Abstract: A method and apparatus for folding the major flaps of cartons uses a folding rail having entry, transitional and exit sections which include vertical, curvilinear and horizontal surfaces, respectively, such that the transitional and exit sections are machined from a solid block of metal to have a curvilinear surface of a particular curvature developed from three-dimensional modelling on a computer aided design system in order to consistently square the cartons in a folding operation. The folding rails are positioned in a flap closure station such that a leading folding rail is mounted on a stationary mounting block and a trailing folding rail is mounted on a translatable folding rail in order for the folding rails to be moved closer together or farther apart to fold cartons of different widths.

Abstract: A method and device for simultaneously closing a first and adjacent second box having respective lateral openings, each closed by a pair of lateral tabs, which are folded one on top of the other by a first and second folding device on either side of the two boxes; the tabs being arranged, prior to folding, facing and parallel to one another, so as to define two inner tabs and two outer tabs; and each folding device moving along a respective path for folding the outer tab of the adjacent box and the inner tab of the other box.

Abstract: The present invention provides a method of forming a pre-wrapped gift package which appears to have been hand wrapped. The method includes forming a sheet of box construction material with decorative paper affixed thereto into a box tube by joining ends thereof. The box construction material is properly creased and provided with flaps so that a consumer may fold the flattened box tube into a box so that the end flaps form ends of the box and the decorative paper forms a pair of paper flaps which may be overlapped and taped. A flattened pull bow is provided to form a gift wrapping kit with the flattened box tube which may be distributed and displayed in a flat package.

Abstract: A one piece needle and suture holder is described in which a rounded channel is formed for retention of the suture. One end of the suture exits the channel toward the interior of the channel and is attached to a needle located in a needle holder in the interior of the channel. The channel is formed with an open side, to which are attached a plurality of hinged doors. After the suture is wound in the open channel, the doors are folded over the open side of the channel and are locked in place to retain the suture within the channel. In an alternative embodiment a paper cover is utilized to complete the enclosing channel. To afford ease of winding the suture the bottom of the channel is preforated for the application of a vacuum to the channel during suture winding. Also disclosed is a needle park for retaining the needle in the center of the package.

Abstract: Method and apparatus are provided for effecting sealing of a carton panel such as the top panel to a manufacturer's joint in such a fashion that carton erection from a pre-formed carton blank can proceed in an in-line manner without any changes in the direction of carton transport as it is erected, filled and sealed. Panel sealing is accomplished by folding the manufacturer's joint over a free end of the panel, applying an adhesive to the manufacturer's joint while it is in overlying relation with the panel, lifting the panel over the manufacturer's joint, and urging the panel into engagement with the manufacturer's joint so as to become bonded thereto. Top panel sealing in the foregoing manner proceeds without the necessity of using the carton contents as a mandrel against which the manufacturer's joint is otherwise ordinarily folded, thereby permitting the carton to be erected and sealed along its manufacturer's joint in the absence of product received within the carton.

Abstract: A leak resistant carton is formed from a cardboard blank by folding the blank to an open-ended carton. The carton is positioned on a core support member and a flexible sheet of closure material is placed over one of the open ends of the carton. A platen above the open end of the carton is actuated to fold and seal the edges of the sheet material over the sides of the carton to close the carton. The carton is then inverted on a conveyer and passed through a filling station, glue station and flap closure station. The carton is first filled and the side flaps are folded inwardly. A glue head assembly traverses the carton diagonally to apply a transverse bead of glue on the carton flaps. The remaining carton flaps are then folded inwardly to close the carton.

Abstract: A machine and a method for folding bottom flaps of a box after or in coordination with box loading where all of the activities take place along one axis. The arrangement of all elements along the axis provides improved accessibility to facilitate clearing and servicing the machine. Precise indexing moves the boxes with a smooth cycling transfer motion from station to station in the machine as product in the box is supported and the bottom flaps of the box are folded under the product.The folding of the box's bottom minor trailing flap is accomplished by a three piece mechanism which supports the product in the box and closes this flap.The in-line arrangement permits easy adjustment of the machine for different size boxes. Threaded rods which are connected by chains, chain sprockets, unit rate gear boxes, half rate gear boxes, and shafts which move relevant operating elements to easily adjust the machine's box guide dimensions.

Abstract: A method and apparatus is disclosed for closing the bottom end flaps of a reusable rectangular carton whereby the carton is disposed in an expanded position with the bottom end flaps biased outward with respect to the carton sidewalls. A sequence controller is programmed to release the bias and fold each bottom end flap in a predetermined sequence. A closure is effected by disposing at least two end flaps in locking relationship to each other.

Abstract: A method and apparatus is disclosed for closing the bottom end flaps of a reusable rectangular carton whereby the carton is disposed in an expanded position with the bottom end flaps biased outward with respect to the carton sidewalls. A sequence controller is programmed to release the bias and fold each bottom end flap in a predetermined sequence. A closure is effected by disposing at least two end flaps in locking relationship to each other.

Abstract: Method for forming, closing and fastening the flaps of a box, comprising the stages in which the internal flaps (5) are brought into their final position, glue (19) is deposited on fastening zones of the flaps (5, 6); the external flaps (6) are brought into their final position; when the glued fastening zones are in reciprocal contact, a force is exerted on the two pairs of flaps (5, 6) which is appropriate to stress them towards one another and to maintain the fixed contact between the reciprocal fastening zones for the period required for the appropriate setting of the glue, characterized in that the pair of external flaps (6) are locked in pivoting in their final position and the pair of internal flaps (5) are stressed, by suction, from the outside of the box (1), through the slot-shaped passage (20) limited by the two opposite free edges (11) of the pair of external flaps (6).

Abstract: An apparatus for folding and filling a plurality of cartons erected from a plurality of collapsed carton tubes includes an end flap alignment device attached to the conveying and folding mechanism of the apparatus. The end flap alignment device folds one of the bottom end flaps of the collapsed carton tube inwardly and in the same motion folds the top end flap which is also provided on the bottom of the carton tube outwardly so that the bottom end flap and the top end flap are aligned in the same plane. The end flap alignment device comprises a generally U-shaped fork comprising a base attached to a plate and two rods each connected at one end thereof to the base. The plate is attached to a reciprocable slide of the apparatus by a pivot rod. One end of the pivot rod is connected to a cam, which rides in a cam track. As the slide is reciprocated, the plate, including fork, is pivoted about the pivot rod.

Abstract: A method and apparatus for unclosing and enclosing the flaps of a package carton, so that cartons can be transported along the transportation path without shifting backward or shifting away from the transportation path.

Abstract: A method of constraining a product while packaging and an apparatus to carry out the method. The product is positioned in a constraint cage having constraining fingers or plates on all four sides of the product in a first position. The constraint cage is then moved from the first position to a second position where packaging is performed by lowering a case over the product while the product is continuously constrained by either the cage or the case or both. Thereafter, the case is conveyed with the enclosed product while closing the major and minor flaps of the case.

Abstract: A packaging machine for cardboard boxes and a process for packaging articles in the cardboard boxes in which an insert (15) is placed into at least one side of an open cardboard shell (10). Insert units (16, 17), disposed on both sides of a moving track for the cardboard shell (10), each have an insert transmitter (19) which removes insert (15) successively from a magazine (18) and swivels the insert (15) to an upright position. The insert-transmitter (19) is moved synchronously with the packaging machine by an operating rod (22), having two double-armed levers (23, 24).

Abstract: A flat top, thermoplastic coated, paperboard container including a separate cover member and a membrane-type seal, with corner gussets for providing (1) a liquid tight corner construction and (2) top strength and rigitidy for convenient commercial distribution and consumer use. The cover member serves only to protects the membrane, and need only be minimally tack-sealed to the structure to withstand transportation stresses.

Abstract: A carton blank and a method for folding and gluing it into a reclosable carton. Corner post flaps are releasably adhered to front end flaps to permit release of the corner post flaps from the front end flaps when the top of the top opening container is initially raised to provide access to the contents.

Abstract: A wrapper for tabular products, especially chocolate bars. The wrapper consists of a one-piece blank wrapped asymmetrically around the bar to create a facing and of a tube of wrapping material established by a longitudinal sealing seam adjacent to one side of the bar and closed at the ends of the bar by a bellows. The bellows encompasses the longitudinal sealing seam as part of the tube of wrapping material and is wrapped around onto the lower surface of the bar to create an inner flap. The facing covers up areas of the bellows and is secured to the portion of the tube of wrapping material adjacent to the lower surface of the bar. The blank (7) is rectangular. The facing (25) is created by folding in the inner flaps (24) in such a way that both the facing and the inner flap are free of any part of the longitudinal sealing seam (11). The bellows is bridged by a transverse sealing seam (21) located in one area of the bellows that is wrapped against the lower surface (3) of the bar (1) and covered by the facing.

Abstract: A method and apparatus for sealing cartons by sticking together facing surfaces of a hinged flap and a wall of each carton by means of a solvent-based, preferably water-based, adhesive, in which the cartons are continuously moved along a line past an adhesive applicator which applies a deposit of adhesive to the under surface of the flap, first pressure rollers arranged to bring the flap surface temporarily into contact with the side wall to transfer some of the adhesive to it and to thin out and spread the adhesive on the flap, a hot air nozzle which enters within the acute angle formed between the two surfaces when the flap is released from the first pressure rollers and which directs hot air onto the surfaces to effect partial drying of the adhesive, and a second set of pressure rollers to press the flap against the side wall to effect final sealing.

Abstract: A method of heat activating the interior surfaces of the top closure, fin forming panels of a paperboard carton of the type shown in U.S. Pat. No. 4,732,275 to thereby render their PE coating tacky prior to folding the panels to form the carton top closure. The geometry of the two fin forming panels is such that their interior surfaces require a U-shaped heating pattern, as opposed to heating their entire areas. This U pattern is achieved by a specific hot air jet arrangement on an otherwise conventional nozzle block and by moving the nozzle towards and away from the carton as the carton moves past the nozzle block. The method also includes heating by a second nozzle block, to increase the rate of production of closed cartons. The fin forming panels of the cartons may also be preheated.

Abstract: A fluid packaging means comprises tubular side walls and end walls disposed at the ends thereof, forming a bottom and a top, wherein the top comprises thermoplastic material without a carrier material, is injection moulded to the outer edge of the tube along that edge and has a pouring means, and the bottom is quadrangular and has triangular flaps which are folded over to lie against at least one adjacent panel. In order to provide such a packaging means with a particularly advantageous bottom, the invention proposes that at least two mutually oppositely disposed triangular flaps of the bottom are folded inwardly into the plane of the bottom or outwardly on to the side wall, about the lower edge between the bottom and the side wall, and fixed in that position.

Abstract: An improved package machine includes a vertically adjustable compression belt for maintaining the top of a carton flat while forces which might cause the top to bow upwardly are being exerted on the end flaps to hold them in contact until an adhesive takes hold.

Abstract: A method and apparatus for rapidly bonding two surfaces which are associated with paper elements and corrugated paper elements. A heater plate is utilized to raise the temperature of one of the surfaces while a water based adhesive is applied to the other of said surfaces, which other surface remains at ambient temperature. The heated and ambient surfaces are subsequently contacted and pressure is applied between the surfaces until the bonding is complete.

Abstract: A box-shaped carton, for packaging ice cream or like frozen, initially liquid or semi-solid material which has a skirted cover and inturned lips on the front panel and front panel end flaps, which is formed by folding in the panel and flaps having a lip, and a resealing film arranged to either underlie or overlie the lips having enhanced protective properties for the contents, is disclosed.

Abstract: Disclosed is a flexible substrate assembly including an elongated flexible substrate having a plurality of spaced apart component receiving regions, with a solid component disposed on each of said regions. A plurality of flexible strap members are disposed adjacent each component receiving region on one side thereof, and are joined to the other side of the region such that the strap overlies the region to form a tube-like passageway for receiving and containing a solid component. Several embodiments of the invention include different configurations of strap members are punched out from the flexible substrate so as to form a flap-like member having a free end, which is joined to the substrate so as to form a tube-like passageway. Also disclosed are methods for fabricating the substrate assembly and dispensing solid components contained in the substrate assemblies. Also, packaging arrangements and apparatus to produce packaging arrangements including the flexible substrate assemblies are also disclosed.

Abstract: Container flap folding apparatus and method in which closable flap containers having outwardly and downwardly prefolded front and back end top flaps are conveyed along a path, a puller at a lower position in the path contacts an oncoming container front end below the outer free edge of its front flap and is displaced to an upper position above yet adjacent the container top portion to pull upwardly and urge relatively rearwardly and fold inwardly and downwardly such flap across the top portion, a pusher upstream of the puller and at a lower position out of the path is generally simultaneously displaced into the path to an upper position above yet adjacent the container top portion to push upwardly and forwardly the back flap to locate its outer free edge relatively forwardly of the container back end, a directing mechanism, including a forwardly downwardly inclined moving belt, cooperating with the pusher forwardly directs the so pushed back flap inwardly and downwardly to fold it across the top portion, and

Abstract: In a carton erecting, loading and sealing machine for packaging a plurality of articles in a sleeve type carton, the gluing and sealing station of the machine is provided with a pair of upper folding plates and a pair of lower folding plates on either side of the carton conveyor for folding the upper and lower end panels of the cartons against the dust flaps of the cartons after glue has been applied to seal the cartons. Each folding plate is mounted through rotatable mountings to a pair of cranks which move the folding plates downstream as the plates fold and seal the end panels to the dust flaps.

Abstract: A can carton of the end loading type includes foldably joined top, bottom and side walls forming a tubular structure, an end flap foldably joined to the end edges of the top, bottom and side walls, collapsible web structure disposed at each corner of the carton and foldably joined to the adjacent end of each of the adjacent end flaps which are foldably joined to the bottom and top walls and to the bevelled end edges of a projecting end portion of each side wall, the web structure being disposed in collapsed condition adjacent the end of the adjacent can, and a fold line interconnecting the projecting end portions of each of the side walls to facilitate manipulating the end closing structure of the carton to closed position after loading is completed, such manipulation comprising folding each projecting end portion of each side wall outwardly to draw the end flaps of the top and bottom walls inwardly and then folding the end flap at each end of each side wall upwardly thereby to collapse the web structure and

Abstract: For filling and closing cartons, the latter are filled via the open bottom and then conveyed along an angular transport track. Fixed folding means for folding inner tabs (15 to 18) and outer tabs (19 to 22) solely as a result of the relative movement of the carton are located in the region of two conveying stages (42, 62). In the region of the second conveying stage (62), the carton has a relative position which has turned through 180.degree..

Abstract: A wrap-around packaging method wherein a package blank is prefolded to an open-sided configuration, an object to be packaged is positioned within the prefolded blank and the final folding and adhesive closing of the package is then completed in a series of synchronized steps. The prefolding occurs during the course of withdrawal of the package blank from a magazine and its transporting into position to receive the object to be packaged and includes plural folding steps which are individually performed to minimize stress on the packing material. The movement of the preformed packing material blank and object through the final folding and closing stations is accomplished without contact between the conveying means and the object.

Abstract: Placing a lay-flat container body into a lay-flat container lid, opening the container, closing the top closure panels and leaving the bottom closure panels open, thereafter placing a product into the container, raising the container body until the bottom closure panels clear the product, closing the inner bottom closure panels, placing adhesive on the bottom panels, closing the outer bottom closure panels, adhering the bottom closure flaps to each other and vibrating the container to force the container body down into the container lid. The apparatus has a filler, a pair of clamps that grasp and lift the container body upwardly, plows that fold the closure panels into place, glue heads that place adhesive on the closure panels and tilting weights and a vibrating table to seal the closure panels and force the container body back into the container lid.

Abstract: A package blank is made from a single sheet having at least surface layers of heat-sealable material. The blank sheet comprises first and second rectangular panels foldably formed on opposite sides of a backstrip. The first and second panels have first and second pairs of foldable side flaps, respectively, extending from their opposite sides, and the backstrip has a pair of foldable back flaps extending from its opposite ends. The first side flap pair and the back flap pair have sloping edges located adjacent each other for forming at least partly overlapping seams when the blank is folded up into a generally boxlike, open-front package. The overlapping seams serve to prevent the intrusion into the package of heated air used for fusing the second side flap pair onto the first side flap pair and the back flap pair.

Abstract: Apparatus for sealing the foldable flaps of cartons of random sizes by applying a self-adhesive tape material along the edges of the flaps having improved assemblies for automatically infolding the trailing minor flaps and for controlling the positioning of the flap folding assembly at or above the upper edge of the carton. The assembly for infolding the trailing minor flap includes a kicker arm assembly which incorporates a kicker arm member mounted for sliding longitudinally along a generally horizontal axis between an extended position and a retracted position. The assembly for controlling the positioning of the flap folding assembly includes a brake assembly for selectively retaining the flap folding assembly in a fixed position, a control means for controlling the brake assembly and an actuator assembly for activating the control means.

Abstract: A method for the handling of unstuffed envelopes which facilitates the subsequent handling of the envelopes stuffed as pre-sorted mail. The unstuffed envelopes are packed into a telescopic carton assembly, which includes first and second cartons having movable flap assemblies that are positioned within the interior of the respective cartons and are movable to positions outside of the respective cartons to convert the cartons into two self-contained containers. The telescopic carton assembly is separated by the mail sender into two cartons and the new unstuffed envelopes are removed therefrom. The movable flap assemblies of the two cartons are moved to positions outside of the interiors of the cartons. The envelopes are stuffed with pre-sorted mail and packed into the two cartons. The movable flap assemblies of the cartons are positioned so as to define the tops of self-contained shipping containers housing the stuffed envelopes for mailing and shipment of the pre-sorted mail.

Abstract: An improved method of gluing a package in an in-line packaging machine. The package is of the type having a plurality of leading and trailing end flaps which are glued to be together during the packaging process. The novel method comprises in part providing at least two glue nozzles in the line of the packaging machine direction with one glue nozzle facing downwardly and upstream while the other glue nozzle faces downwardly and downstream so that the glue is applied to a pair of the end flaps by one nozzle in an upwardly direction and by the other nozzle in a downwardly direction as the package is moved through the packaging machine past the glue nozzles. Subsequently thereafter, the other pair of end flaps are turned inwardly and are held in position after being glued until the glue sets. The four flaps of the package are turned inwardly by a first and a second flap closing means.

Abstract: A method of forming, filling and hermetically sealing a container in which a thermoplastic lid is hermetically sealed to a paperboard container body while the container body is in an upside down orientation, with the container then being filled through the opposite upper end while the container is still in the upside down orientation, and with the filled container then being closed by means of flaps at the opposite end.

Abstract: An apparatus and method for prebreaking relatively short upstanding flanges formed on the upper edges of a carton including a conveyor system for transporting the cartons and a pair of prebreaking idler rollers engaging the flanges. The prebreaking rollers include a grooved trap for engaging the upper edge of the flanges and side rails are provided to assure against buckling the flanges or the side walls of the carton. A pair of driven rollers aligned with the prebreaking rollers and timed with the passage of the end flanges complete folding of the flanges. The trailing edge of a notch formed in each of the driven rollers folds the trailing end flange.

Abstract: A hinged lid packet has an integral inner frame comprising a recessed panel extending upwardly from the front wall of the body of the packet, and a pair of side flaps extending backwards from the sides of the recessed panel. A cut-away part is formed at the top of each side flap to provide access for securing each outer flap of the lid of the packet to the respective inner flap. Each inner flap may be of a shape corresponding to the cut-away part, so that with the lid closed the inner flap and the respective side flap are substantially contiguous.

Abstract: For the fabrication of a bag-in-box (BIB) package, there is first provided a semifinished, collapsed BIB package wherein a flattened bag is placed within a collapsed box and secured to at least one of its inside surfaces by means of an adhesive. After erecting the package, the bag is inflated into close internal contact with the box by introducing a gas under pressure through a fitment attached to the bag and projecting outwardly of the box. The opposite ends of the box are closed with sets of foldable end flaps, with the aid of an adhesive. Preferably, the bag is further secured to the inside surfaces of a pair of opposed ones of the four bottom end flaps of the box. The opposed pair of bottom flaps are held folded out during the introduction of the pressurized gas into the bag, in order that the bottom end portion of the inflated bag may make neat contact with the inside surfaces of the box. There is also disclosed herein an apparatus for thus fabricating the BIB package.

Abstract: A carton for packaging semi-fluid material is formed from specially constructed integral carton blank and a special process for assembling the same. The blank has a front panel, a bottom panel, a rear panel, a cover panel, and a front cover sealing flap articulated one to the other in the order named, with end-forming flaps and glue-flap extensions extending laterally therefrom adapted to be glued together to form inner and outer walls and side-cover flaps. The bottom outer wall-forming flap is glued to the inner wall-forming flaps by glue strips along the side edges of the latter, where they are joined to the front and rear panels, and the side-cover flap has a tuck-in tab adapted to be tucked in under the bottom outer wall-forming flap between the glue strips. The glue-flap extensions fold over the side-cover flaps and are glued thereto by an extension of the glue strip adjacent the front carton front.

Abstract: A one-piece blank forms a liquid-tight carton having plural rectangular side walls sealed or integral with one another at adjoining side edges and flat end panels of polygonal shape, the carton facilitating ultrasonic sealing of the end walls to the sidewalls through a unique set of sealing tabs on the side and end walls. The process and equipment for sealing the end walls to the side walls permits ultrasonic heating and sealing after the carton is full of liquid through a compression of the sealing tabs of these walls between facing dies which are diagonally aligned in relationship to the side and end walls. The carton formed by this blank facilitates nesting of multiple cartons, one above the other.

Abstract: Cardboard packing cases, which have been loaded with bottles or the like, are fed to apparatus for severing the top flap connecting tabs at diagonally opposite corners of the case. These tabs are provided to hold the top flaps of the case in place during loading, but must be severed prior to closing and/or gluing of the top flaps at a succeeding stage in the packaging of the product. The apparatus includes an infeed station where the cases are separated, by slowing each case on a flight bar conveyor having its flights spaced less than the length of the case, and side belts accelerate the case to match the speed of a pocket chain conveyor. The case has its forward end lifted, and opposite corners tilted, on this pocket chain conveyor to spread the top flaps at the two corners of the case without connecting tabs. Guide plates on either side of the pocket chain conveyor serve to guide the case so that fixed knives cut both tabs without necessity for turning the case through 90 degrees.

Abstract: Apparatus for automatically folding the end closure of a carton of rectangular cross section which includes a cover panel hinged to a rear sidewall of the carton and a pair of flanking gusset panels which are each respectively hinged to one edge of the cover panel and to an adjacent sidewall. The carton is continuously moved along a conveyor path with one of the gusset panels leading and the other trailing. A folding head moves along a parallel conveyor path and translates to a location adjacent the carton. An abutment adjacent the conveyor path contacts the leading gusset panel and folds it inward along a line at about a 45.degree. angle to its hinged edges. An arm mounted on the folding head is caused to swing relative to the conveyor to fold the trailing gusset panel inward along a line at about a 45.degree. angle to its hinged edges.

Abstract: A method of forming a heat-sealable carton having a pair of mating surfaces to be sealed includes the steps of coating at least one of the carton surfaces with a heat-activated thermosetting adhesive, spraying a fine mist of a water-based adhesive which exhibits high contact tackiness when dry, to form a discontinuous film on the coated surface, heating the water-based adhesive coated surface to a temperature sufficient to dry the water-based adhesive and activate the thermosetting adhesive, placing the mating carton surfaces in contact with each other and applying pressure for a time sufficient to seal the contacting surfaces together. A carton formed by the method is provided with flaps sealed by the combination of thermosetting heat-activated adhesive and high tack water-based adhesive. This allows the mating surfaces to be rapidly sealed by automatic carton closing apparatus and results in a sealed carton which exhibits good seal integrity at high temperatures.

Abstract: Apparatus and method for closing and sealing lined taper top cartons wherein the cartons are advanced in a path of travel with their liner mouths open, the end walls of said carton and the opposite ends of the liner being simultaneously deflected inwardly and the front and rear carton walls and the opposite sides of the liner mouth concurrently displaced toward each other to juxtapose the upper edges of the front and rear walls with the liner mouth flattened therebetween, the flattened liner mouth then folded upon itself to form a double thickness mouth, the folded liner mouth and an end closure flap hinged to the carton rear wall then being simultaneously folded over the upper edge of the carton front wall and the folded closure flap secured to the front wall of the carton.

Abstract: Apparatus for automatically outfolding the leading and trailing gusset panels of the end closure of a rectangular carton being moved along a predetermined path on a continuous conveyor. First and second arms are attached to a vertical shaft and to a sleeve mounted for independent rotation about the shaft. The shaft and sleeve rotate in opposite directions so that one arm contacts the leading gusset panel and folds it outward along a line at an angle to its hinged edges and the other arm subsequently contacts the trailing gusset panel and similarly folds it outward. A plow positioned adjacent the conveyor path begins to plow the major end closure panel toward the carton opening while the rotating arm is in contact with the leading gusset panel.

Abstract: A receptacle is formed from an appropriately scored blank by mechanical folding and set-up prior to its being filled, and for mechanical closure of the self-contained cover members after the filling of the receptacle.