Blanks for forming clamshell containers and the resulting clamshell containers are described. The clamshell containers include a tray and a lid that are hingedly connected together. The tray is liquid tight, and typically includes gussets on each corner to prevent leakage. The lid and tray can be locked via at least one locking mechanism, optionally two different locking mechanisms. A first locking mechanism involves a front panel on the tray, with an extension portion that terminates in a hook or tab. The extension portion can fold over the front panel of the lid, and the hook or tabs slide into a slit(s) on the top of the lid. An optional second locking mechanism involves lid detents and tray detents. In some embodiments, in the locked position, the lid detents are underneath the tray detents and the tray detents retain the lid detents in place until a force is applied.

A container for foodstuffs includes a containment body having a polygonal bottom wall and perimeter side walls connected to each other and to the polygonal bottom wall so as to define a food containment volume open at the top at an upper opening. At least two side flaps and one upper flap extend from each perimeter side wall. Each side flap is connected to the respective side wall through a respective side folding line and abuts against and is bonded to a respective adjacent side flap, defining a supporting element outside the containment volume. Each upper flap is connected to the respective side wall through a respective first upper folding line along which it is folded away from the containment volume so as to define an edge portion of the container suitable to receive a closure element.

A blank can include a main panel and a locking tab extending from and separable from the main panel and including a first tab subpanel, a second tab subpanel, and a third tab subpanel; the first tab subpanel extending from the main panel, the second tab subpanel extending from the first tab subpanel and joined to the first tab subpanel at a first bend line, and the third tab subpanel extending from the second tab subpanel and joined to the second tab subpanel at a second bend line.

A carton. The carton may include a floor panel; a plurality of side panels extending about a periphery of the floor panel, a front tab formed at an upper edge of a front side panel, upper side flaps extending from upper edges of a first end side panel and a second end side panel, and wherein each flap includes a side receiving slot; foldable corner gussets extending between adjacent side panels, wherein the floor panel, side panels, and foldable corner gussets are configurable to form a compartment region; a hingeable lid, including: a lid panel, a front edge flap, a side tab formed on each opposing side edge of the lid panel, and a front receiving slot formed in the front edge flap, wherein the lid panel is configured to cover the compartment region when in a closed position; and wherein the front tab of the front side panel is configured such that when the hingeable lid is in the closed position, the front tab aligns with the front receiving slot and is receivable therein and each side tab aligns with its respective side receiving slot and are receivable therein.

A box can include a first side panel; a second side panel positioned perpendicular to the first side panel; a top panel joined to the first side panel; and a handle assembly, the handle assembly including a handle portion attached the top panel, the handle portion including a tab at a side end of the handle portion, and a locking panel attached to the second side panel, the locking panel defining a cut pattern, the cut pattern defining a space therewithin, the cut pattern defining a top edge and an inner flap, the top edge of the cut pattern being a fold line formed by folding the inner flap up above the top edge; and wherein the tab is received by the space.

A leak proof container and a method of forming the container from a blank. The blank includes a bottom panel, first and second side panels connected to the bottom panel at opposing lateral edges, and first and second end portions located at opposing longitudinal ends of the blank. Each end portion includes an inner end panel connected to the bottom panel, an outer end panel connected to the inner end panel, and first and second corner panels forming gussets connected to a respective one of the first and second side panels and connected to the inner end panel. An adhesive area is located on one side of the blank and comprises at least a portion on each of the outer end panel and the inner end panel. The adhesive area adheres the gussets to the inner end panel and to the outer end panel.

A method comprising obtaining a box comprising a box top defining a locking tab separable from the box top and comprising first, second, and third tab subpanels; the locking tab and the first tab subpanel thereof extending from at least one of a first main panel and a first end panel of the box, the second tab subpanel extending from and joined to the first tab subpanel, and the third tab subpanel extending from and joined to the second tab subpanel; and a box bottom comprising a second main panel; a second end panel joined thereto; and a tab connected to the second main panel and defining a locking opening; bending the third tab subpanel with respect to the second tab subpanel; inserting the locking tab into a gap defined at least in part by the second end panel; and engaging the locking tab with the locking opening.

A tray for holding at least one food product includes a plurality of panels extending at least partially around an interior of the tray, the plurality of panels including a bottom panel, a front panel, a back panel, and at least one side panel, a plurality of end flaps foldably connected to a respective panel of the plurality of panels and cooperating to form a rim extending outwardly from the plurality of panels, and locking features comprising at least one male locking feature extending from at least one end flap of the plurality of end flaps, the at least one male locking feature at least partially inserted through at least one female locking feature in a respective panel of the plurality of panels to reinforce the rim.

A method of forming a tray for holding at least one food product includes obtaining a blank having a plurality of panels including a bottom panel, a front panel, a back panel, and at least one side panel, a plurality of end flaps foldably connected to a respective panel of the plurality of panels, and reinforcement features. The method further includes folding the plurality of panels at least partially around an interior of the tray, folding the plurality of top end flaps to form a rim extending from the plurality of panels when the tray is formed from the blank, and activating the reinforcement features to maintaining an integrity of the rim such that at least one end flap of the plurality of end flaps is biased downward to maintain an outward arrangement from a respective panel of the plurality of panels.

A method of folding a blank assembly, the method including folding a first side panel about a first fold line relative to a bottom panel until the first side panel is substantially perpendicular to the bottom panel, a cardboard blank of the blank assembly including the first side panel, the bottom panel, and a second side panel; and folding the second side panel about a second fold line relative to the bottom panel until the second side panel is substantially perpendicular to the bottom panel, the first side panel, the second side panel, and the bottom panel at least partially defining an inner cavity, an insulation batt of the blank assembly attached to at least one of the first side panel and the second side panel, the insulation batt at least partially insulating the inner cavity.