Abstract: A zipper carton includes a first panel having an elongated slot extending therethrough, the slot having a length extending between opposing ends. A locking panel assembly includes a removable zipper tear strip and a locking tab having a linear length that is greater than the length of the slot. The locking tab includes a base projecting from the removable zipper tear strip and a first retention flap projecting from the base and being foldable relative to the base. The locking tab is configured so that when the first retention flap is folded from a relaxed position to a folded position, at least a portion of the locking tab including the first retention flap can be slid through the slot and after the first retention flap passes through the slot, the retention flap automatically resiliently rebounds at least partially toward the relaxed position so as to block retraction of the locking tab from the slot.

Abstract: A lid forming device of a cardboard box using a first flap with a slit and a second flap to be extended after being bent into a mountain shape is disclosed. The lid forming device includes first and second folding mechanisms. The fist folding mechanism folds the first flap in a direction of closing the opening. The second folding mechanism bends the second flap into a mountain shape and inserts part of the second flap into the slit of the first flap while extending the second flap. The second folding mechanism includes first and second retaining units. The first retaining unit retains a first face of the second flap located between a free end of the second flap and a bend line set beforehand in the second flap. The second retaining unit retains a second face of the second flap located between an anchored end and the bend line.

Abstract: Fastener-free packaging includes a plurality of main panels, each main panel comprising an upper panel, a central panel, and a lower panel; at least one attaching connection feature located on at least one lower panel; and at least one receiving connection feature located on at least one lower panel, wherein each lower panel is connected to at least two other lower panels by an attaching connection feature connecting to a receiving connection feature such that all lower panels are connected together thereby forming a bottom.

Abstract: A food tray formed of a unitary sheet of material includes a bottom wall, a front wall, a rear wall, first sidewall, and a second sidewall that define an opening through which an item is placed in the food tray. First and second flaps extend from respective top edges of the first and second sidewalls and are configured to be folded toward an interior of the food tray. The first and second flaps each define slots. First and second lid members extend from respective top edges of the front wall and the rear wall and are configured to be folded toward the interior of the food tray. The first and second lid members define a pair of tabs on respective side edges that are configured to engage the slots defined by the first and second flaps.

Abstract: A food tray formed of a unitary sheet of material includes a bottom wall, a front wall, a rear wall, first sidewall, and a second sidewall that define an opening through which an item is placed in the food tray. First and second flaps extend from respective top edges of the first and second sidewalls and are configured to be folded toward an interior of the food tray. The first and second flaps each define slots. First and second lid members extend from respective top edges of the front wall and the rear wall and are configured to be folded toward the interior of the food tray. The first and second lid members define a pair of tabs on respective side edges that are configured to engage the slots defined by the first and second flaps.

Abstract: A blank for forming a container, including a first major panel, a second major panel, a first minor panel connected between the first and second major panel, a first slotted flap connected at a top edge of the first minor panel including a central region having first and second slots, a second minor panel connected to the first major panel and also connectable to the side edge of the second major panel, a second slotted flap connected at a top edge of the second minor panel including a central region having third and fourth slots, a first tabbed flap connected at the top edge of the first major panel having first and fourth tabs positioned at opposite corners of the leading edge, and a second tabbed flap connected at the top edge of the second major panel having second and third tabs positioned at opposite corners of the leading edge.

Abstract: Embodiments of foldable containers, such as foldable, plastic, produce containers, and related methods. In some embodiments, a substantially planar sheet for folding into a three-dimensional container may be provided comprising a plurality of side portions, each side portion comprising opposing flaps positioned on opposite sides. Each of the side portions may comprise opposing flaps, some of which may comprise tabs extending therefrom to be used for coupling with an adjacent side portion during a folding process. One or more of the side portions may also, or alternatively, comprise a stacking tab and/or a stacking tab receiving opening. The stacking tabs may be configured to be positioned within a stacking tab receiving opening of an adjacent container after the sheet has been folded into a three-dimensional container.

Abstract: Disclosed are reclosable and stackable food trays formed from a single blank that are capable of being folded and glued on standard machinery. Embodiments of the invention include raised gussets that extend beyond the top edge of the side panels of the formed tray and beyond the top of the formed tray. In some embodiments, the raised gussets help prevent distortion in all dimensions and facilitate the stacking of multiple trays on top of one another such that the stacked trays cannot slide off the lower tray.

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: A blank of sheet material for forming a container is provided. The blank includes a first reinforcing end panel extending from a first end panel, a first corner post panel extending from a first edge of the first reinforcing end panel, and a first top end panel defined within the first reinforcing end panel.

Abstract: A reinforced cross laminated corrugated paperboard bulk container has an outer component with corrugations running in a first direction, and an inner liner laminated to the outer component, with the liner having corrugations extending perpendicular to the corrugations in the outer component. Reinforcing strands are in both the liner and the outer component, extending perpendicular to the respective corrugations thereof. Interlocking top flanges are on the top edges of the outer component, and interlocking bottom flanges are on the bottom edges thereof. The interlocking bottom flanges include a chevron shaped locking slot in one flange and a locking tab on an opposed bottom flange. Folds extend across the bottom flanges to enable them to deflect and slide relative to one another during set up of the container. Vertical scores in the liner are pre-broken prior to laminating it to the outer component.

Abstract: A reinforced cross laminated corrugated paperboard bulk container has an outer component and an inner liner laminated to the outer component with the liner having corrugations extending perpendicular to the corrugations in the outer component. The bottom edges of the sidewalls include a first pair of flaps and a second pair of flaps each of which foldably extend outwardly therefrom and wherein each of the second pair of flaps having a pair of spaced apart triangularly shaped slots formed therein and wherein each of the first pair of flaps includes a pair of locking tabs formed on opposed end of the respective first pair of flaps which are engaged with the slots on the second pair of the flaps to securely close the bottom of the container. Vertical scores in the liner are pre-broken prior to laminating it to the outer component.

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 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: 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 box includes an outer shell surrounding an inner sleeve having spaced apart first and second sleeve side walls attached to a sleeve bottom wall. A split sleeve top wall spaced apart from sleeve bottom wall defines spaced apart first and second open ends therebetween. Split sleeve top wall includes first and second sleeve sections separated by a sleeve split. Outer shell includes first and second shell side walls attached to a shell bottom wall and covering first and second open ends of inner sleeve. A shell top wall spaced apart from shell bottom wall includes first and second shell sections separated by a shell split substantially perpendicular to sleeve split. Flanges extend from shell top and bottom walls and first and second shell side walls along and bonded to outside surfaces of the sleeve side walls. The shell and sleeve are constructed from shell and sleeve blanks respectively.

Abstract: A carton particularly well suited for storing packaged dry goods is designed such that the closure flaps that close a top opening of the carton do not obstruct the loading of goods into the carton through the top opening when the carton is placed on its side. The carton includes a front and rear panel that bow slightly outwardly so as to apply tension to the closure flaps connected to the front and rear panel. This tension prevents the flaps from falling into the opening during loading of the carton. This tension is created by vertical score lines in the front and rear panels as well as their associated closure flaps. In this regard, the mechanism to hold the closure flaps open is integrally formed with the carton.

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.

Abstract: An octagonal bulk bin has sidewalls, end walls and diagonal corner panels interposed between adjacent sidewalls and end walls. Bottom flaps are foldably joined to a bottom edge of the sidewalls, end walls, and diagonal corner panels, and gusset panels connect adjacent side edges of the bottom flaps, facilitating set up of the bulk bin and spacing flap cuts from the corners of the bin to minimize or eliminate initiation of tears in the vertical corners of the bin. A plastic pallet tray has an upstanding lip around its periphery, shaped and sized to closely receive the bottom end of the octagonal bin to reinforce the bottom end and facilitate handling of the bin.

Abstract: An octagonal bulk bin has sidewalls, end walls and diagonal corner panels interposed between adjacent sidewalls and end walls. Major bottom flaps are foldably joined to a bottom edge of the sidewalls, minor bottom flaps are foldably joined to a bottom edge of the end walls, and diagonal bottom flaps are foldably joined to a bottom edge of the diagonal corner panels. A cut separates each major bottom flap from an adjacent diagonal bottom flap, and a web panel connects adjacent side edges of the minor bottom flaps and diagonal bottom flaps. According to one aspect of the invention, each diagonal bottom flap, web panel, and portion of an adjacent major bottom flap are crushed. According to another aspect of the invention, differently shaped notches in a free edge of the minor flaps form locking tabs that are engaged in slots near a free edge of the major flaps.

Abstract: A flexible board, for forming a package, comprises a body portion, a big bottom piece, a small bottom piece, a left-side bottom piece, and a right-side bottom piece. The body portion has a rear body piece, a left-side body piece, a front body piece, and a right-side body piece. The big bottom piece is connected to a lower side of the rear body piece. The small bottom piece is connected to a lower side of the front body piece, and has a strip piece, and first and second projecting pieces. The left-side bottom piece is connected to a lower side of the left-side body piece, and is formed with a cut-out section close to the first projecting piece. The right-side bottom piece is connected to a lower side of the right-side body piece, and is formed with a cut-out section close to the second projecting piece. The length of the insert piece is shorter than the distance between the first and second projecting pieces.

Abstract: A container and its associated container blank for shipping and displaying products. The container blank includes a plurality of side panels, bottom panels, and top panels that are erectable into a fully enclosed shipping container. Formed in some of the side panels and some of the top panels are removable punch-out window panels. When removed, the punch-out window panels leave a top panel that defines a periphery around the “window” area. Various stacking tabs and slots are configured in the bottom panels. The stacking tabs and stacking slots are positioned such that when engaged and the containers are in a vertically stacked arrangement, the stacking tabs bias against a portion of the periphery of the top panel. When not engaged, the container has a flat bottom.

Abstract: A collapsible structure having walls and hinges, the walls being foldable to reduce the volume of the collapsible structure via hinges separated by a distance to form pockets which receive therein the thickness of one or more collapsed walls.

Abstract: A packaging container includes: first fold sections for folding therealong, each of the first fold sections being provided longitudinally in a substantially central part of the first opposing side plate; second fold sections for folding therealong, each of the second fold sections being provided on the first bottom plate forming flap as an extension of the first fold section; and third fold sections for folding therealong, each of the third fold sections being provided on the first top cover forming flap as an extension of the first fold section. The second opposing side plate is equal to or smaller than the first opposing side plate in width. This makes it possible to fold up the packaging container easily and compactly.

Abstract: A collapsible bulk bin, formed from a sheet that is folded upon itself to form a tube, having a plurality of bottom panels pivotably connected to respective side walls of the bulk bin. A plurality of connector panels foldably connect adjacent ones of the bottom panels, to provide a slotless bottom configuration to provide reinforcing strength to the bottom, and bottom regions of the side walls of the bulk bin.

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: A carton having a mechanism for securely closing and locking the end of said carton by a locking tab without the use of adhesive.

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.

Abstract: A minor-end loading carton is provided that includes a bottom panel opposing a top panel, and a second pair of opposing panels connecting the bottom panel to the top panel to form a rectangular body having a first minor end and a second minor end. The minor ends may be closable via a plurality of flaps foldably connected to the panels. A method is further provided for loading and shipping elongate materials in a minor-end loading carton. According to one embodiment of the invention, the method includes loading the products downward through a second minor end of a minor-end loading carton against the inside of the closed first minor end while the first minor end is substantially horizontal. The products may include elongate materials, such as stalk produce, which are preferably oriented parallel to the minor ends extending from a first panel to a second panel.

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.

Abstract: An improved corrugated paper bin blank, collapsed bin, and bin for holding bulk goods are disclosed. According to an embodiment, the bin blank comprises three longitudinal sections, one for a bottom section, another for rectangular outer walls, and a third for octagonal inner walls. Various cut and/or scored portions of the longitudinal sections fold and overlap each other to create the final bin, and can be secured with matching tabs and slots.

Abstract: A carton, and a blank for forming the carton, are provided having interlocking flanges that may be folded down into a locked configuration in a variety of sequences and that may retain the locked configuration when folds are misaligned. The carton includes a plurality of walls having locking flanges foldably attached thereto. Each one of the locking flanges is adapted to engage adjacent locking flanges in a folded configuration. Each one of the locking flanges includes a first side portion and an opposing second side portion. Each of the side portions includes a first tab, a second tab spaced apart from the first tab, and an engagement edge disposed between the first tab and the second tab. In a folded configuration, each one of the tabs and the engagement edge of a side portion engages corresponding tabs and the engagement edge of an adjacent flange side portion.

Abstract: A foldable container comprising a sheet of material having a plurality of panels hingedly connected together to permit folding thereof into a polygonal shape for storing liquid, solid or granular material. Male and female flaps are hingedly connected to the panels, and are foldable into an interlocked arrangement to form the container bottom. A lid can be provided having a lid panel and one or more lid flaps hingedly connected thereto. The lid flaps each have a lid opening and a handle portion, and the sheet has corresponding panel openings and handle portions. The lid flaps have locking tabs that can be extended through the aligned lid and panel openings to secure the lid in place.

Abstract: A corrugated paperboard bulk box has opposed pairs of parallel side walls, and in a preferred embodiment, has interposed diagonal corner panels to form an octagonal box. The bottom of the box is closed by opposed pairs of interlocking major and minor bottom flaps, wherein one pair of flaps have notches in their free edges and the other pair of flaps have T-shaped locking tabs in their free edges. The notches form a central opening in the bottom when the flaps are folded closed, and the locking tabs are pushed through the opening to lock the flaps closed. Aligning tabs project outwardly from opposite side edges of one pair of opposed bottom flaps, and complemental slots are formed at the folding connection of another pair of bottom flaps, so that when the flaps are folded inwardly toward one another, the tabs extend into the slots to square the box and hold it square.

Abstract: This invention provides a collapsible box made of corrugated plastic, which has improved hinge line/score line configurations between walls and panels and improved hand holds. A plastic box of this invention preferably has an automatically lockable bottom to facilitate erection of the box, and can be easily collapsed for return shipment and reuse.

Abstract: A carton and blank for forming the same including a plurality of spaced apart sections having respective end panels, at least one locking mechanism including a notch formed in one of the end panels and an edge portion formed in an adjacent end panel, each edge portion having a slanted portion and a straight portion forming a junction with the junction being insertable into the notch when the sections are folded together.

Abstract: A corrugated paperboard bulk box has opposed pairs of parallel side walls, and in a preferred embodiment, has interposed diagonal corner panels to form an octagonal box. The bottom of the box is open in the center and is formed by opposed pairs of interlocking major and minor bottom flaps, wherein one pair of opposed flaps have locking notches in their free edges and the other pair of opposed flaps have locking notches in their outer end edges. The locking notches in the respective pairs of flaps are adapted to interengage when the flaps are folded inwardly toward one another and pressure is exerted on one pair of the flaps, to lock the flaps in their folded relationship. An aligning notch is on a free edge of a pair of opposed bottom flaps for cooperative interengagement with an aligning slot at an adjacent end of the folding connection of an adjacent bottom panel for squaring the box as it is being set up.

Abstract: An enclosed carton comprising a dispenser in one end of the carton that can be easily opened and closed without tearing the paperboard, the dispenser having a dispensing flap joined at its inner edge to the end of the bottom panel, with the dispensing flap being attached at its side to the side exiting panels of the carton by gusset straps, with the outer edge of the dispensing flap being tucked beneath the bottom edges of side exiting end flaps when the carton is closed, with the dispensing flap having a holding flap recessed in its outer edge for engaging a holding tab on the bottom edges of the side exiting flap.

Abstract: A carton and blank for forming the same including a plurality of spaced apart sections having respective end panels, at least one locking mechanism including a notch formed in one of the end panels and an edge portion formed in an adjacent end panel, each edge portion having a slanted portion and a straight portion forming a junction with the junction being insertable into the notch when the sections are folded together.

Abstract: A folding box for products such as pastries and cakes comprises a base which receives the product to be packaged and which is bordered by two main flaps and two secondary flaps. Each main flap is extended by a limb connected to the body of the flap by a folding line forming an articulation. Two slits are cut into each main flap and straddle the folding line. Each secondary flap terminates in a locking strip having a head and two side notches for entering the slits.

Abstract: A carton of foldable material protects an article packed therein by holding the article away from the bottom of the carton, and preferably by holding the article firmly, yet in a cushioning manner, in a position spaced away from all the exterior walls of the carton. The carton is assembled from a blank of foldable material defining a plurality of spacer panels foldably connected to automatic bottom panels, such that when the carton is erected, the auto-bottom panels form a generally planar bottom of the carton, and the spacer panels extend generally axially into the carton from the bottom to form a two-dimensional support base for holding an object at a location spaced above the bottom of the carton. A top closure includes a clamping member extending into the carton, such that when the carton is closed, the spacer panels and the clamping member are urged against opposite ends of the object within the carton, to hold the object therebetween.

Abstract: A container having a shelf member disposed on the top of a side panel of the container. The shelf is further attached to an adjacent side panel of the container through a pull-down member. Assembling the container from a flat knockdown form automatically pulls the shelf into position for use in stacking such containers. A knockdown and a blank for making the container are also provided.

Abstract: A carton of foldable material protects an article packed therein by holding the article away from the bottom of the carton, and preferably by holding the article firmly, yet in a cushioning manner, in a position spaced away from all the exterior walls of the carton. The carton is assembled from a blank of foldable material defining a plurality of spacer panels foldably connected to automatic bottom panels, such that when the carton is erected, the auto-bottom panels form a generally planar bottom of the carton, and the spacer panels extend generally axially into the carton from the bottom to form a two-dimensional support base for holding an object at a location spaced above the bottom of the carton. A top closure includes a clamping member extending into the carton, such that when the carton is closed, the spacer panels and the clamping member are urged against opposite ends of the object within the carton, to hold the object therebetween.

Abstract: A tote box intended for use in very confined locations such as under the counter of the cashier station in a retail clothing establishment, the box having four flaps, each of which has a tab formed in the center of the edge of the flap. Each wall to which the flap is attached has a gripping aperture into which the tab carried by the flap may be inserted while the box is in use. In addition, a bend line provided between the flap-wall junction and the tab means enables the portion of the flap containing the tab means to be easily inserted into the gripping aperture. Further, a slot in each of two opposing end walls functions to receive and restrain the exterior flap of the two flanking flaps.

Abstract: A box-shaped carton having additional rectilinear corners for holding a plurality of glassware articles, which has increase vertical and/or horizontal stiffness for storing and stacking purposes. The carton includes at least five side panels to form at least one additional flat edge from the increased rectilinear corners for displaying printed material about the stored articles. The carton also can be folded into a sleeve when fully glued together. A blank for forming the carton is also provided.

Abstract: A reinforced display carton is cut from a single sheet of material and folded to form exterior wall panels, bottom flaps and an internal subdividing web, that can be collapsed flat for shipping. The bottom flaps lock together when the carton is erected into a rectilinear state, and engage with the subdividing web, which is reinforced by folded over panels. A barb shaped slotted tongue on one of the bottom flaps fits into a slot between the other bottom flaps to lock them, and straddles a lower edge of the internal web. The subdividing web is formed from an extension of a half-width rear panel folded at a rear glue joint with a second half-width rear panel, and is attached at a glue tab to the back side of the front panel. The web has upper and lower reinforcing panels folded up and down over one another and locked in the slot of the tongue. Access openings extend up to the top edge of the front wall on either side of the central web, and the central web reinforces the carton against vertical forces, e.g.

Abstract: A mailing pack includes a bottom panel and first and second side flaps hingedly connected with first and second opposite edges of the bottom panel. First and second end flaps are hingedly connected with third and fourth opposite edges of the bottom panel. The first end flap extends in a first direction from the hinge edge thereof and the second end flap extends from the hinge edge thereof in an opposite direction. The bottom panel, first and second side flaps and first and second end flaps are constructed from a fluted material having flutes extending in a second direction. A securing tab arrangement secures the end flaps in substantially parallel covering relation to the side flaps and the bottom panel.

Abstract: A carton of recyclable material adapted to receive a stack of discarded newspapers to create a transport pack which can, in toto, be recycled at a recycling facility. The carton is formed by a pair of side walls having upper and lower foldable long flaps, and a pair of end walls having upper and lower foldable short flaps. Formed at the corners of the long flaps are latching tongues that are insertable into corresponding slots at the ends of the short flaps. The end walls are accordion-foldable, whereby the carton may be collapsed into a flattened storage state. To put the carton into its loading state, the carton is expanded, the lower short flaps are folded in and the lower long flaps are folded thereover, the latching tongues being then inserted in the slots at the lower corners of the carton to form a bottom ledge on which the newspapers are piled.

Abstract: A carton with a self-locking end closure includes a pair of end flaps connected by fold lines to end walls, and a pair of side flaps connected by fold lines to sidewalls. The end flaps have tapered or notched side edges and an outer edge. The outer edge of each end flap includes two symmetrically positioned notches. Each end flap also includes a pair of locking tabs. The side flaps include a pair of side edges and an outer edge and a pair of hinged locking devices which are symmetrically positioned at predetermined distances from the outer edges. The locking devices include an ear or flap, a cut line defining the ear or flap, a hinge line along which the ear or flap rotates, and a tab adjacent the ear. The end flaps are foldable against the side flaps, permitting the locking tabs of the end flaps to engage the locking devices of the side flaps to lock the end closure of the carton.

Abstract: A carton, typically of corrugated paperboard, is formed from a one-piece blank having major side wall bottom flaps and minor end wall bottom flaps arranged to be securely interlocked, for which purpose openings which comprise or include slits are provided preferably in the major side wall bottom flaps into which may be inserted tabs preferably on the corners of the minor end wall bottom flaps. The tabs are shaped so as to provide hooks which engage exposed edges of the slits to lock and prevent the tabs from being accidentally withdrawn after insertion, thus providing a carton with a locked bottom closure.