Comprising Means To Force Heated Fluid To Contact Cover Patents (Class 53/373.9)
  • Patent number: 8850778
    Abstract: A method and apparatus for sealing a bag made of a polymeric material by applying heat activated layers on different portions of the bag, wherein the first adhesive layer and the second adhesive layer have respective heat activation temperatures below the softening point temperature of the polymeric material; after creasing the bag along a fold line, applying heat at a temperature below the softening point temperature of the polymeric material to activate the first adhesive layer and the second adhesive layer to adhesive states after the bag has been filled with contents; and folding the bag to form an adhesive-to adhesive seal by contact between the heat activated first adhesive layer and the heat activated second adhesive layer.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: October 7, 2014
    Assignee: Coating Excellence International LLC
    Inventor: Mark E. Jansen
  • Patent number: 8443578
    Abstract: A method and apparatus for sealing a bag made of a polymeric material by applying heat activated layers on different portions of the bag, wherein the first adhesive layer and the second adhesive layer have respective heat activation temperatures below the softening point temperature of the polymeric material; creasing the bag along a fold line, applying heat at a temperature below the softening point temperature of the polymeric material to activate the first adhesive layer and the second adhesive layer to adhesive states after the bag has been filled with contents; and folding the bag to form an adhesive-to adhesive seal by contact between the heat activated first adhesive layer and the heat activated second adhesive layer.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: May 21, 2013
    Assignee: Coating Excellence International LLC
    Inventors: Gary F. Sargin, Mark E. Jansen
  • Patent number: 7726103
    Abstract: A resilient backing member for use in cooperation with an impulse heating element comprises a resilient body having a longitudinal shoulder surface and a longitudinal intermittent raised edge protruding from the shoulder surface. The resilient backing member is for use in cooperation with an impulse heating element for sealing layers of thermoplastic film together and for either forming a sealed portion on the film, a rupturable portion on the film or severing the film. Accordingly, the resilient backing member can be used on a pouch filling machine to produce a string of sealed pouches connected by a rupturable portion or a sealed portion, and filled with flowable material without the use of a separate cutting blade.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: June 1, 2010
    Assignee: Liqui-Box Canada Inc.
    Inventor: Stephan J. Chapougnot
  • Patent number: 7464518
    Abstract: A method of verifying seal quality of a packaging material includes providing packaging material, and applying a thermochromic ink to at least one portion of the packaging material. The method also includes applying heat to the at least one portion of packaging material to form a seal, and inspecting the packaging material to determine the quality of the seal.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: December 16, 2008
    Assignee: Robert Bosch GmbH
    Inventor: Detlev D. Ansinn
  • Patent number: 7021032
    Abstract: The invention provides tube-filling machines and methods for, in such machines, end sealing of double tubes (10), that is to say the tube type which has concentric packing tubes (11, 12) which are connected to a common tube shoulder (13) provided with a dispensing opening. The invention provides a two-part hot-gas nozzle (22) with individual supply of hot gas to the inner side of the inner tube and the outer tube for thermal activation of the scaling end of the double tube intended for heat sealing.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: April 4, 2006
    Assignee: Norden Pac Development AB
    Inventor: Hans Linnér
  • Patent number: 6871475
    Abstract: In a machine for making filter bags for infusion products, a flattened tube (34) is used which is made from a web (17) of filter paper that: is heat-sealable by thermal reactivation of a layer of glue; is fed continuously in the horizontal position; has individual charges (19) of the infusion product placed on its top surface at suitable intervals; and, lastly, is gradually folded onto itself until its longitudinal edges (18) are juxtaposed. An apparatus (250) for sealing the tube (34) comprises an operator block (94) bearing two rows (251) of emitters (96) designed to give off a gaseous fluid heated to a suitable temperature. The operator block (94), accommodated inside the tube (34) with the emitters (96) aligned and juxtaposed with the edges (18), directs the fluid against internal faces (97) of the tube (34) directly at the layer of glue on the web (17) which is simultaneously folded around the operator block (94) itself.
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: March 29, 2005
    Assignee: Tecnomeccanica S.r.L.
    Inventor: Andrea Romagnoli
  • Patent number: 6705062
    Abstract: A packaging machine for filling and sealing receptacles, the machine having a plurality of stations at which packaging operations are performed by packaging devices (21-29), the stations having at least a filling station (21) and a sealing station (23, 24, 27). The packaging machine includes a conveyor (10) for causing the receptacles to travel along a path passing through the various stations, the packaging machine being characterized in that the stations are disposed in an enclosure (2) in which a vacuum prevails.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: March 16, 2004
    Assignee: Valois S.A.
    Inventor: Jean-Pierre Varlet
  • Publication number: 20040016216
    Abstract: In a machine for making filter bags for infusion products, a flattened tube (34) is used which is made from a web (17) of filter paper that: is heat-sealable by thermal reactivation of a layer of glue; is fed continuously in the horizontal position; has individual charges (19) of the infusion product placed on its top surface at suitable intervals; and, lastly, is gradually folded onto itself until its longitudinal edges (18) are juxtaposed. An apparatus (250) for sealing the tube (34) comprises an operator block (94) bearing two rows (251) of emitters (96) designed to give off a gaseous fluid heated to a suitable temperature. The operator block (94), accommodated inside the tube (34) with the emitters (96) aligned and juxtaposed with the edges (18), directs the fluid against internal faces (97) of the tube (34) directly at the layer of glue on the web (17) which is simultaneously folded around the operator block (94) itself.
    Type: Application
    Filed: July 21, 2003
    Publication date: January 29, 2004
    Applicant: TECNOMECCANICA S.r.L.
    Inventor: Andrea Romagnoli
  • Patent number: 6655110
    Abstract: A machine 10 to aid in forming at least one flange 11 on tubular bag material 12. The machine 10 includes at least one assembly 28 provided with a longitudinally extending slot 22 through which a fold 13 passes to be heated by hot air delivered to the slot 22. A pair of pressure rollers 27 engage the heated fold 13 so that the bag material 12 of the fold 13 adheres to form the flange 11.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: December 2, 2003
    Assignee: TNA Australia Pty Limited
    Inventor: Alfred Taylor
  • Patent number: 6602174
    Abstract: A method and apparatus for sealing a drawtape to a hem of a thermoplastic film structure is disclosed. The thermoplastic film structure includes a panel, the hem, and the drawtape. The hem is formed along one end of the panel, and the drawtape is housed within the hem. In the method, the film structure is conveyed to a stationary heat sealer that includes a stationary heated block and a hot air blower spaced from the heated block. The film structure is momentarily stopped at the stationary heat sealer with hem disposed between the heated block and the hot air blower. While the film structure is stopped, the hot air blower blows heated air onto the hem to force the hem against the heated block, thereby sealing the drawtape to the hem.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: August 5, 2003
    Assignee: Pactiv Corporation
    Inventors: Gregory A. Haverfield, Gerald E. Rawlings, David A. Bryniarski
  • Publication number: 20020139083
    Abstract: A machine 10 to aid in forming at least one flange 11 on tubular bag material 12. The machine 10 includes at least one assembly 28 provided with a longitudinally extending slot 22 through which a fold 13 passes to be heated by hot air delivered to the slot 22. A pair of pressure rollers 27 engage the heated fold 13 so that the bag material 12 of the fold 13 adheres to form the flange 11.
    Type: Application
    Filed: March 21, 2002
    Publication date: October 3, 2002
    Applicant: TNA AUSTRALIA PTY LIMITED
    Inventor: Alfred Taylor
  • Patent number: 6301859
    Abstract: A heat sealer capable of providing a high sealing strength by appropriating a distribution of temperature at two sheet contact faces (19a, 19b) includes a block (31) made of a metallic material having a high rigidity and operable to heat the resinous sheet (S) while pressing the latter. The block (31) is provided with heaters (24a, 24b) therein and also with heat conducting members (33a, 33b) each having an excellent heat conductive characteristic higher than that of the metallic material. The heat conducting members (33a, 33b) are positioned between the heaters (24a, 24b) and the sheet contact faces (19a, 19b), respectively.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: October 16, 2001
    Assignee: Ishida Co., Ltd.
    Inventors: Yoshihiro Nakamura, Hiroaki Morinaka
  • Patent number: 6192660
    Abstract: An apparatus for supplying and applying cap bodies (51) to a packaging container includes a gas supplying device (11) which supplies a hydrogen-oxygen gas mixture obtained by electrolyzing water, a burner unit (22) that is connected to the gas supplying device (11) for receiving hydrogen-oxygen gas mixture from the gas supplying device (11) and burning the hydrogen-oxygen gas mixture and a pickup apparatus (80) which transports a cap body (51) to a heating position above the burner unit (22). The burner unit (22) is provided with a plurality of nozzles (31) that are arranged in a pattern that corresponds in shape to the shape of the underside periphery of the cap body (51). A shield plate (57) is positionable above the nozzles (31) to deflect the hydrogen-oxygen gas mixture emitted from the nozzles (31), and an igniter (32) is disposed adjacent one of the nozzles (31), to ignite the mixture emitted from the nozzle (31).
    Type: Grant
    Filed: June 3, 1999
    Date of Patent: February 27, 2001
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventors: Yasuyuki Moriyama, Elmar Mock, Michio Sugata, Shigeo Katsumata
  • Patent number: 6170238
    Abstract: A sealing machine and process for sealing loaded bags of a novel web of side connected bags are disclosed. The web is fed through the sealer by a pair of grooved main transport belts. A holding belt is disposed in the groove of an associated main belt and extends into the groove of the other main belt as the belts move through the seal station. Processes of transporting and sealing side connected bags are also disclosed.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: January 9, 2001
    Assignee: Automated Packaging Systems, Inc.
    Inventor: Hershey Lerner