Abstract: A blank of sheet material for forming a container is provided. The blank includes a series of four generally rectangular panels connected along a plurality of substantially parallel fold lines. The panels include a first spaced-apart pair of panels and a second spaced-apart pair of panels. Each of the second spaced-apart pair of panels is connected to at least one panel of the first spaced-apart pair of panels. The blank also includes a corner panel extending from each side edge of each panel of the first pair of panels, and a lateral flap extending from each side edge of each panel of the second pair of panels, wherein each lateral flap has free side edges.

Abstract: A blank (2) comprising a row of body panels (P1-P4), and a row of end closure panels (P6-P9) extending substantially parallelly to the row of body panels (P1-P4), whereof each end closure panel (P6-P9) has an edge (E1-E4), and whereof each of the second (P7) and fourth (P9) end closure panels has oblique lines of weakness (S1, S11, S2, S12) which divide its panel into a central sub-panel (P7a, P9a) adjacent the corresponding second or fourth body panel (P2, P4) and two end sub-panels (P7b, P7c, P9b, P9c) adjacent the corresponding edges (E2, E4), wherein the end sub-panels (P7b, P7c, P9b, P9c) bulge away from its corresponding edge (E2, E4). A container formed from the sheet material blank and a method of forming the container is also described.

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: A blank of sheet material for forming a polygonal container is provided. The blank includes a bottom panel, two opposing side panels each extending from a side edge of the bottom panel, two opposing end panels each extending from an end edge of the bottom panel, and a reinforcing panel assembly extending from a first side edge of a first side panel of the two side panels. The reinforcing panel assembly includes a corner panel extending from the first side edge of the first side panel, a first reinforcing end panel extending from a side edge of the corner panel, a second reinforcing end panel extending from a side edge of the first reinforcing end panel, an inner reinforcing corner panel extending from a side edge of the second reinforcing end panel, and an inner side panel extending from a side edge of the inner reinforcing corner panel.

Abstract: An article-transport container comprises a floor having a respective left-side and right-side closures foldably joined thereto. A front end closure is foldably joined to the floor and to the respective right-side and left-side closures. A rear end closure is foldably joined to the floor and to the respective right-side and left-side closures. Four quad-layer corners are defined by a first quad-layer corner, a second quad-layer corner, a third quad-layer corner, and a fourth quad-layer corner which cooperate with the respective right-side and left-side closures to define an interior region adapted to receive articles therein. The first quad-layer corner includes respective outer and inner layers and respective first and second medial layers that are sandwiched between the respective outer and inner layers to enhance stacking strength of the container while minimizing scarps produced during construction of the container.

Abstract: A blank of sheet material for forming a container is provided. The blank includes a series of four generally rectangular panels connected along a plurality of substantially parallel fold lines. The panels include a first spaced-apart pair of panels and a second spaced-apart pair of panels. Each of the second spaced-apart pair of panels is connected to at least one panel of the first spaced-apart pair of panels. The blank also includes a corner panel extending from each side edge of each panel of the first pair of panels, and a lateral flap extending from each side edge of each panel of the second pair of panels, wherein each lateral flap has free side edges.

Abstract: A barrel formed from a sheet of blank material includes a plurality of side wall panels for forming sides of the barrel including a front panel, a rear panel, two opposing end panels, and at least one diagonal corner panel, at least one bottom flap for forming a bottom of the barrel, and a plurality of top flaps for forming a top of the barrel including a top front flap foldably connected to the front panel, a top rear flap foldably connected to the rear panel, and two opposing top end flaps each foldably connected to one of the end panels. The top front flap and the top rear flap include at least one closure slot. Each of the two opposing top end flaps includes at least one locking finger. The locking fingers are inserted within the closure slots for securing the top of the barrel in a closed position.

Abstract: An octagonal container for food, such as suitable for keeping or packaging tostadas, manufactured from a carton blank, is formed of eight sections or sides which includes at one end a flap with adhesion thereon that is joined to an opposite flap. The container also has edges located on top and bottom sides that are folded and joined towards the center of the container. The top part of the container is structured to form what appears to be a flower upon closure which provides a very attractive characteristic for the consumer. The container also has a practical, new, and easy closing system, so that when opening the container, it is only necessary to pull the opening flaps outward. To close the container, it is only necessary to press such flaps to the center and inwards and the container will be kept sealed. When closing the container, a “sinking” is formed in the top part of the container which acts as a cushion so that the product in the container is kept in good condition.

Abstract: A packaged plumbing fixture includes a box, a plumbing fixture, and a packaging insert. The box comprises a plurality of generally vertical sides that are interconnected to cooperatively define a cavity for containing a plumbing fixture. The plurality of sides include a first side and a second side that are connected to opposite ends of a third side. The packaging insert includes first and second generally planar surfaces. The packaging insert is positioned within the cavity with each of the first and second generally planar surfaces arranged generally parallel with and proximate to one of the sides. A sum of angles between the third side and the first side and between the third side and the second side is greater than 180 degrees.

Abstract: A package configuration for absorbent articles, such as disposable diapers, training pants and adult incontinence undergarments is disclosed. The package configuration may include one or more pluralities of absorbent articles, each plurality packaged in a flexible package. The one or more flexible packages may be wrapped and further contained by a wrap-around. The wrap-around may have first and second pairs of opposing side panels. Adjacent side panels from the first and second pair may be joined by corner panels. The corner panels may form interior angles with the side panels of from 100° to 170°. The presence of the angled corner panels may render the wrap-around better able to conform to the shape of the one or more flexible packages, and more resistant to deformation.

Abstract: According to one embodiment, a container includes at least eight side panels having generally the same dimensions. The at least eight side panels form an enclosure. One of the at least eight side panels includes a first access opening that is integrally formed therein. The first access opening permits access to the interior of the enclosure. The container further includes a top panel connected to one or more of the at least eight side panels. The top panel forms a second access opening for providing access to the interior of the enclosure. The container also includes a bottom panel connected to one or more of the at least eight side panels.

Abstract: The invention relates to a tray for transporting and displaying items such as yogurt containers. The tray is of the type comprising a bottom wall (1), side walls (2, 3, 4, 5) perpendicular to the bottom (1) and side flaps (27) enabling the attachment of a first wall (2, 4) to the adjacent wall (3, 5), each flap being hingedly connected to the side edge of the first wall (2, 4) and attached to the following wall (3, 5). According to the invention, the hinged connection of the side flap (27) to the first wall is provided by an interface area (16) in the shape of a triangle the apex (17) of which points toward the free upper edge (31, 32) of the two consecutive side walls (2, 3, 4, 5) and the base (18) of which rests on the bottom wall (1), this triangular interface area (16) being slanted from its base (18) to the apex (17) toward the outside of the outline defined by the bottom wall (1). The invention can be used for trays for transporting products such as yogurt containers.

Abstract: A reinforced container system comprises a container having a bottom wall, a pair of opposite side walls, a pair of opposite end walls, and opposed pairs of diagonal corner panels interposed between adjacent side and end walls to form an interior space. The bottom wall includes two opposed glue panels each of which is foldably joined to respective longitudinal edges of the bottom wall and each of which attached to the respective side walls. A protective sleeve is configured to detachably attach to the container. The protective sleeve includes two side walls, two end walls and opposed pairs of diagonal corner walls interposed between adjacent side and end walls. The side walls, the end walls and the diagonal corner walls are joined to one another along four vertical hinges to whereby protect the container against tremendous forces and inertia caused by mixing or shaking machinery.

Abstract: An article-transport container comprises a floor having a respective left-side and right-side closures foldably joined thereto. A front end closure is foldably joined to the floor and to the respective right-side and left-side closures. A rear end closure is foldably joined to the floor and to the respective right-side and left-side closures. Four quad-layer corners are defined by a first quad-layer corner, a second quad-layer corner, a third quad-layer corner, and a fourth quad-layer corner which cooperate with the respective right-side and left-side closures to define an interior region adapted to receive articles therein. The first quad-layer corner includes respective outer and inner layers and respective first and second medial layers that are sandwiched between the respective outer and inner layers to enhance stacking strength of the container while minimizing scarps produced during construction of the container.

Abstract: An eight-sided, octagonal carton having an increased width opening and strength as compared to a four-sided, rectangular carton, and providing for improved removal of a food product stored within the carton. The octagonal carton has a top panel, a bottom panel, and an octagonal sidewall comprising a pair of longitudinal segments and a pair of transverse end segments. The end segments further comprise a pair of individual panels that can fold at an angle to provide three sides along each end segment; two angled sides and one side perpendicular to the longitudinal segments. To gain access to the interior of the carton, only one of the panels needs to be opened creating an access opening through which the food product is extracted.

Abstract: The basket of the present invention comprises a lateral surface, a bottom and a handle (12), said basket being formed from at least a sheet provided with a plurality of folding lines, and it is characterized in that said handle extends downwardly into a partition (11) which divides the basket into two housings. Said partition (11) is preferably joined to the bottom of the basket. It is obtained a very light basket, and which occupies a reduced space if transported in its unfolded position, with a great strength and suitable to transport heavy products, such as bottles.

Abstract: An eight-sided, octagonal carton having an increased width opening and strength as compared to a four-sided, rectangular carton, and providing for improved removal of a food product stored within the carton. The octagonal carton has a top panel, a bottom panel, and an octagonal sidewall comprising a pair of longitudinal segments and a pair of transverse end segments. The end segments further comprise a pair of individual panels that can fold at an angle to provide three sides along each end segment; two angled sides and one side perpendicular to the longitudinal segments. To gain access to the interior of the carton, only one of the panels needs to be opened creating an access opening through which the food product is extracted.

Abstract: A bulk container for shipping product in bulk from one location to another location, wherein the container has a sidewall with a top end and a bottom end, a bottom closure at the bottom end of the sidewall closing the bottom end of the container, a bag liner in the container, and attaching structure on the bottom closure for attaching the bottom end of the bag liner to the bottom end of the container so that the bag liner remains in the container when the container is inverted and product is dumped from the container.

Abstract: An octahedral product dispenser for dispensing discrete product portions and a corresponding blank for constructing the product dispenser are described. The product dispenser includes two opposing hexagonal end panels, and six integrally connected rectangular side panels extending between the two end panels, wherein a first and a last of these six side panels are not integrally connected to each other but connected to one another with a flap portion. An opening is formed in one of the end or side panels for allowing access to product portions within the product dispenser, and these product portions can be arranged vertically.

Abstract: More than four sidewalls extend upwardly and outwardly from a periphery of a central base panel of a tray. Each sidewall includes opposite first and second marginal portions extending outwardly from the base panel. For each adjacent pair of sidewalls of the plurality of sidewalls, the first marginal portion of a first sidewall of the adjacent pair of sidewalls is in an overlapping relationship with, and is fastened to, the second marginal portion of a second sidewall of the adjacent pair of sidewalls.

Abstract: An article-transport container comprises a floor having a respective left-side and right-side closures that are foldably joined thereto. A front end wall is foldably joined to the floor and to the respective left-side and right-side closures. A rear end wall is foldably joined to the floor and to the respective left-side and right-side closures and at least one tri-layers corner cooperate with the respective left-side and right-side closures to define an interior region adapted to receive articles therein. The least one tri-layer corner includes respective outer and inner layers and a medical layer which is sandwiched between the respective outer and inner layers and a medical layer which is sandwiched between the respective outer and inner layers to enhance stacking strength of the container while minimizing scarps produced during construction of the container.

Abstract: An apparatus for constructing a container from a continuous blank of sheet material including a plurality of panels coupled together at a plurality of fold lines is provided. The apparatus includes a mandrel that is rotatable about a rotational axis. The mandrel includes a rotary head that defines a plurality of exterior surfaces each corresponding to a panel of the continuous blank of sheet material. The rotary head forms an opening in at least one exterior surface configured to receive at least one panel for facilitating forming the blank of sheet material into a configuration with respect to a shape of the rotary head as the mandrel rotates about the rotational axis.

Abstract: A folded box is for transporting cylindrical articles such as tires. The folded box includes two octagonal base planes that are arranged in parallel to each other. At least three rectangular main side planes, that are attached to three outer edges of each octagonal base plane, connect the base planes with each other. At least one hinged cover plane is connected to another outer edge of one of the octagonal base planes.

Abstract: A container (1) for storing and removing food comprises a first and a second container half (2, 3) which are connected to each other by means of a pivotable connection in order to pivot between an open position (4) and a closed position (5).

Abstract: A container assembly is disclosed. The container assembly includes a tube portion including a plurality of sides. The container assembly further includes a base portion including a bottom panel and a plurality of flaps extending from the bottom panel. The plurality of flaps overlap a portion of the plurality of sides.

Abstract: The present invention provides a bulk bin having a greater column strength by being resistant to wall bulging. The bulk bin is formed mainly of multiple wall corrugated board with the corrugations in a first wall oriented vertically and the corrugations in a second wall oriented horizontally. The orthogonal orientation of the corrugations results in a greater wall stiffness and less wall bulging, maintaining the wall in linear vertical orientation and retaining maximum column strength.

Abstract: A multi-sided container comprises a bottom wall, a top wall, opposite side walls, opposite end walls, a longitudinal axis and a plurality of diagonal corner walls. At least one of the plurality of diagonal corner walls that is defined by at least one diagonal corner panel and at least one reinforcement flap is overlapping one another. A portion of the bottom wall projects under and beyond a bottom edge of the at least one diagonal corner wall.

Abstract: A container assembly is provided. The container assembly includes a container formed from a first blank of sheet material. The container includes a bottom wall and a plurality of sides extending upwardly from the bottom wall such for defining a cavity therein. Each side includes an inner surface that extends between a bottom edge positioned between the bottom wall and a top edge. Each inner surface includes a height that is measured between the top edge and the bottom edge. At least one support assembly formed from a second blank of sheet material is positioned within the cavity. The support assembly includes a back panel assembly that is coupled to the inner surface of one of the plurality of sides. An extension assembly extends outwardly from the back panel assembly.

Abstract: A multi-sided container comprises a bottom wall, opposite side walls, opposite end walls, a longitudinal axis, and a transverse axis. The multi-sided container also comprises diagonal corners connecting adjacent ends of the side walls and the end walls. The diagonal corners each comprising an inner diagonal corner panel and an outer diagonal corner panel. One of the inner and outer diagonal corner panels extends at an angle of less than 45° with respect to an adjacent end wall, and the other of said inner and outer diagonal corner panels extends at an angle of less than 45° with respect to an adjacent side wall. One of the inner and outer diagonal corner panels has a major thrust vector in a direction parallel to the transverse axis of the container and said other of said inner and outer diagonal corner panels has a major thrust vector in a direction parallel to the longitudinal axis of the container.

Abstract: An octagonal container for food, such as suitable for keeping or packaging tostadas, manufactured from a carton blank, is formed of eight sections or sides which includes at one end a flap with adhesion thereon that is joined to an opposite flap. The container also has edges located on top and bottom sides that are folded and joined towards the center of the container. The top part of the container is structured to form what appears to be a flower upon closure which provides a very attractive characteristic for the consumer. The container also has a practical, new, and easy closing system, so that when opening the container, it is only necessary to pull the opening flaps outward. To close the container, it is only necessary to press such flaps to the center and inwards and the container will be kept sealed. When closing the container, a “sinking” is formed in the top part of the container which acts as a cushion so that the product in the container is kept in good condition.

Abstract: A container is adapted to transport food or other articles. The container includes a floor, two side walls, a front end closure coupled to the side walls, and a rear end closure coupled to the side walls.

Abstract: A barrel formed from a sheet of blank material includes a plurality of side wall panels for forming sides of the barrel including a front panel, a rear panel, two opposing end panels, and at least one diagonal corner panel, at least one bottom flap for forming a bottom of the barrel, and a plurality of top flaps for forming a top of the barrel including a top front flap foldably connected to the front panel, a top rear flap foldably connected to the rear panel, and two opposing top end flaps each foldably connected to one of the end panels. The top front flap and the top rear flap include at least one closure slot. Each of the two opposing top end flaps includes at least one locking finger. The locking fingers are inserted within the closure slots for securing the top of the barrel in a closed position.

Abstract: Octagonal container assemblies to package and display of products, particularly toys with moving wheels, appendages or the like to demonstrate movement of the same in the container, include a tubular body and at least two octagonal end covers removable or at least pivotal away from opposing ends of the tubular body. The container assemblies include a beam extended between the end covers and a rigid support member extended transversely from the beam so as to support the toy for at least limited operation or the wheels or the like within the container. The beam may be inserted in the container or extend along its exterior.

Abstract: A bulk shipping and storage container in the form of a drum is made of corrugated fiberboard and includes a bin with a sidewall, a closed bottom and an open top. The sidewall has a plurality of interconnected sidewall panels, and a rim is on an upper outer surface of the sidewall for engagement by the tines of a forklift to carry the container. The locking structure on the lid and bin enable the lid to be locked in place. The bottom of the container has adhesively attached overlapping panels that provide smooth interior and exterior surfaces. A preferred embodiment has a tray inserted in the bottom and a liner inserted in the tray and extending upwardly inside the sidewall. In another embodiment, a shock-absorbing pad is between the liner and the lid.

Abstract: A carton has a multi-ply configuration formed by overlying a primary blank with one or more reinforcing blanks. A separable section can formed in one or more side panels of the carton to allow for removal of articles from the carton.

Abstract: A container for food, such as used for the storage or packaging of tostadas, manufactured as a carton, which is formed with eight sections or sides that are joined by adhesive at an edge to fold the container is disclosed. The container also has edges placed on the top and bottom ends that, when interwoven towards the center of the container, permit the formation of a kind of bow with which the container is kept closed. In order to open the container, it is only necessary to pull outwards on opening projections which are part of the bow. Likewise, and as a consequence of the interweaving of the edges, an internal pulling acts as a muffling, thereby helping the food, e.g., tostadas, to be maintained in a good state, without being broken.

Abstract: A reinforced fiberboard bulk materials container is provided that has low-fiber content and is humidity resistant. According to one embodiment, a fiberboard bulk materials container includes a plurality of fiberboard sidewalls forming a storage cavity and having a compression strength of 4 to 5 times the combined weight of cartons expected to be stacked above the bulk materials container, and a moisture-resistant polymer film wrapped around the outside of the sidewalls. The polymer film may substantially cover the sidewalls and extend from the top of the container to the bottom of the container along the sidewalls.

Abstract: A carton having a shipping configuration, used for shipping and storing product, and a display configuration, used for displaying product on the top of a point of use water distribution apparatus, which may be an inverted water bottle. The carton has a first member, a second member and a hinge member. The first member has a first recess and the second member has a second recess. A compartment for holding product when the carton is in a shipping configuration is provided. The first recess and the second recess cooperate to form the compartment. The hinge member extends between the first member and the second member, into the compartment when the carton is in the shipping configuration. The hinge member cooperates with the product to maintain the product in position in the compartment when the carton is in the shipping configuration.

Abstract: A bulk container for fluid materials comprises a bin having a plurality of interconnected sidewall panels, a closed bottom, and an open top. A rim around the top of the bin defines a downwardly facing shoulder. A lid covers the open top and has elongated depending skirt panels extending downwardly past the shoulder. A clamping band is tightened around the lid skirt below the shoulder to secure the lid to the bin. Notches in an outer surface of the rim receive bendable locking strips on the lid skirt to lock the lid in position on the bin, and locking tongues on a first skirt panel are engageable in respective locking slots in an adjacent second skirt panel to hold the skirt panels in their operative downwardly folded positions. A tray and liner insert may be positioned in the bin, and a fluid-containing bag may be placed in the liner.

Abstract: A bulk container for storing, shipping and dispensing liquid and semi-liquid fluids comprises a bin having a sidewall, a closed bottom, and an open top. The sidewall comprises a plurality of interconnected sidewall panels extending at an angle with respect to one another. A lid is covering the open top of the bin and having a discharge opening therethrough adjacent one side edge thereof. A fluid-containing bag is supported in the bin and a discharge valve is on an upper end of the bag where the discharge valve is positioned to extend through the discharge opening.

Abstract: A container having interior columns on its end walls which are between the sides of the end walls. Each column is formed by a first column panel attached to an inner end panel, a second column panel attached to the first column panel and an attachment panel fastened to the inner end panel. A blank for the container.

Abstract: According to one embodiment, a container includes at least eight side panels having generally the same dimensions. The at least eight side panels form an enclosure. One of the at least eight side panels includes a first access opening that is integrally formed therein. The first access opening permits access to the interior of the enclosure. The container further includes a top panel connected to one or more of the at least eight side panels. The top panel forms a second access opening for providing access to the interior of the enclosure. The container also includes a bottom panel connected to one or more of the at least eight side panels.

Abstract: A blank of sheet material for forming a container including automatically locking bottom panels is provided. The blank includes a pair of end panels, a pair of side panels and at least one corner panel that are interconnected. The corner panel extends between an adjacent end panel and side panel. The blank includes bottom end panels extending from the end panels and bottom side panels extending from the side panels. A first coupling tab is integral with a bottom end panel, and a second coupling tab is integral with a bottom side panel. The first coupling tab attaches to a bottom side panel, and the second coupling tab attaches to a bottom end panel. The coupling tabs upwardly direct the bottom panels when the container is moved to a flat position and downwardly direct the bottom panels when the container is moved from the flat position to an erected position.

Abstract: A bulk container for storing, shipping and dispensing liquid and semi-liquid fluids comprises a bin having a sidewall, a closed bottom, and an open top. The sidewall comprises a plurality of interconnected sidewall panels extending at an angle with respect to one another. A lid is covering the open top of the bin and having a discharge opening therethrough adjacent one side edge thereof. A fluid-containing bag is supported in the bin and a discharge valve is on an upper end of the bag where the discharge valve is positioned to extend through the discharge opening.

Abstract: The invention relates to a folded box (10) for transport of cylindrical articles (20) like tyres, comprising two octagonal base planes (30;30?) which are arranged in parallel to each other. At least three rectangular main side planes (50;51;52), which are attached to three outer edges (40;41;42; 40?;41?;42?) of each octagonal base plane (30;30?), connect the base planes (30;30?) with each other. Furthermore, at least one hinged cover plane (60;60?) is connected to another outer edge (43;43?) of one of said octagonal base planes (30;30?).

Abstract: The present invention includes a blank and container formed from cellulose-based materials configured to form an octagonal shaped display and/or shipping container. The container includes a multiple sidewall thickness throughout a majority of the various sidewalls to add to stacking strength and stability of the container. Also in certain embodiments, the container includes top panels closing off the top portion of the container. Additionally in another embodiment, the container does not have any top panels at all. Likewise, the container may have solid sidewalls, or the container may have viewing and access cutouts formed in the sidewalls.

Abstract: An octagonal shaped foldable box having a flap locking system. The foldable box includes: eight sidewall sections; a pair of opposing locking flaps extending from two of the eight sidewall sections, each opposing locking flap having a generally trapezoidal shaped tab cut therein for locking a first opposed locking flap with a second opposed locking flap; and a pair of opposing interior flaps, wherein each opposing interior flap extends from three of the eight sidewall sections, and wherein each opposing interior flap includes a first and a second flap edge, and each flap edge includes a fold-over region for forming a sealed corner with two sidewall sections.

Abstract: A container for food, such as used for the storage or packaging of tostadas, manufactured as a carton, which is formed with eight sections or sides that are joined by adhesive at an edge to fold the container is disclosed. The container also has edges placed on the top and bottom ends that, when interwoven towards the center of the container, permit the formation of a kind of bow with which the container is kept closed. In order to open the container, it is only necessary to pull outwards on opening projections which are part of the bow. Likewise, and as a consequence of the interweaving of the edges, an internal pulling acts as a muffling, thereby helping the food, e.g., tostadas, to be maintained in a good state, without being broken.

Abstract: An eight-sided, octagonal carton having an increased width opening and strength as compared to a four-sided, rectangular carton, and providing for improved removal of a food product stored within the carton. The octagonal carton has a top panel, a bottom panel, and an octagonal sidewall comprising a pair of longitudinal segments and a pair of transverse end segments. The end segments further comprise a pair of individual panels that can fold at an angle to provide three sides along each end segment; two angled sides and one side perpendicular to the longitudinal segments. To gain access to the interior of the carton, only one of the panels needs to be opened creating an access opening through which the food product is extracted.

Abstract: An end closure design for a paperboard container having four or more end panels that form the end closure hingedly joined respectively to four side panels connected to each other by parallel, spaced apart fold lines. Each of the hinged end panels has a straight free edge parallel the hinged edge and each free edge has two spaced apart notches of the same shape and size cut therein, each positioned the same distance from the parallel, spaced apart fold lines such that when the panels are folded over, a notch from each end panel interlocks with a notch from an adjacent end panel. An opposing two of the hinged end panels also include two diagonal score lines, each extending from an interior edge of the notches to the interior corner formed by the fold lines between the end closure panel and its respective side panel. To form the end closure, the end closure panels without the diagonal score lines are folded inwardly, then the end closure panels with the diagonal score lines are folded inwardly.