The present invention relates to material packaging made of corrugated cardboard sheet having a polygonal cross section, comprising lateral walls, a lower plane forming the bottom of the packaging, and an opposite upper plane. It comprises at least one portion (25, 26) projecting with respect to the upper plane. The bottom (30) comprises at least one surface portion (15, 16) that is cut out over a portion of the thickness of the cardboard sheet, is compressed and in the form of a non-through hollow, referred to as a hollow portion, the shape of which matches the projecting portion, in line with the latter and arranged to fit together with the projecting portion of the packaging below.

Convertible trays are disclosed with features that facilitate preparation, transportation, and presentation of food items. An example convertible tray includes a substrate defining apertures, where each aperture is for holding a food item. The convertible tray also includes a first separation feature (e.g., at least one perforation) defined by the folded substrate on a first side of the convertible tray adjacent to at least one aperture of the apertures. The convertible tray further includes flaps that are foldable to support the first side of the convertible tray above a support surface. The folded substrate can be divided at the at least one perforation, to remove an individual tray that includes the at least one aperture adjacent to the perforation. The individual tray can be inserted into a serving container while holding the food item.

A paperboard carton is formed by interconnecting a main body piece, folded to establish at least a bottom wall and first and second spaced side panels, with separately formed third and fourth side panels. To strengthen the carton and enable similarly configured cartons to be effectively, vertically stacked, a caliper or basis weight of each of the third and fourth side panels is made greater than the main body piece and/or an orientation of the fibers between the pieces is varied as compared to a conventional carton.

A packaging kit is composed of a sheet member. A target object to be packaged is to be placed on the sheet member. The sheet member includes a placement surface, a standing side, and a tongue piece. The placement surface allows the target object to be placed thereon. The standing side is elongated from the placement surface. The standing side is raised relative to the placement surface. The tongue piece includes a protrusion edge. The placement surface and the standing side are provided with the tongue piece. The tongue piece is located on a side of at least one side edge of the standing side.

A container formed from a blank of sheet material includes a bottom wall, first and second end walls, and first and second side walls. The first and second end walls each include, in series, an end wall panel, a ledge panel that extends inwardly from an upper edge of the end wall, an angled support panel that extends diagonally toward the end wall panel, and an anchor panel in facing contact with the end wall panel. The ledge panel, angled support panel, and end wall panel form a triangular cross-section. The side walls each include first and second wrap-around flaps that extend from respective end edges of the side walls and at least partly around a corresponding one of the container's first and second end walls.

A container for holding a food product. The container can comprise a flange comprising a central panel. An opening can extend in the central panel. The container further can comprise a sidewall comprising at least a panel foldably connected to the central panel and a denesting feature extending outwardly from the sidewall. The denesting feature can be for engaging a nested container positioned below the container in a stacked arrangement and for forming a denesting gap between the flange and the nested container.

A container for holding a food product. The container can comprise a base layer and a liner at least partially attached to an inner surface of the base layer, a flange comprising a central panel of the base layer, an opening extending in the central panel, and a sidewall comprising at least a panel foldably connected to the central panel along the opening.

The invention is directed to a stackable container having a gable type top wall and a gable type bottom wall. The top wall of the container can include an upwardly extending tab that cooperates with a slot in the bottom wall of a like container to facilitate stacking of two or more containers. The container includes a front opening.

An interlocking container formed from one piece of material, comprising, a base panel having a first, second, third, and forth edge; a first side foldably connected along a first edge to the first edge of the base panel, a second side foldably connected along a first edge to the second edge of the base panel, a third side is foldably connected along a first edge to the third edge of the base panel, a fourth side is foldably connected along the a edge to the fourth edge of the base panel, wherein when folded a container with interlocking tabs is formed.

A foldable container moveable between a flat configuration and a three-dimensional configuration is provided. The container includes a first panel having a first engagement feature, a second panel having a second engagement feature, and a third panel having a third engagement feature. The first engagement feature is configured to engage with the second engagement feature so as to secure the container in the three-dimensional configuration. The first engagement feature is also configured to engage with the third engagement feature so as to inhibit the first engagement feature from becoming disengaged from the second engagement feature.