folded last, inward into the cardboard box as a locking flap, and overlaps the locking flap onto the other flaps. The drive unit contacts the cardboard box and imparts a prescribed displacement to the cardboard box. Parts that engage with one another are formed between the locking flap and at least one of the other flaps. The drive unit moves the locking flap relative to the other flaps due to the displacement when the pushing unit pushes the locking flap.