Endless Conveyor-type Press Patents (Class 100/306)
  • Patent number: 9499289
    Abstract: A film edge sealing device is disclosed herein which has a groove defining a base. The base of the groove of the edge sealing device is oriented at a skewed angle with respect to a longitudinal direction of the conveyor of the heat sealing machine. Edges of a thermoplastic sheet or two stacked layers of thermoplastic sheets are introduced into the groove of the edge sealing device and placed in contact therewith to both heat and melt the edges of the thermoplastic sheet(s) to form a bead and join the edges thereof to form an edge bead seal.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: November 22, 2016
    Assignee: EXTREME PACKAGING MACHINERY, INC.
    Inventor: Raymond Uttaro
  • Patent number: 8528475
    Abstract: A method and apparatus for improving of wood veneer quality is provided. In the method, veneers are conveyed through a compression gap made up by two press elements, the gauge of said gap being adjustable. The method comprises the use of an endless felt assembly, which is adapted to circle around at least one of the press elements and which passes through the compression gap in such a way that at least one face of the veneer is brought against the felt assembly in said compression gap.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: September 10, 2013
    Assignee: Raute Oyj
    Inventors: Harri Lyytinen, Jarkko Kaislaoja, Andre Klemarewski
  • Patent number: 7458317
    Abstract: A press for pressing a mat into a thin panel has a press frame, upper and lower press plates on the frame, and upper and lower press belts having confronting lower and upper stretches defining a press gap extending in a horizontal and longitudinal transport direction and respectively running below and above the upper and lower press plates. Upper and lower flexible intake plates are juxtaposed respectively above and below upstream ends of the lower and upper stretches of the belts and define therewith a downstream portion of an intake mouth flaring upstream. Upper and lower rollers are respectively braced against the upper and lower stretches of the belts at an upstream portion of the intake mouth immediately upstream of the downstream portion of the intake mouth. Further actuators connected to the rollers set a shape of the upstream portion of the intake mouth.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: December 2, 2008
    Assignee: Siempelkamp Maschinen-und Anlagenbau GmbH & Co.
    Inventors: Lothar Sebastian, Klaus Schürmann, Horst Weiss, Werner Thelen, Jürgen Frigger
  • Patent number: 7237479
    Abstract: A device for successively transporting sheets in a platen press includes gripper bars with respective ends fixedly attached to two flexible of endless loop elements. Each loop element is engaged respectively with an intermittent drive wheel and at least one free wheel. A rectangular working chase and a movable platen arranged on both sides of the path of the grippers of the said bar. Nozzles are connected to a compressed air supply, for directing air jets towards the movable platen during a stopping phase of the gripper bars, in order to successively stop the sheets between the working chase and the movable platen. The nozzles are located below the transverse rear edge of the working chase.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: July 3, 2007
    Assignee: Bobst S.A.
    Inventor: Jean-Francois Pollien
  • Patent number: 7096778
    Abstract: The roller bar chains of a continuous press for producing pressed board provided sufficient play for the roller bars relative to the link chains by having the journaling pins for the link chains extending through bushings which articulate the overlapping link plates together, so that the outer diameters of the pins within these bushings are less than the inner diameters of the bushings. The result is that the roller bar chain has only a single guide plane in the press region between the two press plates.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: August 29, 2006
    Assignee: Siempelkamp Maschinen-Und Anlagenbau GmbH & Co. KG
    Inventors: Lothar Sebastian, Klaus Schürmann, Werner Gawlitta, Klaus Gerhardt
  • Patent number: 6890407
    Abstract: A method and an arrangement for manufacturing calendered paper or board particularly in the on-line manufacturing method. In the method, a base web is formed from a mixture of water and pulp supplied from the headbox and the web is dried by removing water over the press section and over the dryer section by heating. The formed web is calendered at least once to modify the surface on at least one of its sides. Before calendering the cross-direction thickness profile of the web is standardized and calendering is carried out by means of a long-nip calender, whereby good surface quality is obtained without losing the bulk or stiffness of the web.
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: May 10, 2005
    Assignee: Metso Paper, Inc.
    Inventors: Pekka Koivukunnas, Matti Lares, Mika Leino
  • Patent number: 6875311
    Abstract: A method and an arrangement for manufacturing calendered paper or board particularly in the on-line manufacturing method. In the method, a base web is formed from a mixture of water and pulp supplied from the headbox and the web is dried by removing water over the press section and over the dryer section by heating. The formed web is calendered at least once to modify the surface on at least one of its sides. Before calendering the cross-direction thickness profile of the web is standardized and calendering is carried out by means of a long-nip calender, whereby good surface quality is obtained without losing the bulk or stiffness of the web.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: April 5, 2005
    Assignee: Metso Paper, Inc.
    Inventors: Pekka Koivukunnas, Matti Lares, Mika Leino
  • Patent number: 6779440
    Abstract: In the method for calendering a paper or paperboard web, the properties of a paper or paperboard web (W) are modified by changing the vapour pressure inside a moist paper or paperboard web. The device for calendering a paper or paperboard web comprises means for changing the vapour pressure inside the moist paper or paperboard web (W).
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: August 24, 2004
    Assignee: Metso Paper, Inc.
    Inventors: Koivukunnas Pekka, Hannamari Härkönen, Risto Talja
  • Patent number: 6744025
    Abstract: The invention relates to an apparatus for hot-pressing a planar product in a process using microwave heating. The apparatus comprises a constant-volume, box-like microwave resonant cavity divided into two opposed subcavities by an elongated gap suitable for passing therethrough the product (1) to be heated. The product is guided through the gap by conveyor belts (2, 2′) of microwave-transparent material. The subcavities are delineated from the conveyor passageway gap by parallel walls of microwave-transparent material, each one of them sealed so as to form a wall of its own subcavity. At least one of the subcavities is pressurized, whereby the sealed wall of the pressurized subcavity is designed to yield under the pressure applied into the subcavity in a direction perpendicular to the product (1) to be pressed.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: June 1, 2004
    Assignee: Raute Oyj
    Inventor: Jaakko Vilo
  • Patent number: 6530316
    Abstract: In a first embodiment, this invention relates to a continuously operating press, preferably for the manufacture and/or printing, lamination or the like of a one or multiple layer board web of pre-manufactured material and/or raw material, wherein the lubricant used in the press is at least one phenyl-endblocked polydiorganosiloxane-polyphenylorganosiloxane random copolymer fluid. In a second embodiment, this invention relates to a continuously operating press, preferably for the manufacture and/or printing, lamination or the like of a one or multiple layer board web of pre-manufactured material and/or raw material, wherein the lubricant used in the press is a composition comprising (i) at least one phenyl-endblocked polydiorganosiloxane-polyphenylorganosiloxane random copolymer fluid and (ii) at least one stabilizing agent.
    Type: Grant
    Filed: January 16, 2001
    Date of Patent: March 11, 2003
    Assignee: Dow Corning Corporation
    Inventors: Ragnar Richard Avery, Gary Thomas Burns, John Joseph Kennan, Michael Robert Reiter
  • Publication number: 20020129718
    Abstract: In a first embodiment, this invention relates to a continuously operating press, preferably for the manufacture and/or printing, lamination or the like of a one or multiple layer board web of pre-manufactured material and/or raw material, wherein the lubricant used in the press is at least one phenyl-endblocked polydiorganosiloxane-polyphenylorganosiloxane random copolymer fluid. In a second embodiment, this invention relates to a continuously operating press, preferably for the manufacture and/or printing, lamination or the like of a one or multiple layer board web of pre-manufactured material and/or raw material, wherein the lubricant used in the press is a composition comprising (i) at least one phenyl-endblocked polydiorganosiloxane-polyphenylorganosiloxane random copolymer fluid and (ii) at least one stabilizing agent.
    Type: Application
    Filed: January 16, 2001
    Publication date: September 19, 2002
    Inventors: Ragnar Richard Avery, Gary Thomas Burns, John Joseph Kennan, Michael Robert Reiter
  • Publication number: 20020108510
    Abstract: An apparatus for manufacturing fuel cell plates including a continuous press, a vibrating hopper, a leveler and rollers for removing air from resin impregnated graphite. The sifted material is deposited on a heated lower press belt which is electrostatically charged, the belt having an embossing pattern. The material is leveled to a predetermined height and squeezed to remove air. An upper belt, also having an embossing pattern, contacts the material and heat and pressure are applied in a reaction zone for a predetermined time period. The finished product is a relatively low cost fuel cell plate.
    Type: Application
    Filed: February 12, 2001
    Publication date: August 15, 2002
    Inventor: W. Scott Thielman
  • Patent number: 6418840
    Abstract: A calendering method and calender in which a web material is passed through a calender, the calender being defined by two rolls having resilient roll coatings and being loaded towards each other so that due to the resilient nature of the roll coatings an extended nip is defined. Each of the calendering rolls being covered by a flexible calendering belt that is non-compressible in comparison to the roll coatings and each of the calendering belts being formed into a endless loop by passing over a respective alignment or reversing roll.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: July 16, 2002
    Assignee: Metso Paper, Inc.
    Inventor: Mika Viljanmaa
  • Patent number: 5862746
    Abstract: Apparatus for reducing the water content of water-containing, granular brown coal under the action of thermal energy and pressure on the material (14) distributed flat in bed form using a press (9, 10) in which the brown coal is subjected to a mechanically applied initial surface pressure and which is furnished with orifices (21) for feeding steam (HD) which, supplying thermal energy to the brown coal, heats this, with condensation, and the hot water (HW) contained in the heated brown coal is expressed for use as a waste-heat source, a vessel (30) being provided for collecting the hot water (HW), from which vessel the hot water (HW) is passed to the orifices (21) in the press (9, 10), and which vessel is furnished with an inlet for the steam (HD) for expelling the hot water (HW).
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: January 26, 1999
    Assignee: Maschinenfabrik J. Dieffenbacher GmbH & Co.
    Inventor: Friedrich Bielfeldt
  • Patent number: 5775214
    Abstract: A continuously operating press produces particle, fiber, plastic and wood boards continuously from pressing stock. The press includes a heating platen provided on one side of the press and a plurality of press platen segments arranged on a side opposite to the heating platen. The press platen segments are resiliently coupled to one another by snap-action hinges and the separation space between the press platen segments and the heating platen is independently adjusted. The pressing stock is pulled through the separation space which has been optimally controlled to produce boards with desired density profiles at a maximum production speed.
    Type: Grant
    Filed: May 28, 1996
    Date of Patent: July 7, 1998
    Assignee: Maschinenfabrik J. Dieffenbacher GmbH & Co.
    Inventors: Friedrich B. Bielfeldt, Detlef Kroll
  • Patent number: 5732622
    Abstract: A machine for manufacturing corrugated board including one or more flexible, disposable covers for the pressure-applying feet of the machine. The covers prevent wear and tear to the bottoms of the pressure-applying feet and may be easily replaced, as needed. In a belt-driven machine, the disposable covers may be located between the pressure-applying feet and the conveyor belt. In a machine with a beltless hotplate section, the conveyor belt is replaced by a pulling section located downstream from the hotplate section and the disposable covers may be located between the pressure-applying feet and the moving surface. The covers allow the thickness of the corrugated board to be varied while the board is moving through the machine without causing the leading edge of an added layer to catch on the upstream edges of the pressure-applying feet. In addition, the covers and/or the pressure applicators may be moved in the cross-machine direction to minimize waste when manufacturing different widths of corrugated board.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: March 31, 1998
    Assignee: Corrugated Gear and Services
    Inventor: David Lauderbaugh