Abstract: A paperboard laminate carbon for containing a liquid product. The innermost and outermost surfaces of the carton are coated with a polymer which is both liquid impermeable and heat sealable. One of the walls of the carton includes an aperture which is fitted with an improved one-piece plastic spout. The spout, prior to installation, includes one preformed flange which contacts one surface of the carton about an aperture in the carton wall. A truncated skirt having a maximum cross-section small enough to pass through the aperture in the carton wall without damaging either the skirt or the carton wall extends from one surface of the preformed flange. A second flange is formed from the truncated skirt after the skirt has been inserted through the aperture in the carton wall.Spout configurations which may be inserted from the exterior or the interior of the carton are disclosed.

Abstract: Improved liquid containers are provided characterized by at least one raised sealing score formed in the blank such that when assembled, the raised portion of the sealing score substantially abuts the free edge of a side seam and/or bottom panel, respectively, thereby eliminating liquid seepage from said container.

Abstract: A carton leading and trailing end panel folding mechanism for use with a tubular carton blank mounted on a mandrel, with the end closure panels extended beyond the face of the mandrel. The main folding mechanism is a single freely rotatable roller which serves to first fold the leading panel rearwardly as the latter rotates therepast, and then to engage and fold the trailing panel forwardly as it rotates therepast. The roller may be stationary until contacted by the leading panel.

Abstract: A tray forming machine comprising an infeed station for accepting a blank of corrugated plastic, and a transfer mechanism which automatically conveys the blank along a plane into a blank receiving station between a tray forming ram and a forming tool frame. The tray forming ram moves downward along a vertical path carrying the blank through the forming tool frame, during which the blank is folded into a generally upright tray configuration by a series of vertically displaced side and end forming bars and brackets. The tray forming ram and blank emerge from the forming tool frame and are received in a clamping and welding assembly which holds the blank in position while it is secured by sonic welds into the upright tray. The clamping assembly releases while the tray forming ram returns to its raised position, and the tray is stripped off the tray forming ram by the bottom of the forming brackets.

Abstract: An apparatus for producing container jackets from blanks comprises a winding core around which a blank is wound in a manner forming an overlapped area. A pressing element is arranged to engage and press the overlapped area. An actuating mechanism urges the pressing element against the overlapped area to apply a pattern of radial pressing forces along the length of the overlapped area. The actuating mechanism is able to longitudinally shift the pressing force pattern along the overlapped area to adapt the apparatus to the pressing of different types of jackets, such as jackets of different lengths.

Abstract: A liquid-containing paperboard laminate carton including a one-piece plastic spout having a pair of opposing flanges sealed about an aperture in one of the carton walls to both the innermost and outermost surfaces of the carton wall. The double flange configuration not only forms a mechanically positive interlock between the plastic spout and the carton wall, but even more importantly, isolates the cut edges of the aperture from exposure to liquid either from within the container or from the environment through which the carton must pass from the point of manufacture until it is ready for disposal after its contents have been consumed. The spout preferably includes a liquid passageway having a membrane-type seal across its discharge orifice to provide evidence of tampering and a resealable closure member such as a screw cap or a snap-on closure held in place by means of a mating ring or groove on the spout.

Abstract: A spouted, gable-topped carton has its top closure fin sealed by welding employing an ultrasonic horn and an anvil giving a suitable profile of contour sealing of the fin. There is a straight continuous lengthwise seal where the fin is two-ply and a meandering continuous lengthwise seal where it is four-ply, while the sealed portions of the four-ply spout part of the fin are of lesser total extent in proportion to the area of that spout part than are the sealed portions of the other four-ply part of the fin in proportion to its area.

Abstract: A sealed container and method for manufacturing the same is disclosed in which the sealed container has a waterproof container barrel body made of paper and having opposing open ends, and a pair of closure members, one for each end, with each closure member cooperatively engageable with an end of the barrel body to form a hermetically sealed container. Each closure member includes a panel to generally cover each open end, a peripheral wall portion extending downward from the periphery of the panel and generally perpendicular thereto, a covering member is provided for covering an end surface of the container barrel body, and a reinforcing member adhered to a peripheral surface of an opening portion of the container barrel body. The peripheral wall portion of the closure member is mounted on the container barrel body and adhered thereto at a position corresponding to the adhered position of the reinforcing member.

Abstract: A packaging machine for preparing sealed containers filled with contents each from a blank having a thermoplastic synthetic resin layer over each surface thereof. The container is recessed in the central portion of its bottom so as to seat stably. A bottom forming end portion of the blank fitted around a mandrel is folded flat and then pressed against the forward end surface of the mandrel by a press member with its press face to form the bottom of the container. The mandrel end surface defines a cavity for recessing the bottom central portion, and a projection complementary to the cavity is provided on the press face of the press member.

Abstract: A laminated web is composed of a paper substrate having a layer of oriented polyethylene terephthalate film bonded to one surface and a layer of polyolefinic resin covering its second surface. The film presents an exposed surface having the known property of being heat sealable to itself, but is not heat sealable to polyolefinic resins. The web can be used successfully in the production of end products, such as containers, that include seams produced by employing flame heat sealing techniques. Flame activation of the sealed surfaces permits heat sealing of opposite surfaces of the web to one another without use of an adhesive. Containers produced by the use of this laminate evidence high retention of volatile materials and flavor oils commonly lost during storage of food products within containers made from paper laminates.

Abstract: An apparatus for processing baglike container blanks by fitting the blank around a pair of forming plates arranged at a distance from each other in parallel, folding a pair of triangular ears flat while projecting the ears sidewise from the portion of the blank to be made into the bottom of a finished rectangular parallelepipidal container, and press-bonding the projected ears to outer surface portions of the trunk of the container at the lateral sides thereof after folding the ears over the outer surface portions. The apparatus includes a device for press-bonding the triangular ears, which comprises a pair of press members and a support member positionable therebetween. Each lateral side trunk portion and each ear folded thereover are clamped between the support member and the press member respectively from inside and outside the blank.

Abstract: A packaging machine including a rotor having a plurality of radial mandrels each for carrying a container as fitted therearound and intermittently drivingly rotatable so that the mandrels successively stop at processing stations equal in number to the number of the mandrels, a container bottom breaker provided at one of the processing stations, and a container holding device provided at the same processing station as the container bottom breaker and having at least one container pressing member to be pressed against the mandrel at rest at said same processing station over the container fitted around the mandrel.

Abstract: Apparatus for forming a denesting lip in paperboard containers by folding, heating, and sealing or tacking a side extension flap to form a denesting lip for nested stacks of such containers. The denesting apparatus includes a pair of pressure pads which guide the paperboard container onto the apparatus and prevent the container from sliding off the apparatus while the denesting operation is performed. The apparatus also includes a multiplanar mandrel pad for forming a bottom closure that is flat on its exterior surface.

Abstract: A sealed container and method for manufacturing the same is disclosed in which the sealed container has a waterproof container barrel body made of paper and having opposing open ends, and a pair of closure members, one for each end, with each closure member cooperatively engageable with an end of the barrel body to form a hermetically sealed container. Each closure member includes a panel to generally cover each open end, a peripheral wall portion extending downward from the periphery of the panel and generally perpendicular thereto, a covering member is provided for covering an end surface of the container barrel body, and a reinforcing member adhered to a peripheral surface of an opening portion of the container barrel body. The peripheral wall portion of the closure member is mounted on the container barrel body and adhered thereto at a position corresponding to the adhered position of the reinforcing member.

Abstract: A container for storing a product and for holding it while it is heated in a microwave or a conventional oven. The container includes a tray-like box portion that is adherently sealed and secured inside a leakproof cover. A panel of the tray-like box has a tear-open access flap which may be tightly reclosed after being torn open and which is held in place by an interference fit between two spaced apart shoulders defined along a fold line where the access flap is joined to a reclosure tab. The panel of the tray-like box is imprinted with the instructions for heating the product enclosed within the container, while the cover is imprinted with graphics. The container is turned over during the heating process, so the instructions are visible to the consumer. Tight reclosure of the access flap tends to retain steam inside the container during the heating process thereby reducing the cooking time and retaining moisture in the product.

Abstract: A carton blank and method for forming a liquid-tight tapered container having a denesting tab. When the blank is folded and sealed to form an open-topped tapered container, a destacking tab is formed as a result of abhesion. The tab facilitates destacking a single container from a stack of like containers prior to their filling and final closure.

Abstract: This invention relates to containers and methods of, and apparatus for, manufacturing containers. A container in accordance with the invention includes four walls (202-205, FIG. 1, or 301-303 and 305, FIG. 4), and a base (201, FIG. 1, or 306, FIG. 4). The base is constituted by two flaps (206 and 207 or 307 and 308) arranged so that they can be moved between a first position in which the container can be folded flat, and a second position in which they hold the four walls in a generally rectangular formation.The container may be manufactured by sealing six boards (4, 5 and 6) between two webs of PVC material drawn from supply rolls (50 and 51). The sealing is carried out by means of a welding process which also forms the boards (4 and 5) into hinged pairs. In further welding processes, boards (6) are hingedly connected to the boards (4 and 5). Finally, two pairs of boards (4 and 5) are hingedly connected together to form the four walls of the container. In the welding process, a raised portion (123, FIG.

Abstract: A two-ply, book-style album (10) comprises an inside tray sheet (12) and an outside cover sheet (14). Sheets (12 and 14) are preferably formed of high-density polyethylene, and are thermally heat-sealed together by means of a peripheral seal (34) and spine rules (36). The spine rules (36) include longitudinal grooves (38) formed to a substantial depth into the front surface of the inside tray sheet (12) in order to define living hinges which provide a roundish, less square spine of more pleasing appearance.

Abstract: The flexible disk envelope is formed from a flexible plastic prepunched blank having two connected sections. One section of the blank has side flaps extending from the opposite side edges. The blank is folded about an end of a mandrel so that the side flaps extend beyond the side edges of the mandrel. The mandrel holds the plastic blank section having the flaps extending therefrom against the bottom surface of a plate. The mandrel has raised edge portions running along the side edges on the outward facing surface thereof. The side flaps are folded around the adjacent edge of the mandrel in an outward folding direction by folding blades which are driven about pivot means to guide the folding blades in an arcuate path.

Abstract: Portable sealing apparatus for the sealing of plastic coated paperboard cartons includes a frame and a fixed jaw mounted thereto. A single movable jaw is utilized to seal top portions of the carton by fusing of a polyethylene coating thereon. Guide means enable manual placement of the carton with the sealable portions thereon disposed between the fixed and movable jaw. Proper selection of pressure, time and controlled heating of the jaws enables the carton to remain adjacent the fixed jaw before, during and after the sealing thereof, without subsequent remelting of the polyethylene coating and opening of the seal for a period of time.

Abstract: Apparatus for sealing deformable sheet material blanks comprises ultrasonic energy means having a sonotrode mounted for relative movement toward and away from an anvil surface carrying projections thereon. The anvil projections enable maximizing sonic energy from the sonotrode to form rapid and efficient seals in carton blanks. The carton blanks preferably carry a varnish having thermoplastic solvents in a liquid vehicle with the solids being present in sufficient amount to form a thermoplastic seal when processed in the ultrasonic apparatus. The method of forming the carton blanks utilizes printing techniques to apply the varnish and preferably the novel ultrasonic apparatus to enable rapid seals with minimized requirement for ultrasonic energy application due to compressing of sheet material at the seals to be formed.

Abstract: A gable-topped carton blank is cut from paperboard coated on both faces with thermoplastics. In the top closure, a loop of sub-panels provides a sealing fin. Each of two opposite sub-panels is folded inwardly upon itself and one is opened-out in forming a pouring spout. To reduce the tendency for the internal surface middle zone of this sub-panel to adhere to the internal surfaces of two other upper sub-panels during heat-sealing, these latter surfaces are formed in the blank with embossed recesses corresponding somewhat in position with recesses in sealing jaws.

Abstract: The present invention relates to a method for mounting a faucet on a paper container which is used as a container for milk or the like. That is, the method comprises the steps of heating the adhesive portions of the paper container coated with a thermoplastic resin and the faucet made of a synthetic resin, and pressing both the adhesive portions against each other in the heated condition to cause them to adhere to each other. An apparatus for carrying out this method is provided with retaining mechanisms which hold the paper container and the faucet, respectively, and a heater for heating the paper container and the faucet that are held in the respective mechanisms, whereby, after the heating by the heater, the paper container and the faucet are caused to approach together and are pressed against each other.

Abstract: A cap heat-sealing apparatus for paper containers comprises a vertically movable head, a fixed pressing member provided on the bottom surface of the head, a pair of divided movable pressing members arranged around the fixed pressing member and connected to the head so as to be horizontally movable toward or away from the fixed pressing member, and a heating high-frequency coil attached to the head and surrounding the fixed pressing member. The fixed pressing member has an outer periphery shaped to position along the inner surfaces of heat-sealing container opening edge fitting portions of inverted V-shaped cross section formed at the outer periphery of a square paper cap, which has an aluminum foil layer. The movable pressing members have an inner periphery shaped to position along the outer surfaces of the fitting portions. The high-frequency coil is spaced apart from the fixed pressing member by a clearance for the fitting portions to enter.

Abstract: A method for producing two-piece paper containers having waterproofness, water repellency, permeability and good stiffness without using any adhesive. A container body wall member and a container bottom panel member are blanked out from a base paper made from a stock containing about 10 to about 80% by weight of high-density polyethylene synthetic pulp. The blanked members are fabricated into a container using a conventional cup-making machine without using any adhesive. Then, the so-fabricated containers are heated at a temperature between about 120.degree. C. and about 300.degree. C. for a short period of time.

Abstract: A paper cup of surface-protected paperboard and an apparatus for making the same, with the paper cup including a wound cup wall and a cup bottom inserted therein. Ends of a wall blank forming the cup wall are overlapped after a winding of the wall blank, and an inner cutting edge is covered by a protective strip welded together with the cup wall. The protective strip is fashioned as a sealing strip in flat contact with the inner surface of the cup wall and is welded to the cup wall on both sides of the overlapping point. The apparatus includes a winding station wherein the wall blank is wrapped onto a winding mandrel and is welded together at the overlapping zone in a subsequent welding station. With further devices being provided for inserting a cup bottom in the thus manufactured cup wall. A positioning device for the sealing strip is associated with the winding mandrel with the positioning device lying in front or preceding the winding station.

Abstract: Presented is a method and apparatus for the substantial automatic folding of flat pre-cut blanks of sheet material to form storage envelopes for floppy or rigid disc storage devices. The machine includes a pedestal formed in part by an electromagnet associated with a clamp plate that constitutes an Armature to retain the sheet material immovable during the folding operation. Additionally, there are provided three rams each associated with a pivotal shoe for folding selected portions of the flat sheet, and reciprocable glue dispensing means are provided for dispensing glue at the appropriate time, in an appropriate amount, and in an appropriate location. The mechanical aspects of the apparatus are connected to and controlled by a computer that scans the functions of the machine to determine if the machine is operating properly and signals the operator through an alphanumeric display panel if there is a malfunction in the apparatus.

Abstract: A multi-piece, tub shaped paperboard container having a circular opening in the top thereof is provided with a multi-piece, reinforced rim coated with a layer of meltable plastic and is assembled by appying heat to overlapping seams in order to melt the plastic coating and thereby seal the seams. Heat is applied evenly around the entire periphery of the rim by a 2-piece, annularly shaped, heated collar which may be selectively shifted into conforming engagement with the container. The even application of heat around the entire periphery of the rim equalizes the surface tension of the plastic coating during melting thereof to avoid deformation of the rim during the heat sealing process.

Abstract: A multi-piece, tub shaped paperboard container having a circular opening in the top thereof is provided with a multi-piece, reinforced rim coated with a layer of meltable plastic and is assembled by applying heat to overlapping seams in order to melt the plastic coating and thereby seal the seams. Heat is applied evenly around the entire periphery of the rim by a 2-piece, annularly shaped, heated collar which may be selectively shifted into conforming engagement with the container. The even application of heat around the entire periphery of the rim equalizes the surface tension of the plastic coating during melting thereof to avoid deformation of the rim during the heat sealing process.

Abstract: A method and apparatus for closing and sealing the end of a container having a tubular body wherein the container and closure portion includes front, rear and side panels each extending axially from the tubular body in the open position of the end closure. Each of the end closure panels may have a sealing strip defined at its outer end by a scored line with the rear panel including a closure flap-extending from the outer edge of its sealing strip. The end closure panels are folded to a flat closed position by closing jaws with the sealing strips and closure flap projecting axially from the tubular body, after which the sealing strips are sonically welded together. The closure flap and sealing strips are then folded flat, and the closure flap is welded to the outer surface of the front end closure panel.

Abstract: An apparatus for forming a sprue and a communication hole in a vacuum-sealed mould. This method includes steps of: laying a shield film over a pattern and a sprue forming pattern or a communication hole forming pattern; assembling the pattern with a moulding flask; charging a charged material of particulate type into the moulding flask, and laying another shield film over the moulding flask, the charged material and the top portion of the sprue forming pattern or the communication hole forming pattern; welding the two films together along the periphery of the top surface of the sprue forming pattern or the communication hole forming pattern; cutting the two films, thus welded, along the periphery of the top surface of the sprue forming pattern or communication-hole forming pattern; and removing the sprue forming pattern or the communication hole forming pattern through the cut portion of the film.

Abstract: A cover sheet is disposed over a recess in a work table. A folding apparatus, including an edge folder and edge erector is disposed over the recess and lowered until the edge erector is in the recess. The edge erector includes horizontally movable plates which are moved outwardly against the edges of the recess to erect the marginal edges of the sheet. The edge folder has downwardly depending, horizontally moving members. The edge folder is lowered until the members touch the work table after which the members are moved inwardly to fold the erected marginal edges of the sheet horizontally over the plates. The plates are then withdrawn while the edge folder members are maintained in contact with the folded marginal edges, and high frequency heat applied to weld the folded marginal edges to the sheet. After the welding is completed the edge erector and edge folder are raised to their initial position and the members are returned to their outward positions.