The invention relates to a method for top sealing a cardboard tray lined with a plastic foil. The method includes the steps of providing a cardboard tray having a bottom, upstanding walls arranged along the periphery of the bottom and a horizontal flange arranged along the upper edges of the upstanding walls, wherein the inside of the cardboard tray is lined with a plast foil, which plastic foil extends at least onto the horizontal flange; arranging the cardboard tray in a lower sealing tool member having a compressible support edge, wherein at least the horizontal flange is supported by the compressible support edge of the lower sealing tool member; arranging a cover foil over the cardboard tray arranged in the lower sealing tool member to cover the opening of the tray defined by the upper edges of the upstanding walls; and pressing a heated upper sealing tool member onto the lower sealing tool member, wherein the cover foil, the plastic foil liner and the horizontal flange are pressed together to seal the cover foil onto the plastic foil liner along the horizontal flange. The overlapping area of the plastic foil liner, the cover foil, and the compressible support edge extends at least partially outside of the area of the horizontal flange.

A method for forming a heat-reflective blank includes laminating at least one thermal film sheet at a predetermined position on a first linerboard sheet such that a laminated sheet is formed, and feeding the laminated sheet into a corrugating machine. The method further includes coupling the laminated sheet to a corrugated medium sheet and a second linerboard sheet such that a corrugated sheet is formed. The corrugated medium sheet is between the first linerboard sheet and the second linerboard sheet and the thermal film sheet is positioned on an outer surface of the corrugated sheet.

A method for forming a heat-reflective blank includes laminating at least one thermal film sheet at a predetermined position on a first linerboard sheet such that a laminated sheet is formed, and feeding the laminated sheet into a corrugating machine. The method further includes coupling the laminated sheet to a corrugated medium sheet and a second linerboard sheet such that a corrugated sheet is formed. The corrugated medium sheet is between the first linerboard sheet and the second linerboard sheet and the thermal film sheet is positioned on an outer surface of the corrugated sheet.

A package made of a composite material is represented and described, including: a package base with two front base corners and with two rear base corners, a package gable with two front gable corners and with two rear gable corners, and a package base body with a front panel, a first side panel, a second side panel and a rear panel. The package base and the package gable are arranged on opposite sides of the package base body. The composite material has a polymer inner layer, a polymer outer layer and a fibrous support layer, which is arranged between the polymer outer layer and the polymer inner layer. In order to enable the manufacture of packages with even more complex geometries without impairing the rigidity of the package, it is proposed that the package base body has at least one stress-relief panel, which is arranged between the front panel and one of the two side panels.

A container, formed from a container blank, for containing therein a dispensable material of variety of form, has a plurality of panels. A first panel has severance lines that upon application of pressure disengage to create an integral spout for dispensing of the material. Opening and closing of the container is each via easy application of minimal force causing the spout to open or close as needed. The initial opening of the spout severs the severance lines that form the spout. Thereafter the spout may be open or closed upon proper application of pressure around folding lines of the container.

Food tray and food related features that provide a structure having a rounded corner appearance and assembly by mechanical folding are provided, among other features. The tray can have a flap directed adjacent and continuing from a series of triangles formed by fold lines wherein the flap is positioned to have a surface that is flush with the surface of an adjacent sidewall when assembled. A series of tab are positioned above the triangles and when assembled the outer edges of the triangles adjoin the tray sidewalls to close the junctions. A heat and pressure process adheres the adjacent surface. The tray can be made from material is recyclable, compostable and/or biodegradable.

A corrugated paperboard insert for plastic totes includes four side walls and a bottom made from a single sheet of corrugated paperboard. The bottom comprises four interlocking flaps connected along fold lines to respective sidewalls and configured to form an auto-locking bottom that avoids the need for taping. The corrugated paperboard comprises an uncoated linerboard forming an exterior surface of the insert, a coated linerboard forming an interior surface of the insert, a corrugated sheet fixed between the outer linerboard and inner linerboard. The coated linerboard includes a water-based, moisture resistant coating that is food contact rated and recyclable with uncoated paperboard. In some embodiments, point size and/or weight of the inner linerboard is greater than a point size and weight of the outer linerboard.

To obtain a paper container, which allows an upper end portion of a body panel to be reliably dented at the time of unsealing of the paper container so as to be easily unsealed, on the body panel (7), a first auxiliary folding line (43) having a downwardly curved shape is formed to have end portions (41, 42) arranged so as to connect the reference points (40) to each other, or connect together positions that are near the reference points (40) on the body vertical folding lines (3, 4) or positions that are away from the body vertical folding lines (3, 4) and below the reference points (40) in a height direction of each of the body vertical folding lines.

A case for beverage containers comprising a single continuous waterproof surface having walls and a floor and defining a container space, the container space being expandable by the movement of at least one of the walls so as to expand the container space.

A method of erecting a carton from a blank, including: engaging the blank with a punch head against which the carton is formed, folding side portions of the blank against the punch head to form sides of the carton; folding outer portions of the side portions of the blank away from the punch head and against an external side of the carton; folding end portions of the blank against the punch head to form end portions of the carton; folding outer portions of the end portions of the blank away from the punch head and against an external end of the carton; and securing corner gussets formed between the side and end portions against sides or ends of the carton.