Means Corrugating A Preform Patents (Class 425/369)
  • Publication number: 20150086752
    Abstract: A laminate of thermoplastic film materials exhibiting throughgoing porosity and comprising plies A and B, A having an inner surface A1 partly in contact with B and an outer surface A2, and B having an inner surface BI partly in contact with A and an outer surface B2, A and B consisting of continuous material except for a multitude of perforations in each ply, whereby essentially no perforation in A corresponds directly to a perforation in B, the lamination between A and B on surfaces A1 and B1 being a) through a coextruded lower melting lamination layer on A and/or B and b) established in such discontinuous manner that there is formed a channel system between A1 and B1 connecting the majority of the perforations in A each with at least one of the perforations in B, and connecting the majority of the perforations in B each with at least one of the perforations in A is provided in addition to a process and apparatus for producing such a laminate.
    Type: Application
    Filed: August 4, 2014
    Publication date: March 26, 2015
    Inventor: Ole-Bendt Rasmussen
  • Patent number: 8944800
    Abstract: A kitchen tool applies texture to gnocchi or gnocchetti. The kitchen tool has a bottom surface defining a plurality of parallel longitudinal ridges. Serrations on the longitudinal ridges help the longitudinal ridges to grip a ball of dough. A cross ridge is generally normal to the longitudinal ridges and depends below the longitudinal ridges. Sides depend below the cross ridge and the longitudinal ridges. The kitchen tool may be a part of a kit that also includes a dry dough mix. A method of using the tool also is provided.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: February 3, 2015
    Inventor: Richard R. Riggio
  • Publication number: 20140356473
    Abstract: The invention relates to positioning of shaping rolls and makes it possible the rapid formation of a large number of fine three-dimensional shapes on a sheet material. A pair of shaping rolls that are parallel to each other include, on circumferential surfaces thereof, recessed and protruding shapes that mesh with each other at a face-to-face position. Rotating shafts of the pair of shaping rolls are cooperatively coupled with a rotational driving means through eccentric couplings. A downstream shaping roll includes, inside a roll main body, air passages that extend in a direction of a roll shaft center and air vent holes that connect the air passages to the circumferential surface. A communication member is disposed adjacent to the end of the roll main body and includes an air intake port that can communicate with the air passages in a first preset region in a circumferential direction, and an air supply port that can communicate with the air passages in a second preset region.
    Type: Application
    Filed: November 7, 2012
    Publication date: December 4, 2014
    Applicant: ZUIKO CORPORATION
    Inventors: Toyoshi Umebayashi, Takahiro Shimada
  • Patent number: 8814556
    Abstract: A method for manufacturing a sheet having a shape transferred thereon, in which a sheet-like base made of a thermoplastic resin is placed between an imprint mold and an intermediate base and the sheet-like base is then pressed by a pair of pressing plates to imprint the shape of surface irregularity of the imprint mold to the sheet-like base. The sheet-like base is pressed such that, when pressing force of the pressing plates is maximum, an imprinting pressure difference is present in an imprinting surface of the imprint mold, a maximum imprinting pressure section is present in the imprinting surface, and a portion where the imprinting pressure is minimum is not present in the imprinting surface. The method achieves uniform and highly accurate shape transfer without trapping of air.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: August 26, 2014
    Assignee: Toray Industries, Inc
    Inventors: Yuma Hirai, Kiyoshi Minoura, Fumiyasu Nomura
  • Patent number: 8794948
    Abstract: An apparatus for the continuous production of a twin wall pipe has mold block halves supplied in pairs to form a mold, and a pipe head, which has an external nozzle for the extrusion of an external hose and an internal nozzle for the extrusion of an internal hose. A support air and venting channel which is annular-cylindrical and concentric with respect to the center longitudinal axis of the pipe head opens out between the external nozzle and internal nozzle.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: August 5, 2014
    Inventor: Ralph Peter Hegler
  • Publication number: 20140141113
    Abstract: An apparatus is provided for producing longitudinally corrugated product. The apparatus includes a guide roll for guiding a web of medium material, wherein at least a portion of the guide roll is adapted to be arranged at an angle relative to another portion of the guide roll. The apparatus further includes a plurality of flute forming bars oriented generally along a longitudinal axis of the web to define a first corrugating labyrinth effective to longitudinally corrugate the web to an intermediate geometry. The apparatus further includes a pair of corrugating rollers that cooperate to define, at a nip therebetween, a second corrugating labyrinth effective to longitudinally corrugate the web to a substantially final geometry. The apparatus further includes a web travel pathway for the web that follows a path around a portion of the guide roll, through the first corrugating labyrinth, and through the second corrugating labyrinth.
    Type: Application
    Filed: January 27, 2014
    Publication date: May 22, 2014
    Applicant: HBK FAMILY, LLC
    Inventor: Herbert B. Kohler
  • Patent number: 8727760
    Abstract: An apparatus for producing thermoplastic corrugated pipes may include an extrusion device with an extruder and an extrusion die device and a corrugator device with traveling mold jaws. The extrusion device and the corrugator device are positionally movable in relation to one another, for example for adjustment. The extrusion device is positionally movable in relation to the corrugator device in a horizontal plane, while the corrugator device is movable exclusively in height here.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: May 20, 2014
    Assignee: Unicor GmbH
    Inventor: Gerhard Neubauer
  • Patent number: 8708687
    Abstract: Apparatus for making micro-textured webs. The apparatus comprises a pair of mated forming structures having a first forming structure, a second forming structure, and a deformation zone; wherein at least the first forming structure comprises voids, and wherein at least the second forming structure comprises protrusions wherein at least one protrusion has center-to-center spacings of less than about 800 microns with at least three of its adjacent protrusions. The voids of the first forming structure are engagable with the protrusions of the second forming structure at an engagement position to form a micro-textured web. In another embodiment, the apparatus comprises a pair of counter-rotating rollers wherein the first roller comprises grooves having a length, wherein the length of the grooves are oriented at an angle different from the machine direction.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: April 29, 2014
    Assignee: The Procter & Gamble Company
    Inventors: Richard George Coe, Keith Joseph Stone, Mathias Johannes Hilpert, James William Busch, Kasey Marie Gust, Rakesh Gummalla
  • Patent number: 8579624
    Abstract: A system is disclosed for manufacturing multi-wall corrugated polymer pipe. The system includes an extruder configured to co-extrude concentric annular tubes; a corrugator configured to form the concentric annular tubes into a dual-wall pipe having a smooth wall and a corrugated wall; a cross-head die configured to extrude an outer wall of pipe onto the corrugated wall of the dual-wall pipe; a vacuum punch configured to penetrate the outer wall of pipe and draw a vacuum between the corrugated wall and the outer wall, such that the outer wall of pipe deforms inward toward the corrugated wall of pipe between bell and spigot portions of the corrugated wall; and a cutter configured to cut the pipe into sections where the vacuum punch deformed the outer wall between the bell and spigot portions of the corrugated wall. A method of manufacturing multi-wall corrugated polymer pipe is also disclosed.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: November 12, 2013
    Assignee: Advanced Drainage Systems, Inc.
    Inventors: Gerald S. Sutton, David J. Kelley, Randall A. Kolbet
  • Patent number: 8512025
    Abstract: A corrugating roller pair support frame includes four supporting posts, in between two of which one rectangular supporting plate of a corrugating roller pair is mounted while another rectangular supporting plate is mounted in between the other two supporting posts, and the four supporting posts having a plurality of locating blocks movably embedded therein for releasably engaging with locating slots formed on the rectangular supporting plates to thereby releasably hold the corrugating roller pair to the support frame; and a supporting elevator for supporting and regulating the corrugating roller pair to a desired height on the support frame. With these arrangements, the corrugating roller pair can be conveniently mounted to or released from the support frame and be easily exchanged with another one, so that the time needed for handling the corrugating roller pair is shortened and the efficiency of manufacturing corrugated boards is upgraded.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: August 20, 2013
    Inventor: Tien-Yang Chen
  • Patent number: 8500432
    Abstract: A corrugator device for shaping thermoplastic corrugated pipes from a tube of molten plastics material emerging from an extrusion device may include molding jaws, grippers for returning the molding jaws from the end of a molding section to the start of the molding section, and a mold release device. The mold release device is arranged at the end of the molding section, and has a motor-driven rotary disk for interacting with the pair of molding jaws. The pair of molding jaws, which has reached the end of the molding sections, is moved apart by means of first and second drivers formed on the motor driven rotary disk.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: August 6, 2013
    Assignee: Unicor GmbH
    Inventor: Stefan Fösel
  • Patent number: 8430659
    Abstract: A corrugator device for shaping thermoplastic corrugated pipes out of a molten plastic tube issuing from an extrusion device may include moving molding jaws which circulate in a linear molding section and are arranged in paired successive relationship in the molding section forming a molding passage. The pairs of molding jaws may be formed from left-hand and right-hand molding jaws and between them enclose a cylindrical mold cavity to form the molding passage. The device may include a gripper device for guiding the molding jaws from the end of the molding section back to the start of the molding section, and having grippers respectively for the left-hand and the right-hand molding jaws, each with a separate guide and drive device.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: April 30, 2013
    Assignee: Unicor GmbH
    Inventor: Stefan Fösel
  • Patent number: 8430663
    Abstract: The device for satinizing and embossing metallized or surface-treated packaging foils comprises three embossing rolls, all three embossing rolls cooperating with one another and the packaging foil being capable of being passed under pressure between the first and the second and between the first and the third embossing rolls in order to produce a satin-finish and a pattern. The first, driven embossing roll has a tooth array composed of individual teeth that are arranged in a homogenous grid, and the other two embossing rolls each have a surface structure that differs from that of the first embossing roll. At least one of the additional embossing rolls has structural elements that are arranged individually or in groups but not in the same grid as on the first roll, the structural element being composed of individual teeth and being arranged circularly on the embossing roll. Such an arrangement provides an effective breaking of the paper substrate of the foil and thus a surface having improved properties.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: April 30, 2013
    Assignee: Boegli-Gravures S.A.
    Inventor: Charles Boegli
  • Publication number: 20130101739
    Abstract: A piece of substrate material is formed under heat and pressure by a roller against a cavity or platen into a shaped substrate sheet having one or more depressions. Two substrate sheets are bonded together to form a substrate wherein the one or more depressions form one or more interior channels. The substrate is coated with a dope in a casting device having a guide portion corresponding to the shape of the substrate sheets and quenched to form a filtering membrane.
    Type: Application
    Filed: October 18, 2012
    Publication date: April 25, 2013
    Applicant: FIBRACAST LTD.
    Inventor: Fibracast Ltd.
  • Patent number: 8215943
    Abstract: A heat-transfer label assembly and an apparatus for applying heat-transfer labels. In a preferred embodiment, the heat-transfer label assembly includes a support. A plurality of labels are positioned over the support for transfer from the support to an article, each of the labels including an ink design. A plurality of spacers are positioned over the support but not over the label, the spacers not being transferable with the labels from the support to an article. The distance from the top of the spacers to the support exceeds the distance from the top of the labels to the support so that, when the assembly is wound into a roll, the labels do not come into contact with the bottom surface of an underlying portion of the support. In a preferred embodiment, the apparatus for applying heat-transfer labels includes a pad, a die-mark reduction device on the pad, a heated die positioned over the pad, and a motor for moving the heated die into and out of engagement with the die-mark reduction device.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: July 10, 2012
    Assignee: Avery Dennison Corporation
    Inventors: Kuolih Tsai, Dong-Tsai Hseih, Yi-Hung Chiao, Alan Morgenthau, Roger Recupero, Julio Adalberto De La Cruz Escobar
  • Patent number: 8167603
    Abstract: The invention under consideration concerns a device for the production of corrugated pipes made of thermoplastic, in which mold jaws, which complement each other in pairs, are conducted jointly in a cycle along a mold section that leads away from an extruder head; they are moved apart at the end of the mold section and are returned to its beginning separately from one another with a mold section device for the movement of the mold jaws along the mold section, which has a supporting table with drive means for the mold jaws on the mold section, and with a return conveying device for the return conveyance of the mold jaws from the end of the mold section to its beginning, which has an outlet assembly to move apart the mold jaws at the end of the mold section and/or an inlet assembly to move in the mold jaws at the beginning of the mold section.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: May 1, 2012
    Assignee: Drossbach GmbH & Co. KG
    Inventors: Claus Hetzner, Michael Hurler
  • Patent number: 8118584
    Abstract: A carrier tape forming apparatus includes a tape paying-out unit for paying out a tape to be worked, a tape feeding unit for feeding the tape, a forming unit for effecting embossing on the tape, a perforating unit for perforating at least a feeding hole in the tape, and a tape taking-up unit for taking up the finished (embossed) tape thereabout. The apparatus includes also double-acting driving units provided as driving sources at least for the tape feeding unit, the forming unit and the tape taking-up unit, each driving unit being fluid-operated and movable along a straight path and a controller for independently controlling driving/stopping of the double-acting driving units for the forming unit and the tape taking-up unit in association with driving/stopping of said double-acting driving unit for the feeding unit.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: February 21, 2012
    Assignee: Sumitomo Bakelite Company Limited
    Inventors: Noriaki Yukawa, Hiroshi Otsuka
  • Patent number: 8075295
    Abstract: A molding apparatus for the manufacture of pipe advantageously uses a cooling plug that is adjustably-secured to the extrusion head to compensate for misalignment of the extrusion head relative to recirculating mold blocks. This provides a simplified adjustment for adjusting the molding apparatus to correct for wall thickness variations in the molded pipe. This apparatus can be used in combination with existing alignment systems.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: December 13, 2011
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke
  • Patent number: 8075832
    Abstract: A solution casting apparatus includes a drive roller as a conveying means. The drive roller conveys a polymer film peeled from a belt, the polymer film still containing a solvent. The drive roller has corrugation valleys and corrugation peaks formed on a peripheral surface along a circumferential direction of the drive roller. Each of the corrugation valleys and the corrugation peaks has a substantially semicircular cross section. The corrugation valleys and the corrugation peaks are disposed alternately in an axial direction of the drive roller. A pitch Pv between the corrugation valleys and a pitch Pm between the corrugation peaks are in the range of 0.01 to 2 mm, and a height Hv-m from a lowest point of the corrugation valley to a highest point of the corrugation peak is in the range of 0.01 to 1 mm. A curvature radius Rv of the corrugation valley and a curvature radius Rm of the corrugation peak are in the range of 0.1 to 0.5 mm.
    Type: Grant
    Filed: January 2, 2009
    Date of Patent: December 13, 2011
    Assignee: FUJIFILM Corporation
    Inventors: Ryuhei Yoshida, Shinji Hikita, Hiroki Sato
  • Patent number: 7837459
    Abstract: The process of producing a dual damascene structure used for the interconnect architecture of semiconductor chips. More specifically the use of imprint lithography to fabricate dual damascene structures in a dielectric and the fabrication of dual damascene structured molds.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: November 23, 2010
    Assignee: International Business Machines Corporation
    Inventors: Matthew E. Colburn, Kenneth Raymond Carter, Gary M. McClelland, Dirk Pfeiffer
  • Patent number: 7740786
    Abstract: Necked nonwoven webs having improved cross-directional uniformity are made by a process which includes the step (prior to neck stretching) of corrugating the nonwoven web to reduce its width from an initial width A to a reduced corrugated width B. The cross-directional uniformity is optimized as the corrugated width B approaches the ultimate width C of the necked nonwoven web.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: June 22, 2010
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Robert J. Gerndt, David W. Hall
  • Patent number: 7524177
    Abstract: A pipe mold (1) produces plastic pipe with an internal wall having a first wall portion (23, 25) and a second wall portion (27). The pipe mold (1) includes a two stage cooling plug (35) to assist in setting the pipe wall. The first cooling stage (37) is controlled to remove heat from the pipe wall to partially set the plastic without excessive cooling. The partially set plastic pipe then passes over a second stage (39) where less precision in the cooling of the pipe occurs. The partially set plastic is more tolerant and subject to less damage. Preferably both the first and second stages (37, 39) include separate temperature sensors (120, 122) and control arrangements (124, 126) for varying the cooling medium of each stage. In a preferred embodiment a cooling medium is circulated through a first stage at a temperature and at a flow rate to maintain the first stage (37) within a narrow temperature range about the temperature of the cooling medium.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: April 28, 2009
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke
  • Patent number: 7517209
    Abstract: A pipe molding apparatus includes a plurality of mold blocks (9) which move along a molding path to form double wall plastic pipe having an outer pipe wall with corrugations which set outside diameter of the pipe and an inner wall around a bore through the pipe. The mold blocks (9) have profiled faces which determine shape of the pipe. The profiled faces are reconfigureable in profile between first depth of the corrugations and diameter of the bore through the pipe without varying external diameter and while maintaining essentially constant wall thickness of the pipe.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: April 14, 2009
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke
  • Patent number: 7517210
    Abstract: An apparatus for the manufacture of compound pipes with an oval cross-section is equipped with mold halves which advance in a direction of production and of which two at a time combine as a pair on a molding path to form one mold. An injection head of at least one extruder is arranged upstream of the molding path. An external nozzle used for the creation of an external tube is substantially circular in shape and is located at a distance upstream of the molding path. An internal nozzle with a cross-section similar to the oval cross-section of the pipe to be created is located inside the molding path. When entering the molding path, the external tube extruded through the external nozzle is expanded in one direction and pressed together in a direction which is perpendicular to the former.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: April 14, 2009
    Inventor: Ralph Peter Hegler
  • Publication number: 20080296810
    Abstract: A method and an apparatus for corrugating and winding up rolls of a plastic film. The plastic film is corrugated as it is continuously wound onto a roll, by a film drawing drum conformed with a plurality of longitudinally extending grooves to perform open-end corrugation or folds which extend crosswise the film; the plastic film is corrugated crosswise, causing the same film to penetrate into the grooves of the drawing drum by suction of air through a plurality of suction holes which open out into the grooves of the drum.
    Type: Application
    Filed: June 3, 2008
    Publication date: December 4, 2008
    Applicant: NO.EL. S.R.L.
    Inventor: Roberto PELLENGO GATTI
  • Patent number: 7458802
    Abstract: The invention can be defined in its most general form as a device for sheet material corrugation by means of bending and can be applied in the devices for production of single curvature folded core used in production of aircraft and craft curvilinear panels. The invention has for its object to broaden the technological capabilities. For that the mandrel is made in the form of a set of alternating rows of plane elements (4, 6, 7) made in the form of trapeziums (4) and isosceles triangles (6, 7) fixed on the flexible material of the base (5) forming thus the gap-pivots between the elements. At the same time the bases of the triangular elements (6, 7) face each other in pairs along the bending lines while said bending lines correspond to the protrusions lines of the core folded structure. The base of the triangular elements (6, 7) is the function of the folded core block curvature radius and the geometrical parameters of the zigzag crimp structure.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: December 2, 2008
    Assignees: Airbus, Otkrytoe Aktsionernoe Obschestvo “Kazansky Nauchno-Isledovatelsky Institut Aviatsionnoi Tekhnologii”
    Inventors: Niaz Irekovich Akishev, Ildus Muhametgaleevich Zakirov, Alexandr Vladimirovich Nikitin
  • Patent number: 7311509
    Abstract: A molding apparatus includes a moving mold for shaping molten plastic into product made within the moving mold. The moving mold is surrounded by an air block housing to define a cooling chamber exteriorly around the moving mold. At least one heat exchanger is located within the cooling chamber. The heat exchanger provides cooling air which is contained by the housing within the cooling chamber to act on and provide cooling of the moving mold.
    Type: Grant
    Filed: August 16, 2004
    Date of Patent: December 25, 2007
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke
  • Patent number: 7306448
    Abstract: A half-mold for a corrugator for making pipes with transverse ribs. The half-mold comprises two sides located spaced apart from each other and a semi-cylindrical base surface linking the two sides. Directly mounted forming elements bent in the shape of a semicircle which define the outer surface of the pipe with transverse ribs are removably fixed on the base surface. The directly mounted forming elements bent in the shape of a semicircle are removably fixed with fixing elements on the half-mold.
    Type: Grant
    Filed: August 10, 2002
    Date of Patent: December 11, 2007
    Assignee: Unicor GmbH Rahn Plastmaschinen
    Inventors: Gerhard Neubauer, Klaus Kaufmann
  • Patent number: 7267535
    Abstract: An extruding apparatus which extrudes continuous length of hollow plastic product has an extruder (3) which feeds molten plastic through die equipment (5) to a mold tunnel (7) formed by side by side moving mold blocks (9). The apparatus includes air turbulence internally of the product within the mold tunnel to assist in setting shape of the product. The air turbulence is provided by an air moving member (17) located internally of the product within the mold tunnel and a power source for the air moving member. The power source is located externally of the mold tunnel and a power transfer is provided to feed power from the power source through the die equipment to the air moving member without cooling of the die equipment.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: September 11, 2007
    Inventors: Manfred A. Lupke, Stefan A. Lupke
  • Patent number: 7232302
    Abstract: Process and apparatus for continuously and permanently shaping a plate in plastic material according to an undulated profile. The apparatus includes a guide and positioning surface of the plate; a moulding and transferral wheel, peripherally shaped according to a plurality of seats, suitable for reproducing a continuous shaped profile; and a positioning, advancement and maintenance assembly in the form of a plate, peripheral with respect to the moulding wheel, of the mobile type, respectively; counter-clockwise in synchronization with the moulding and return wheel in a position independent of the moulding wheel. The assembly includes a pre-form presser, upstream of the surface involved in the shaping, set apart by at least one first stabilization and cooling presser, a moulding presser, interposed between the pre-form presser and a cooling presser; and a possible blade for detaching the plate from the seats.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: June 19, 2007
    Assignee: Habasit Italiana S.p.A.
    Inventors: Alberto Marzona, Sommariva Giacomo
  • Patent number: 7207791
    Abstract: Described is an apparatus for the production of transversely ribbed tubes comprising mold jaw halves which are movable in a condition of bearing against each other along two guide. The guide paths have a common mold section, a respective return section and two respective direction-changing sections. The respective direction-changing section has a direction-changing member which is linearly movably guidedly arranged on a base element fixed with respect to the machine and which is connected to a compensating device which is provided to compensate for the tolerance play of the mold jaw halves which circulate along the associated guide path, said tolerance play being dependent on the temperature and/or the speed of the mold jaw halves.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: April 24, 2007
    Assignee: Unicor GmbH Rahn Plastmaschinen
    Inventor: Gunther Hofmann
  • Patent number: 7172402
    Abstract: Described is a mold jaw half for an apparatus for the production of transversely ribbed tubes, wherein the mold jaw half (16) has end faces and a base face and in its interior a cooling passage with a coolant feed and a coolant discharge, which open at a spacing from each other at the base face of the mold jaw halves. In order to provide a reduced flow resistance for the coolant through the cooling passage and consequently an increased coolant through-put, resulting in an improved cooling action, it is proposed that the coolant feed and the coolant discharge cross, as seen in a direction viewing on to the end faces of the mold jaw halves, and are oriented in opposite relationship with respect to the advance direction of the mold jaw half. That mutually opposite orientation provides that the coolant is virtually shovelled into the cooling passage.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: February 6, 2007
    Assignee: Unicor GmbH Rahn Plastmaschinen
    Inventor: Gunther Hofmann
  • Patent number: 7153117
    Abstract: Described is an apparatus for the production of transversely ribbed tubes, comprising mold jaw halves which are circulatingly moved in a condition of bearing against each other along two endless guide paths by means of a respective associated drive device, wherein the two guide paths have a common mold sections, a respective return section and two respective direction-changing sections. The respective direction-changing section has a direction-changing member provided with an arcuate guide edge. The guide paths along the common mold section and along the return sections have elongate wearing elements comprising a low-wear plastic material, which are exchangeably provided on a base arrangement of the apparatus.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: December 26, 2006
    Assignee: Unicor GmbH Rahn Plastmaschinen
    Inventor: Gunther Hofmann
  • Patent number: 7147453
    Abstract: The invention relates to a device for embossing and/or glazing films. The device for embossing includes a first and second embossing roll, through which flat material can be fed under pressure, in order to create a pattern. An additional embossing roll is connected downstream of the second embossing roll, this additional embossing roll interacting with the first or preceding embossing roll. The patterned flat material may be fed between these embossing rolls, in order to be embossed again with essentially the same pattern. In a simplified embodiment, only a total of two rolls are used. In order to achieve as precise an embossing as possible, with special effects, the first driven embossing roll is provided with teeth, while at least one other embossing roll comprises rings or longitudinal ribs, or is smooth.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: December 12, 2006
    Assignee: Boegli-Gravures SA
    Inventor: Charles Boegli
  • Patent number: 7118369
    Abstract: The present invention relates to an apparatus for the manufacture of corrugated pipes from thermoplastic in which mould segment halves, which complement one another in pairs, are guided together in a circuit along a mould path adjacent to an injection head, are moved apart at the end of the mould path and are returned back to its start separately from one another. The apparatus has a mould path device to move the mould segment halves along the mould path and a return conveyor to return the mould segment halves from the end of the mould path back to its start, with the mould path device comprising a machine table having a lower guide and lower drive means for the mould segment halves and a cover frame secured to the machine table having an upper guide and upper drive means for the mould segment halves.
    Type: Grant
    Filed: March 20, 2002
    Date of Patent: October 10, 2006
    Assignee: Drossbach GmbH & Co. KG
    Inventors: Karl Dietrich, Michael Hurler
  • Patent number: 7048828
    Abstract: A tissue paper crimper of greater rigidity is provided by mounting crimper disks to linear bearings which in turn are mounted to a carriage which can be positioned in the cross machine direction on a frame. The crimper disks are pressed against anvil roll pneumatic actuators. The use of linear bearings allows the crimper to run at higher operating speeds. An air knife is positioned so that a jet of air following a Coanda surface periodically blows against the rotating crimping wheel and thereby removes fibers before they build up. Buildup of fibers on the crimping wheels from the tissue webs being crimped can cause the wheels to become unbalanced, resulting in undesirable vibration. The rigid mounting and the prevention of fiber buildup will allow the crimper of this invention to operate at higher machine speeds.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: May 23, 2006
    Assignee: Metso Paper, Inc.
    Inventors: Keith G. Wiedow, Lawrence J. Fuchs
  • Patent number: 7001171
    Abstract: A corrugator and mold management apparatus and methods for continuously forming transverse corrugations and other shapes in a tubular polymer melt parison formed by an extrusion die employs a plurality of molds that interlock when mated. Each mold has common outside dimensions and a pair of open linear bearings that provide the mold axis and maintain alignment of the molds parallel to and in the same horizontal plane as the axis of the extrusion die. The molds are moved axially along supported rails by bi-directional linear actuating modules and between the pairs of supported rails by lateral transport units. Inner supported rails define the mold tunnel and outer supported rails provide an outer path to move molds upstream back toward the extrusion die. The lateral transport units include extensible rails that facilitate the transfer of molds to and from the mold tunnel and the outer return paths. Delivery units remove from and introduce molds from a plurality of parking stations.
    Type: Grant
    Filed: February 19, 2001
    Date of Patent: February 21, 2006
    Inventor: Joseph M. Starita
  • Patent number: 6946012
    Abstract: A filter includes first and second sheets of filter media, the second sheet being pleated and forming with the first sheet a plurality of axially extending flow channels having lateral cross-sectional shapes with two adjacent included angles each greater than 45° and less than 75°. Forming apparatus and methods are provided.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: September 20, 2005
    Assignee: FleetGuard, Inc.
    Inventors: Robert K. Miller, Z. Gerald Liu, William C. Haberkamp, Barry M. Verdegan, Murray R. Schukar, A. Caner Demirdogen
  • Patent number: 6910875
    Abstract: The present invention provides a device for producing an unvulcanized rubber member for tire manufacturing. The device includes an extruder with a die that extrudes the unvulcanized rubber member to form multiple rib-protrusions that extend in a direction corresponding to a circumferential direction of the tire. A conveying apparatus receives the unvulcanized rubber member and conveys it in the extrusion direction. A roller has an outer surface with protruding portions that form multiple grooves in the unvulcanized rubber member that extend in a direction radial direction of the tire and intersect the rib-protrusions.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: June 28, 2005
    Assignee: Bridgestone Corporation
    Inventor: Nobuyoshi Shimazaki
  • Patent number: 6905325
    Abstract: Pipe molding apparatus having a molding mold tunnel includes an upstream (3) and at least one downstream mold block (7). Each mold block (3, 5, 7) comprises mold block sections which close with one another to form the pipe and which open relative to one another to release the pipe. The mold blocks (3, 5, 7) move downstream of the apparatus together with one another when forming the pipe and move upstream separately from one another when releasing the pipe which cools and shrinks in both diameter and length in the mold tunnel. Each mold block (3, 5, 7) has a hollow pipe forming region with the pipe forming region of the downstream mold block being decreased in both diameter and length relative to the pipe forming region of the upstream mold block (3) to compensate for the plastic shrinkage.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: June 14, 2005
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke
  • Patent number: 6877976
    Abstract: A ribbed pipe molding apparatus has a die with a plastic flow passage which carries molten plastic from an extruder to a mold for making the ribbed pipe. The plastic flow passage has a downstream flow region which exits at an acute angle through the external surface of the die. The inner wall of the end region which locates downstream of the outer wall of the flow passage in the downstream flow region of the passage has a transition wall part which is also inclined relative to the exterior surface of the die but which is sloped at a angle less than the main part of the downstream flow region of the passage. The transition wall part of the inner wall shapes the mouth of the passage so as to produce a wedging of the plastic flowing through the passage into the mold for extremely efficient production of the ribs on the pipe.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: April 12, 2005
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke
  • Publication number: 20040247729
    Abstract: The corrugating roller (7; 9) for machines to produce corrugated cardboard, comprises: a hollow cylindrical body (7B; 9B), with an outer (7D; 9D) surface provided with corrugations (7C; 9C); a circuit for a heat-carrying fluid; and a pair of necks (7E, 7F; 9E, 9F), through at least a first (7E; 9E) of which said heat-carrying fluid is supplied. The body (7B) and the necks (7E, 7F) are produced in a single block machined by removal.
    Type: Application
    Filed: June 3, 2004
    Publication date: December 9, 2004
    Inventors: Mauro Adami, Desiderio Garcia
  • Patent number: 6773253
    Abstract: An apparatus for the manufacture of profiled plastic pipes comprises a machine bed (1) that half shells (2, 2′) are guided on, forming a molding path (9). A driving pinion (17) is provided above the molding path (9). At least one lower driving pinion (41) is provided on the machine bed (1) along the molding path (9). A lower indentation (39, 39′) is formed in the area of the lower side (30, 30′) of the half shells (2, 2′), with the at least one lower driving pinion (41, 41′) engaging therewith.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: August 10, 2004
    Inventor: Ralph Peter Hegler
  • Publication number: 20040126531
    Abstract: A method for treating a film by providing a structure including a substrate and an array of upstanding projections each of which includes multiple contact points. The structure is pressed against the surface of a polymeric film to cause deformation or rupture of the film. The film may then be pressed to partially reseal the perforations. The structure can be produced by electroplating a mould which includes an array of elements of dimensions corresponding to the projections of the desired structure.
    Type: Application
    Filed: October 27, 2003
    Publication date: July 1, 2004
    Inventors: Erol Craig Harvey, Ramon Glenny Waycott, David Lee Carew
  • Patent number: 6719942
    Abstract: A method and apparatus for producing an extruded product includes a machine that cooperates with an extruder. The machine is commonly used as a corrugator and the extruded product is often corrugated piping. The machine has a frame supporting a trackway in a continuous path. A plurality of mold block assemblies travel about the continuous path to form a mold tunnel along a portion of the continuous path. The mold block assemblies include a carriage connected by at least one guide and linear bearings to a pair of mold holders. The mold holders are connected to at least one pair of opposing mold blocks. Guides and directors position the mold block pairs relative to one another while the assemblies travel along the continuous path. As the holders, and thus the mold block halves, are linearly displaceable from one another, the halves may meet to form the mold tunnel and separate to allow removal of the extruded product.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: April 13, 2004
    Inventors: David A. Triplett, Gary Winner, Tom McKeehan, Claude R. Ellis
  • Publication number: 20040052885
    Abstract: The present invention relates to a mold roll enabling good-quality non-skid conical protrusions to be formed on the bottom surface of the base sheet which is a raw material for a vehicle mat, which further comprises air recesses formed to be extended from the bottoms of the grooves formed in the radius direction on the outer circumference of the mold roll, and for accommodating air remaining in the grooves when the base sheet is pressed into the grooves of the mold roll, in an apparatus fabricating a vehicle mat sheet that has a guide roll for guiding a base sheet extruded in a sheet shape with a gel-state thermoplastic resin through an extruder and carpet supplied from a side, a mold roll for molding conical protrusions on the bottom surface of the base sheet, a carpet-adhering roll forming a pair with the mold roll to press and adhere the carpet on the top surface of the base sheet.
    Type: Application
    Filed: March 3, 2003
    Publication date: March 18, 2004
    Inventor: Ki-Bong Lee
  • Publication number: 20040000742
    Abstract: An apparatus for reducing wrinkles in a film includes a first pair of cylindrical rollers including a first roller and a second roller, the first and second roller each in parallel juxtaposed relation to each other, and each having a substantially smooth surface; and a second pair of cylindrical rollers including a third roller and a fourth roller, the third and fourth roller each in parallel juxtaposed relation to each other, and at least one of the third and fourth roller having a chevron pattern disposed on the surface thereof; the first pair of rollers being adjacent to and spaced apart from the second pair of rollers. A method for reducing wrinkles is also disclosed herein.
    Type: Application
    Filed: June 27, 2002
    Publication date: January 1, 2004
    Applicant: Cryovac, Inc.
    Inventors: Steve Swafford, Steve J. Schwarz, Dan McKamy, James Mabry, Jeff Walker
  • Patent number: 6652258
    Abstract: Mold blocks and methods for thermoforming corrugated plastic pipe that provide a uniform vacuum on the internal lateral surface and optimize forced convective cooling on exterior surface is disclosed. Mating mold blocks have an interior surface with transverse corrugations and an exterior lateral surface having transverse channels containing radial slots that intersect circular slits formed in the interior mold surface. The channels are fitted with a dual cover arrangement that serves to provide (1) a low-resistance vacuum path to the slits located on the interior surface and (2) a forced convective heat transfer path to cool the mold blocks. The cover arrangement is removable, providing a convenient means of inspecting, maintaining and modifying the mold blocks.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: November 25, 2003
    Inventor: Joseph M. Starita
  • Patent number: 6644951
    Abstract: A molding apparatus which is used in a continuous molding operation includes an endless looped track, track carriers which are moved around the track to and from a product shaping mold region and a transfer system for replacement of mold block members used in the apparatus. The transfer system, which operates without interrupting the molding operation includes transfer carriers controlled to move synchronized with the track carriers at a transfer location remote from the mold region and actuators which slide the mold block members between the track carriers and the transfer carriers at the transfer location when the transfer carriers are synchronized with the track carriers.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: November 11, 2003
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke
  • Patent number: 6478066
    Abstract: A corrugator unit, particularly for sheets or webs of paper, or similar, of the type comprising at least two rolls (1, 2), having a toothed or corrugated surface (101, 202), and being mutually engaged and pushed against each other by a predetermined pressure or force. The invention provides that the mutual compression between rolls (1, 2) is exerted (4, 5, 106, 21, 22, 25, 26) over the whole axial length of the rolls (1, 2). This may be obtained through mechanical (6) or magnetic (21, 22, 23, 25, 26) means.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: November 12, 2002
    Assignee: Agnati S.p.A.
    Inventors: Renato Rossi, Flavio Pompeo Lucca