Abstract: A flap folding unit (90) for folding flaps of lids of boxes, comprising a hinged guiding element (94) adapted for contacting a flap to be folded upon relative movement of the guiding element and the flap and guiding the flap towards its intended final position and an extendable pusher (96) adapted for pushing the flap into its intended final position.

Abstract: In a box assembly device, a holding mechanism causes one of bottom boards to contact a first jig and folds the bottom board inside, while the holding mechanism holding the box material in a state where the box material is developed in a cylindrical shape from a folded state. The folding mechanism folds the bottom flap inside so as to overlap with one of the bottom boards. The holding mechanism causes the other bottom board to contact the second jig while holding the box material and folds the other bottom board inside and upwardly so as to overlap with the bottom flap to engage the bottom boards with each other.

Abstract: Disclosed is a corrugated paperboard box making machine 1 in which a slotter device 6 comprises: a first slotter unit 61 comprising a first slotter 610, a first stationary blade 612 and a first displaceable blade 613; and a second slotter unit 62 comprising a second slotter 620, a second stationary blade 622 and a second displaceable blade 623. A control device 100 is operable to switch the slotter device 6 between a first production mode and a second production mode. Specifically, the control device 100 is operable, when implementing the second production mode, to acquire and store a total blade length of the first stationary blade 612 and the first displaceable blade 613 and a total blade length of the second stationary blade 622 and the second displaceable blade 623, and perform positioning control for the slotter blades, based on the stored total blade lengths.

Abstract: A packaging element for accommodating at least one product. The packaging element may include a blank which has the following portions connected to one another by folding lines: an accommodating portion having at least one receptacle, the shape of which is matched to the shape of a product to be accommodated; a first side-wall portion; a first cover-wall portion; a second side-wall portion; and a second cover-wall portion. The first cover-wall portion may have at least one hollow, and the second cover-wall portion may have at least one protrusion with a shape and position complementary to the hollow.

Abstract: 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.

Abstract: A carton for carrying a plurality of articles. The carton can comprise a plurality of panels at least partially extending around an interior of the carton. The plurality of panels can comprise a top panel, at least one side panel, and at least one bottom panel. At least one retention tab can be foldably connected to the at least one bottom panel. The at least one retention tab can be for engaging at least a portion of an article of the plurality of articles. At least one corner flap can be foldably connected to the at least one side panel. Each of the at least one retention tab and the at least one corner flap can be disposed adjacent to at least one corner opening in the carton.

Abstract: A blank of sheet material for forming a polygonal container is provided. The blank includes two end panels, two side panels, and four corner panels connected in series along a plurality of fold lines. The blank further includes a plurality of bottom panels each extending from one panel of the end panels and the side panels. The plurality of bottom panels is configured to define a locking slot and a locking tab that is insertable into the locking slot to form a bottom wall of the container.

Abstract: The present package is formed from a bag construct that entirely surrounds a blank construct and that can be folded from a flat configuration to a carton configuration. The blank construct has five sides, including four sides and a bottom side, and an open top. The bag construct surrounds all four sides, the bottom, and the open top. The package includes a dispensing flap that provides access to contents, and the dispensing flap can be hinged about a hinge line or that can be removed entirely from the package. Any variance in density of product in the package can be accommodated by the stiff, yet flexible, sides of the package.

Abstract: There is provided packaging (1), and blanks for forming said packaging, which comprises an inner packet part (150) and an outer packet part (100). The inner packet part is movable relative to the outer packet part. Movement of the inner packet part (150) is limited by a flexible linking element (170) which extends between the inner packet part (150) and the outer packet part (100).

Abstract: A system is claimed for forming a container from a tubular blank comprising a plurality of panels and flaps interconnected to provide a generally flattened tubular configuration. A first and second panels are provided with the second panel being rotatable relative to the first panel. The system may comprise a first engagement device for engaging the first panel and a second engagement device for engaging the second panel, and being located on a panel rotating apparatus operable to rotate the second panel from an orientation generally parallel to the first panel to a second orientation at an angle to the first panel. The generally flattened tubular blank may be reconfigured from a generally flattened configuration to an open configuration.

Abstract: A system for transferring tubular blanks to a packing machine includes an apparatus intermittently positioned in a zone (Z) situated in front of the line with an open tubular blank (150) hooked to a retainer (22). The apparatus includes a rotating member (510), activated in phase with the line movement, arranged between longitudinal walls (490), and having a series of transfer devices (525), angularly equidistanced along a circumference tangential to an upper line branch. The transfer devices have dynamic seating (460) for encountering in zone (Z), a tubular blank flap (1C). The tubular blank is freely inserted in the dynamic seating (460), and subsequently by hooking the seating, the transfer means are deactivated in proximity to the upper branch (470) in phase with the arranging of segments from radial to vertical first delimiting the dynamic seating (460) and a compartment (450) corresponding to the dynamic seating.

Abstract: Collapsible reusable carrying cases are provided in sizes varying from small food containers to large push cart bins on casters. The cases are assembled or disassembled from a joined flat space-saving configuration to a functioning case and vice-versa. All parts that make up a carrying case do not separate from the carrying case and no parts can be removed. The cases are formed from rigid plastic panels, and are assembled or disassembled without tools. The sides of the cases are erected progressively by hand by interlocking elements at the corners. The panels also disassemble progressively by being manually pulled apart. When folded into a flat storage or shipping configuration, the panels stay together, resisting unfolding by virtue of snaps which are either molded into the panels or bonded to them. The carrying cases are resistant to water, dirt, bacteria, molds, allergens, and inclement weather.

Abstract: Collapsible reusable carrying cases are provided in sizes varying from small food containers to large push cart bins on casters. The cases are assembled or disassembled from a joined flat space-saving configuration to a functioning case and vice-versa. All parts that make up a carrying case do not separate from the carrying case and no parts can be removed. The cases are formed from rigid plastic panels, and are assembled or disassembled without tools. The sides of the cases are erected progressively by hand by interlocking elements at the corners. The panels also disassemble progressively by being manually pulled apart. When folded into a flat storage or shipping configuration, the panels stay together, resisting unfolding by virtue of snaps which are either molded into the panels or bonded to them. The carrying cases are resistant to water, dirt, bacteria, molds, allergens, and inclement weather.

Abstract: A carton for containing a plurality of articles. The carton comprises a top panel, a first side panel, a second side panel, and a bottom panel. End flaps can be respectively foldably connected to respective panels and at least partially overlapped with respect to one another to thereby at least partially form a closed end of the carton. A dispenser panel can be at least partially defined by a dispenser tear line extending in at least the top panel and at least one of the end flaps. An opening section can be at least partially defined by the dispenser tear line and can be foldably connected to one of the first side panel and the second side panel. The dispenser panel is at least partially removable from the carton to create a dispenser opening, and the opening section is positionable relative the first side panel to expand the dispenser opening.

Abstract: A blank of sheet material for forming a polygonal container includes a bottom panel, two opposing side panels each extending from a side edge of the bottom panel, and two opposing end panels each extending from an end edge of the bottom panel. The blank also includes a foldover panel that is configured to lock the container in at least a partially formed position. The blank further includes a reinforcing panel assembly that includes an outer reinforcing corner panel extending from the first side panel, an outer reinforcing end panel extending from the outer reinforcing corner panel, an inner reinforcing end panel extending from the outer reinforcing end panel, an inner reinforcing corner panel extending from the inner reinforcing end panel, and an inner reinforcing side panel extending from the inner reinforcing corner panel.

Abstract: A tool holder includes a foldable plastic sheet being folded and configured to include a hanging end and a holding end. The hanging end and the holding end integrally form a one piece structure. The holding end having a first edge, a second edge, a first lateral edge, and a second lateral edge, with the first and second edges and the first and second lateral edges delimiting a circumferential periphery of a receiving space in which the first and second edges are opposite each other and the first and second lateral edges are opposite each other and respectively extend from two lateral sides of the first edge to two lateral sides of the second edge. A joint edge is distal the first lateral edge extending therefrom and adhered to the second lateral edge.

Abstract: The invention relates to a (cigarette) package consisting of an outer package (10) and two inner packages (11, 12). The latter can be moved by a pivoting movement about a respective articulation joint in the region of an outer base wall (40) out of the closed position (upright within the outer package (10)) into an oblique open position. To this end a covering tab (28) which closes off the cup-shaped inner package (11, 12) on the upper face is automatically moved out of the closed position, such that the oblique inner package (11, 12) is ready for the removal of the contents of the packaging.

Abstract: In one aspect, the disclosure is generally directed to a carton for holding at least one product. The carton includes a plurality of panels that extends at least partially around the interior of the carton. The plurality of panels includes a front panel, a top panel, and a lid panel foldably connected to the top panel. The carton includes a lid pivotably attached to the carton. The lid includes the lid panel and the top panel and is moveable between a closed position wherein the lid panels is positioned in face-to-face contact with the front panel and an open position allowing access to the interior of the carton. The carton includes locking features for releasably attaching the reclosable lid in the closed position. The locking features include at least one male locking portion in the front panel and at least one female locking portion in the lid panel.

Abstract: The invention relates to a container. In particular the invention relates to a container for receiving a food product which container is formed from a folded blank. The body of the container is formed from panels of the container blank and at least one flange section is provided at an edge of an opening of the container body. The flange section comprises two overlapping flange panels of the container blank, which are bonded together to maintain the shape of the container body.

Abstract: A container including one or more labeling devices that can be detached from the container. Preferably the container can hold a plurality of different articles and includes a plurality of labeling devices for identifying the different articles. After the articles are removed from the container, the articles may be identified by the labeling devices by detaching the labeling devices and attaching or placing the labeling device on or near its corresponding article. Preferred labeling devices include one or more labeling areas that provide information regarding an article.

Abstract: A package assembly suitable for use in storing and shipping a plurality of product containers includes a shipping configuration and a display configuration. In the shipping configuration the package assembly is constructed from a single blank of packaging material and formed into a case into which a plurality of product containers are inserted. In the display configuration a top portion of the case is removed from a bottom portion of the case along one or more tear lines on the blank.

Abstract: A carton for containing a cooked food product. The carton comprises a plurality of panels that extend at least partially around an interior of the carton. The plurality of panels can comprise a bottom panel, a first side panel, and a second side panel. A lid is positionable to at least partially close a top of the carton. A plurality of vent features are in at least one panel of the plurality of panels for at least partially maintaining product attributes of the cooked food product contained in the carton by at least partially venting the carton.

Abstract: A packing method and unit for folding a blank on a packing machine; a first suction pickup head engages a first panel of the blank inside a store; a second suction pickup head engages a second panel of the blank inside the store; the pickup heads are moved from a withdrawal position at the store to a release position at a packing conveyor, insert the blank inside a pocket on the packing conveyor; and the blank, folded into a ‘U’, is released inside the pocket on the packing conveyor; as the pickup heads are moved from the withdrawal position to the release position, a relative movement between the first pickup head and the second pickup head is produced to fold the blank into a ‘U’ before the blank is inserted into the pocket on the packing conveyor.

Abstract: An apparatus for making a film bag with reinforced bag seams includes a film extruder that produces a continuous tube of film. A flattener produces a continuous web of flattened film which has an upper surface and a lower surface. A fold maker has a receiving portion positioned above the web and a displacing portion is positioned below the web that moves cyclically upward to a first position to locate a portion of the web into the receiving portion, thereby forming a fold. A fold retention device prevents the fold from opening. A presser flattens the fold against the web. A sealer seals through the fold, forming a reinforced bag seam. A cutter severs a sealed portion from an unsealed portion of the web. A transport mechanism moves the film from the extruder, through the flattener, into the fold maker, beneath the presser, into the sealer and to the cutter.

Abstract: A vessel composed of a sheet of flexible material, cut, rolled, and affixed to form a frusto-conically shaped base region. The sheet when rolled including an upper region having two opposing flaps, each flap delineated from a remaining portion of the sheet by a path along which the sheet is scored, so that the flaps, when folded along their respective paths, define a single elevated drinking portion having a spout formed between an extension of the base region and at least one of the two flaps.

Abstract: A packaging tray configured for assembly without staples or other fasteners is provided.

Abstract: A blank of sheet material for forming a polygonal container is provided. The blank includes two end panels, two side panels, and four corner panels connected in series along a plurality of fold lines. The blank further includes a plurality of bottom panels each extending from one panel of the end panels and the side panels. The plurality of bottom panels is configured to define a locking slot and a locking tab that is insertable into the locking slot to form a bottom wall of the container.

Abstract: A method for manufacturing a flexible container including a body, a base including an emptying spout and a cover including a filling spout, includes: cutting, from a sheet of flexible material, four main panels of the body and the base and four cover panels, each main panel having a square or rectangular shape having four sides, the bottom side being extended by an approximately trapezoidal extension, whose end towards the bottom is extended by a tab, the extension and tab forming the base and emptying spout, each cover panel having a substantially trapezoidal shape with a base towards the bottom and whose end towards the top is extended by a tongue forming the filling spout; forming a fold in each main panel along the top side; fixing the fold to form at least one loop per main panel; assembling and securing together the four main panels and four cover panels.

Abstract: A foldable box template includes first, second, third, fourth, and fifth segments. Each of the segments has a length, a width, and one or more flaps. The first segment is positioned at a first end of the template and the fifth segment is positioned at a second, opposing end of the template. The sum of the lengths of the first segment and the fifth segment is generally equal to the length of the third segment. As a result, the first and fifth segments form a seam on a sidewall of a box formed from the box template. In some cases, the seam formed by the first and fifth segments is offset from seams formed in top and bottom surfaces of the box. The seam formed by the first and fifth segments is offset from a corner of the box.

Abstract: A blank of sheet material for forming a polygonal container is provided. The blank includes a bottom panel, two opposing side panels, and two opposing end panels. Each side panel extends from a side edge of the bottom panel, and each end panel extends from an end edge of the bottom panel. Each end panel includes at least one major stacking extension extending from a top edge thereof. The blank further includes a reinforcing panel assembly extending from a first side edge of a first end panel of the two end panels. The reinforcing panel assembly includes an inner end panel having a minor stacking extension extending from a top edge thereof. The minor stacking extension is configured to align with a respective major stacking extension to form a stacking tab.

Abstract: A folding unit for producing packages of pourable food products from sealed packs having main portion and opposite end portions; each pack comprising, for each end portion, a fin and a pair of flaps projecting laterally from main portion; unit comprises: a conveyor fed with a plurality of packs and which feeds the pack along a forming path; and a folder interacting with each pack to fold relative end fin onto a relative end portion; conveyor comprises first and second links articulated to each other; second link is arranged downstream of first link, relative to a first advancing direction of conveyor; folder comprises: a slot defined by first link to receive end fin; and a slide operatively connected to second link and movable between a first position at least partially engaging slot, to fold end fin onto a relative end portion, and a second position detached from slot.

Abstract: A reconfigurable golf ball container includes a sleeve that is formed from a paperboard material and that defines an interior volume configured to hold a plurality of golf balls. The sleeve includes a perforated line disposed between a tool portion of the sleeve and a remainder of the sleeve. The tool portion of the sleeve is configured to be separated from the remainder of the sleeve along the perforated line to form a golf tool. The golf tool includes a first end configured to be inserted into a soil media, and includes a second end that is capable of supporting a golf ball more than 2.0 cm away from a surface of the soil media.

Abstract: A container with a window through which food within the container may be seen. The window may include a hole in a base material of the container, and at least one substantially clear polymeric film that is mounted to a portion of the container and obstructs (e.g., covers) the hole. Microwave energy interactive material (“MEIM”) may be mounted to the polymeric film for influencing the effect of microwave energy on the food within the container. Typically (e.g., optionally), the film extends beyond the hole, and the MEIM may be segregated to portions of the film that do not obstruct the hole, so that the MEIM does not interfere with the view through the window.

Abstract: A carton for containing a plurality of articles. The carton can comprise a plurality of panels that extends at least partially around an interior of the carton. The plurality of panels can comprise a bottom panel, a top panel, and a side panel. At least two end flaps are respectively foldably attached to respective panels of the plurality of panels. The at least two end flaps can at least partially form a closed end of the carton, and the at least two end flaps can comprise a first end flap foldably connected to at least one panel of the plurality of panels at a first fold line and a second end flap foldably connected to the at least one panel at a second fold line. The second fold line is oblique relative to the first fold line.

Abstract: A food holder for retaining a food product is provided. The food holder is formed from a continuous blank of the sheet material. The food holder includes a top tray including a center panel, a side panel, and an end panel coupled together along a plurality of fold lines. The food holder further includes a bottom tray including a center panel, a side panel, and an end panel coupled together along a plurality of fold lines. The bottom tray is rotatably coupled to the top tray along a hinge line. The top tray is rotatable relative to the bottom tray from an open position to a closed position. The food holder further includes a moveable section including a portion of at lest one of the top tray side panel and the bottom tray side panel. The moveable section facilitates movement of the top tray relative to the bottom tray for retaining the food product.

Abstract: A carton includes a top portion and a bottom portion. Each portion includes a front wall, a rear wall, and opposing side walls extending therebetween. The top portion and bottom portion include respective top and bottom surfaces. The rear walls of the top and bottom portions are hingedly connected to another along respective outer edges. When closed, the top portion and bottom portion define a cavity for storing an item. The carton also includes a separation region defined on the top and bottom portions that extends from an outside edge of the front wall of the top portion, around the top portion and the bottom portion, to an outside edge of the front wall of the bottom portion. The separation region is configured to facilitate controlled separation of the carton into first and second side portions and to prevent liquid flow through separation region.

Abstract: A print job includes a container page, product pages, and a stacking pattern. Methods and systems automatically pattern a first material according to a container pattern specified by the container page to output a flat and patterned container sheet to a stacking location, and automatically fold the flat and patterned container sheet at the stacking location to form a three-dimensional container. Further, such methods and systems automatically print markings specified by the product pages on additional sheets of material. Then, after forming the three-dimensional container and printing the markings, such methods and systems automatically pattern the additional sheets of material according to a product pattern specified by the product pages to output product items to the stacking location. Further, such methods and systems automatically stack the product items in the three-dimensional container. The container pattern has a specific size and shape to accommodate the stacking pattern.

Abstract: A carton for containing a product. The carton comprises a plurality of panels that extends at least partially around an interior of the carton. The plurality of panels comprises a first end panel, a first side panel, a second end panel, and a second side panel. A plurality of end flaps is respectively foldably connected to a respective panel of the plurality of panels for closing an end of the carton. The plurality of end flaps comprises a first end flap foldably connected to the first side panel and a second end flap foldably connected to second side panel. The first end flap and the second end flap have cooperating features for interlocking engagement of the end flaps in a closed configuration of the carton.

Abstract: Apparatus and a method are provided for erecting a container (10) from a blank of sheet material by folding the blank to form a bottom (12), walls (14,16) and pillars (22) in its corners (18). A ledge flap (26) is folded by pivotal movement of a pivot arm (30) to form a ledge (40) and the pivot arm (30) is moved in an outwardly direction (36) until it presses ends (23) of tabs (20) from which the pillars (22) have been folded, against the insides of the adjacent walls (14,16) to bond to the walls.

Abstract: Disclosed is a carton and a method for forming the carton from a single construction. A sheet of material is processed to form a blank with apertures. The blank is folded to form panels that make up the walls and lid of the carton. A rack is formed with slots and apertures to secure contents within the carton.

Abstract: A carton for containing at least one article. The carton comprises at least one panel that can form an interior of the carton. The carton comprises at least one protection feature for protecting the articles from breakage. The article protection feature can comprise at least one feature in end flaps of the carton. The article protection feature can comprise an article protection flap foldably connected to the at least one panel. The article protection flap can be moveable between a first position and a second position wherein the article protection flap is folded relative to the at least one panel.

Abstract: A carton for containing at least one article. The carton comprises at least one panel that can form an interior of the carton. The carton comprises at least one protection feature for protecting the articles from breakage. The article protection feature can comprise at least one feature in end flaps of the carton. The article protection feature can comprise an article protection flap foldably connected to the at least one panel. The article protection flap can be moveable between a first position and a second position wherein the article protection flap is folded relative to the at least one panel.

Abstract: Various embodiments provide a method for making a garment box insert. The method comprises the steps of performing a plurality of folding actions upon a first side wall, a second side wall, a third side wall, and a fourth side wall so as to form a container portion. Extended flap portions and fold-over panels are further provided and folded so as to enclose and define the container portion. A first walled enclosure portion is further formed by performing steps of folding the second and first fold-over panels such that an elongate slot and at least to apertures are appropriately aligned. The method concludes with inserting one or more tabs of the first walled enclosure portion into one or more oval slots in the first side wall, so as to selectively secure the first walled portion relative to the first side wall during use.

Abstract: A package includes a carton (2) and articles (A). The carton includes primary walls (10, 12, 14, 16, 18) a first one (16) of which has at least one window flap (64) struck therefrom. The at least one window flap is connected at its hinged connection (68) to the first wall (16) for movement between a first position in which the at least one window flap is coplanar with the first wall and a second position in which the at least one window flap extends into the interior volume to define a window (66) in the first wall through which one of the articles is exposed to view. The at least one window flap (64) is allowed to move unimpeded by the one article when moving from the first position to the second position whereas it is in engagement at its free end edge at least in part with the one of the articles when in the second position.

Abstract: A container for dispensing beverages is provided. The container includes at least six side walls coupled together along a plurality of parallel fold lines. The at least six side walls include two end panels and at least two side panels, and the at least six side walls define a substantially cylindrical shape of the container. A bottom wall is coupled to at least one of the two end panels, wherein a shape of the bottom wall corresponding to a cross-sectional shape of the at least six side walls. The container further includes a spout cutout removably defined in a first end panel of the two end panels proximate to a fold line connecting the first end panel to the bottom wall.

Abstract: An apparatus for forming a container comprises a hopper assembly configured to store a plurality of blanks. Each blank includes a bottom panel, a pair of opposing end panels, at least one stacking tab, at least one inner side panel, and at least one outer side panel. A transport mechanism is positioned below the hopper assembly and is configured to transport a blank of the plurality of blanks from a first position to a second position. A pair of opposing folding plows is positioned below the hopper assembly. The folding plows are configured to rotate the inner side panels and the stacking tabs of the blank as the blank is transported from the first position to the second position. At least one stacking tab bullet is coupled to each folding plow. Each stacking tab bullet is configured to move a respective stacking tab relative to a corresponding inner side panel.

Abstract: A blank configured to form a package is provided. The blank may include a cover panel, a back panel, a top panel, and an elevating panel. The elevating panel and the back panel may cooperate to form a compartment when formed into a package. The top panel may include apertures that align with aligning apertures in the elevating panel. The cover panel may be pivoted between a closed configuration in which the apertures are covered and an open configuration in which the apertures are uncovered. Accordingly, a user may view the contents of the compartment when the cover panel is in the open configuration. The compartment may be employed to store cartridges for an aerosol delivery device. A related method for forming the blank into the package is also provided.

Abstract: The invention is directed toward a unique self-locking storage device for collectable cards. The container has an upper member and a lower member which are hingedly connected by a back panel. The upper member of the container fully encloses the lower member of the container when the container is closed. The panels of the upper member of the container present an uninterrupted view of decorative artwork when the container is closed. The container is preferably constructed of an acid-free poly propylene to allow protection of the collectable cards.

Abstract: The objective of the present invention is to provide a molded paper body in which the outer peripheral portion of a blank primarily of paper is formed in a raised shape using draw processing, wherein the molded paper body eliminates the occurrence of wrinkles causing leaking or instability of adhesion when used as the bottom member of a paper cup or similar paper container and a forming method thereof. The method for manufacturing this molded paper body is to draw-process, with a punch and die, a single blank primarily of paper, and is characterized by use of a holding mechanism to press the outer peripheral portion of the blank between a wrinkle pressing member and the die upper surface, and setting the force applied by the wrinkle pressing member within an appropriate range.

Abstract: A blank of sheet material for forming a polygonal container is provided. The blank includes a bottom panel, two opposing side panels, and two opposing end panels. Each side panel extends from a side edge of the bottom panel, and each end panel extends from an end edge of the bottom panel. Each end panel includes at least one major stacking extension extending from a top edge thereof. The blank further includes a reinforcing panel assembly extending from a first side edge of a first end panel of the two end panels. The reinforcing panel assembly includes an inner end panel having a minor stacking extension extending from a top edge thereof. The minor stacking extension is configured to align with a respective major stacking extension to form a stacking tab.