Concentric Patents (Class 425/133.1)
  • Patent number: 10399294
    Abstract: A method for wrapping a stream of material or stream of layers of materials includes feeding a stream of material or stream of layers of materials into a die containing a wrapping deflector which acts to wrap the stream into a tubular or profile shape.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: September 3, 2019
    Assignee: GUILL TOOL & ENGINEERING CO., INC
    Inventors: Richard Guillemette, Robert Peters
  • Patent number: 10328628
    Abstract: A process for manufacturing a diesel tank or filler pipe by an extrusion-blow molding machine configured to manufacture a gasoline tank or filler pipe. The extrusion-blow molding machine includes a coextrusion head including at least one extruder configured to provide during a first period of time a first material that is a barrier to liquids and/or gases, such that during the first period of time the coextrusion head produces a first multilayer parison from which the gasoline tank or filler pipe can be manufactured. The extruder is further configured to provide during a second period of time a second material distinct from the first material, such that during the second period of time the coextrusion head produces a second multilayer parison from which the diesel tank or filler pipe can be manufactured.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: June 25, 2019
    Assignee: Plastic Omnium Advanced Innovation and Research
    Inventors: Seiji Kosako, Eric Boucaux, Koichiro Shimotake, Yong Chen
  • Patent number: 10189201
    Abstract: A method for manufacturing a hollow body, typically a tank, from a plastic material. The method includes molding a preform into shells in a molding tool; joining an insert to an inner surface of a shell of said shells, the insert defining a sub volume within the hollow body to be made; joining together the shells to form the hollow body by closing the molding tool and applying a main pressure to a main volume enclosed by the shells. It is proposed to apply a sub pressure to the sub volume while applying the main pressure to the main volume, such that a pressure difference between the main volume and the sub volume is bigger than 0.20 bar (P1??P2?>0.20 bar) and smaller than 3.00 bar (P1??P2?<3.00 bar).
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: January 29, 2019
    Assignee: Plastic Omnium Advanced Innovation and Research
    Inventors: Yvonnig Guezennec, Stephane Toutain, Jean-Francois Coing, Serge Dupont
  • Patent number: 10182576
    Abstract: To provide a shutter piece in a food shaping device that is capable of opening and closing an enclosure surrounded by a plurality of shutter pieces, the shutter piece including a flexure allowance part between a rotation center position of a shutter piece and a distal end part of the shutter piece to allow flexure of a distal-end side portion of the shutter piece in the opposite direction from a closing opening direction during a closing operation of the shutter piece, in which the flexure allowance part is constituted by a slit, a cutaway part, or a hole, and the flexure allowance part includes a flexure-amount adjustment mechanism to adjust the amount of flexure of the distal-end side portion of the shutter piece.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: January 22, 2019
    Assignee: RHEON AUTOMATIC MACHINERY CO., LTD.
    Inventors: Shigeru Hashimoto, Takeshi Oderaotoshi
  • Patent number: 9895021
    Abstract: A cooking assembly, and a cooking station employing the cooking assembly, is disclosed. The cooking assembly comprises a flexible ring which is conformable to any one of a plurality of different predeterminedly structured templates, any one of which can be interchangeably utilized upon a food station, in order to provide cooked foods with predeterminedly different shapes or configurations as may be desired.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: February 20, 2018
    Assignee: A. J. ANTUNES & CO.
    Inventors: Ignacio Vega, Bhupendra R. Patel, Scott Paul March
  • Patent number: 9873220
    Abstract: A melt processing plant including a melt charger for charging a processing head, in particular a pelletizing head, with melt, is provided. Upstream of the processing head a diverter valve for discharging the melt during a starting and/or retooling phase is associated with the melt charger, and a portioning device for portioning the discharged melt into melt portions is associated to the diverter valve. A cooling device for cooling the melt portions to at least partly solidified chunks of material is also provided, the cooling device including a cooling bath having an associated belt conveyor with a first collecting belt portion inclined at an acute angle to the horizontal and extending through the level of the cooling bath for collecting chunks of solidified material.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: January 23, 2018
    Assignee: GALA INDUSTRIES, INC.
    Inventors: Michael Eloo, Juergen Veltel
  • Patent number: 9433221
    Abstract: A method for producing a foodstuff, in particular sausages, produced by coextrusion, including extruding a paste mass, coextruding a casing, and where a bonding agent is fed between paste mass and coextruded casing.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: September 6, 2016
    Assignee: ALBERT HANDTMANN MASCHINENFABRIK GMBH & CO. KG
    Inventors: Manfred Bächtle, Armin Buechele, Siegfried Reutter, Markus Schliesser
  • Patent number: 9433222
    Abstract: A device and a method for distributing residual air in a pasty mass, in particular for the production of sausages, with a housing comprising a flow channel and an inlet and outlet for the pasty mass, and with a distributor means for deflecting and mixing the pasty mass thoroughly in the flow channel, where the distributor means can be adjusted such that the mixing of the pasty mass can be adjusted.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: September 6, 2016
    Assignee: ALBERT HANDTMANN MASCHINENFABRIK GMBH & CO. KG
    Inventors: Martin Ried, Uwe Weckenmann
  • Patent number: 9399113
    Abstract: A method is provided for making a tubing, which includes forming a generally tubular inner layer by flowing a first material through an extrusion assembly. At least one non-tubular segment is formed along the length of the tubing by flowing a second material through the extrusion assembly. A generally tubular outer layer coaxial with the inner layer is formed by flowing a third material through the extrusion assembly. The segment is positioned between the inner and outer layers and oriented non-tangentially with an interface between the inner and outer layers. The resulting tubing, which may be suitable for medical applications, may have kink-resistant properties.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: July 26, 2016
    Assignee: Fenwal, Inc.
    Inventors: Craig Sandford, Dean R. Marshall, Daniel R. Boggs, Alvin Peralta-Faulkner, Daryl Calhoun
  • Patent number: 9138930
    Abstract: An extrusion blow-molding method for plastic containers, for example, plastic bottles, is disclosed, wherein a one- or multi-layer plastic tube is extruded with a predetermined extrusion pressure through an annular gap, which is delimited by an extrusion die provided on an extrusion head and a axially adjustable mandrel and which can be adjusted with regard to the width thereof. The extruded plastic tube is introduced into a mold cavity of a blow-molding tool arrangement, blow-molded into a plastic container in accordance with the mold cavity by overpressure and then demolded. Additional plastic material is added in metered quantity to the extruded plastic tube at least in some regions in the direct vicinity of the mouth of the extrusion die.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: September 22, 2015
    Assignee: ALPLA WERKE ALWIN LEHNER GMBH & CO. KG
    Inventor: Johann Künz
  • Patent number: 8992196
    Abstract: A seamless capsule manufacturing apparatus (1) manufactures a seamless capsule by means of nozzles (2a-2d). A core liquid (5) and a coating liquid (6) are supplied to each of the nozzles (2a-2d) from pumps (16, 18) through distributors (21, 22). The distributors (21, 22) and the nozzles (2a-2d) are connected to each other by core liquid distributing tubes (23a-23d) and coating liquid distributing tubes (25a-25d), and each of the core liquid distributing tubes (23a-23d) and each of the coating liquid distributing tubes (25a-25d) have the same length. A vibrator (24) is mounted to the distributor (21), and the core liquid (5) is supplied to the nozzles (2a-2d) while being vibrated. Each of the distributors (21, 22) is provided with an air vent device (35), and air vent is performed appropriately.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: March 31, 2015
    Assignee: Freund Corporation
    Inventors: Masayuki Ikeda, Hiroshi Nagao
  • Publication number: 20150064296
    Abstract: An annular co-extrusion die for extruding multi-layer tubular plastic film has inner die mandrels stacked one upon another. Each die mandrel has a generally U-shaped cross-section with side walls extending substantially in parallel with the longitudinal axis of the die. The outer surfaces of the die side walls each have a series of helical shaped grooves formed therein. An annular outer die member surrounds the first inner die mandrel and the inner surface of the outer member and the outer surface of the first inner die mandrel form a longitudinally extending annular extrusion passage. Additional longitudinally extending annular extrusion passages are formed between outer and inner surfaces of nesting inner die mandrels.
    Type: Application
    Filed: September 4, 2013
    Publication date: March 5, 2015
    Applicant: Macro Engineering & Technology Inc.
    Inventor: Miroslav Planeta
  • Patent number: 8944798
    Abstract: A gas assisted co-extrusion apparatus includes a co-extrusion die in communication with an extruder. A nozzle that is defined by a bore in the co-extrusion die extends about a nozzle axis to a nozzle exit of the co-extrusion die. An injector extends through the bore of the co-extrusion die along the nozzle axis. The injector and nozzle together form a dough into a rope that is tubular with a wall portion and an inner cavity surrounded by the wall portion as the dough is extruded out of the nozzle exit and about the injector. A compressed gas source provides a compressed gas out of an injector outlet and into the inner cavity of the rope to radially stretch the wall portion of the rope as the rope is dispersed from the injector. The co-extrusion die is spaced from the extruder to define a void therebetween. A delivery system delivers an entrainable material to the compressed gas in a pipe. The pipe is connected to an injector inlet of the injector in the void.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: February 3, 2015
    Assignee: Kellogg Company
    Inventors: Norbert Gimmler, Helbert David Almeida Dominguez, Charles Bernath, Charles A. Smith, Penny Engle
  • Patent number: 8899954
    Abstract: In a crosshead, a pair of sheets (7) are formed by bisecting a parison (3) suspended from a resin flow passage (30) formed between a core (9) and a die (8) by causing a first dividing body (33) of a separator (5, 5a) provided on the core (9) or the die (8) to contact a second dividing body (40) provided on the core (9) or the die (8).
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: December 2, 2014
    Assignees: The Japan Steel Works, Ltd., Yachiyo Industry Co., Ltd.
    Inventors: Yuji Ito, Ryuichi Kawachi, Naoto Saito, Yukio Fujiwara, Satoru Araya, Kazuhiro Ohtaki, Masahiro Niihori, Takatoshi Watanabe, Naoya Tabuchi, Wataru Iwase
  • Patent number: 8870561
    Abstract: A layer sequence repeater module for a co-extrusion die includes a cell formed of a plurality of thin annular disks stacked on top of each other in an axial direction of the co-extrusion die. Each disk includes a plurality of openings aligned with openings in the adjacent disks, thus forming multiple inner and outer melt passages. At least one of the layer sequence repeater module includes at least one first cap disk, at least one second cap disk, at least one distribution disk, at least one repeater disk and at least one spreader disk. The layer sequence repeater module may be a separately assembled and individually removable module of the co-extrusion die. Alternatively or additionally, the layer sequence repeater module may be incorporated into a module of the co-extrusion die.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: October 28, 2014
    Assignee: BBS Corporation
    Inventor: Henry G. Schirmer
  • Publication number: 20140271962
    Abstract: A triple parison flowhead apparatus for producing three multi-layer parisons simultaneously. The triple parison flowhead includes a first parison flowhead, a second parison flowhead, and a third parison flowhead substantially abutted to one another. Each flowhead includes a plurality of rings having flow passages, defining a center axis, and having an annular flow conduit in fluid communication with the flow passages and a plurality of ports. A set of mold plattens having a width is located adjacent to the first, second, and third parison flowheads. The flow passages in each ring are defined by a height and a diameter of each ring, and a combination of the width of the mold plattens and the flow passages minimizes the center-to-center distances between the three parison flowheads.
    Type: Application
    Filed: January 27, 2014
    Publication date: September 18, 2014
    Applicant: Graham Packaging Company, L.P.
    Inventor: Robert Grzegorz Rogaczewski
  • Publication number: 20140272283
    Abstract: Methods and systems for co-extruding multiple polymeric material flow streams into a mold cavity to produce a molded plastic article having an injection-formed aperture in gate region of the article are disclosed herein. A method includes providing a valve pin having a distal portion with a first diameter and a mid-portion with a second diameter smaller than the first diameter and providing a mold defining a cavity corresponding to a shape of a resulting molded plastic article. The mold has a recess aligned with a gate region of the mold, extending into the mold and configured to receive the distal portion of the valve pin when the distal portion of the valve pin extends beyond the gate region.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventor: Kortec, Inc.
  • Patent number: 8801987
    Abstract: An extrusion apparatus for extruding multiple streams of extrusion material as extruded end-products and in the coating of substrates. A flow joiner in an extrusion head combines multiple metered streams such as from a gear pump, into a uniform extrusion flow.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: August 12, 2014
    Assignee: Southwire Company, LLC
    Inventor: Stephen Lee Spruell
  • 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: 20140170254
    Abstract: In an elastomeric tube and a method for making such a tube, two medical-grade silicone rubber compositions are coaxially coextruded to form a tube. The compositions respectively differ in at least one physical property and respectively have similar curing conditions. The two compositions are blended at an interface formed between the two compositions during the coextruding, so that between 1-99% of the tube forms a blended gradient. The coextruded tube is then cured.
    Type: Application
    Filed: February 24, 2014
    Publication date: June 19, 2014
    Applicant: ST. JUDE MEDICAL AB
    Inventor: Kenneth Dowling
  • Publication number: 20140159275
    Abstract: A large concentric co-extrusion die (1) is described having a plurality of annular or conical die mandrel layers (201-205). Each layer is formed between a pair of adjacent annular or conical die mandrels (101-106) defining between them a flow path for molten thermoplastics material from an inlet to an annular extrusion outlet (110) through which a thermoplastics tubular extrusion is formed in use. Extrusion takes place through the multiple annular layer outlets (301-305) to form a multi-layered product. At least one layer (203) of the annular or conical die mandrels has a plurality of molten material inlets arranged around the external circumference of the co-extrusion die with each inlet being connected to a feed channel (403) which has plural bifurcations (403.1, 403.2, 403.3) providing 2n subsidiary outlet feed channels (503) where n is the number of bifurcations. Each subsidiary outlet feed channel being connected to a corresponding helical outlet channel (703).
    Type: Application
    Filed: July 19, 2012
    Publication date: June 12, 2014
    Applicant: PLASTIKA KRITIS S.A.
    Inventors: Emmanouil Lempidakis, Ioannis Melas, Minas Kalarakis
  • Patent number: 8702413
    Abstract: An extrusion process incorporates a forming manifold where a tubular flow of a second material is intermittently interrupted while a core flow of a first material is discharged substantially continuously. Subsequently, the core flow is severed to form individual food items or treats for humans, animals, and the like, where the tubular flow results in an outer component surrounding an inner component which protrudes from one or both ends of the outer component. Material of the core flow is bone-like, while material of the tubular flow is meat like. Material of the tubular flow may include material from the core flow subjected to mixing in a static mixer to achieve a marbled texture of the outer material.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: April 22, 2014
    Assignee: Big Heart Pet Brands
    Inventors: Donald Barnvos, Hilda Fleischman, Davor Juravic, William Keehn, Steven Bautista, Eric J. Lew, Yomayra Diaz, Franjo Baltorinic
  • Patent number: 8696341
    Abstract: The invention relates to a device for producing concrete blocks, particularly paving stones, building blocks or the like, comprising a storage container forming a receiving chamber for a plurality of layers of concrete in different colors. Dispensing means are provided, in order to dispense partial amounts of the layers from the receiving chamber such that a release device connected downstream receives a mixture of the layers of concrete in different colors. At least a partial section of a side wall of the receiving chamber is provided with at least one dispensing opening for dispensing a partial amount of the layers. The size of the passage of the dispensing opening can be varied by the dispensing means.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: April 15, 2014
    Assignee: Baustoffwerke Gebhart & Soehne GmbH & Co. KG
    Inventors: Manfred Staehle, Hans Gebhart
  • Publication number: 20140091492
    Abstract: A problem to be solved by this invention is to control the above-described problem of delamination in the laminated and biaxially drawn, blow molded bottle.
    Type: Application
    Filed: October 18, 2013
    Publication date: April 3, 2014
    Applicant: YOSHINO KOGYOSHO CO., LTD.
    Inventors: Tamotsu TOYODA, Hiroshi HOSOKOSHIYAMA, Yasuhiro ISHIZAWA, Hideaki SOYAMA
  • Patent number: 8684719
    Abstract: Die tooling is formed by forming a series of passages extending in the length of the tooling where each passage has a circumference defined within a body member of the tooling. Preferably the passages are primarily formed using a drilling procedure. The passages define a predetermined pattern of outlets adjacent the extrusion outlet or outlets. The passages between the inlets and outlets can be formed in a series of connected body members with each passage extending through each body member. Die tooling of this design is more robust and cost effective to manufacture.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: April 1, 2014
    Inventors: Manfred A. A. Lupke, Stefan A. Lupke
  • Patent number: 8673197
    Abstract: A multi-layer structure comprising a functional resin layer obtained by covering a core layer of a base body resin or a second functional resin with a shell layer of a first functional resin, and a base body resin layer containing the functional resin layer therein. The layers of the functional resins are formed at positions where they are allowed to exhibit their functions to a sufficient degree, a plurality of functions can be imparted, and a molten resin mass having the above multi-layer structure can be formed by the compression-forming.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: March 18, 2014
    Assignee: Toyo Seikan Kaisha, Ltd.
    Inventors: Makoto Etoh, Hiroaki Goto, Atsushi Kikuchi
  • Publication number: 20130344271
    Abstract: A multi-layer extrusion die assembly includes a body, a main bore extending longitudinally through the assembly, a core tube, and a plurality of dies. The extrusion die assembly is configured to receive an input stream of material and divide the input stream into a plurality of material streams. Each die is configured to receive one or more of the material streams and to form a single continuous layer of material about the core tube. The layer formed by each die has one or more weld lines running longitudinally along the layer. The dies are arranged along the core tube such that a plurality of concentric layers of material is formed around the core tube. Each die is rotated axially with respect to adjacent dies such that the weld lines of the layer formed by one die.
    Type: Application
    Filed: April 26, 2013
    Publication date: December 26, 2013
    Applicant: GUILL TOOL and ENGINEERING Co., Inc.
    Inventor: Roger GUILLEMETTE
  • 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: 8574653
    Abstract: An extrusion process incorporates a forming manifold where a tubular flow of a second material is intermittently interrupted while a core flow of a first material is discharged substantially continuously. Subsequently, the core flow is severed to form individual food items or treats for humans, animals, and the like, where the tubular flow results in an outer component surrounding an inner component which protrudes from one or both ends of the outer component. Material of the core flow is bone-like, while material of the tubular flow is meat like. Material of the tubular flow may include material from the core flow subjected to mixing in a static mixer to achieve a marbled texture of the outer material.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: November 5, 2013
    Assignee: Del Monte Corporation
    Inventors: Donald Barnvos, Hilda Fleischman, Davor Juravic, William Keehn, Steven Bautista, Eric J. Lew, Yomayra Diaz, Franjo Baltorinic
  • Patent number: 8562320
    Abstract: A resin molding device which molds a resin tube 1 from a molten resin has a tube molding portion 14 and a spindle 15 as jigs which define inner and outer diameters of the resin tube.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: October 22, 2013
    Assignees: National University Corporation Tohoku University, Nichias Corporation
    Inventors: Tadahiro Ohmi, Yasuyuki Shirai, Jiro Yamanaka, Kengo Iwahara, Kouji Fukae
  • Patent number: 8562885
    Abstract: Disclosed are multilayer film structures having annular profiles, and methods and apparatus of making the structures disclosed. The annular multilayer articles have a uniform thickness, at least four layers and comprise overlapped and non-overlapped circumferential areas; wherein the layer structure of the non-overlapped area is doubled in the overlapped layer. A method of making the structure includes providing a multilayer flow stream with at least four layers of thermoplastic resinous materials; feeding the multilayer flow stream to a distribution manifold of an annular die to form an annular multilayer flow stream; and removing the annular multilayer flow stream from the annular die to form the annular multilayer structure.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: October 22, 2013
    Assignee: Dow Global Technologies Inc.
    Inventors: Joseph Dooley, Jeffrey M. Robacki, Mark A. Barger, Robert E. Wrisley, Sam L. Crabtree, Calvin L. Pavlicek
  • Patent number: 8523552
    Abstract: The invention relates to a device for extruding plastic profiles, preferably plastic tubes, to which plasticized bulk plastic can be fed, and comprising a plurality of ring channels (5) combined by means of a flow conjunction (4) to a common melt channel (2). According to the invention, the tool (1) is divided into three functional areas, wherein the three functional areas are a distribution area (7), a cooling area (8), and a forming area (9), wherein cooling channels (3) are disposed about the ring channels (5) in the cooling area (8).
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: September 3, 2013
    Assignee: Battenfeld-Cincinnati Austria GmbH
    Inventor: Leopold Hackl
  • Patent number: 8496460
    Abstract: A method and apparatus is provided for distributing material through a multilayer pipe extrusion die. A first flow passageway, having a first cross-sectional area and extending along a first flow direction, may be connected to a second flow passageway, having a second cross-sectional area substantially the same as the first cross-sectional area of the first flow passageway, to provide a second flow direction different from the first flow direction of the first flow passageway. A conical passageway may extend from the second passageway toward a dispensing outlet. Material may be distributed from the first flow passageway into the second flow passageway. The method and apparatus may generally maintain the same flow properties of the material at a point before and after the connection of the first flow passageway and the second flow passageway. The flow properties of the material may be altered proximate to the outlet.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: July 30, 2013
    Assignee: Advanced Drainage Systems, Inc.
    Inventor: Gerald S. Sutton
  • Patent number: 8465272
    Abstract: Apparatus and methods for fabricating food items include extruding a first hot plastic food mass through multiple passages (14) and co-extruding a second hot plastic food mass through a feed stem (22) received in each of the multiple passages (14) and through nozzles (42). Each nozzle (42) includes a first portion (42b) in communication with the feed stem (22) but not the passage (14) and a second portion (42a) in communication with the passage (16) but not the feed stem (22). The nozzles (42) are rotatable in gearing relation with the drive gear (70) of a servomotor (72). The co-extruded ropes are conveyed at a linear speed rate less than or equal to the discharge speed from the nozzles (42), cooled, and cut into individual pieces in the form of peelably separable strands.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: June 18, 2013
    Assignee: General Mills, Inc.
    Inventors: James N. Weinstein, James M. Olive, Peter A. Huberg, Laurie Burgess, Thomas Leuhrs, Jennifer M. Mcaab
  • Publication number: 20130149403
    Abstract: A die for coextruding a plurality of fluid layers generally includes a primary forming stem, one or more distribution plates, and a microlayer assembly. The microlayer assembly includes a microlayer forming stem and a plurality of microlayer distribution plates.
    Type: Application
    Filed: February 13, 2013
    Publication date: June 13, 2013
    Applicant: CRYOVAC, INC.
    Inventor: Cryovac, Inc.
  • Publication number: 20130115324
    Abstract: An apparatus for the continuous production of a twin wall pipe has mold block halves supplied in pairs to form a mould, 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 centre longitudinal axis of the pipe head opens out between the external nozzle and internal nozzle.
    Type: Application
    Filed: October 24, 2012
    Publication date: May 9, 2013
    Inventor: Ralph Peter HEGLER
  • Patent number: 8398908
    Abstract: A method for the production of a plastics pipe (9) comprising an inner core and an outer removable skin bonded thereto, which method comprises co-extruding molten polymeric materials forming the inner core and the outer removable skin layer from one or more extruder dies, bringing the polymeric materials together and allowing them to solidify, and conditioning the solidified polymeric materials at a temperature and for a time sufficient to influence the adhesion of the outer skin layer to the inner core, such that on cooling the adhesion of the outer skin layer to the inner core is sufficient to prevent substantial undesired relative movement between the skin layer and the core during installation of the pipe (9), but insufficient to prevent the outer skin layer from being clearly removed by peeling, at least at the ends of the pipe (9), and insufficient to cause a substantial reduction in the impact strength of the inner core.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: March 19, 2013
    Assignee: Radius Systems Limited
    Inventor: Lawrence Richards
  • Publication number: 20130032968
    Abstract: A method for preparing coated binder units wherein the coated binder units comprise a core of binder coated with a layer of coating material, wherein the binder is a bituminous binder or a synthetic binder comprising a resin, an oil and optionally a polymer, which method comprises the steps of: (a) supplying the binder and the coating material to an co-extrusion device which comprises an even number of pairs of inner and outer dies, whereby the binder is supplied to the inner dies and the coating material is supplied to the outer dies; (b) co-extruding the binder and the coating material by means of the co-extrusion device, thereby producing streams of extrudate in which the binder is coated with a layer of the coating material; and (c) optionally, shaping the streams of extrudate, into units of the coated binder. The invention further relates to the co-extrusion device.
    Type: Application
    Filed: December 2, 2010
    Publication date: February 7, 2013
    Inventors: João Miguel De Amorim Novais Da Costa Nóbrega, Eurico Filipe Dias Pessoa, José António Colaco Gomes Covas
  • Patent number: 8297961
    Abstract: A cutter assembly for an extruder includes an elongated extrusion member having an open feed end. The open feed end is attachable in fluid communication with the extruder for supplying a mash to said elongated extrusion member. An extrusion die is supported on a front of the elongated extrusion member. The extrusion die includes an extrusion outlet formed therein. A filling tube is mounted on a rear of the elongated extrusion member and is attachable in fluid communication with the extruder for supplying a filling to the filling tube. A cutter member has a drivable end and a cutter blade with a cutting surface for cutting extrudate to a desired length as the extrudate exits the extrusion die. The cutter member is operably connectable at the drivable end to a drive device of the extruder for reciprocatably sliding the cutting surface of the cutter blade over and away from the outlet of the extrusion die.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: October 30, 2012
    Assignee: Kerry, Inc.
    Inventor: Thomas B. Hunter
  • Patent number: 8241656
    Abstract: Medical articles having a body member including natural biodegradable polysaccharides are described. The body member is formed from a plurality of natural biodegradable polysaccharides having pendent coupling groups. The body member can also include a bioactive agent which can be released to provide a therapeutic effect to a patient.
    Type: Grant
    Filed: November 11, 2005
    Date of Patent: August 14, 2012
    Assignee: Surmodics, Inc
    Inventors: Stephen J. Chudzik, Dale G. Swan, Michael J. Burkstrand
  • Patent number: 8231374
    Abstract: In certain aspects of the invention, an extrusion apparatus for making a multilayer article includes multiple discs, each of which has at least one passageway configured to permit fluid flow therethrough in a flow direction. At least one of the discs includes a cone shaped portion extending substantially parallel to the flow direction.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: July 31, 2012
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Albert K Chin, John Jianhua Chen, Thomas A. Svatek, Ronald A Sahatjian
  • Publication number: 20120187595
    Abstract: An extrusion molding die is provided which produces a tube that contains a portion in which the cross-sectional area ratio of an inner layer and outer layer in axial cross-section continuously varies, wherein said cross-sectional area ratio can be changed in a short time. The extrusion molding die 50 moves a second inner layer mandrel 54 in the axial direction and changes the flow passage volume of an inner layer resin flow passage 62a in accordance with changes in supply quantity of an inner layer forming resin.
    Type: Application
    Filed: January 24, 2012
    Publication date: July 26, 2012
    Applicant: TYCO HEALTHCARE GROUP LP
    Inventors: Atsushi Ohigawa, Tomoyuki Tamura, Shinichiro Yokota
  • Patent number: 8226398
    Abstract: The present invention provides an apparatus for inflation extrusion molding of pressure-sensitive adhesive sheet, including: one or a plurality of extruders; a die into which one or a plurality of resin materials are respectively introduced and which extrudes from an ejection opening the resin materials into an inflated cylindrical shape having a predetermined diameter in accordance with an inflation method; and two stabilizers facing each other at a predetermined angle so as to upwardly approach each other, and defining a space therebetween through which the cylindrically-shaped resin materials extruded from the die are passed to be deformed into a pressure-sensitive adhesive sheet in a flattened elliptical shape having a predetermined width, in which the stabilizers each have a plurality of air floating portions each of which blows air toward the resin materials; and the stabilizers rotate in one direction around the central axis of the cylindrically-shaped resin materials.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: July 24, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Kooki Ooyama, Shinsuke Ikishima, Naoto Hayashi, Tadao Torii, Toshihisa Yamane, Yuuki Katou
  • Publication number: 20120153530
    Abstract: An improved extrusion head assembly is provided. One embodiment of the head assembly includes a pipe and profile co-extrusion head assembly with an integrated co-extrusion adapter. Another embodiment includes a double compression extrusion head for pipe extrusion.
    Type: Application
    Filed: June 11, 2010
    Publication date: June 21, 2012
    Inventor: Hans Groeblacher
  • Patent number: 8192189
    Abstract: The invention relates to an arrangement in connection with extrusion tools. It comprises a nozzle structure which is provided with coaxially arranged nozzle elements (1, 2, 3, 4) and is arranged to form one or more layers which cover a flexible elongated element (6) on the surface of the flexible elongated element (3), which passes through the innermost nozzle element (4), and a guide member (5) corresponding the diameter of the elongated element (6) for controlling the flexible elongated element (6). The guide member (5) is arranged to be pushed in the direction of the elongated element (6) into its position inside the two innermost nozzle elements (3, 4) defining a first melt channel (7). The guide member (5) is arranged to provide a tapered space (52) between the elongated element (6) and the guide member (5), and the tapered space (52) is in fluid communication with the first melt channel (7).
    Type: Grant
    Filed: November 28, 2008
    Date of Patent: June 5, 2012
    Assignee: Maillefer S.A.
    Inventors: Eero Korolainen, Matti Sistola
  • Publication number: 20120135122
    Abstract: An extrusion die head for the extrusion of hollow or centre-filled shapes as well as apparatus comprising the extrusion die head and methods employing the die head. The extrusion die head (10) is for the preparation of a plurality of centre-filled products (34) of varying composition wherein each product comprises a first (filling) material and a second (outer) material. The die head comprises at least one tube (22) such that a first material may be extruded through the tube or tubes and a second material may be extruded around the tube or tubes. The location and the number of the tubes may be customised to vary the location and amount of the first material relative to the second material and thereby vary the composition of the centre-filled product. The extrusion die head apparatus comprises a sleeve (40) enclosing the die head. In one embodiment a first material is conveyed from one or more first apertures (18) via one or more tubes (22) to one or more second apertures (20) where it is extruded.
    Type: Application
    Filed: June 4, 2010
    Publication date: May 31, 2012
    Applicant: CADBURY UK LIMITED
    Inventor: Andrew Bufton
  • Patent number: 8162644
    Abstract: The invention is made to accelerate extrusion forming by reducing a friction between a forming rubber formed to cover a cord or formed to extrude and an inner wall face of a path at inside of a die as the die used for an extrusion forming head, a portion of an upstream portion of a rubber forming path (2) reaching a front end outlet (4) from a rubber storing portion (3) at inside of a die main body 1 is provided with a fluid sending inlet (8) for sending a fluid between an outer peripheral face of a forming rubber (R1) at inside of the rubber forming path (2) and an inner wall face of the path and a resistance of passing the forming rubber (R1) on a downstream side is reduced by the fluid.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: April 24, 2012
    Assignee: Toyo Tire & Rubber Co., Ltd.
    Inventors: Shigeo Kudo, Tetsuo Tatara, Osamu Fujiki
  • Patent number: 8157555
    Abstract: An extrusion feed device for a composite resin capable of forming a composite resin extruded material having a variety of layer configurations not necessarily symmetrical. A plurality of cylindrical flow passages (3) and (4) for feeding a molten resin, an opening/closing valve (7) capable of opening/closing a center flow passage (36) and a cylindrical flow passage (4a), and a center opening/closing valve (39) capable of opening/closing the center flow passage are provided at the upstream side end part (2a) of a discharge passage (2) for delivering the composite resin extruded material. A main resin (30a) forming an outside layer is always fed from the cylindrical flow passage (3), and the other molten resin (30b) and/or (30c) as an auxiliary resin is fed, at a proper timing, from the cylindrical flow passage (4) and the center flow passage (36) on the inside into the molten resin (30a) on the outside by controlling the opening/closing valve (7) or the center opening/closing valve (39).
    Type: Grant
    Filed: January 12, 2005
    Date of Patent: April 17, 2012
    Assignee: Toyo Seikan Kaisha, Ltd.
    Inventors: Hotaka Fukabori, Tsuneo Imatani, Makoto Etoh, Kazunobu Watanabe
  • Publication number: 20120040078
    Abstract: An extruder die designed to produce a spiral corn-based snack food product with consistent, tight spiral pitch and the resultant food product. The extruder die has a center post parallel to the flow path along with three cone-shaped receiving ports arranged in a cloverleaf pattern around the center post. The die has three curved slots on the output side of the die which are in fluid communication with the cone-shaped receiving ports. At the distal end of each of these slots is a semi-circular tip. The tip has a diameter larger than the width of its associated slot. Further, the tip is located at the apex of a cone-shaped receiving port with which it is in fluid communication, thus providing for the highest flow velocity of the extrudate through the tip. The resultant flow profile produces the consistent spiral shape of the snack product produced by the die design described.
    Type: Application
    Filed: August 15, 2011
    Publication date: February 16, 2012
    Applicant: FRITO-LAY NORTH AMERICA, INC.
    Inventors: Shalaka Narwankar, Richard James Ruegg
  • Patent number: 8092204
    Abstract: The present invention provides an apparatus for inflation extrusion molding of pressure-sensitive adhesive sheet, the apparatus including: one or a plurality of extruders; a die into which one or a plurality of resin materials including at least a resin material for forming a pressure-sensitive adhesive layer and extruded respectively from the extruders are respectively introduced and which extrudes from an ejection opening the resin materials into an inflated cylindrical shape having a predetermined diameter in accordance with an inflation method; and two stabilizers facing each other at a predetermined angle so as to upwardly approach each other, and defining a space therebetween through which the cylindrically-shaped resin materials extruded from the die are passed to be deformed into a pressure-sensitive adhesive sheet in a flattened elliptical shape having a predetermined width, in which the stabilizers each have a plurality of air floating portions each of which blows air toward the resin materials; and
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: January 10, 2012
    Assignee: Nitto Denko Corporation
    Inventors: Kooki Ooyama, Shinsuke Ikishima, Naoto Hayashi, Tadao Torii, Toshihisa Yamane, Yuuki Katou