Including Heat Sealing Patents (Class 493/133)
  • Patent number: 9409368
    Abstract: A folding unit for producing packages of pourable food products from sealed packs having main portion and opposite end portions; each pack comprising, for each end portion, a fin and a pair of flaps projecting laterally from main portion; unit comprises: a conveyor fed with a plurality of packs and which feeds the pack along a forming path; and a folder interacting with each pack to fold relative end fin onto a relative end portion; conveyor comprises first and second links articulated to each other; second link is arranged downstream of first link, relative to a first advancing direction of conveyor; folder comprises: a slot defined by first link to receive end fin; and a slide operatively connected to second link and movable between a first position at least partially engaging slot, to fold end fin onto a relative end portion, and a second position detached from slot.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: August 9, 2016
    Assignee: TETRA LAVAL HLDINGS & FINANCE S.A.
    Inventors: Andrea Catellani, Richard John Pedretti, Massimo Pradelli
  • Publication number: 20150147583
    Abstract: Disclosed are films which can provide seal strengths suited for both peelable and nonpeelable seals in a package.
    Type: Application
    Filed: October 17, 2014
    Publication date: May 28, 2015
    Inventors: Fang Bao, Becky Jin Na Zhao, Achiel J. Van Loon
  • Publication number: 20150099616
    Abstract: A container-forming process is used to form an insulative container. The container-forming process includes a staging-materials operation, a body-forming operation, and a brim-forming operation.
    Type: Application
    Filed: October 6, 2014
    Publication date: April 9, 2015
    Inventors: Kody A. Chapman, Roy E. Ackerman, Chris K. Leser
  • Patent number: 8973341
    Abstract: The apparatus includes an operating unit, which can be a welding unit for welding a closing film to an edge zone of a containing element or a separating unit for separating containing elements from portions of sheet material. The apparatus includes a control unit programmed to enable the operating unit to selectively process a continuous strip of containing elements or discrete groups of containing elements.
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: March 10, 2015
    Assignee: Sarong S.p.A.
    Inventors: Andrea Bartoli, Alberto Bartoli
  • Publication number: 20140242311
    Abstract: The present invention generally relates to a sheetlike composite (3) comprising a layer configuration with the following layers: 0. optionally a layer of thermoplastic KSu (13); 1. a carrier layer (4); ii. a first layer of thermoplastic KSv (35); iii. a barrier layer (5); iv. a second layer of thermoplastic KSa (6); v. at least one further layer of thermoplastic KSw (7); wherein the Vicat softening temperature of the layer of thermoplastic KSv (35) and the Vicat softening temperature of the layer of thermoplastic KSa (6) is in each case higher than the Vicat softening temperature of the layer of thermoplastic KSw (7). The present invention furthermore relates to a process for the production of the sheetlike composite, a container which surrounds an interior and comprises at least one such sheetlike composite, and a process for the production of this container.
    Type: Application
    Filed: July 23, 2012
    Publication date: August 28, 2014
    Applicant: SIG TECHNOLOGY AG
    Inventors: Michael Wolters, Stefan Pelzer
  • Patent number: 8777047
    Abstract: A polyhedron disposable container formed from flexible weldable plastic film is provided. The container has opposite ends and an opening that accommodates a port at the center of at least one of such ends. The container also has multiple sides and an opening on at least one such side located midway between the edges of such side.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: July 15, 2014
    Assignee: Meissner Filtration Products, Inc.
    Inventor: Max Blomberg
  • Publication number: 20140121089
    Abstract: A bag-in-box assembly apparatus comprising a frame, an insertion assembly and assembly urging arms. The bag-in-box assembly apparatus is configured for use in association with a bag-in-box package having a box with an opening and a bag having a spout. A collar is coupled to the spout of the bag and the also interfaces with the opening of the box. The assembly apparatus is utilized to couple the collar to the bag, inserting the bag into the box and coupling the collar to the box.
    Type: Application
    Filed: October 23, 2013
    Publication date: May 1, 2014
    Applicant: SCHOLLE CORPORATION
    Inventor: John Brooks
  • Publication number: 20130341385
    Abstract: A method for assembling a fin seal container including folding a container blank into a three-dimensional body that defines an internal volume and includes an end portion that defines an opening into the internal volume, the end portion including a first fin seal panel having inner and outer major surfaces and a second fin seal panel having inner and outer major surfaces, folding the end portion such that the inner major surface of the first fin seal panel is positioned adjacent to the inner major surface of the second fin seal panel, separating the first fin seal panel from the second fin seal panel, treating the inner major surface of the first fin seal panel and/or the inner major surface of the second fin seal panel, and pressing the first fin seal panel into engagement with the second fin seal panel.
    Type: Application
    Filed: July 26, 2013
    Publication date: December 26, 2013
    Inventor: Rune K. HARALDSSON
  • Patent number: 8573435
    Abstract: A polyhedron disposable container formed from flexible weldable plastic film and a method of forming the same are provided. The container has opposite ends and an openings that accommodates a port at the center of at least one of such ends. The container also has multiple sides and an opening on at least one such side located midway between the edges of such side.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: November 5, 2013
    Assignee: Meissner Filtration Products, Inc.
    Inventor: Max Blomberg
  • Publication number: 20130167484
    Abstract: The present invention relates generally to a process for the production of a container surrounding an interior, comprising the steps a. provision of a planar composite comprising i. a carrier layer, ii. a barrier layer of plastic joined to the carrier layer, iii. at least one layer of thermoplastic plastic KSa joined to the barrier layer of plastic, the at least one layer of plastic optionally being a plastics mixture of at least two plastics, b. folding of the planar composite to form a fold with at least two fold surfaces adjacent to one another and c. joining of respectively at least a part region of the at least two fold surfaces by heating the part region to form a container region, and a container obtainable by this process.
    Type: Application
    Filed: January 26, 2011
    Publication date: July 4, 2013
    Applicant: SIG TECHNOLOGY AG
    Inventors: Michael Wolters, Stefan Pelzer, Matthias Kaul, Günther Lorenz, Olivier Peterges, Holger Schmidt
  • Patent number: 8079492
    Abstract: A polyhedron disposable container formed from flexible weldable plastic film and a method of forming the same are provided. The container has opposite ends and an openings that accommodates a port at the center of at least one of such ends. The container also has multiple sides and an opening on at least one such side located midway between the edges of such side.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: December 20, 2011
    Assignee: Meissner Filtration Products, Inc.
    Inventor: Max Blomberg
  • Publication number: 20110017812
    Abstract: Bag-on-container assemblies and bag-in-container assemblies are disclosed. The container may include a paperboard box having a front wall, a rear wall, a pair of opposed side walls, a plurality of flaps capable of forming a bottom wall and a plurality of flaps capable of forming a top wall. The inside surfaces of the box walls, including the outwardly facing strips, may have a thermal plastic coating thereon. The bag component of each type of assembly may include a closure member for to enable resealing of the bag component.
    Type: Application
    Filed: January 5, 2010
    Publication date: January 27, 2011
    Inventors: Stephen P. Belko, Neil J. Kozarsky, Eliot M. Kozarsky, John A. Carporaso
  • Publication number: 20100137118
    Abstract: A method for manufacturing a vesicant cup includes a cut fan-shape vesicant plate having thinner upper and lower arcs formed as upper and lower edges. The vesicant plate is rolled and pressed on two stacking joints formed on left and right edges of the vesicant plate respectively. The pressed joints are thinner than other portions of the cup body not being pressed. A lip is formed by rolling up the upper edge outward, and a bottom join is formed by folding up the lower edge inwards. An edge of a vesicant cup bottom is bent downwards as a round joint for connecting and sealing the bottom joint of the vesicant cup body. A thickness of the round joint, bottom joint and the vesicant cup body corresponding to the round joint is thinner than other portions of the vesicant cup body not being pressed.
    Type: Application
    Filed: January 23, 2009
    Publication date: June 3, 2010
    Inventor: Hsi-Ching Chang
  • Patent number: 7665276
    Abstract: The disclosure relates to an apparatus for sealing a package. The apparatus comprises a sealing unit and an abutment between which a number of material layers are disposed to be clamped and sealed and fused together, wherein the abutment is connected to at least one elongate element which extends in a direction from the abutment towards and past the sealing unit, the elongate elements, beyond the sealing unit are disposed to be connected to at least one first operating element, and an operating unit is disposed to apply a force between the sealing unit and the first operating element so that these are moved in a direction away from one another and so that the abutment and the sealing unit are moved in a direction towards one another.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: February 23, 2010
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventors: Anders Delén, Jan Svensson
  • Publication number: 20090242619
    Abstract: A polyhedron disposable container formed from flexible weldable plastic film and a method of forming the same are provided. The container has opposite ends and an openings that accommodates a port at the center of at least one of such ends. The container also has multiple sides and an opening on at least one such side located midway between the edges of such side.
    Type: Application
    Filed: March 23, 2009
    Publication date: October 1, 2009
    Inventor: Max Blomberg
  • Publication number: 20090098989
    Abstract: A food-safe container (2) for liquids is composed of a tubular body (3) referable to a longitudinal axis (2a), and a neck (7) presenting a quadrangular base (16) fastened coaxially to an open top end (5) of the tubular body (3) afforded by a frustopyramidal connecting portion (6) of which the four tapered corner edges are pinched initially and left with four relative fins (22); the container (2) is formed by a machine (1) equipped with a folding and sealing or welding unit (24) including twin pairs of arms (26) by which the single fins (22) are folded flat against corresponding side walls (6a, 6b, 6c, 6d) of the connecting portion (6), and a pair of heat-sealers or ultrasonic welders (29) operating in conjunction with the arms (26), by which the fins (22) flattened against the respective side walls (6a, 6b, 6c, 6d) are secured in place.
    Type: Application
    Filed: May 17, 2005
    Publication date: April 16, 2009
    Inventors: Fulvio Boldrini, Roberto Ghiotti, Stefaro Cavallari
  • Patent number: 7364779
    Abstract: A plastic, easy-opening closure for a retortable container and a method for sealing are provided. The closure includes a plastic membrane having an outer layer of polypropylene, a first tie layer, an intermediate layer formed of EVOH, a second tie layer, an inner layer formed of polypropylene, and a peel-seal layer. The peel-seal layer can be formed of high density polyethylene or polypropylene with a contaminant dispersed therein so that the closure can be easily removed from the container for opening.
    Type: Grant
    Filed: September 2, 2003
    Date of Patent: April 29, 2008
    Assignee: Sonoco Development, Inc.
    Inventor: Srinivas Nomula
  • Patent number: 7241254
    Abstract: Disclosed herein is a container defining an interior and an exterior provided with a first access panel and a second access panel for creating an opening for passage between the interior and the exterior, and methods for making and using such a container.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: July 10, 2007
    Assignee: Graphic Packaging International, Inc.
    Inventors: Joseph C. Walsh, Robert L. Conatser, Raymond S. Kastanek
  • Patent number: 7238149
    Abstract: This invention relates to an improvement in a process for forming a carton from paperboard stock comprising the steps: applying an aqueous based adhesive to select parts of a paperboard carton blank obtained from a paperboard feedstock; drying the aqueous based adhesive; folding the select parts of the adhesive coated carton blank onto cooperating parts of the paperboard blank; and, heat sealing the select and cooperating parts thereby forming the carton; wherein the aqueous based adhesive is comprised of a vinyl acetate/ethylene polymer formed by emulsion polymerization and having (a) a crystalline melting point (Tm) ranging from 35 to 110° C., preferably 50 to 90° C.; measured at a heat rate of 20° C./minute and, (b) a tensile storage modulus of at least 1×104 dynes/cm2 at 115° C. measured at 6.28 rad/sec.
    Type: Grant
    Filed: January 5, 2005
    Date of Patent: July 3, 2007
    Assignee: Air Products Polymers, L.P.
    Inventors: Randolph John Lorenz, Christian Leonard Daniels, John Joseph Rabasco
  • Patent number: 7223317
    Abstract: A method of assembling a storage unit is disclosed. The method comprises applying heat to a groove separating a pair of walls to melt at least a portion of the plastic material, and pivoting the walls so that the surfaces of the groove contact and join as the melted plastic material solidifies.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: May 29, 2007
    Assignee: The Mills Company Inc.
    Inventors: David W. Newberry, Klaus Fromme, Mark A. Thielke, James R. Heimler, Richard A. Goodare, Bryan H. Mullett, Carolyn E. Johnson, Thomas E. Pelt, Larry K. Stover
  • Patent number: 6958033
    Abstract: A fitment has walls with a spout aperture therebetween. Reduced wall thickness results in a reduced amount of plastic in the fitment. An alternative embodiment uses radially extending meltable fins. During installation in a sealing apparatus, a heated mandrel engages the inner diameter of the spout aperture thereby pre-heating and physically supporting the fitment during the installation process. The heated mandrel typically engages the fitment at least one cycle prior to be installed. The fitment may be canoe-shaped.
    Type: Grant
    Filed: July 22, 2003
    Date of Patent: October 25, 2005
    Assignee: Illinois Tool Works Inc.
    Inventor: Art Malin
  • Patent number: 6764576
    Abstract: The disclosure relates to a method and an apparatus for forming and thermosealing one end of a packaging container which is manufactured from thermosealing material. The packaging container is placed in a conveyor which brings it into contact with mechanical forming devices (22) which progressively reform the packaging container end so that a sealing fin (6) oriented in the direction of movement of the packaging container is formed. In a subsequent sealing station (12), thermoplastic material located in the sealing fin (6) is heated to sealing temperature, whereafter wall portions included in the sealing fin are mechanically urged against one another during simultaneous cooling and continued advancement.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: July 20, 2004
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventors: Esko Heinonen, Mats Nyhlén, Mikael Andersson
  • Patent number: 6692423
    Abstract: A method for making a cigarette container wherein a hollow container body is constructed having an open end which includes a step portion defining a surrounding rim and interior abutments. A plug is prepared which is sized to be received between the rim of the body and to abut the abutments. The plug includes a main plate, a metal layer attached to the main plate, and a heat activated adhesive located adjacent the metal layer and positioned to be immediately adjacent the step portion. An induction heating device is then located adjacent the open end of the body, and activated to heat the metal layer and hence to heat the adjacent adhesive so that after cooling the plug is bonded to the body by the adhesive and the plug thus permanently closes the open end of the body.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: February 17, 2004
    Assignee: SASIB Corporation of America
    Inventors: Walter Bohdan, Samuel D. Johnson, Robert H. Coultrip, William M. Phillips, Carl E. Copeland, William E. Hazlett
  • Patent number: 6648636
    Abstract: A heating device for heat-sealing containers by heating an end forming portion 13 of a tubular container having a rectangular to square cross section, the end forming portion 13 having four generally quadrilateral first to fourth panels 21 to 24 continuous with one another and each having a heating region 31, 32, 33 or 34 to be heated on an inner surface thereof. The heating device has a hot air nozzle 71 in the form of a bottomed tube and fittable into the container end forming portion 13 for heating an inner surface of the container.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: November 18, 2003
    Assignee: Shikoku Kakoki Co., LTD
    Inventors: Toshio Kanematsu, Takahiro Miyawaki, Yoshihiro Saijo, Michio Ueda
  • Patent number: 6644539
    Abstract: A package with bottom panel stand-offs includes a plurality of upstanding side walls, each side wall contiguous or sealed to adjacent side walls, a sealed top panel, and a sealed bottom panel. The sealed bottom panel has a generally planar portion and three stand-offs formed therein. The three stand-offs are non-coplanar with the generally planar region and define a triangular pattern other than a right angle triangle. The stand-offs raise the generally planar portion above and spaced from a surface on which the package rests. A method for forming a stable carton is also disclosed.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: November 11, 2003
    Assignee: Tetra Laval Holdings & Finance, SA
    Inventors: Craig Boyd, Charles Christensen
  • Patent number: 6612973
    Abstract: In the method for feeding blanks in the container-forming unit, the blank is advanced onto the wrapping mandrel which is attached to a moving structure, which moves the wrapping mandrel between the different processing stations of the container-forming unit. Blanks are advanced as a continuous blank web to the wrapping mandrel of the wrapping station, where they are detached from the end of the blank web and advanced onto the wrapping mandrel. The blank web is fed by means of a conveyor situated before the detachment point in the feeding direction by steps corresponding to the length of a blank, and after each feeding movement a blank is detached from the end of the blank web.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: September 2, 2003
    Assignee: UPM-Kymmene Corporation
    Inventor: Jaako Häggman
  • Patent number: 6428456
    Abstract: An apparatus for forming containers with reinforced edges, comprising: a roll for feeding a flexible film; a forming collar upstream of a first tube around which the film is wrapped; a device for heat-sealing the longitudinal flaps of the film wrapped around the tube so as to form an enclosure, wherein the first tube tapers into a second tube and at the tapering region there is provided at least one insertion element which acts at right angles to the surface of the film, so as to form at least one rib which is directed toward the inside of the enclosure, and further comprising a sealing device for at least partially heat-sealing the at least one rib.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: August 6, 2002
    Assignee: BP EUROPACK S.p.A.
    Inventors: Sergio Visona', Giorgio Trani, Marion Sterner
  • Patent number: 6165115
    Abstract: A process is provided for closing and hermetically sealing a bottom of a container. A cylindrical container body is provided which has an inside heat-sealable surface and an open bottom end. A flange is formed on and around the bottom end of the cylindrical container body which extends outwardly from the container body at a sharp radius of approximately 90 degrees to an outside surface of the container body and which defines a flat circular heat-sealable surface on an outer side of the flange. A generally circular membrane patch having an inside heat-sealable surface is positioned on the flat circular heat-sealable surface of the container body flange covering the open bottom end of the container body. The heat-sealable surfaces of the container body flange and the membrane patch are heat-sealed to each other for hermetically sealing the container bottom end.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: December 26, 2000
    Assignee: Sonoco Development, Inc.
    Inventor: Keith Robert Rea
  • Patent number: 6162156
    Abstract: A packaging machine comprises a rotor 22 having radial mandrels 21 each adapted to carry a tubular blank 11 of square to rectangular cross section as fitted therearound and arranged to successively stop at a plurality of processing stations I to VIII, a group of devices 23 to 28 arranged respectively at the required stations among the processing stations I to VIII for folding and closing a container bottom forming end portion 14 of the blank 11 as fitted around the mandrel 21, and an air suction nozzle 31 for collecting extraneous matter is disposed at a required location along a path of movement of the mandrel.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: December 19, 2000
    Assignee: Shikoku Kakoki Co., Ltd.
    Inventors: Yasuji Fujikawa, Takashi Arao, Michio Ueda
  • Patent number: 6149566
    Abstract: A heating device for heat-sealing bottom portions of containers has a hot air nozzle 62. The nozzle 62 is positionable as opposed to a bottom forming end portion 14 of a tubular blank 11 of square cross section as fitted around an intermittently drivable mandrel 52 for heating a region of the blank end portion. The nozzle 62 is movable toward or away from the end portion 14 on the axis of the blank 11. The nozzle 62 has orifices 101, 102, 131, 132, 133 directed toward a plurality of parts within the region when the nozzle is positioned close to the end portion. Among the orifices 101, 102, 131, 132, 133 of the nozzle 62, those 101, 131 directed toward the part of the region remote from an extremity of the blank when the nozzle is so positioned have a greater open area ratio than those 102, 133 directed toward the part of the region proximate to the blank extremity when the nozzle is so positioned.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: November 21, 2000
    Assignee: Shikoku Kakoki Co., LTD
    Inventors: Yoji Nishio, Masaru Matsuda, Michio Ueda
  • Patent number: 6094884
    Abstract: A bottom forming apparatus having a mandrel cap and a sealing plate configured to create a carton with an elevated bottom. The present invention alleviates the problem of cartons having soggy bottoms since the point of absorption, the raw paperboard edge, is elevated above the moisture which may be present during distribution from the packaging machine to the retailer. The elevated bottom portion is actually inverted into the carton with planar portions resting on the surface to support the carton. The sealing plate has a multitude of elevated portions and the mandrel cap has a recess and an angled edge for elevating the raw paperboard edge. The various embodiments of the sealing plate are able to elevate most carton bottom configurations including the standard TETRA REX.RTM. carton and the TETRA REX.RTM. sixth panel with skived edge carton.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: August 1, 2000
    Assignee: Tetra Laval Holdings & Finance, SA
    Inventors: Charles Christensen, Mats Johansson
  • Patent number: 6048295
    Abstract: The disclosure relates to a method in the forming of packaging containers (1) which have sealing fins in which the packaging material is sealed inside-to-inside, and also projecting, double-walled corner flaps (8). In order to form a parallelepipedic packaging container, the corner flaps are folded down and sealed to the outside of the packaging container, which subjects a sealing fin running between the corner flaps to stresses which may entail untightness in the packaging container. This is avoided in that the sealing fin, prior to the downward folding operation, is deformed in that at least a portion of the fin (4) is laterally displaced in relation to adjacent portions of the fin.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: April 11, 2000
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventor: Jan-Erik Olsen
  • Patent number: 5988494
    Abstract: A gable top for a carton formed from a carton blank having an outer layer bonded to an intermediate layer by a first strength and an inner layer bonded to the intermediate layer by a second strength less than by a first strength and wherein the intermediate layer is of an esthetically pleasing color and formed into a gable top by sealing together facing portions of the inner layer so that when the gable top is separated to form a pour spout the inner surface of the pour spout will be aesthetically pleasing.
    Type: Grant
    Filed: October 1, 1998
    Date of Patent: November 23, 1999
    Assignee: Graphic Packaging Corporation
    Inventor: Alan Fontaine
  • Patent number: 5809743
    Abstract: An apparatus for forming and sealing a fin at a gabled end of each carton in a plurality of cartons traveling along a predetermined carton path is set forth. In accordance with the apparatus, each carton has a first plurality of opposing top flaps disposed transverse to the predetermined carton path and a second plurality of opposing top flaps disposed longitudinal to the predetermined carton path. The first and second plurality of opposing top flaps are adapted to form a gabled structure of the gable top container. The apparatus includes a first pre-folder for directing the first pair of opposing top flaps of each carton toward each other, thereby also causing the second pair of opposing top flaps to be urged toward each other. A second pre-folder is disposed downstream of the first pre-folder along the predetermined carton path for increasingly directing the second plurality of opposing top flaps of each carton together as each carton travels along the predetermined carton path.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: September 22, 1998
    Assignee: Tetra Laval Holdings & Finance, SA
    Inventors: Karl D. Ylonen, John M. Tovey
  • Patent number: 5762595
    Abstract: A flat-sitting bottom end closure for liquid filled, thermoplastic-coated paperboard containers, and mechanism for forming same. The mechanism includes an indexible rotor having a plurality of mandrels on which tubular container blanks are mounted, wherein each mandrel has an end cap defining a configuration which, in conjunction with a complementary pressure pad, produces four flat corner portions or pedestals on the container bottom end closure when confined between the pressure pad and each end cap.
    Type: Grant
    Filed: October 1, 1996
    Date of Patent: June 9, 1998
    Assignee: Elopak Systems AG
    Inventors: Gonzalo D. Santiago, Michael L. Davis
  • Patent number: 5523046
    Abstract: An apparatus with pivoting blades and closable surfaces for forming a sheet of material into a flower pot or flower pot cover having fins. In an embodiment for forming outwardly extending fins, the apparatus includes a male mold and a plurality of plates arranged in pairs to define a forming opening. The male mold has a plurality of fingers which are laterally extendable from the outer periphery of the male mold. A pneumatic or hydraulic piston and cylinder is provided to move the male mold between a storage position spaced from the forming opening and a forming position within the forming opening. Each pair of plates is movable between an open position and a closed position. In operation, the fingers are extended to push folded portions of a sheet of material between the pairs of plates, which are closed to press the folded portions into fins. In an alternate embodiment for forming outwardly extending fins, pairs of movable plates are positioned between stationary segments.
    Type: Grant
    Filed: June 21, 1993
    Date of Patent: June 4, 1996
    Assignees: The Family Trust U/T/A, Southpac Trust International, Inc.
    Inventors: Donald E. Weder, Franklin J. Craig, Joseph G. Straeter
  • Patent number: 5419486
    Abstract: A multi-sided container for storing and heating food prepared from a blank of paperboard includes a bottom panel and upstanding end, corner and side walls. A first set of angular panels are connected to the corner walls and the base panel. The first angular panels overlap and are bonded to the base panel. A second set of angular panels are connected to the first angular panels and to the end walls. The second angular panels overlap and are bonded to the end walls. Vertical flange extensions extending from the corner walls and the second angular panels overlap and are bonded together with the raw edges facing away from the container.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: May 30, 1995
    Assignee: Universal Packaging Corporation
    Inventors: Darrell K. Bennett, Robert G. Tomich
  • Patent number: 5324250
    Abstract: An apparatus and method for folding the bottom panels of a carton blank that includes side walls, first and third bottom panels extending from opposite side walls, second and fourth bottom panels extending from opposite side walls, and a bottom panel flap extending from the third bottom panel. The apparatus includes a frame, a rotatable supporting assembly, two rotatable folding fingers mounted on the frame for inwardly folding the second and fourth bottom panels, a tuck folder mounted on the rotatable mounting assembly for inwardly folding the third bottom panel, a guide mounted on the frame for contacting and inwardly folding the first bottom panel, and a bending member mounted on the rotatable supporting assembly for outwardly folding the bottom panel flap. One portion of the bending member is curved to define a concave surface that faces the tuck folder. The bending member can also be provided with a convex surface positioned on each side of the concave surface.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: June 28, 1994
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventors: Magnus Janson, Jonny Olander
  • Patent number: 5313767
    Abstract: A machine for and a step by step method of forming packages or containers from blanks, heat sealing the sides of the packages and depositing the packages in fixtures, retaining the packages in fixtures during dosing of the packages with product, heat sealing the tops of the packages and ejecting the packages from the fixtures. The sides of a newly formed package are heat sealed through apertures in the forming die before the package is placed in the fixture. Once placed in the fixture at the forming station, the package remains in the fixture during the filling or dosing of product at the filling station and as indexed into the top sealing station. At the top sealing station the filled package is partially elevated from the fixture to expose the entire top of the package for heat sealing.
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: May 24, 1994
    Inventor: Aliseo Gentile
  • Patent number: 5295941
    Abstract: An apparatus for producing containers made of paper-base laminate, the apparatus comprising: an intermittently drivable rotor 42 having radial mandrels 43 each adapted to support a tubular container blank of square to rectangular cross section as fitted therearound, the mandrels 43 being so arranged as to successively stop at each of processing stations I to VI including a pressure bonding station V, and a bottom bonding unit 48 disposed at the pressure bonding station V, each of the mandrels 43 having in a forward end face 54 thereof a groove 55 for forming the recess 36, the bottom bonding unit 48 comprising a bonding member 52 having a pressing face 56, the pressing face 56 being opposed to the forward end face 54 of the mandrel 43 as stopped at the pressure bonding station V, the pressing face 56 being provided with a ridge 57 corresponding to the groove 55.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: March 22, 1994
    Assignee: Shikoku Kakoki Co., Ltd.
    Inventors: Yasuji Fujikawa, Kazuo Abe, Shoji Hirose, Shoji Nishioka
  • Patent number: 5286247
    Abstract: An apparatus and method for forming a sheet of material into a flower pot or flower pot cover with fins. The apparatus comprises a male mold, a female mold having an opening mating with the male mold, and means for moving the male mold into and out of the opening of the female mold with the sheet of material between the two molds. To form outwardly extending fins in the flower pot cover, fingers are extended from the male mold to push folds in the sheet of material between segments of the female mold. The female segments are closed on the folds to form fins in the sheet of material as the male mold is pressed into the female mold to make the flower pot cover. To form inwardly extending fins, fingers are moved between the female segments to push folds in the sheet of material between segments of the male mold. The segments of the male mold close on the folds to form fins in the sheet of the material as the male mold is pressed into the female mold to make the flower pot cover.
    Type: Grant
    Filed: April 7, 1993
    Date of Patent: February 15, 1994
    Assignee: Highland Supply Corporation
    Inventors: Donald E. Weder, Joseph G. Straeter
  • Patent number: 5241802
    Abstract: A package in form of a box for airtightly and liquidtightly containing contents such as liquids is folded from a sheetlike blank. In a first step the box is folded to a tubular sleeve being joint along an lapping joint (7), the box innerside being covered by a liquidtight layer, preferably a plastic material. The box comprises both a lock and a bottom providing folding tongues projecting from each wall at the corresponding ends of the box. A sealing foil (5) is applied over the opening of at least one end of the box, the foil (5) being sealed at both the folding tongues and the box corner portions. The folding tongue or tongues, over which the lapping joint is stretching consists of two tongue parts (9, 10) partly lapping each other. The (10) of these tongue parts (9, 10) lying outside of the other tongue part (9) is provided with a folding edge (6) joining the other tongue part final edge.
    Type: Grant
    Filed: July 23, 1992
    Date of Patent: September 7, 1993
    Inventor: Stig Winterling
  • Patent number: 5221248
    Abstract: An apparatus and method for forming a sheet of material into a flower pot or flower pot cover with fins. The apparatus comprises a male mold, a female mold having an opening mating with the male mold, and means for moving the male mold into and out of the opening of the female mold with the sheet of material between the two molds. To form outwardly extending fins in the flower pot cover, fingers are extended from the male mold to push folds in the sheet of material between segments of the female mold. The female segments are closed on the folds to form fins in the sheet of material as the male mold is pressed into the female mold to make the flower pot cover. To form inwardly extending fins, fingers are moved between the female segments to push folds in the sheet of material between segments of the male mold. The segments of the male mold close on the folds to form fins in the sheet of the material as the male mold is pressed into the female mold to make the flower pot cover.
    Type: Grant
    Filed: December 10, 1991
    Date of Patent: June 22, 1993
    Assignee: Highland Supply Corporation
    Inventors: Donald E. Weder, Joseph G. Strater
  • Patent number: 5152736
    Abstract: A bottom end closure for a liquid-carrying paperboard container, wherein particular diagonal and sloped score lines are formed on the inner closure panels by modified sealing jaws, such that, upon being engaged by the sealing jaws, the score lines enhance the formation of a concave shape to the bottom end closure. The result is that the filled container will sit flat and stand erect, without any interfering downward bulging.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: October 6, 1992
    Assignee: Elopak Systems A.G.
    Inventors: Barry C. Owen, Frank D. Risko, Gregory J. Dwyer
  • Patent number: 5151074
    Abstract: A medical waste disposal container has a unitary body structure formed of a substantially flat sheet having a plurality of laminated layers of compact fiberboard, and one or more thin pliable layers of absorbtion resistant plastic material. The laminated sheet material contains a plurality of foldable sheet portions that are scored, wrapped at corners and adhesively joined together to define a bottom, sidewalls and a top of the body structure. The top has an opening, that is closeable by way of a flap formed in the sheet material, for insertion of discarded medical waste. The interior of the container is preferably coated with an absorption resistant material to effectively provide a leakproof seal at the intersections of its sidewalls and bottom.
    Type: Grant
    Filed: December 5, 1991
    Date of Patent: September 29, 1992
    Assignee: Hemox, Inc.
    Inventor: James L. Simpson
  • Patent number: 5147270
    Abstract: An apparatus for folding and joining boxes formed from flat or basically flat box material includes a device for advancing box materials from stock or storage to a device for pre-treating the box materials by heating prior to welding or by application of glue, a device for folding the box materials and holding the box materials in a folded position until a joining operation is ended, and a device for transporting the thus formed boxes to storage or the like.
    Type: Grant
    Filed: January 7, 1991
    Date of Patent: September 15, 1992
    Assignee: Norsk Hydro A.S.
    Inventor: Oddbjorn Gronnevik
  • Patent number: 5143281
    Abstract: The invention relates to a folding box of composite cardboard material coated heat sealably at least on the inside, which has a flat bottom to which two pairs of opposite triangular folding pockets are sealed lying flat. To prevent bubble formation on the inside of the package, more particularly those areas of the triangular folding pockets which are to be sealed to one another over their complete surface, due to steam forming in the composite cardboard material during the heat activation of the areas, the heat sealable coating is perforated right into the cardboard in the areas.
    Type: Grant
    Filed: December 10, 1991
    Date of Patent: September 1, 1992
    Assignee: PKL Verpackungssysteme GmbH
    Inventors: Hans-Willi Mainz, Lutz Schneider
  • Patent number: 5135463
    Abstract: A pressure pad is provided for bottom sealing of a gable carton. The pressure pad cooperates with a mandrel which is urged into an opened-top gable carton for sealing the carton bottom. The pressure pad is provided with a sealing bar matrix which is disposed thereon to register with at least selected raw edges of paperboard material on the carton bottom. Each sealing bar functions to compress the fibrous paperboard material from which the carton is formed to render the raw edges less likely to absorb liquids that may be wicked from the raw edges to other locations in the carton. The carton formed by the pressure pad is characterized by reduced thickness raw edges adjacent the bottom.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: August 4, 1992
    Assignee: Champion International Corporation
    Inventor: Kenneth J. Hyduk
  • Patent number: 5125886
    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.
    Type: Grant
    Filed: December 15, 1989
    Date of Patent: June 30, 1992
    Assignee: The Procter & Gamble Company
    Inventor: William P. Dirksing
  • Patent number: 5021040
    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.
    Type: Grant
    Filed: May 21, 1987
    Date of Patent: June 4, 1991
    Inventor: Robert D. Phillips