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 production line (1) for making a covered box (8) comprises: a forming machine (2), configured to receive a cardboard box blank (6) and to fold it to form the box and including a plurality of folders (21) and a movement system configured to receive the box blank (6) oriented horizontally, and comprising a plurality of columns (23), extending along the vertical direction (V) and configured to abut against the base (6a) of the box blank (6) and to move it along a vertical direction (V); a gluing unit (3), configured to receive a covering blank (7) and to spread glue on the covering blank (7); a positioning device (4), configured to position the box on the covering blank (7); a covering machine (5), configured receive the box coupled to the respective covering blank (7) from the positioning device (4) and to fold the covering blank (7) into contact with the box in such a way as to cover the box.

A container is formed from a blank that has a first side and a second side. The first side can have one or more graphics. The container can include a base portion forming an enclosure and first and second overlap panels that collectively form a cover panel that can enclose the enclosure. Methods of constructing the container include forming the cover panel by securing the first and second overlap panels together.

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 frame is injection molded onto a group of panels to form a container. The panels extend at least partially around, and at least partially define, a cavity of the container.

A frame is injection molded onto a group of panels to form a container. The panels extend at least partially around, and at least partially define, a cavity of the container.

A packaging for modified atmosphere packaging includes a flangeless cardboard tray having a bottom and an upstanding peripheral wall. A plastic flange is arranged on top of the edge of the peripheral wall. The plastic flange has in cross-section a first part extending horizontally, substantially parallel to the bottom of the tray, a second part depending from the first part downward along the outside of the peripheral wall and a third part depending from the first part, opposite of the second part, along the inside of the peripheral wall. A plastic barrier foil is adhered to and lines the inside of the cardboard tray and extends over the plastic flange to fix the plastic flange onto the flangeless cardboard tray.

A packaging system comprising a trough and a packaging element separate therefrom for closing the trough, the packaging trough having an outer cardboard structure folded or formed from corrugated board with an insert of a single or multiple layer plastic film, the inner side of each side wall of the cardboard structure being connected by material means to the insert only in its upper part of the side wall, the insert forming a substantially identically shaped, but loose contact surface with the lower part of the inner side of each side wall down to the base of the packaging trough and the trough having at least one gas venting opening.

A method for producing packaging comprises providing the shell part that defines an opening, a cavity at least partially formed by a bottom wall and side walls, and a continuously circumferential lower contact surface at a constant height around the opening of the cavity and providing a collar including the circumferential edge flange. At least one bottom tool is structured to comprise aa lower contact surface and a cavity configured to receive the shell part. At least one top tool is structured to comprise an upper contact surface. The shell part is inserted into the cavity of the at least one bottom tool and the collar is placed on the lower contact surface. A barrier film is placed over the edge flange and pressed to form a tray that is filled with goods. A sealing film is then pressed against the barrier film to seal the goods within the tray.

A machine for forming and printing cardboard boxes, each box including a bottom wall, two pairs of side walls and a closing wall, the machine includes supply means for supplying a continuous web of cardboard, first cutting means for cutting the continuous web, that are adapted to form an elongate element with upper and lower surfaces, second cutting and creasing means for forming, in the elongate element, a first panel configured to define the first pair of side walls, the bottom wall and the closing wall, and second and third separate panels configured to define the second pair of side walls of the box. The machine also includes printing means interposed between the first cutting means and the second cutting and creasing means. The printing means have at least one lower and upper printing unit, adapted to print on the lower and upper surfaces of the elongate element respectively.