Including Application Of Heat Patents (Class 493/341)
  • Patent number: 10961646
    Abstract: A strip is fastened to an edge of a textile piece by first advancing strip of the ribbon in a direction parallel to the strip of ribbon from a supply. Then a leading end of the strip is gripped a first nip point while advancing additional ribbon from the ribbon supply. The strip is then gripped at a second nip point upstream of the first nip point at a trailing end of the strip. The ribbon is then severed upstream in the strip-travel direction of the second nip point to separate the strip from the ribbon into a sufficient length between the first nip point and the second nip points. The leading or trailing end is then pivoted about at least one pivot axis relative to the other end and positioned near or on the other end, which is then fastened to the edge of the textile piece.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: March 30, 2021
    Assignee: SCHMALE-HOLDING GMBH & CO.
    Inventor: Peter Reinders
  • Publication number: 20150063895
    Abstract: A fragrance sampler having an integral applicator is disclosed in which the sampler comprises a top ply having an upper surface and a lower surface, a mid ply having an upper surface, an outer perimeter edge, a back surface, a well formed therein, a bead of adhesive surrounding the well, and an area between the bead of adhesive and the outer perimeter edge, a non-woven material applicator having a sample material incorporated therein with the applicator being sized and shaped to fit within the well, and a bottom ply having a front surface and a back surface.
    Type: Application
    Filed: August 7, 2014
    Publication date: March 5, 2015
    Inventor: Sven Dobler
  • Patent number: 8257236
    Abstract: A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a first sealing zone, and an adjacent weakening zone. The weakening zone may be a heated perforator, includes a heating wire, or be disposed to create an auxiliary sealed area. The heating wire can have, connected thereto, a source of power that is at an adjustable voltage or magnitude, and/or pulsed, and/or a feedback loop. The heating wire may be an NiCr wire and make intermittent contact with the web and be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity, is a separating zone, or includes a heat film, a toothed blade, a row of pins, a source of air, or a source of vacuum. The sealing zones may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: September 4, 2012
    Assignee: CMD Corporation
    Inventors: Paul A. Selle, Kenneth C. Radtke, Charles H. Sauder, Paul A. Johnson, Christopher Lee White, Arvid R. Johnson, Gregory T. Prellwitz, Michael J. Stickney, Thomas C. Jansen, Christopher A. Saucier, Terry L. Leitzke, Bradley J. Schmoll
  • Publication number: 20120220439
    Abstract: This invention relates to a method for sealing film layers to form a sealed portion and a notch within the sealed portion, comprising: providing film layers between sealing jaws comprising a heat sealing element, with a sealing face having a length and a protrusion extending partly along the length of its sealing face; inducing a temperature gradient along the of sealing face length, wherein the temperature proximate to the protrusion is higher than at a distance from the protrusion; closing the jaws and simultaneously clamping the film at a location adjacent to the sealing face; holding the jaws closed for a period of time; and opening the jaws to release the layers of film.
    Type: Application
    Filed: February 14, 2012
    Publication date: August 30, 2012
    Applicant: Liqui-Box Corporation
    Inventors: James William Sadler, Qin Lin, Gordon Charles Bird, Victor Wayne McCarron
  • Patent number: 8038826
    Abstract: An improved tabbed divider making apparatus is disclosed. The machine preferably improves upon existing tabbed divider making machines in its ease of use and efficiency. Among other elements, the machine may include a paper feeder, a processing section, and an output tray. An improved film delivery system is also disclosed, as well as methods relating to manufacturing of tabbed dividers.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: October 18, 2011
    Assignee: Scott Office Systems, LLC
    Inventors: Mark Kucera, Kevin Hartnett, Thomas J. Richmond
  • Patent number: 8012076
    Abstract: A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a first sealing zone, and an adjacent weakening zone. The weakening zone may be a heated perforator, includes a heating wire, or be disposed to create an auxiliary sealed area. The heating wire can have, connected thereto, a source of power that is at an adjustable voltage or magnitude, and/or pulsed, and/or a feedback loop. The heating wire may be an NiCr wire and make intermittent contact with the web and be disposed in an insert. The weakening zone may create a line of weakness that is uniform or varies in intensity, is a separating zone, or includes a heat film, a toothed blade, a row of pins, a source of air, or a source of vacuum. The sealing zones may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: September 6, 2011
    Assignee: CMD Corporation
    Inventors: Paul A. Selle, Kenneth C. Radtke, Charles H. Sauder, Paul A. Johnson, Christopher Lee White, Arvid R. Johnson, Gregory T. Prellwitz, Michael J. Stickney, Thomas C. Jansen, Christopher A. Saucier, Terry L. Leitzke, Bradley J. Schmoll
  • Patent number: 7954303
    Abstract: A machine for covering articles with sheets of plastic material. The machine includes a device suitable for cutting and sealing the sheets that cooperate with a work plane and a guide suitable for arranging a roll of a continuous sheet of plastic material in a suitable position for unrolling subsequent portions of the continuous sheet and the positioning thereof on the work plane.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: June 7, 2011
    Assignee: Colibri' System S.p.A.
    Inventor: Aldo Farneti
  • Publication number: 20110079637
    Abstract: A partition assembly comprising a partition matrix made up of intersecting first and second slotted partitions, each of the partitions having at least one slot and a rounded edge. The slots of the partitions are engaged with each other at a plurality of intersections. The partitions are made by rounding an edge of a multi-layered blank using a rotatable tool and then cutting the partition material to a desired size. Slots may then be formed in the edge sealed material.
    Type: Application
    Filed: October 7, 2009
    Publication date: April 7, 2011
    Applicant: Bradford Company
    Inventor: William J. Vroon
  • Patent number: 7750269
    Abstract: A fastener includes first and second tracks. The first track includes a first profile, and the second track includes a second profile for interlocking with the first profile. The fastener extends between opposing ends. The first and second profiles at each of the opposing ends are sealed to each other using a laser. In one embodiment, the fastener is initially continuous and is subsequently divided into segments by simultaneously cutting and sealing the fastener at spaced target locations using the laser. The segments are associated with respective plastic bags. At each of the target locations, the laser directs a laser beam at the fastener such that the laser beam cuts through the first and second profiles and simultaneously seals the first and second profiles to each other on opposite sides of the cut. The seals on the opposite sides of the cut terminate respective ends of adjacent ones of the segments.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: July 6, 2010
    Assignee: Pactiv Corporation
    Inventors: Ian J. Barclay, Michael W. McManus, Dana A. Marshall
  • Publication number: 20090270237
    Abstract: Disclosed is a tabbed divider making apparatus preferably adapted for use with smaller, more individualized jobs in an office or the like. The apparatus preferably includes a paper feeder, a film provider, a knife package for shearing a portion of the paper to create a tab, at least one strut, a pivotable arm, at least one spring, and a cam having an oblong shape. The rotation of the cam preferably causes movement between loaded and unloaded positions of the spring, which causes the knife package to shear the paper. Also disclosed is a removable film cartridge for use with the apparatus. The cartridge preferably includes a housing, a roll of film, one or more rollers, a creasing finger for creasing the film, and two or more opposed extensions for folding the film along the crease. Further disclosed is a method of producing a tabbed divider utilizing the above-mentioned apparatus.
    Type: Application
    Filed: February 12, 2009
    Publication date: October 29, 2009
    Applicant: SCOTT OFFICE SYSTEMS LLC
    Inventors: Mark Kucera, Kevin Hartnett
  • Publication number: 20090230078
    Abstract: A venting liner is connectable in fluid communication between a closure and an interior of a device for venting gas from the interior into the ambient atmosphere. The venting liner has a first fluid impervious and gas permeable outer layer, a second relatively rigid and substantially incompressible outer layer defining an open cell structure, and an inner foam layer defining an inner surface and an outer surface, a plurality of fluid-flow apertures spaced relative to each other, extending between the inner and outer surfaces, and forming substantially vertical fluid-flow paths through the inner layer. The first outer layer is in fluid communication with the interior of the device for venting gas through the interior of the first outer layer, substantially vertically through the apertures and, in turn, through the interior open cell structure of the second outer layer and into the ambient atmosphere.
    Type: Application
    Filed: March 11, 2009
    Publication date: September 17, 2009
    Inventor: Edward D. Walsh
  • Publication number: 20090159484
    Abstract: The invention relates to a bag-stack and a device for the production of bag-stacks, in particular bags for automated machines, wherein the bag stack is formed from a plurality of connected bags made of plastic foil, and wherein each bag is formed from a front wall and a back wall. The back wall is built longer than the front wall in the area of an opening. The bag stack is welded at the back wall to the longer end of the front wall, wherein the bag-stack exhibits at least three welds, distributed over the width of the bag stack at the longer end of the back wall in such a way that a sturdy edge of the bag-stack is formed.
    Type: Application
    Filed: December 29, 2008
    Publication date: June 25, 2009
    Inventors: Armin MEYER, Jakob Schneider
  • Publication number: 20090048085
    Abstract: An apparatus for manufacturing dunnage including a plurality of rollers for pulling a web of material through the machine, a nozzle with at least one port through which gas or liquid flows, a plurality of ceramic elements in opposing positions such that the web of material can pass between the plurality of ceramic elements. A heating element is routed through each of the plurality of ceramic elements such that heat will radiate through openings in the top surfaces of the ceramic elements that will melt the portion of the material that is passing between the opposing ceramic elements. The apparatus may be equipped to manufacture multiple pieces of dunnage simultaneously.
    Type: Application
    Filed: August 13, 2007
    Publication date: February 19, 2009
    Inventor: Ralph Eibert
  • Patent number: 7367931
    Abstract: The present invention contemplates a machine and method for performing the laser sealing and laser cutting of flexible material into segments, such as a polymeric web in which the segments will ultimately be individual bags. The machine includes a generally cylindrical drum having openings on an exterior surface. A laser produces a laser beam that contacts the flexible material while the flexible material is being held on the drum. The drum is preferably comprised of drum sections that can be independently moved in the radial direction. The machine includes a cam system causing the drum sections to be sequentially moved in the radial direction. Typically, this radial movement is for the purpose of releasing the individual segments of the flexible material that have been cut by the laser.
    Type: Grant
    Filed: May 3, 2004
    Date of Patent: May 6, 2008
    Assignee: Pactiv Corporation
    Inventors: Ian J. Barclay, Michael W. McManus, Mark F. Kozlowski
  • Patent number: 7000369
    Abstract: The invention concerns packaging of products on sale outlets. It concerns a feed roll for heat sealing package tubing reel (11), comprising a body (3) provided with, in particular: means (4) supporting at least one reel (2) of package tubing (11); an outlet head (5) for the tubing including: at least an outlet window (10) for the tubing, means for cutting (15) the tubing, means for welding (16) the tubing, means (6) guiding the tubing between the reel (2) and the outlet head (5). The invention is useful for supplying and welding a heat sealing tubing in a fish market.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: February 21, 2006
    Assignee: Papiers A Paviot
    Inventor: Alexandre Paviot
  • Patent number: 6554182
    Abstract: The disclosure relates to a packaging container for long-term cold storage of liquid foods for retaining superior flavor and aroma properties in the packed product, and produced from a packaging laminate including a core layer of paper or paper-board, an inside aroma barrier layer of PET and a gas barrier layer, by fold formation and sealing of a planar packaging blank so that all contact surfaces vis-a-vis the packed product consist of the PET layer. The disclosure also relates to a method of fold forming and sealing the packaging laminate into a packaging container according to the invention. Good shelf-life after cold storage for at least six weeks at 8° C., or at least 10 weeks at 4° C. will be attained using the packaging container according to the invention.
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: April 29, 2003
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventors: Tommy Magnusson, Rolf Borgström
  • Publication number: 20020004442
    Abstract: A low thermal inertia die (10) must be heated to a specific set temperature to cut/seal plastics material. As heat energy is dissipated during cutting/sealing it is replaced by an equivalent amount of thermal energy from an electrical heating element (26) embedded in the die, adjacent the profiled working face (22) which in use contacts plastics material. The element (26) is covered in electrically non-conductive tape (28) and encased in flattened steel tube (30). A thermocouple (32) is also embedded in the die (10), with its tip (34) located to sense the temperature of a central region of the working face (22). The electrical current supplied to the electrical resistance heating element (26) is controlled in dependence upon the temperature sensed.
    Type: Application
    Filed: March 5, 1999
    Publication date: January 10, 2002
    Inventors: PETER ARTHUR BELL, ANDREW PAUL SEARS, DAVID FREDERICK LINES
  • Patent number: 6254521
    Abstract: A flat plastic bag is formed from a side gusseted tubular web. The bag is formed with an open end and a opposite spaced end seal. Hinge crease patterns are formed in each of the gusseted portions at the bottom end of the bag. The pattern includes a two ridge upper leg and a three ridge bottom leg which are formed by a cold sealing process. A bag making machine includes a web supply which is passed through a web feed supply section to form the gusseted web. The gusseted web is sent through a forming section. The segment is first formed with the patterns of two bags in immediately adjacent relationship and located to the opposite sides of a common line defining the end of the adjacent bags. The web is formed into two bag segments with the creases located at each of the segment ends. The web is passed through a unit creating the seal and simultaneously severing the upstream segment.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: July 3, 2001
    Assignee: Amplas, Inc.
    Inventors: Donald J. Pansier, Troy D. Konitzer, Peter J. Claybaker, Michael P. Ireton, Robert Dematteis, Giles R. Blaser
  • Patent number: 6168558
    Abstract: Method and device for producing rolls (17) of bags. At least one longitudinal side edge (15, 16) of a line of overlapping bags (17) is folded towards the centre axis of said line of bags. The line is then winded to rolls (17).
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: January 2, 2001
    Assignee: FAS Converting Machinery AB
    Inventor: Kenneth Vinberg
  • Patent number: 6095959
    Abstract: In a method and unit for feeding, in a product wrapping machine, a continuous band of wrapping material, the surface of which is pre-impregnated with an aromatizing substance, the band is unwound from a reel of wrapping material and is fed, along a given path, to a cutting station where the band is cut into lengths, each defining a sheet of wrapping material for a relative product; along the path there is a device for cleaning the band, designed to remove the aromatizing substance from a given portion of the band.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: August 1, 2000
    Assignee: G.D S.p.A.
    Inventors: Fausto Negrini, Giuliano Corazza
  • Patent number: 6007468
    Abstract: An apparatus is described for forming a web (N) that is permeable to liquids and designed to separate two environments and to allow the liquid to flow in one direction from one of said environments to the other, in which said web is caused to pass between two contra-rotating cylinders (5, 7) that are pressed against each other, one of said cylinders (7) having a surface provided with projections which cause perforations in said web (N). The cylinder (7) with the projections is turned at a peripheral speed greater than the peripheral speed of the other cylinder (5), with a consequent relative slipping action between the surfaces of the two cylinders (5, 7).
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: December 28, 1999
    Assignee: Pantex S.r.l.
    Inventor: Claudio Giacometti
  • Patent number: 5816990
    Abstract: Apparatus is disclosed for producing discrete packages which can be individually varied in length so that they can be used for packaging articles such as cuts of meat which vary in length. The apparatus comprises drive rolls for feeding a flat tube of plastics packaging material through a cut off device. The apparatus may also comprise a heat sealing device (to form the tube into a bag) and a blower head combined with a suction device which opens the leading portion of the bag to facilitate the placing of an article in the bag. A proximity sensor is provided adjacent the cut off device and immobilises the drive rolls when it detects the arrival of a leading portion. In one form of the apparatus the sensor is mounted on a movable carriage which can be quickly moved by hand or by a ram.
    Type: Grant
    Filed: November 5, 1996
    Date of Patent: October 6, 1998
    Assignee: Machinery Developments Limited
    Inventor: Richard Archer Melville
  • Patent number: 5618252
    Abstract: Apparatus is disclosed for producing discrete packages which can be individually varied in length so that they can be used for packaging articles such as cuts of meat which vary in length. The apparatus comprises drive rolls for feeding a flat tube of plastics packaging material through a cut off device. The apparatus may also comprise a heat sealing device (to form the tube into a bag) and a blower head combined with a suction device which opens the leading portion of the bag to facilitate the placing of an article in the bag. A proximity sensor is provided adjacent the cut off device and immobilizes the drive rolls when it detects the arrival of a loading portion. In one form of the apparatus the sensor is mounted on a movable carriage which can be quickly moved by hand or by a ram.
    Type: Grant
    Filed: February 17, 1994
    Date of Patent: April 8, 1997
    Assignee: Machinery Developments Limited
    Inventor: Richard A. Melville
  • Patent number: 5509884
    Abstract: A plastic carrier for carrying containers includes container engaging portions which extend from a joint. The joint is at adjacent edges of the container engaging portions. The container engaging portions include a plurality of annular bands for securely holding containers therein. The joint is formed by bonding the layers of plastic material between the edges of the container engaging portions. The joint is interrupted along its length to enable the joint and container engaging portions to stretch when containers are placed in the carrier. The carrier may include a handle portion which extends from the joint for carrying the containers.
    Type: Grant
    Filed: March 15, 1995
    Date of Patent: April 23, 1996
    Assignee: Illinois Tool Works Inc.
    Inventor: James A. Broskow
  • Patent number: 5393293
    Abstract: Bag making apparatus and method for forming a handle opening in a thermoplastic food packaging shrink bag includes both cold cutting and hot cut cutting operations to form a handle which, on heat shrinking the bag, is strong and has an enhanced appearance.
    Type: Grant
    Filed: March 18, 1994
    Date of Patent: February 28, 1995
    Assignee: Viskase Corporation
    Inventors: Philip F. Cilia, Vytautas Kupcikevicius
  • Patent number: 5318499
    Abstract: An easy-open, spiral wound container for packaging refrigerated dough products includes a spirally wound fibrous core layer, forming an unbonded spiral butt joint. The container also includes an inner liner layer and an outer label layer, each having a seam. The outer label layer is weakened along the butt joint to facilitate opening of the container. An end closure member seals an end of the container.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: June 7, 1994
    Assignee: The Pillsbury Company
    Inventors: Michael J. Rice, Gregory P. Holl, Robert A. Strange
  • Patent number: 5232430
    Abstract: A piercing blade for perforating slits in a continuous tubular web of thermo-plastic material is shown. The blade is used in a machine to form individual bags from the tube by heat sealing the bottom and perforating the top of the next bag. The piercing teeth in the blade have formed in the front face a number of horizontal grooves which serve to pick up the edge of the top layer of the slit to form a burr thereon and thus separate the two plys of the tubular web, facilitating the opening of the top of the bag when it is separated from the roll of continuous tubular material.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: August 3, 1993
    Inventor: J. Leonard Nitsch
  • Patent number: 5201697
    Abstract: Wrappings from thin pleated sheets are made from a continuous thin paper tape and the like by first making transversal folds in the tapes to form pleats, fixing the edges of the pleats and then folding the fixed edges to form hems. The hemmed pleated tape may then be cut into individual wrappings. The paper tape is coated with heat-setting material so that the pleats can be fixed by melting and resetting this material.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: April 13, 1993
    Assignees: Gilbert Capy, Akiva Buchberg
    Inventor: Gilbert Capy
  • Patent number: 5129875
    Abstract: This invention is related to a manufacturing process of covering foils of packing boxes extending over at least one edge of the box. The process comprises the steps of cutting slots in a film (3) of rigid transparent material, of glueing a film (4) of flexible transparent plastic material to the prepared film, and of cutting covering foils from the resulting composite material.This invention is also related to the foils made in this way and to the packing boxes provided with such covering foils for the windows.
    Type: Grant
    Filed: July 24, 1990
    Date of Patent: July 14, 1992
    Inventor: Francois Chaygneaud-Dupuy
  • Patent number: 5098365
    Abstract: A method is disclosed of attaching a gripping device to a sheet of packaging material that is to be formed into a container includes the steps of forming a hole in the sheet of packaging material, inserting an anchorage device in the hole, sealing the anchorage device to the sheet of packaging material in a liquid-tight manner and fixedly connecting a gripping device to the anchorage device.
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: March 24, 1992
    Assignee: AB Profor
    Inventor: Stig Lilja
  • Patent number: 5019028
    Abstract: Tublar workpieces are formed with perforations of desired size and/or shape by repeatedly piercing selected portions of the workpieces by needles, pins or analogous piercing tools. The tools can be stationary while the workpieces roll therealong, or the workpieces can rotate while coming into repeated engagement with one or more sets of orbiting tools. The frequency and the number of penetrations of tools into selected portions of the workpieces are selected with a view to heat the tools as a result of frictional engagement with the material of the workpieces, i.e., as a result of repeated penetration into and extraction from selected portions of a rotating or rotating and rolling and/or axially moving workpiece. This enhances the making of predictable perforations in tubular workpieces, especially workpieces which consist of a synthetic thermoplastic material, such as bobbins for the storage of textile yarns.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: May 28, 1991
    Assignee: Adalbert (Lorrach) Engel
    Inventors: Adalbert Engel, Christoph Engel, Uta-Marie Engel
  • Patent number: 5001325
    Abstract: A method of providing score lines in packaging material by local evaporation using a laser beam, wherein the laser beam and the packaging material are movable relative to each other. The score lines are provided in a recurring pattern on at least one side of a web of packaging material as it advances at a uniform, adjustable speed. The intensity of the laser beam is adjustable, and the laser beam is moved in two mutually perpendicular directions under the control of pattern-dependent signals.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: March 19, 1991
    Assignee: LPF Verpakkingen B.V.
    Inventor: Gert J. Huizinga
  • Patent number: 4997416
    Abstract: An improved method of making a stand-up plastic bag in which heated pins are used to seal the gusset walls. The pins are heated at a temperature lower than melting point of the thermoplastic which forms the exterior contiguous portions of the gusset walls. The method includes the steps of supplying the film, folding the film to form the gusset, forming the heat seals for the gusset walls and the heat seals for the side seams at one temperature, forming the heat seals joining the gusset walls together at the same temperature using a heated pin seal bar, and separating the film into completed bags. The improved method provides greater efficiency and increased production rates.
    Type: Grant
    Filed: June 5, 1990
    Date of Patent: March 5, 1991
    Assignee: Dow Brands Inc.
    Inventors: David W. Mitchell, Roger D. Vrooman
  • Patent number: 4946432
    Abstract: The invention consists of a device for welding and perforating a thermoplastic film folded back on itself. The device consists of a support for supporting two electrically heated welding strips and a perforation device. The perforation device is movably supported between the welding strips. The support is transversely movable with respect to the film. The welding strips consists of a non-heating portion and a heating portion. The non-heating portion is at least equal in length to the heating portion.
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: August 7, 1990
    Assignee: Baxter International Inc.
    Inventors: Etienne Susini, Pierre Soubrier
  • Patent number: 4902269
    Abstract: Device for welding a mouthpiece to a thermoplastic film comprising a frame, a support plate carried by the frame and moveable with respect to the latter, a welding head rigidly connected to the support plate, and at least one annular heating resistance carried by the welding head and having electric supply rods arranged at two diametrically opposite points. The device comprises diffusion means for diffusing a cooling gas at the vicinity of the fixation of the supply rods to the heating resistance; preferably, the cooling gas diffusion means comprise channels extending in the welding head and surrounding the supply rods.The invention also relates to the mounting of the welding device on a moveable frame and its association with a film blocking device.
    Type: Grant
    Filed: March 2, 1988
    Date of Patent: February 20, 1990
    Assignee: Baxter International Inc.
    Inventors: Etienne Susini, Pierre Soubrier
  • Patent number: 4860621
    Abstract: According to the invention, a heat knife 1 is spaced from and disposed parallel to an arm 8 for holding the heat knife 1. A plurality of spacers 11 and a plurality of pull bolts 10 are installed between the heat knife 1 and the arm 8. The pull bolts 10 is adapted to connect the heat knife 1 to the arm 8 and pull the heat knife 1 toward the arm 8 to reduce the distance therebetween and clamp the spacers 11 between the heat knife 1 and the arm 8, whereby the heat knife 1 and the arm 8 are held parallel to each other.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: August 29, 1989
    Assignee: Totani Giken Kogyo Co., Ltd.
    Inventor: Mikio Totani
  • Patent number: 4786275
    Abstract: A method of forming a severable compartmented T-shirt bag comprising heat welding overlying lengths of a flattened tubular web of thermoplastic material centrally therealong to define a compartment to each side of the heat welding and a side edge seam for each compartment, slitting the web material between the compartments and formed seams, and reengaging the seams and forming a tack joinder therebetween to define a line of severance. The method also including the steps of transversely seaming the lengths of web material into individual bag units and forming a central cutout area in each bag unit to define a bag mouth with a handle to each side of the severance line.
    Type: Grant
    Filed: May 1, 1987
    Date of Patent: November 22, 1988
    Assignee: Sonoco Products Company
    Inventor: Gregory A. Hoover
  • Patent number: 4762514
    Abstract: A method of making a beverage packaging bag made of at least one laminar panel which has an inner layer and an outer layer with appropriate portions of the laminar panel bonded and thus sealed together by heating and a plurality of cuts provided in the outer layer to facilitate piercing of a straw through the panel, by directing a laser beam through a mask at the bag.
    Type: Grant
    Filed: August 12, 1987
    Date of Patent: August 9, 1988
    Assignee: Fujimori Kogyo Co., Ltd.
    Inventor: Tokio Yoshida, deceased
  • Patent number: 4642086
    Abstract: There is provided an improved apparatus for forming foldable box blanks from a thermoplastic sheet by forming flexible fold lines in the thermoplastic sheet, with the apparatus including a plurality of scoring tools and a flat plate having a plurality of grooves formed therein opposite to the scoring tools. In addition, the apparatus includes means for heating the scoring tools to less than the melting temperature of the thermoplastic sheet. In this manner, when the heated scoring tools engage the thermoplastic sheet, it is deformed on its upper surface by the scoring tools and on its lower surface by the grooves in the grooved plate to form a plastic sheet having the desired flexible fold lines.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: February 10, 1987
    Assignee: Transparent Packaging Corp.
    Inventor: Robert A. Howarth, Jr.
  • Patent number: 4610653
    Abstract: A hot wire has one end mounted on a pivotally supported arm which is biased to keep the wire straight and taut. The end of the wire is bent to an L-shape and is rigidly attached to the arm. Between the bend and the point of attachment, the wire is formed with a flexible portion which expands and contracts to compensate for pivotal movement of the support arm.
    Type: Grant
    Filed: May 1, 1985
    Date of Patent: September 9, 1986
    Assignee: Union Carbide Corporation
    Inventor: Peter P. Savich
  • 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: 4318768
    Abstract: Slit-sealing apparatus for high density plastic sheets is disclosed. The sheets to be slit-sealed are passed over rollers, at least one of the rollers having a brake so that the plastic is put in tension. A curved tensioning bar is urged against the sheets to deflect the sheets and increase the tension, tension being greater in the area to be slit. Slitting is accomplished by an elongate knife blade angularly disposed with respect to the web of material so that the material is slit, then the material drags along the sides of the knife blade. The knife is heated to seal the edges, and the slit edges are held in tension until they reach the next roll. The sealed edges are then heated for final setting to achieve a strong seal.
    Type: Grant
    Filed: October 24, 1980
    Date of Patent: March 9, 1982
    Inventor: James R. Johnson
  • Patent number: 4290763
    Abstract: A method for producing an enclosed, multipaneled envelope from webs of material in a manner such that the desired multipaneled shape of the envelope can be formed by a single peripheral application of a platen sealing device to positioned webs comprising a first web, and second web with at least one folded web interposed therebetween. Both geometric and nongeometric multipaneled envelopes can be produced in this manner from materials suitable for filling with a lighter-than-air gas to form toy balloons and the like.
    Type: Grant
    Filed: June 15, 1979
    Date of Patent: September 22, 1981
    Inventor: Gerald L. Hurst