Abstract: A shipping container made of two panels each made of recyclable, single face corrugated paper comprising an outer liner with corrugated medium. In one embodiment, the panels are formed from a large blank, that is folded in half and joined at their side edges. The flutes on the corrugated mediums are parallel and longitudinally aligned with the shipping container's longitudinal axis. The top edge of each panel is detached and form a top opening into an interior pocket formed between the two panels. Formed or attach to one panel is a top flap configured to be folded over and selectively attached to the opposite panel to close the top opening, Formed on each corrugated medium is at least one set of score lines of various geometric shapes and orientations. The score lines act as folding lines that enable the panels to bend along different axes so that the overall shape of the shipping container better conforms to the object placed in the interior pocket.

Abstract: A packaging material is provided, comprising a core material layer and at least one polymer layer being laminated thereto. The core material layer is provided with at least one area being configured to assist in folding the packaging material into a bottom end corner of a package to be formed, wherein the packaging material comprises a first set of crease lines being designed to form a bottom end of the package, and a second set of crease lines being designed to form a main body of the package. The at least one area comprises an intersection of a plurality of crease lines, each having a triangular cross-section, while a plurality of crease lines of the first set of crease lines, each having a triangular cross-section and having a virtual extension through the intersection, are terminated such that they end at a distance from the intersection.

Abstract: A corrugated plastic box and a method for manufacturing a corrugated plastic box from a blank are provided. The method includes the steps of forming rounded edge seals on the perimeter edges of the blank, pre-sealing portions of the blank to form a plurality of areas in which major and minor flap slots and a glue tab are desired, ultrasonically scoring the blank to form a plurality of flap score lines, and cutting the blank through the plurality of pre-sealed flap slots and glue tab, leaving a sealed edge.

Abstract: A sheet packaging material for producing a sealed package comprises two first boundary edges parallel to a longitudinal direction and two second boundary edges parallel to a transversal direction orthogonal to the longitudinal direction. The sheet packaging material includes at least a bottom transversal crease line including a bottom central portion, a bottom end portion and a bottom side portion. The sheet packaging material includes a pair of slanted crease lines inclined relative to both the longitudinal and transverse directions. The slanted crease lines have first ends pointing to one of the second boundary edges and second ends pointing to a continuous line parallel to the transversal direction and including the bottom central portion and the bottom end portion. The slanted crease lines delimit, with the bottom side portion, a flap area of the sheet packaging material designed to form at least part of a lateral flap of the package.

Abstract: A paper container having a top portion (4) that is tightly closed by bonding together opposing surfaces of first top sealing panels (20) and opposing surfaces of second top sealing panels (22), and each of side panels (16) is folded along a first side panel folding line (26) and a second side panel folding line (27) to form a flap (35) having a substantially triangular shape. The top portion (4) is formed by folding down the flaps (35) onto right and left side surfaces of a tubular body (3) through mountain-folding along front-side top panel vertical folding lines (17), front-side top panel vertical folding lines (18), and front-side top sealing vertical folding lines (23), and through valley-folding along second top portion horizontal folding lines (15) and back-side top sealing vertical folding lines (24).

Abstract: A carton for holding a food product can comprise a tray and a lid. The lid can cooperate with the tray to at least partially close the carton. The carton further can comprise a hinge at least partially foldably connecting the lid and the tray. The hinge can comprise a first hinge fold line, a second hinge fold line, and a cut extending between the first hinge fold line and the second hinge fold line. The first hinge fold line and the second hinge fold line are generally aligned along a hinge axis, and the cut comprises a central portion that is generally parallel to the hinge axis and is offset from the hinge axis. Portions of a side panel of the tray are foldably connected to respective portions of a side panel of the lid along the respective first and second hinge fold lines.

Abstract: A carton (12) includes a first wall (22) and a second wall (20). The first wall (22) includes a first edge (21) and a second edge (23) that are opposed to one another. The first wall (22) and the second wall (20) are adjoined along the first edge (21). The carton (12) includes a handle (30). The handle (30) includes a handle opening (80) that is elongated along a longitudinal axis that extends transversely to the first edge (21). The handle opening (80) is configured to be engaged no closer to the second edge (23) than to the first edge (21).

Abstract: A blank of sheet material for forming a container is provided. The blank includes a tray panel assembly, a cover panel assembly, a fold line connecting the tray panel assembly and the cover panel assembly, and an anti-buckling mechanism interrupting the fold line. The anti-buckling mechanism includes a series of cuts positioned at least partially below the fold line in the tray panel assembly. The series of cuts extends more than half a length of the fold line. Each cut of the series of cuts is substantially straight. The anti-buckling mechanism further includes an upper cut line defined in the cover panel assembly.

Abstract: A blank, carton, or package including a handle formed in a top panel is described. Deformation lines can be included on the blank or carton to allow the handle to flex, thereby increasing handle strength. The blank can include corner-forming panels attached to end flaps that can be used to form corners in the formed carton or package. The corners provide reinforcement strength to allow stacking of the cartons or packages, such as on pallets or during shipment. Openings can be provided in select areas of the blank, carton, or package to allow ventilation to and from the interior of the carton or package. Connecting panels in the top panel can be removed to dispense articles from the carton or package.

Abstract: A carton for containing a plurality of articles. The carton comprises a first top panel, a second top panel, a bottom panel, a first side panel, and a second side panel. The first top panel and the second top panel being at least partially overlapped to form a top wall of the carton. At least two end flaps are overlapped with respect to one another and thereby at least partially form a closed end of the carton. A handle in the top wall of the carton comprises a first handle section in the first top panel, a second handle section in the second top panel, and a handle reinforcement flap foldably connected to at least one of the first top panel and the second top panel. The first handle section, the second handle section, and the handle reinforcement flap are placed in overlapping relationship to form the handle.

Abstract: When according to the invention, a container is formed from a sheet-shaped material, and it is punched and scored such that the base (7) and the side members (3, 4, 5, 6) constitute an entity without incisions, cuts and the like, it is possible to achieve a container which is foldable, in that the side members may be folded inwards over the base, and which may be erected to provide a container which, when made of a combustible material, may be disposed of by incineration after use. As the container is completely liquid-tight, it may be used for liquid as well as solid contents.

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: The present invention includes a blank and container formed of cellulose-based materials configured to form a reusable and collapsible container. The container in the partially assembled, knock-down position lies substantially flat and is capable of being stacked and shipped. Arrival at a job site or at a time requiring the use of the container, the partially assembled knock-down container may be easily converted into a fully erect container ready for use as intended. Once loaded with product, the first and second top panels may be folded down to enclose the container. The container positions the relief scores primarily in the side panels with only a single relief score in the bottom panel. This configuration allows the bottom panel to distend while the container is in the collapsed state while not adversely affecting overall container strength.

Abstract: In a bulk bin having side walls joined to one another at adjacent edges along vertical scores, and bottom flaps joined to bottom edges of the side walls along a flap score, with adjacent flaps separated from one another by a flap slot, a shaped cut is made at the terminal end of the flap slot to redirect stress away from the bottom end of the vertical score and resist initiation of tearing of the vertical score at that point. In one embodiment, the shaped cut is a downwardly open hook shape which terminates in an end pointing laterally away from the vertical score and into the flap. In another embodiment, the shaped cut resembles a modified Greek letter psi (?), with the ends pointing laterally away from the vertical score, and in still another embodiment, the shaped cut is “T” shaped, with the ends of the “T” pointing laterally away from the vertical score.

Abstract: An octagonal bulk bin of corrugated paperboard has opposed parallel side walls spaced a predetermined distance apart and opposed parallel end walls spaced a predetermined distance apart. The side and end walls are joined by diagonal corner panels. The diagonal corner panels are made wider than the corner panels in a conventional bin, and the side and end walls are narrower, with the corner panels and the end walls having approximately the same width, while maintaining the predetermined spacing. This configuration reduces the bulge experienced when product is loaded into the bin. In addition to the wider corner panels, or in lieu thereof, scores may be placed in at least one of the side and end panels to define a line along which controlled and predetermined buckling will take place, if buckling occurs.

Abstract: A carton and a carton blank each includes a first wall, a second wall hingedly connected to the first wall, a handle strap attached at an end thereof to an inwardly displaceable portion of the second wall. The strap is arranged in a stored position to be in substantially co-planar relationship with the first wall, wherein inward displacement of the inwardly displaceable portion provides a surplus of material to enable the user part of the strap to be brought into a position of use.

Abstract: An octagonal bulk bin of corrugated paperboard has opposed parallel side walls spaced a predetermined distance apart and opposed parallel end walls spaced a predetermined distance apart. The side and end walls are joined by diagonal corner panels. The diagonal corner panels are made wider than the corner panels in a conventional bin, and the side and end walls are narrower, with the corner panels and the end walls having approximately the same width, while maintaining the predetermined spacing. This configuration reduces the bulge experienced when product is loaded into the bin. In addition to the wider corner panels, or in lieu thereof, scores may be placed in at least one of the side and end panels to define a line along which controlled and predetermined buckling will take place, if buckling occurs.

Abstract: A corrugated collapsible shipping container is disclosed which includes a rigid pallet having side panels, a back panel and a front door panel extending upwardly from the pallet, one side panel and the back panel formed from a sheet of corrugated material, and the other side panel and the door panel formed from a second sheet of corrugated material. Corrugated support beams extend across the top with a top sheet closing the container. The front door is self-hinged for access into the container.

Abstract: A carton and blank for forming a carton for packaging a plurality of articles, for example bottles, comprises a plurality of panels for forming a tubular structure including a top wall panel having opposed side edges and end edges. The top panel is provided with first and second spaced apertures provided therein so as to define a handle, and a score line extends from the handle to a cut line disposed along a side edge of the top wall panel thereby to direct lifting stresses away from the handle.

Abstract: An octagonal bulk bin of corrugated paperboard has opposed parallel side walls spaced a predetermined distance apart and opposed parallel end walls spaced a predetermined distance apart. The side and end walls are joined by diagonal corner panels. The diagonal corner panels are made wider than the corner panels in a conventional bin, and the side and end walls are narrower, with the corner panels and the end walls having approximately the same width, while maintaining the predetermined spacing. This configuration reduces the bulge experienced when product is loaded into the bin. In addition to the wider corner panels, or in lieu thereof, scores may be placed in at least one of the side and end panels to define a line along which controlled and predetermined buckling will take place, if buckling occurs.

Abstract: At least one corrugated sheet is formed into a corrugated carton has a top panel, a bottom panel, opposite side walls, and opposite end walls. Intermittently spaced slits are formed through the corrugated sheet along fold lines defined between the top panel and the side walls and between the top panel and the end walls. Discrete openings are provided in the top panel to receive individual cans.

Abstract: An improved paperboard beverage carrier is disclosed having an improved lift handle. The improved lift handle comprises a laterally extending elongated handle opening within the top panel of the carrier. At least one continuous score line encircles the handle opening and extends onto the carrier side panels to limit the propagation of paperboard tears emanating from the handle opening. Predetermined perforated tear lines are further provided extending from the lateral ends of the handle opening and terminating at the encircling score line.

Abstract: An elongate generally-rectangular single handle opening is disposed transversely across the top panel of a sleeve-type carrier. Optionally, a generally-rectangular stress-relief score line arrangement extends transversely completely across the top panel and down into the side panels, and is centered around the handle opening. A generally-rectangular tear-stop score line arrangement extends transversely only partially across the top panel, and encircles the handle opening between the handle opening and the stress-relief score line arrangement. In this manner, tears originating at the handle opening are substantially prevented from propagating across the top panel of the carrier and compromising the structural integrity of the carrier.

Abstract: The present invention is a carton having side panels which intersect at beveled edges to provide greater grip stiffness and reduced surface area to volume, and a blank therefor. The blank has vertical score lines which extend along the entire length of the blank at least two of the edges in order to assist in the fabrication of the carton on a form, fill and seal packaging machine. The carton may have a rectangular cross-section, a square cross-section or the like. The carton may have a fitment attached thereto for accessing the product contained therein. The carton may have an overfolded bottom for protection against leakage and wicking.

Abstract: A bulk container is formed from a blank of corrugated sheet material having wall fold lines demarcating end wall panels and side wall panels, and flap fold lines demarcating top and bottom closure flaps. A T-shaped slot in the blank separates adjacent closure flaps from one another. A first portion of each slot extends inwardly from the free outer edges of the closure flaps and terminates at a second portion which extends substantially perpendicular to the first portion. The first portion of each slot is substantially aligned with a corresponding wall fold line. The second portion of each slot extends substantially colinearly with a flap fold line. The slots reduce binding and bunching of the thick multilayer reinforced walls found in conventional bulk container constructions, and at the same time avoid formation of through-holes at the corners of the container.

Abstract: There is provided a carton having end panels 13, side panels 15, a top panel 12 and a base. A plastic strap handle 27 is adhesively secured to the two end panels between pairs of cuts 23 which extend across the hinge between the top panel 12 and the end panels 13.

Abstract: A container and corresponding blank from which such container is formed is particularly suitable for packaging liquid products and aseptically packaging liquid foods. The rectangular shaped blank may be formed of a laminated sheet material that preferably includes a composite of paperboard web, aluminum foil and intermediate layers of heat sealable polymer. All blank fold lines are scored and an induction sealing flange area is provided around the entire blank perimeter. A unit of several sheet linked blanks is symmetrically folded about a central axis for juxtaposed alignment of sealing flange areas around the perimeter of the unfolded blank. After induction sealing, the package side flange at the bottom of the unit, the resulting tube pocket is open and charged with a material quantity of liquid. After charging, the series of edge flanges above the first sealed edge flange are also induction sealed and severed from the unit remainder to complete a pillow shaped package.

Abstract: Substantially parallelepipedic packaging and gable-top containers for liquid contents, for example milk, are manufactured by folding and sealing of laminated packaging material and include two substantially planar end portions, as well as four vertical wall panels. The volume of the packaging container may be increased in relation to the area of the packaging material employed in that the vertical wall panels, the primary wall panels, are supplemented with secondary wall panels which are defined by straight, vertical fold lines which, at the upper and lower ends of the panels, respectively, merge into pairwise converging diagonal fold lines which intersect at a point. In a blank for the packaging containers, the wall panels are defined throughout the greater part of their length, by straight, parallel, vertical fold lines.

Abstract: A carton formed from sheet material for containers such as cans or bottles includes a top wall, a pair of side walls and a bottom wall interconnected to form a tubular structure. A notional strip is defined along the top wall, having notional side edges, and extends between the end edges and has a width less than the distance between the side edges. A pair of hand apertures is defined in the top panel, disposed generally astride the notional strip and generally along the notional side edges. A cut line is formed in the top panel and extends from an end edge of the aperture along one of the notional side edges and curves away therefrom to a termination point, the cut line defining a radius of curvature and an area within the arc of curvature. At least one score line is defined in the top panel and extends from a first point disposed within the radius of curvature generally to an adjacent corner of the top panel.

Abstract: A carton including a bottom panel and first and second opposite side panels each connected to the bottom panel. The carton further includes first and second end panels connected to the bottom panel and a top connected to the side panels. The top includes a multi-ply handle section flanked by opposite single-ply sections, with the top being foldably connected to the first and second sides and extending from the first to the second end. The top includes first and second hand openings which define a central hand grip. Furthermore, the top includes four tear control cuts extending outwardly away from adjacent the central hand grip. The tear control cuts are each J-shaped and lead away from the multi-ply section. The J-shaped tear control cuts each include a shank portion and a hook portion and the hook portions each point away from the multi-ply handle section. Also, the shank portions are each substantially aligned with a corner of the top.

Abstract: An octagonal container is formed from corrugated paperboard with overlapping flaps for eliminating gaps in the container bottom wall. Prestretched polypropylene straps are automatically applied to the container when in its flattened condition for providing girth support to the container when in its erected condition. The straps are positioned from the lower portion of the container side walls at ever increasing distances from each other for limiting container bulge when carrying products having varying effects on the container. With such an arrangement of straps, economically and environmentally desirable single and double wall corrugated paperboard can be used where typically triple wall and laminated paperboard containers are used.

Abstract: A blank for forming a gable top carton is set forth which reduces the surface area of the carton for a given carton volume. The carton blank comprises a generally rectangular body having an upper section, a mid section, and a lower section, each of the sections being separated from each other by one or more generally horizontal score lines. The upper section of the rectangular body comprises a plurality of score lines for defining a gabled top of the resulting carton while the lower section of the rectangular body comprises a plurality of score lines for defining a folded bottom section of the resulting carton. The mid section of the rectangular body comprises a plurality of score lines for defining four sidewalls of the resulting carton. Adjacent sidewalls are separated from one another by a first score line partially extending from the upper section and a second score line partially extending from the lower section.

Abstract: A blank for forming a U-shaped support envelope for a container package containing rectangular carton containers of uniform height, shape and size, the containers each having a top, a bottom and sides, the U-shaped support envelope having an uncovered top, two opposed uncovered sides, two opposed planar side wall members extending from a planar base, each side wall member having a top edge. Tongue-slot combinations are disposed at the corners of the blank so as to have available cushion tabs for engaging the upper uncovered face of end containers in the package. The tabs extend from slots for engaging a band for holding the containers in the U-shaped envelope.

Abstract: A carton for containing ice cream has cover, top, rear, bottom and front panels and right and left end flaps on each of the cover, top, rear, bottom and front panels. The bottom panel end flaps are designed to be folded to seal the end of the carton such that the upper edges of those bottom panel end flaps contact lines of juncture between the top panel and the top panel end flaps. The bottom panel end flaps have a line of weakness adjacent the upper edge which permits bending of that flap when ice cream in the carton expands. The front panel end flaps overlie the bottom panel end flaps when the carton is sealed, but the upper edge of the front panel end flaps is below the line of weakness on the bottom panel end flaps so as not to interfere with the bowing of the bottom panel end flaps.

Abstract: A carton for packaging articles includes a generally rectangular top wall having a pair of spaced hand apertures formed therein. The hand apertures are disposed to define therebetween a handle strip for use in lifting the carton. The top wall is provided with a fold line extending from the region of each corner of the top wall toward the handle strip and further with a first severance line extending transversely of each fold line. Each first severance line is interposed between the handle strip and the respective fold line such that each fold line terminates at the respective severance line. This arrangement prevents stress concentration at the region of the handle strip when the carton is lifted.

Abstract: A tray/shroud shipping container which is convertible to a display container upon removal of the shroud. The container is preassembled before being filled with packaged goods from two separate blanks which are joined together to form the container. The container is made from a tray blank for forming the tray and a shroud blank for forming the shroud. The shroud telescopes within the tray and is releasably secured within the tray and covers and protects the packaged goods. The container includes two diagonally opposing vertical fold lines which comprise two substantially parallel lines of weakness. The lines of weakness of each pair are spaced apart by distances least as great as the thickness of the container so that the container can be folded along the lines of weakness thereby collapsing the container to a generally flat condition.

Abstract: There is provided a carton 11 for holding a number of articles 34. There is a bottom panel 12, two side walls 13, 14, end panels 17 and overlapping top panels 26, 28. The overlapping portions of panels 26, 28 are glued together and there is a cut-out portion 30 in the outer top panel 26. The cut-out portion 30 lies adjacent the overlapping portions and midway between the carton ends.

Abstract: A clamshell type container formed of a unitary blank of paperboard. The rear wall of the container includes a hinge line to permit opening and closing of the top cover. Buckling sometimes occurs at this hinge line upon cover opening. According to this invention four curved cut lines are provided in the common rear wall having the hinge line. The ends of these cut lines are pairwise contiguous and are spaced only slightly apart. The four pairs of contiguous cut line ends form the corners of an imaginary rectangle. Two opposite corners of the rectangle lie on the hinge line, while the remaining two opposite corners lie laterally of the hinge line on respective opposite sides thereof.

Abstract: The top wall of an article carrier is provided with at least one hand gripping aperture and a number of score lines are arranged to extend from an end of the hand gripping aperture outwardly in a converging path toward corners of the top wall. Diverging cut lines are formed at the outer end of the score lines and diverge from each other as cut lines one of which extends across the top wall and into the adjacent end wall and the other of which extends in the top wall and into the adjacent side wall. The arrangement of diverging score lines in association with converging cut lines constitutes an effective means of distributing the carrier load. By this means the caliber of board used in the formation of the carrier may be substantially reduced and economies thereby effected.

Abstract: A clamshell type carton is provided with a cut along the hinge score line connecting the upper cover and lower tray portions. A second cut is placed in the back panel of the carton, above or below the hinge score line cut, wherein the second cut is a continuous curve having a first end point located in the back panel and a second end point intersecting the cut along the hinge score line. The second cut is utilized to facilitate the easy opening and closing of the carton without buckling occurring in the back panel in the region of the hinge score line.

Abstract: An article carrier having bottom, top, side and end walls interconnected to form an enclosure of rectilinear configuration and having a pair of spaced apart hand hole openings formed in the top wall includes a reinforcing strip secured to the inner surface of the top wall and between the hand hole openings. End extensions which may or may not be adhered project from each end of the reinforcing strip and are folded into flat face contacting relation with the end walls respectively and are secured thereto. The fold lines between the end extensions and the cooperating end edges of the reinforcing strip are debossed so as to protrude inwardly and mate with a complementary embossed area which is encased by torque relief slits thereby reducing the tension along the outer surfaces of the fold lines between the top wall and the end walls so as effectively to strengthen the load bearing elements of the carrier top wall.

Abstract: A carrier containing a plurality of layers of articles arranged in stacked end-to-end fashion. The carrier is fully enclosed and includes side end panel flaps which extend substantially the entire distance from the top panel to the bottom panel of the carrier to strengthen the carrier and prevent bowing of the panels. Score lines in the side end panel flaps further prevent bowing during folding. The top panel is formed by overlapping top panel flaps, the inner top panel flap including a folded-under reinforcing flap which produces an area of triple thickness between handle openings in the flaps and which extends into the end panels for additional reinforcement purposes.

Abstract: A container for bulk materials, fluids and the like, comprising an enveloping member and an inner member which is connected to the enveloping member at at least four positions spaced along the circumference of the enveloping member, the arrangement being such that in filled condition a substantially block-shaped unit with substantially flat walls is obtained, the container further comprising a U-shaped stiffening member which comprises a web and two legs connecting thereto and is made of a material with a stiffness of its own, arranged so that the legs abut two opposite walls of the block-shaped unit and the web abuts the bottom wall of the block-shaped unit, the legs, at least in the areas adjacent their free upper edge, having a width corresponding substantially to that of the adjacent wall of the block-shaped unit and the U-shaped stiffening member being connected to the enveloping member at least in the areas referred to.

Abstract: A clamshell type carton is provided with a cut along the hinge score line connecting the upper cover and lower tray portions. Either a second cut in the back panel of the carton, above or below the hinge score line cut, or a cut-out slot encompassing the hinge score line cut, is utilized to facilitate the easy opening and closing of the carton without buckling occurring in the back panel in the region of the hinge score line.

Abstract: The invention is an integrated container structure in which a sealable envelope of flexible material such as plastic, has disposed within it a carton of semi-rigid material which is bonded to the interior of the envelope at one or more places. The carton consists of a sheet of carton material having appropriate fold lines and configuration to be erected or collapsed into a generally flat structure within the envelope. The invention is particularly useful for the shipment of animal products containing bones and has the advantages that it can be stored in a flat configuration and easily erected into an upright carton within the envelope by simple manipulative procedures.

Abstract: The purpose of the present invention is to prevent or minimize the damage to a carton caused by sudden impact. This damage results most often from the cartons being dropped from some height. The type of carton damage is usually corner fracture. The tensile forces applied to the corner as the carton hits causes a tear to form at the base of the vertical score line where the carton folds to make the bottom corner. A single score line is formed in and at the side of the side panels of a carton. Each score line extends outwardly from each side of the side vertical score lines which define the side panels of the carton. The purpose of these score lines is to induce a fold to form preferentially at the intersection of the score line and the vertical score line and away from the carton bottom corner when the carton is dropped or suddenly shocked. Each of the score lines should be long enough and placed a distance from the bottom wall to induce the fold line to form preferentially away from the bottom corner.

Abstract: A container having a number of walls of cardboard, fiberboard, plastic or other relatively stiff sheet material, joined along corner edges is made collapsible by providing one or more accordion folds transverse to the corner edges. Each accordion fold includes parallel crease lines on a common side of the walls, an intermediate crease line on an opposite side of the walls, and diagonally opposed areas of locally weakened stiffness in the wall material adjacent each intersection of the intermediate crease with the corner edges, such that portions of each accordion fold tend to overlap at the corner edges to facilitate bellowing action of the accordion fold.

Abstract: A paper container for containing liquid such as milk and juice is disclosed. The container is formed of a thick paper provided thereon with vertical and horizontal folding lines intersecting each other at right angles. The intersecting portions of the folding lines are such formed as to be different in configurations for a predetermined length. In this way, splits and pin holes can be prevented from occurring when the thick paper is folded along the grooves to build up a container.

Abstract: A hexagonal carton including four upstanding sidewall panels and two diagonally opposed corner panels. The entire carton is formed from a single blank. The corner panels include minor flaps hingedly foldably connected thereto which interact with minor flaps foldably hingedly connected to the adjoining sidewall panels to form a rigid interlocked cover panel which withstands lateral pressures exerted on the sidewall panels of the carton. Major flaps are foldably hingedly connected to two of the sidewall panels to form a cover panel to cover the interlocking minor flaps.