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 paper-industry article for making an outer skeleton (3) of a container (2) which also includes an inner layer (9) of thermoplastic material and which has a bottom wall (6), a plurality of lateral walls (5) and an annular perimetric flange (4), the outer skeleton (3) extending at the perimetric flange (4), at the lateral walls (5), at the bottom wall (6), wherein the paper-industry article (1) includes a continuous annular frame (7) intended to constitute the outer skeleton (3) of the container (2) at the perimetric flange (4) of the container (2), and a plurality of wings (10) which extend starting from the continuous annular frame (7), each of the wings (10) being intended to constitute the outer skeleton (3) at one of the lateral walls (5) of the container (2), and at least one of the wings (10) also being intended to constitute the outer skeleton (3) also at the bottom wall (6) of the container (2).

A packing box is provided. The packing box includes a cover, a box body, a connecting plate, and a lining partition. The connecting plate is connected between the cover and the box body through bending, so that the cover is adapted to rotate relative to the box body to open and close. The lining partition is disposed in the box body and is folded to form a main space of a step structure. The step structure is configured to hold an object. A lower surface of the step structure and an inner surface of the box body jointly form an accommodation space for accommodating another object.

Described herein is a food holder including a multiple-panel sleeve that may include a front panel, a rear panel, two front-side panels and two back-side panels that form an irregular shape. The multiple-panel sleeve includes a bottom member connected to bottom edges of the front and rear panels. The irregular, tapered shape of the bottom member promotes the structural integrity of the food holder.

A blank of foldable sheet material is provided. The blank includes a bottom panel, a first bottom side panel and a second opposing bottom side panel extending from opposing side edges of the bottom panel, and a front panel extending from a front edge of the bottom panel. The front panel includes opposing side edges. The blank also includes a first and a second diagonal panel extending from a front edge of the first and second bottom side panels, respectively, and a third and a fourth diagonal panel extending from each side edge of the front panel. The third and fourth diagonal panels have a length greater than a length of the first and second diagonal panels. The blank includes a first and a second corner panel, wherein the first corner panel is hingedly connected to the first and third diagonal panels and the second corner panel is hingedly connected to the second and fourth diagonal panels.

A container forming apparatus for forming a container from a blank includes a blank transfer station including an adhesive assembly having a plurality of adhesive applicators, and a compression station downstream of the blank transfer station, the compression station including a vertically movable mandrel and a forming tool below the mandrel. The forming tool defines a cavity therein and has an inner profile complementary in shape to an outer profile of the mandrel. Hot-melt adhesive is applied to a surface of the blank as the blank is transferred through the adhesive assembly. The blank is positioned beneath the mandrel, and the mandrel drives the blank downward into the cavity of forming tool. Compression plates fold panels of the blank, and the formed container includes a fully formed top flange.

A blank of sheet material for forming a polygonal container, the blank including, a bottom panel, two opposing end panels, each end panel extending from an end edge of the bottom panel, two opposing outer side panels, each outer side panel extending from a side edge of the bottom panel, and an inner side panel extending from each top edge of one outer side panel of the two outer side panels and an outer side panel extending from each top edge of the one of the inner side panels, wherein each inner side panel includes a central portion, a corner portion extending from each side of the central portion, and an inner end portion extending from a side of each of the corner portions.

Described herein is a food holder including a multiple-panel, tapered sleeve that may include a forward panel, a rear panel, two front-side panels and two back-side panels that for an irregular shape. The multiple-panel sleeve includes a multiple-panel bottom member connected to the bottom edges of the forward and rear panels. The bottom member includes a foldline that allows the bottom member to project upwards into a space defined by the panels when the space between the forward and rear panels is reduced. The food holder includes a tear-away portion defined by a line of perforations which may be removed by a consumer to allow access to lower portions of the food product. The irregular, tapered shape and proportionality of the bottom member promote the structural integrity of the food holder.

A container for holding a product such as snack food, wherein the container is transformable from a cylindrical shape to a bowl shape adapted to hold and provide easy access to the product. The container has a pleated sidewall comprising a plurality of longitudinally extending rigid sidewall panels and pleats, with each sidewall panel connected to adjacent pleats by frangible lines extending in the longitudinal direction.

A liquid retaining folded laminar container made from a cold or heat pre-cut paper or plastic sheet. The laminar container comprises engraved lines that enable folding to form a container. The laminar container has a circular base having a double concentric cone. The laminar container's sides close on itself to create a self-bearing square, or geometric, outline container with lids. The container is manually formed from the an engraved laminar sheet. The containers can be stored and transported flat.