Including Application Of Distinct Closure Patents (Class 493/102)
  • Patent number: 5855544
    Abstract: A method and apparatus is disclosed for mounting constructing a flexible a tubular fitment (10) to a flexible container (11) and to the resulting product. The fitment is mounted upon a mandrel (24) having an extendable bearings in the form of an annular array of balls (27). The mandrel supporting the fitment is positioned within the container body (11) and the assembly positioned in heat sealing dies (33,34) having an annular channel (35) sized to receive the fitment. The dies have a groove (36) extending from the channel. The balls are then outwardly extended into the groove and the mandrel rotated to cause the balls to orbit in a circle and seal the fitment to the flexible container oven an annular protrusion (38).
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: January 5, 1999
    Assignee: Technical Developers, Inc.
    Inventor: Jerry E. Buchanan
  • Patent number: 5827161
    Abstract: The invention relates to a process for the fabrication of a drum made of kraft paper according to which a sheet of kraft paper is rolled on a mandril so as to constitute a rotating cylindrical tube. The end of the tube which forms the bottom is rolled with more than one turn and receives a disk which constitutes the bottom of the drum. The disk is then placed on the ridge (8) formed by the rolled edge, and a retaining collar (10) is placed around the tube. The collar is then tightened to clamp the disk (3A) onto the tube.
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: October 27, 1998
    Assignee: Georges Petit, S.A.
    Inventor: Pascal Petit
  • Patent number: 5819504
    Abstract: The present invention may be utilized as a single station integrated with a standard form, fill and seal machine. The present invention is able to retrieve fitments from a source, apply the fitments to a container and seal the fitments to the container at a single station. The design of the present invention requires only minimal space on a form, fill and seal machine. In practicing the present invention, an anvil retrieves a fitment from a source and then translationally retreats to a position for longitudinal descent into a container. The anvil, with the fitment attached, longitudinally descends into the container to a position parallel to an incision previously incised into the container wall. The anvil proceeds forward to the incision, substantially recovering the translational retreat discussed above, only at a lower level. Once the fitment is positioned therethrough the incision, a sealer permanently attaches the fitment to the container.
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: October 13, 1998
    Assignee: Tetra Laval Holdings & Finance, S.A.
    Inventors: Peter Giacomelli, Kosaku Itoh
  • Patent number: 5813963
    Abstract: A container assembly apparatus and method for assembling a roe shipping container. The lid of the container is manually positioned in contact with one edge of the container. A first button is pressed which allows swing arm to open and allow access by the container and lid to the assembly apparatus. As the container and lid move into the assembly apparatus, rails move the lid downwardly and into a closer relationship with the top edges of the container. A second swing arm terminates movement of the container and lid and maintains them in the assembly location under the apparatus. A second button is pressed and a platen moves downwardly to install the lid on the body of the container while simultaneously inserting a plug into an opening in the bottom of the container. The second button is released which allows the second swing arm to open the container to be moved from its assembly location.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: September 29, 1998
    Assignee: Fraser Box & Trading Co. Ltd.
    Inventor: Arlen Jerome Erickson
  • Patent number: 5697876
    Abstract: A spout for a container is provided with depending wings extending down from a bottom edge of the spout. The depending wings terminate in a point for piercing a container. The depending wings permit the spout to pivot ninety degrees from the container to extend from a container at a ninety degree angle therefrom. The spout has side walls with upper edges having arcs of ninety degrees. The spout is inserted into a container with a ram which drives the spout against a ramp to rock the depending wings upward with respect to the bottom edge of the spout. Thereafter, the ram drives the points into the container and the upper edges of the side walls of the spout contact the container and cam the spout back to a horizontal position to insert the ninety degree spout with the depending wings into a container.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: December 16, 1997
    Assignee: Seal-Spout Corporation
    Inventor: Robert J. Brucker
  • Patent number: 5678732
    Abstract: A process for making a container of heat-sealable plasticized sheet material, provided with a pouring spout and formed of a pair of facing walls having two side edges connected to each other by side walls folded to create side bellows. The process comprises the steps of sealing the upper edges of the facing walls so as to define an opening, of providing a small tube of a rigid material fitted with a flange that extend wider than the opening and that defines the spout and a thin cane, of inserting the thin cane into the container through the opening till the flange meets the border of the upper sealed edges, of folding said flange on the outer faces of the facing walls to cover the edges, and of tight sealing the flange to the edges.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: October 21, 1997
    Inventor: Belloli Gianpaolo
  • Patent number: 5665045
    Abstract: A spout for a container is provided with depending wings extending down from a bottom edge of the spout. The depending wings terminate in a point for piercing a container. The depending wings permit the spout to pivot ninety degrees from the container to extend from a container at a ninety degree angle therefrom. The spout has side walls with upper edges having arcs of ninety degrees. The spout is inserted into a container with a ram which drives the spout against a ramp to rock the depending wings upward with respect to the bottom edge of the spout. Thereafter, the ram drives the points into the container and the upper edges of the side walls of the spout contact the container and cam the spout back to a horizontal position to insert the ninety degree spout with the depending wings into a container.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: September 9, 1997
    Assignee: Seal-Spout Corporation
    Inventor: Robert J. Brucker
  • Patent number: 5505368
    Abstract: A container preassembly which has an inner sleeve in a flat unopened position disposed within an outer sleeve in a flat unopened position. The two sleeves are adapted to form the two ends of the container and are secured together in the aligned relationship of the final open container, thereby allowing the preassembly to be opened into the form of the final container without requiring further adjustment. Once opened, the flaps for forming the container bottom are folded to create a container ready for use. A method of making the container preassembly is also provided.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: April 9, 1996
    Assignee: Hershey Foods Corporation
    Inventors: Allen Kanter, James D. George
  • Patent number: 5390847
    Abstract: An improved fruit and product container has a bottom and two side walls formed of a common piece of corrugated cardboard and two end walls formed of laminated paperboard attached to the bottom and side walls so as to define a box. The two laminated paperboard end walls enhance the stacking strength and moisture resistance of the container. Optionally, a top removably attaches to stacking alignment tabs extending upwardly from the end walls.
    Type: Grant
    Filed: November 9, 1993
    Date of Patent: February 21, 1995
    Inventor: Thomas R. Young
  • Patent number: 5333779
    Abstract: A paperboard flat blank is scored for folding to form a container sleeve. The flat blank comprises at least first and second flat blank portions which have been sealed together along a seal line or lines to form the entire, flat blank. The majority of the area of each flat blank portion is free of contact with the other flat blank portion, i.e., the respective portions are not separate layers of a flat blank, but are separate, spaced portions thereof, connected together by one or more seal lines. The first flat blank portion exhibits at least one physical property that is different from the corresponding physical property of the second flat blank portion, other than the scoring and the shape and size in the plane of the flat blank. For example, one flat blank may be made of recycled material and the other of virgin material. The two flat blanks may have different thicknesses, or differing surface treatment, one being impregnated with oil or plastic and the other being free of such impregnation, or the like.
    Type: Grant
    Filed: February 17, 1993
    Date of Patent: August 2, 1994
    Assignee: Field Container Company, L.P.
    Inventors: John M. Sykora, Graham Hough
  • Patent number: 5201698
    Abstract: A paper package for use with milk, fruit juice or the like beverage products having a pulling-to-open member of polyethelene terephthalate and polyester film and an adhesive of synthetic rubber such as nitrile rubber for the provision of a positive opening effect of such packages.
    Type: Grant
    Filed: May 15, 1991
    Date of Patent: April 13, 1993
    Inventor: Tunetoshi Kobayashi
  • Patent number: 5201461
    Abstract: A paperboard flat blank is scored for folding to form a container sleeve. The flat blank comprises at least first and second flat blank portions which have been sealed together along a seal line or lines to form the entire, flat blank. The majority of the area of each flat blank portion is free of contact with the other flat blank portion, i.e., the respective portions are not separate layers of a flat blank, but are separate, spaced portions thereof, connected together by one or more seal lines. The first flat blank portion exhibits at least one physical property that is different from the corresponding physical property of the second flat blank portion, other than the scoring and the shape and size in the plane of the flat blank. For example, one flat blank may be made of recycled material and the other of virgin material. The two flat blanks may have differing thicknesses, or differing surface treatment, one being impregnated with oil or plastic and the other being free of such impregnation, or the like.
    Type: Grant
    Filed: July 5, 1991
    Date of Patent: April 13, 1993
    Assignee: Field Container Co., L.P.
    Inventor: John M. Sykora
  • Patent number: 5184996
    Abstract: A carton assembly machine for assembling a cover on a base is disclosed. The machine includes a frame and a first conveyor for transporting a plurality of bases. A second conveyor transports a plurality of folded covers. At an unfolding station, suction cups grasp the folded cover and are pivoted to open the cover. The cover is then moved to an assembly station where it is positioned over a carton base. A plurality of hand assemblies are moved vertically downwardly to grasp the cover and move it into overlying relationship with the base. The hand assemblies are then removed and the assembled carton moved to a tape station where tape heads apply a strip of tape to the assembled cover and base. After taping, the assembled carton is removed from the carton assembly machine.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: February 9, 1993
    Assignee: Gasdorf Tool & Machine Co., Inc.
    Inventors: Chris Rode, Steve Reigle
  • Patent number: 5142845
    Abstract: A method and apparatus for inserting one or more endcaps into the ends of a cigarette box using a slide to hold and guide the cigarette box through the apparatus along a predetermined path. Along the path, the box is aligned and endcaps are pushed along a guide rail to guide the endcaps into the ends of the cigarette box. A uniform box with a desired cross-sectional shape is produced.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: September 1, 1992
    Assignee: Philip Morris Incorporated
    Inventor: Victor L. Maclauchlan
  • Patent number: 5139194
    Abstract: The present invention is addressed to an improved apparatus and method for making and using a self-locking container which may be non-destructively disengaged and thereafter re-interengaged. The invention features a polygonal container and an interlocking base and is well-suited where the container is also provided with an interlocking lid closing configuration. The base includes inwardly directed folded flanges which interengage with outwardly directed folded flanges provided on the lower edge of the container body. Therefore, when the container body section is nestingly mated with the base section, the oppositely-disposed flanges on each of the two respective container sections become lockingly engaged without the need for adhesives or other binding materials.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: August 18, 1992
    Assignee: American Corrugated Products, Inc.
    Inventor: Donald R. Youell, Jr.
  • Patent number: 5058760
    Abstract: An easy-open package has a vessel forming an upwardly open compartment and having an annular rim surrounding the compartment and a foil engaging the rim of the vessel part all around the compartment, having an open tab which projects laterally past the rim, and formed with a tear line extending around the compartment except at the tab and extending around and delimiting of the tab. The tab is unitarily formed with the foil and is connected to the foil by an integral web that overlies and is bonded to the rim. The bond between the foil and the vessel is substantially weaker at the web than elsewhere.
    Type: Grant
    Filed: January 11, 1990
    Date of Patent: October 22, 1991
    Assignee: Firma Schmalbach-Lubeca AG
    Inventors: Georg Bolte, Dieter Heinecke, Gunter Hexel
  • Patent number: 5052994
    Abstract: A method is described for sealing at least one end of a liquids package, in the form of a tube (1), a top having wall panels (9, 10) with an opening means (11) and a bottom (3,6) and at least some of the wall panels (9,10) of the top (8) consisting of synthetic plastics coated papers, cardboard or the like carrier material and which includes the steps of first laying flat an already formed tube (1), open at the top and bottom in a plane (22') so that at least the wall panel (10) for the opening means (11) is positioned in this plane (22'), and so that an anchoring device (15,17,18) for the handle (14,14') is positioned on a lateral edge of the laid-flat tube (1) and a handle (14,14') is injection molded onto the tube (1) so that the main plane (22') of the handle (14,14') lies in the same plane (22,22') as the laid-flat tube (1) so that the handle (14,14') is fixed in the region of the top (8) of the package and simultaneously the opening means (11) is injection molded into place, and then the tube (1) togeth
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: October 1, 1991
    Assignee: Tetra Pak Holdings & Finance
    Inventor: Hans-Peter Aeschlilmann
  • Patent number: 4998985
    Abstract: The present invention relates to a videocassette storage and display sleeve having identifying indicia thereon for use with or without the videocassette. The sleeve is convertible from its rectangular box-like original form to a flattened display form with portions removed and then back to its reformed rectangular form with an adhesively-attachable tab member to form a partial sidewall to form the reconstituted rectangular box or cover. The method of reestablishing the original cover by reforming the rectangular form is also disclosed.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: March 12, 1991
    Assignee: Alpha Enterprises, Inc.
    Inventor: James K. Sankey
  • Patent number: 4978056
    Abstract: In a system of packaging of foodstuffs in containers of rectangular horizontal section, each open-topped container is sterilized, filled, and closed with a sterilized closure. The closure is of a laminate including a thermoplastics layer of sufficient thickness to fill an internal discontinuity of the container mouth during heat-sealing of the closure to the container. In making the closure, a portion of laminate is partially severed to form a flap and the laminate is clamped around the flap and drawn to form a shallow dish, to the inside of the base of which is heat-sealed a diaphragm including a pull tab. The thermoplastics layer is on a reflective metal layer and incorporates infrared-absorbing particles and infrared-reflective particles.
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: December 18, 1990
    Inventors: Martin F. Ball, Ian M. Vokins
  • Patent number: 4969861
    Abstract: An apparatus for squaring a sleeve having at least one pair of opposed bevelled corners comprises a cradle having sleeve supporting members merging towards an apex but terminating spaced from the apex and having a support beam in the space between the members and the apex. The support members and support beam are arranged to conform with the outside shape of the sleeve in squared condition. An platen is moveable into a sleeve while the sleeve is supported in the cradle. The platen is shaped to substantially conform with the inside of the sleeve in squared condition and is moveable toward the apex to force the sleeve into conformity with the cradle and the support member and thereby square the box. Preferably an end closure pad applicator will apply an end closure pad to the squared sleeve while supported in the cradle and with the platen in place to resist pressure applied to the outside of the sleeve when the pad is being secured to the sleeve.
    Type: Grant
    Filed: October 3, 1989
    Date of Patent: November 13, 1990
    Assignee: MacMillan Bloedel Limited
    Inventor: Bradley J. Crittenden
  • Patent number: 4964260
    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).
    Type: Grant
    Filed: April 13, 1989
    Date of Patent: October 23, 1990
    Assignee: Focke & Co. (GmbH & Co.)
    Inventors: Heinz Focke, Hugo Mutschall
  • Patent number: 4927075
    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.
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: May 22, 1990
    Assignee: Pure-Pak, Inc.
    Inventor: Robert E. Lisiecki
  • Patent number: 4863093
    Abstract: A portfolio presentation folder is made of a single blank sheet of cardboard for custom decoration and instant assembly by the user in a home, school or office environment. The blank sheet is separable into a pocket part and a front cover part so that the latter may be separately and independently decorated by standard office machines, desk-top publishing equipment, etc., or by hand. Both parts are provided with cutouts forming handle flaps and handle openings arranged for registry with one another so as to provide strong, multi-layered handle regions when the cover and pocket parts are connected to one another after the pocket part has been folded to form a pocket.
    Type: Grant
    Filed: May 16, 1988
    Date of Patent: September 5, 1989
    Inventor: Gerard M. DuCorday
  • Patent number: 4846774
    Abstract: A machine and process for making container lid assemblies with a flexible membrane with a pull tab adhesively secured to a rigid ring so that when desired the membrane can be peeled off and removed from the ring to provide access to the container. Individual membranes are cut and separated from a web by rotating dies and individually transferred, accelerated and applied by a rotating anvil cylinder and transfer roller to individual rings which have been preheated sufficiently to activate an adhesive to adhere the membrane about its periphery to the ring. The rings are heated by an induction coil and a downstacker deposits heated rings on a moving conveyor belt which conveys them under the transfer roller where they are urged into firm engagement with a membrane by a resilient applicator pad on the transfer roller and an underlying support roller.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: July 11, 1989
    Assignee: Bernal Rotary Systems, Inc.
    Inventor: Jerry L. Bell
  • Patent number: 4834823
    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.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: May 30, 1989
    Assignee: Tetra Pak Developement S.A.
    Inventor: Wilhelm Reil
  • Patent number: 4750955
    Abstract: An ultrasonic heatsealing mechanism and process for securing portions of a carton blank to at least one flanged container in which the surfaces to be secured are susceptible to ultrasonic heatsealing. The mechanism comprises a resiliently mounted ultrasonic horn and a series of movable counterpart elements spaced from an adjacent tip of the horn so that the counterpart elements move relative to the end of the horn one after the other. Means are provided to move the container and blank so that overlapping surfaces to be heatsealed together are passed with the counterpart elements longitudinally with respect to the horn tip means being provided to activate the horn at least when the surfaces and at least one counterpart element are present together adjacent said end of the horn so that heat-sealing can occur and causing the horn to move resiliently so that a constant gap between the tip of the horn and that counterpart element is maintained substantially constant during the heatsealing process.
    Type: Grant
    Filed: March 18, 1987
    Date of Patent: June 14, 1988
    Assignee: The Mead Corporation
    Inventor: Hubert Haguenier
  • Patent number: 4738365
    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.
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: April 19, 1988
    Assignee: Ridgway Packaging Corp.
    Inventor: Donald R. Prater
  • Patent number: 4648859
    Abstract: The invention relates to a device which seals a base or a lid onto a length of section and in particular to apparatus for sealing tubular section used as packaging and obtained by adhesion of several strips of fibrous, cellulosic, metallic, plastic and other materials.
    Type: Grant
    Filed: December 21, 1982
    Date of Patent: March 10, 1987
    Inventor: Georges Sireix
  • Patent number: 4642974
    Abstract: A flange folding machine for folding the distal end of the flanges of a blister package or the like inwardly upon the proximal ends thereof to form closure panel receiving channels. The machine comprises, a plurality of carriers mounted on a conveyor for continuous movement through a folding station, a side flange folding mechanism, a first heater located in close proximity to each first fold line and being operable to heat the side flanges to a sufficient extent to render them formable. The mechanism may also include a leading end flange forming mechanism for folding the distal end portion of a leading end flange inwardly upon the proximal end portion thereof along a transverse foldline. The leading end flange forming mechanism comprises a second heater which is mounted on a carriage which is slidably mounted for reciprocating movement in the folding station to and fro along between a forward position and the retracted position.
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: February 17, 1987
    Assignee: Macmorine Fabrications Ltd.
    Inventors: David R. L. Macmorine, Andrzej Maczvszenko, Terence F. Karley
  • Patent number: 4637544
    Abstract: A process for the manufacture of boxes, wherein a sheet material, such as cardboard, is punched to produce a box element with at least five sections limited by parallel score lines; the ends of at least three sections are inserted and fastened in U-grooves recessed in side walls formed by synthetic material, a fourth section forms a lowerable and liftable cover and a fifth terminal section forms a closing flap, for which each side wall of synthetic material has an insertion groove. The fastening of the punched element to the side walls may be carried out without adhesives by means of the engagement of the punched element edges, and of cuts thereof, in the U-grooves of the side walls, and with some teeth of them. Some side flaps defined in the closing flap can co-operate with inwardly and outwardly directed teeth of the insertion grooves, by providing for the cover in closed position a releasable catch and, respectively, a sealed closing.
    Type: Grant
    Filed: December 28, 1984
    Date of Patent: January 20, 1987
    Inventor: Alessandro Quercetti
  • Patent number: 4581003
    Abstract: A method for manufacturing a container for filling with juice or the like at a high temperature includes applying a container body to a mandrel having an outer surface corresponding to the shape of a cylinder and a plurality of recessed portions located about the circumference of the mandrel. The recessed portions are inwardly recessed from the substantially cylindrical outer surface and are separated by a plurality of connecting portions corresponding substantially to the cylindrical outer surface. The container body is subjected to vacuum attraction through a plurality of apertures provided in the mandrel whereby the container body is drawn into the plurality of recessed portions to conform the shape of the container body to the shape of the mandrel. The container is thereafter disengaged from the mandrel by feeding compressed air through the plurality of apertures of the mandrel.
    Type: Grant
    Filed: July 3, 1984
    Date of Patent: April 8, 1986
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Sukenori Ito, Yoshiaki Take, Takahisa Hirayama
  • Patent number: 4548668
    Abstract: This relates to a machine for assembling end units with container bodies. The container bodies have cylindrical open upper ends over which a cylindrical lower portion of an end unit or dome is telescoped with the overlapping portions being adhesively bonded together. The machine receives the end units serially and by way of a Ferris wheel type conveyor moves the end units first to an adhesive applicator where a band of adhesive is applied to the interior of each end unit, after which each end unit is then telescoped over and pressed into position relative to an associated body. The operation of the machine is continuous.
    Type: Grant
    Filed: January 10, 1983
    Date of Patent: October 22, 1985
    Assignee: Continental Can Company, Inc.
    Inventors: Donald J. Roth, Charles S. Kubis, John Walter
  • Patent number: 4505423
    Abstract: A liquid-tight paperboard container having at least one radiused corner is disclosed, together with a method for manufacturing it. The container includes a sidewall member having a bottom edge portion folded under a bottom piece to define a flange which is sealed to the bottom piece by means of heat and pressure. The region of the seal between the flange and the bottom piece is defined by a knurled surface on the flange. This permits the formation of a high quality, reliably liquid-tight container using relatively low pressures. In addition, the portions of the bottom edge of the sidewall member adjacent the radiused corners of the container are preferably provided with slits or notches to limit the buckling that occurs during the process of folding the edge under the bottom piece. By doing this, in combination with the use of a knurled for sealing, containers having corners with unusually small radii of curvature be reliably, easily and inexpensively manufactured.
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: March 19, 1985
    Assignee: International Paper Company
    Inventors: Lev Balanovsky, Arne H. Brauner
  • Patent number: 4484964
    Abstract: A method of providing a seal between the barrel portion and the end plate of a can including the steps of providing a metallic can plate having a circumferential peripheral portion of inverted U-shaped cross section, defining an annular groove, the peripheral portion including a free outer side wall, the can end plate being coated at its inner side with a first layer of heat-fusible plastic; providing a can barrel coated at its inner surface with a second layer of heat-fusible plastic; fitting the can end plate to the upper end of the can barrel such that the upper edge portion of the can barrel is tightly fitted in the annular groove and the can end plate; curling the free outer side wall at least one turn into the groove to form a curled and expanded portion protruding into the groove so that the groove has an upper portion and a lower portion narrower than the upper portion; pressing the curled and expanded portion against the upper edge portion of the can barrel so as to cause the upper edge portion of th
    Type: Grant
    Filed: July 13, 1983
    Date of Patent: November 27, 1984
    Inventor: Kiyoshi Kawamata
  • Patent number: 4461137
    Abstract: A corrugated container and the method of forming the container saves paper. The method of forming the container includes gluing backing webs of paper to each side of a corrugated web, resulting in a composite web of three layer thickness. One of the backing layers is wider than the other backing layers, defining single layer strips on each edge of the multiple layer central section. Longitudinal fold lines are placed in the multiple and single layer strips. The composite web is sheared into sheets, with the sheet being folded along the fold lines into a container. The fold lines are placed to position the single layer portions on the upper sidewalls and top of the container, where less strength is required.
    Type: Grant
    Filed: June 1, 1982
    Date of Patent: July 24, 1984
    Inventor: Charles E. Wood
  • Patent number: 4460348
    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.
    Type: Grant
    Filed: June 3, 1981
    Date of Patent: July 17, 1984
    Assignee: Nihon Dixie Company Limited
    Inventors: Akira Iioka, Shoichi Suzuki
  • Patent number: 4409045
    Abstract: Method and apparatus for fabricating and seaming two-piece containers such as frustoconical cups and the like are provided which include a two-piece mandrel having retractable tip or nose piece which is coaxial in its relation to the main body of the mandrel in its extended position and retracts to an offset position. The retraction/extension path is configured to constrain the surface of the tip or nose piece to impart a progressive sealing pressure to a portion of the container side seam against the reaction surface of a seam clamp. The tip also has vacuum porting for holding a bottom blank during the container forming process and acts to seal the bottom blank in the container bottom curl and in the case of effecting heat sealed seams in the container, to position the bottom blank so as to preclude heat damage to the bottom wet line area of the container.
    Type: Grant
    Filed: July 20, 1982
    Date of Patent: October 11, 1983
    Assignee: Maryland Cup Corporation
    Inventor: Charles E. Busse
  • Patent number: 4398902
    Abstract: A container and method of forming it. The container has four walls joined together along score lines, and a cover having a fastening panel, a fold-back panel, a cover panel and a front panel connected by score lines and side panels hingedly joined to said cover panel along score lines.The cover is fastened to the upper edge of one wall at the fastening panel. The free edge of the fastening panel is aligned with the upper edge of the one wall, and one side edge of the panels having no side panels is aligned with the corresponding side edge of the one wall.An alternate cover design has side panels hingedly connected to the front panel along score lines and a shelf panel hingedly connected to the front panel along a score line.In the method of assembling the container, the free edge of the fastening panel is aligned with the upper edge of the wall, the side edge of the cover is aligned with the side edge of the wall and the fastening panel is fastened to the wall.
    Type: Grant
    Filed: May 3, 1982
    Date of Patent: August 16, 1983
    Assignee: Weyerhaeuser Company
    Inventor: Robert J. Mangum
  • Patent number: 4380447
    Abstract: A novel ice cream product container with complementary closure member is disclosed. The container body member is usually of paperboard and formed from an integral blank comprising edge-reinforcing flaps articulated to wall members, which reinforcing flaps are then folded down upon and secured to their respective wall members to provide a reinforced portion of double thickness in the container formed from the blank. This folded-over, reinforced portion is also present in the flat-folded tube produced from the blank, the squared-up tube, the erected container, and finally in the closed and filled package. This folded-over, reinforced portion of double thickness contains defined areas of low resistance adapted to receive lugs formed in a wall of the complementary closure member. The closure member also provides a complementary channel between essentially upstanding and downstanding walls for receiving the reinforced portion of the container walls in frictional engagement therewith.
    Type: Grant
    Filed: September 12, 1980
    Date of Patent: April 19, 1983
    Assignee: James River Corporation of Virginia
    Inventor: Thomas VanderLugt, Jr.
  • Patent number: 4259827
    Abstract: A packaging apparatus for erecting, filling and closing paperboard cartons of a type that are initially supplied in a flattened condition and have four body panels, lower closure flaps; and an open top, and a separate plastic cover. The packaging apparatus opens and erects the paperboard cartons in an inverted position and advances the cartons while inverted along a path past a filling station. Covers are fed to a position below the cartons and are pressed into the open ends of the cartons as they are advanced along the path and before they reach the filling station. The lower closure flaps are thereafter folded to close the cartons.
    Type: Grant
    Filed: November 9, 1979
    Date of Patent: April 7, 1981
    Assignee: Anderson Bros. Mfg. Co.
    Inventor: Roger H. Stohlquist