Agitator Or Kneader Comprises Means Rotating About A Horizontal Axis Patents (Class 425/209)
  • Patent number: 11077598
    Abstract: Lower discharge temperatures and improved flow rates are obtained for the processing of meltable, solid crosslinkable compositions comprising a polymer, e.g., polyethylene, and a peroxide, in a single barrel extruder by equipping the extruder with an energy transfer (ET) screw that comprises: (1) an ET section with a distance averaged ET section depth of 8.0% to 10% of the extruder barrel internal diameter, and (2) a metering section with a metering section depth of 6.0% to 8% of the extruder barrel internal diameter.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: August 3, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: Qian Gou, Mark A. Spalding, Bharat I. Chaudhary, Karl Seven
  • Publication number: 20150064297
    Abstract: An extruder includes a machine base, a cylinder connected with one end thereof to the machine base and defining a feeding section adjacent to the machine base, a feed port at the feeding section and a discharge port at an opposite end, a screw pivotally connected with one end thereof to the machine base and accommodated in the cylinder and rotatable in the cylinder by an external force, a feed tank having a top through hole and a bottom through hole and connected to the feed port of the cylinder, a control valve mounted in the top through hole and operable to open or close the feed tank, and a vacuum pump connected to the feeding section of the cylinder through a piping and operable to pump air out of the feeding section and to further leave a vacuum in the feeding section.
    Type: Application
    Filed: August 30, 2013
    Publication date: March 5, 2015
    Applicant: Ko Win Yang Industrial Co., Ltd
    Inventor: Mu-Tsang YANG
  • Patent number: 8864486
    Abstract: A twin screw extruder includes a barrel having a chamber, a discharge port, an extrusion molding die coupled to the discharge port of the barrel, axially extending first and second screw shafts, and a screw shaft support. The screw shaft support includes first and second spacer bearings disposed on the first and second screw shafts, and a first cross member including first and second loops slidably coupled to the first and second spacer bearings. A second cross member is spaced apart from the first cross member by a connection member, and also includes first and second loops slidably coupled to the first and second spacer bearings. The connection member is situated between the first spacer bearing and the second spacer bearing, and connected to the first cross member and the second cross member.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 21, 2014
    Assignee: Corning Incorporated
    Inventors: Matthew Joseph Dispenza, Christopher John Malarkey, Kenneth Charles Sariego
  • Patent number: 8758004
    Abstract: An extruder comprises an extruding section, a chamber drum, and a forming section. The extruding section kneads and extrudes a kneaded material including a ceramic raw material. The chamber drum includes a first space portion which extends from the extrusion port side of the extruding section in an extruding direction and allows the kneaded material to flow in the extruding direction, and a second space portion which extends from a downstream side of the first space portion in a downward direction, allows the kneaded material to flow in the downward direction different from the extruding direction, and has a discharge port to discharge the kneaded material. The forming section includes a die through which the kneaded material discharged through the discharge port of the chamber drum is pushed out, to extrude and form ceramic formed bodies.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: June 24, 2014
    Assignee: NGK Insulators, Ltd.
    Inventors: Yuichi Tajima, Masashi Ono
  • Patent number: 8678806
    Abstract: Apparatus for bonding at least two plies of a fibrous web, includes: a first roller having an outer periphery, at least one embossing protuberance provided on the outer periphery; and a second roller having an outer periphery and being elastic at least in a radial direction, the second roller including at least an inner layer and an outer layer that is harder than the inner layer, the second roller together with the first roller forming a nip through which the two plies are to be fed, wherein an embossing element is located on top of at least one of the embossing protuberance(s), an embossing area of each embossing element being smaller than an embossing area of the corresponding embossing protuberance(s) so that the two plies are bonded at discrete locations corresponding to the first and second embossing elements. Multi-ply product including the bonded plies and corresponding method are also described.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: March 25, 2014
    Assignee: SCA Hygiene Products GmbH
    Inventors: Jurgen Sauter, Harald Harlacher, Joachim Leonhardt, Thomas Heilemann
  • Patent number: 8585389
    Abstract: Device (1) for manufacturing a rubber strip material comprising cord material. The device comprises an extruder (4) with an integrated gear pump (13) with adjustable pump speed and with a conveying screw for extruding unvulcanised rubber around the cord material for the purpose of producing a continuous rubber strip. The device furthermore comprises a control unit (15) for adjusting the pump speed of the gear pump, a measuring unit (16) for measuring the height and the width of the rubber strip and for emitting a measuring signal indicative of the measured height and width. The measuring unit can be connected to the control unit for adjusting the pump speed of the gear pump for emitting the measuring signal to it, wherein the pump speed of the gear pump can be controlled by the control unit at least based on the measuring signal.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: November 19, 2013
    Assignee: VMI Holland B.V.
    Inventors: Jan Kornelis Grashuis, Cornelis Wouteres Janszen
  • Publication number: 20130095289
    Abstract: Disclosed is a materials handling system, a patterned product, and process of fabricating a patterned product. The materials handling system includes an agitation portion having one or more agitators, the agitators arranged and disposed to mix colored particles into a substantially uniform distribution. A processing portion includes a receiving portion arranged and disposed to receive the substantially uniform distribution of the colored particles to form a product with a predetermined pattern. The predetermined pattern is a long-grained, striated or jaspe-grained color pattern. The process includes fabricating a product having such a predetermined pattern. The predetermined pattern is through-patterned as to include colors and textures distributed uniformly throughout the thickness of the product.
    Type: Application
    Filed: October 17, 2011
    Publication date: April 18, 2013
    Applicant: ARMSTRONG WORLD INDUSTRIES, INC.
    Inventors: Randy A. FRIEDEL, Edwin George MILOVICH, Gregory R. LOVELL, Paul H. WELCH
  • Publication number: 20120320707
    Abstract: A food processing apparatus comprises a device for dispensing discrete morsels of food product, such as confection, the device comprising: a hopper for receiving the morsels, the hopper having a discharge chute for discharging the morsels by means of gravity; and an auger having a drive end for rotatably driving the auger and a discharge end for dispensing the morsels, the helical fighting of the auger communicating with the chute of the hopper. The device is arranged such that the auger is inclined at non-vertical angle, such as an angle of 30 to 60 degrees to the vertical, such that the discharge end of the auger is higher than the drive end of the auger. Also provided is a food processing method comprising dispensing discrete morsels of food product using the food processing apparatus.
    Type: Application
    Filed: October 2, 2009
    Publication date: December 20, 2012
    Applicant: NESTEC S.A.
    Inventors: Janet T. Planet, Darryl Richard Barwick
  • Publication number: 20120269919
    Abstract: An agitating feeder is provided in a compression molding machine that includes at least one die having a die bore, an upper punch and a lower punch retained respectively above and below the die so as to be vertically slidable, and a compression mechanism for compressing and molding a powdery material filled in the die bore by the upper punch and the lower punch. The agitating feeder includes an agitating rotor for rotating to agitate the powdery material, a housing accommodating the agitating rotor, and a gas flow device for flowing gas in the housing.
    Type: Application
    Filed: April 17, 2012
    Publication date: October 25, 2012
    Applicant: Kikusui Seisakusho Ltd.
    Inventors: Yoshitsugu Oneda, Hidehiro Nihei
  • Publication number: 20120258188
    Abstract: In an extruder-type noodle maker comprising a casing constituted as a cylindrical body, a screw, a nozzle unit, a connector, a hopper, and a drive unit, the nozzle unit is formed with many holes tapered in the outlet direction, an inner peripheral surface of the nozzle unit is provided with multiple engaging protrusions and depressions, an end surface of the distal end periphery of the cylindrical casing is provided at corresponding locations with multiple receiving depressions and protrusions for insertion into the engaging protrusions and depressions, and the cylindrical casing is constituted by forming a proximal end section thereof positioned under the hopper of resin and forming a distal end thereof near an outlet of metal, whereby it has a structure comprising a resin portion and a metal portion joined together.
    Type: Application
    Filed: October 29, 2009
    Publication date: October 11, 2012
    Inventor: Eiji Sugano
  • Publication number: 20120148702
    Abstract: A die assembly for use with an extruder is disclosed. The die assembly has a preformer die having a preformer shaped hole for forming the desired shape of a component to be extruded, wherein the shaped hole is not symmetrical and has a small first end and a large second end. The die assembly further includes a final die plate having a final shaping hole, the final shaping hole is not symmetrical and has a large first end and a small second end. The preformer die and the final die plate are positioned adjacent each other wherein the small first end of the preformer shaped hole is aligned with the large first end of the final shaping hole, and wherein the large second end of the preformer shaped hole is aligned with the small second end of the final shaping hole.
    Type: Application
    Filed: December 10, 2010
    Publication date: June 14, 2012
    Inventors: Michael Worth Herndon, Donald Van Earnest, Kenneth Eugene Day, Ernest Wilford Looman, JR.
  • Publication number: 20120043271
    Abstract: The present invention relates to a filter apparatus having a cylindrical housing and a plurality of hollow fibers, with the hollow fibers being combined to form a bundle in the housing and being embedded and held in each case at the end sides in a molding compound. The invention furthermore relates to a method for the manufacture of a filter apparatus, to a rotation apparatus and its use for the manufacture of a filter apparatus as well as to a dialysis machine having a filter apparatus.
    Type: Application
    Filed: April 13, 2010
    Publication date: February 23, 2012
    Inventor: Matthias Maurer
  • Publication number: 20110217406
    Abstract: A novel barrier screw scientifically designed with new structural features that eliminate the shortcomings of the previous barrier screws and further improve their performance. The important new structural features include a structure of originating the barrier flight without creating any dead-spot while maintaining a constant solid channel width, a structure of terminating the barrier flight without creating any dead-spot while assuring good melt quality, a melt channel structure of avoiding excessively deep channel depth while assuring sufficient melt conveying capacity, and a solid channel structure of avoiding excessively large channel area with shallow channel depth while assuring good melt quality.
    Type: Application
    Filed: March 5, 2010
    Publication date: September 8, 2011
    Inventor: Chan I. Chung
  • Patent number: 7998514
    Abstract: A device to mix and extrude various ingredients including pastas, pastries, baked goods, hors d'oeuvres, and cookies. The. device includes novel measuring, mixing and extrusion arrangements including: an automatic measuring cup; a way to continuously mix and extrude ingredients without intervening cleanings; a mixing and extrusion feed for handling different consistencies of ingredients; an integrated automatic cutter; motor cooling and extruded ingredient drying; as well as various safety devices.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: August 16, 2011
    Assignee: Ronco Holding, Inc.
    Inventors: Alan L. Backus, Ronald M. Popeil
  • Publication number: 20110180949
    Abstract: The present invention relates to screw elements with novel, tightly intermeshing, self-cleaning, co-rotating screw profiles for multishaft screw machines with pairs of co-rotating and fully abrading screw shafts, to the use of these screw elements in multishaft screw machines and to a method of generating these screw elements.
    Type: Application
    Filed: June 9, 2009
    Publication date: July 28, 2011
    Applicant: BAYER TECHNOLOGY SERVICES GMBH
    Inventors: Michael Bierdel, Thomas König, Ulrich Liesenfelder
  • Patent number: 7896638
    Abstract: A crushing and mixing device includes a mixing vessel in which a plurality of blades installed on a rotary shaft which is rotated by a motor as a driving source and freely rotatably supported, to mix and crush materials. A spiral vane is equipped to supply the materials which are introduced to a rotary shaft corresponding to an inlet from materials, to the mixing vessel; at least two blades are installed on the rotary shaft at an inclined angle; an outlet disposed at a side of a wall of the mixing vessel; the materials are mixed and crushed in the mixing vessel, and an entrained moisture therein is dewatered by the heat generated by actions of shearing, friction and compression; and a molten binder is impregnated in the dehydrated materials.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: March 1, 2011
    Assignee: M & F Technology Co., Ltd.
    Inventor: Masachika Morimoto
  • Publication number: 20110042853
    Abstract: An electrically-driven injection molding system with a dual-driving function comprises an electric apparatus with a dual-driving function, a plasticizing unit, an injection unit, an injection carriage, a guide frame, and a base, wherein the electric apparatus with a dual-driving function is connected with the plasticizing unit and the injection unit, the guide frame is connected with the electric apparatus with a dual-driving function and the injection unit, and the electric apparatus with a dual-driving function, the plasticizing unit, the injection unit, the injection carriage, and the guide frame are installed on the integral base. An injection molding method is realized using the system. The system has an obviously simplified and compact structure, thus reducing the manufacturing cost, lowering the energy consumption, obviously extending the service life of the motors and ball screws, and making easy to popularize.
    Type: Application
    Filed: March 13, 2009
    Publication date: February 24, 2011
    Inventor: Hanxiong HUANG
  • Patent number: 7866876
    Abstract: The invention relates to a device for the extrusion of thermoplastic synthetic material featuring an extruder screw (2) which is mounted on a housing (1) including a plasticizing section (P) at the inlet side, a degassing section which is mounted upstream on a discharge section (A) and a conveying outlet (3) operating in the opposite direction which is located between the plasticizing section (P) and the degassing section (E). A flow channel (5) that contains a melt filter (4) is bridged over by at least one of the conveying outlets (3) in the opposite direction. To create favorable production conditions, the extruder screw (2) forms a similar conveying outlet (7) operating in the same direction between the conveying outlet (3) in the opposite direction and the downstream port (6) of the flow channel (5). The housing (1) has at least one degassing vent (8) at the transition area of the conveying outlet (3) operating in the opposite direction and the conveying outlet (7) operating in the same direction.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: January 11, 2011
    Assignee: EREMA Engineering Recycling Maschinen und Anlagen Gesellschaft m.b.H.
    Inventor: Helmuth Schulz
  • Publication number: 20100310700
    Abstract: The invention relates to an apparatus for extruding thermoplastic material, comprising an extruder screw (2) which is mounted in a housing (1), comprises a plasticizing section (P) on the inlet side, a degasification section (E) upstream of an outlet section (A), a flow arrester (S) between the plasticizing section (P) and the degasification section (E) with a screw section with a counter-rotating delivery flight (3), and at least one flow channel (5) bridging the flow arrester (S) and containing a melt filter (4). In order to reduce the driving power of the extruder screw (2) it is proposed that a sleeve (7), which encompasses the screw (6) and is mounted in the housing (1) in a rotationally fixed manner, is associated with the screw section that forms the flow arrester (S), and the screw (6) in the screw section of the flow arrester (S) has a smaller screw diameter in relation to the plasticizing section (P) and preferably also to the degasification section (E).
    Type: Application
    Filed: January 14, 2009
    Publication date: December 9, 2010
    Inventor: Helmuth Schulz
  • Publication number: 20100260882
    Abstract: High-capacity extrusion die assemblies (20, 90, 130, 140, 180, 252) each having a tubular sections (44, 146, 162, 268) and an elongated, axially rotatable, helically flighted screw section (56, 56a, 152, 168, 276, 278) which cooperatively define frustoconical, outwardly diverging material flow paths (75, 160, 291) at constant or differing divergence angles of from about 1-11°. The use of diverging tubular sections (44, 146, 162, 268) and screw sections (56, 56a, 152, 168, 276, 278) permits the use of larger die plates (76, 118, 292) with an increased number of die openings (80, 124, 296). This allows significant increases in extrusion production rates. The die assemblies (20, 90, 130, 140, 180, 252) can be used in the production of a wide number of human foods or animal feeds, and particularly aquatic feeds of the floating or sinking variety.
    Type: Application
    Filed: April 8, 2009
    Publication date: October 14, 2010
    Applicant: Wenger Manufacturing, Inc.
    Inventors: Joseph P. Kearns, Galen J. Rokey, Philip B. Wiltz, Anthony L. Bruning, Lafe N. Bailey
  • Patent number: 7789645
    Abstract: A structural cementitious panel, produced by a multi-layer process including providing a moving web; b. one of depositing a first layer of loose fibers upon the web and c. depositing a layer of settable slurry upon the web; d. depositing a second layer of loose fibers upon the slurry; e. embedding said second layer of fibers into the slurry; and f. repeating steps c. through e. until the desired number of layers of settable fiber-enhanced slurry in the panel is obtained. Also provided are an apparatus suitable for producing structural cementitious panels according to the present process, and a structural cementitious panel having multiple layers, each layer created by depositing a layer of settable slurry upon a moving web, depositing fibers upon the slurry and embedding the fibers into the slurry such that each layer is integrally formed with the adjacent layers.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: September 7, 2010
    Assignee: United States Gypsum Company
    Inventors: Ashish Dubey, Joe W. Chambers, Aaron Greengard, Alfred C. Li, D. Paul Miller, Michael J. Porter
  • Patent number: 7736565
    Abstract: The invention provides process for producing a PPE resin composition containing PPE powder using an extruder comprising: a vent pipe; a polyphenylene ether (herein after referred to as “PPE”) powder supplying pipe; an extruder supply hopper having an opening with a wall angle of 60° or more; and an extruder unit, wherein the vent pipe and the PPE powder supplying pipe each have an terminal orifice located in the opening of the extruder supply hopper, and wherein the PPE powder supplying pipe is disposed at a gear box-side portion of the extruder supply hopper, and the vent pipe is disposed at a die-side portion, relative to the PPE powder supplying pipe, of the extruder supply hopper, which process comprises the steps of: supplying the PPE powder to a gear box-side wall of the extruder supply hopper through the PPE powder supplying pipe; removing a gas accompanying the PPE powder in an effective amount through the vent pipe; and melt-kneading a mixture containing the degassed PPE powder with the extruder unit
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: June 15, 2010
    Assignee: Asahi Kasei Chemicals Corporation
    Inventor: Yoshio Ota
  • Patent number: 7629435
    Abstract: A method for producing a masticated rubber, which comprises the steps of masticating rubber at a shear rate of from 500 to 4,500 (l/s); and obtaining masticated rubber having a weight-average molecular weight of from 100,000 to 1,300,000.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: December 8, 2009
    Assignee: Nitto Denko Corporation
    Inventors: Tomoo Yamaguchi, Mitsuhiko Tsuji, Yasunobu Ina
  • Publication number: 20090295031
    Abstract: Method and apparatus for casting a concrete product with a substantially horizontal slipform casting process, concrete mix in said method being fed by means of at least one feed screw (1) through a limited cross-section for forming the concrete product, whereby the feed screw (1) is brought to circular motion on a plane transversal with respect to the length of the feed screw.
    Type: Application
    Filed: June 1, 2009
    Publication date: December 3, 2009
    Applicant: Elematic Group Oy
    Inventors: Heikki LEHTONEN, Aimo SEPPANEN
  • Publication number: 20090162470
    Abstract: At least one section of the screw (11) has a wear-protection layer (13) and at least one other section of the screw preferably has an anti-friction layer (18). In a solid rod (11?), abed (12) for the wear-protection layer (13) is first formed, and in this the wear-protection layer (13) is then applied, and finally the interstices (14) between the screw flights (15) are formed. According to the invention, the wear-protection layer (13), for example composed of tungsten carbide, is applied by build-up welding, and the interstices (14) are formed with lateral separation (16, 16?) with respect to the wear-protection layer (13). For production of the anti-friction layer, the dimension of that/those section(s) of the screw (11) where the anti-friction layer, e.g. composed of molybdenum, is to be applied is reduced below specification, while providing lateral separation (19) with respect to the wear-protection layer. The anti-friction layer is then applied in the under-dimensioned region (17).
    Type: Application
    Filed: June 6, 2007
    Publication date: June 25, 2009
    Inventor: Erwin Schnabl
  • Patent number: 7550100
    Abstract: A process and apparatus for producing a paper product, in which paper (M) in a particular form, and mixed with water, is subjected to pressure to form a compacted mass which involves, or includes, depositing the mix onto a first conveyor belt (10) and then progressively forming the conveyor belt into an upwardly open U-shape configuration and compressing the mix by means of a second conveyor belt (20) guided to progressively enter the first conveyor belt and progressively compact the mix.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: June 23, 2009
    Assignee: Fibrecycle Pty Ltd
    Inventor: Donald Barry Webb
  • Publication number: 20090148548
    Abstract: A method for making foam products steps of preparing variety of foam materials with different colors, mixing the materials in a final tank, feeding the materials in a mold, heating the materials which are then foamed to form a product which is then removed from the mold and cooled. The method is proceeded by a device which includes first tanks for receiving the variety of foam materials, second tanks for being fed with pre-set amount of the variety of foam materials, and a final tank which has mixture of the variety of foam materials. The mixture is then sent to a mold to be heated and foamed.
    Type: Application
    Filed: January 6, 2009
    Publication date: June 11, 2009
    Applicant: DEAN SHOES COMPANY LTD.
    Inventor: Min-Hui Wang
  • Publication number: 20090098234
    Abstract: A screw is provided for an injection unit having an inner diameter surface and a raised outer diameter surface on the screw flights. Carbide inserts such as a carbide wire or a plurality of short carbide inserts are mounted to the outer diameter surface to reduce wear on both the screw flights and the inner surface of the extrusion barrel.
    Type: Application
    Filed: October 11, 2007
    Publication date: April 16, 2009
    Inventors: Josef Graetz, Frank Czerwinski
  • Patent number: 7390118
    Abstract: The present invention provides an improved extruder assembly, that includes a wiper for wiping a screw portion in a low pressure extruder stage, whereby the wiping of the screw portion improves melt conveyance through the low pressure extruder stage. The present invention has particular utility when used in a low pressure venting and entrainment extruder stage of a single screw compounding extruder. The present invention also provides an extrusion/injection unit for use in-line compounding molding system that incorporates the improved extruder assembly.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: June 24, 2008
    Assignee: Husky Injection Molding Systems Ltd.
    Inventors: Jeffrey D. MacDonald, Alireza Mortazavi, Denise Craig, Robert Ilmonen, Geoffrey Gow
  • Patent number: 7198748
    Abstract: The injection molding machine comprises a screw plunger (3), which rotates inside an injection unit (2), wherein the screw plunger (3) has, downstream from a metering zone a porous or permeable section (16) which can be charged with a physical expanding agent via an expanding agent feed device (18) in the screw shaft of the screw plunger (3) and which two-dimensionally introduces the expanding agent into the melt flow for molding of foamed shaped parts made of polymeric materials in an injection molding machine by an injection molding method.
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: April 3, 2007
    Assignee: Peguform GmbH
    Inventors: Sasan Habibi-Naini, Oliver Pfannschmidt, Christian Schlummer
  • Patent number: 7153120
    Abstract: A device to mix and extrude various ingredients including pastas, pastries, baked goods, hors d'oeuvres, and cookies. The device includes novel measuring, mixing and extrusion arrangements including: an automatic measuring cup; a way to continuously mix and extrude ingredients without intervening cleanings; a mixing and extrusion feed for handling different consistencies of ingredients; an integrated automatic cutter; motor cooling and extruded ingredient drying; as well as various safety devices.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: December 26, 2006
    Assignee: Ronco Marketing Corporation
    Inventors: Alan L. Backus, Ronald M. Popeil
  • Patent number: 7128858
    Abstract: A method for producing woody moldings and an apparatus for producing woody moldings that can reduce the number of processing steps and shorten the processing time. Cellulose based fine powdery particles and thermoplastic resin are kneaded and dissolved into a mixed material, and the mixed material is cooled and agitated into a powdery particulate solid. Then, the powdery particulate solid is molded into a predetermined shape.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: October 31, 2006
    Assignee: Misawa Homes Co., Ltd.
    Inventors: Daijirou Ozaki, Yutaka Suzuki, Masao Ooshiro
  • Patent number: 7104775
    Abstract: Disclosed is an injection unit having a rotatable device for preventing reverse flow. To connect first flow channels formed in a spacer and second flow channels formed in a screw head when the metering is performed, and prevent reverse flow of resin by cutting off the first flow channels and the second flow channels when the resin is injected, the injection unit has a torsion spring as spring means between a shaft of the screw head and a screw, thereby rapidly preventing movement of the melted resin by restoring force of the spring when the metering of the resin is finished.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: September 12, 2006
    Assignee: LG Cable Ltd.
    Inventors: Han Soo Jeon, Young Jin Park, Jin Young Kim, Dong Sung Kim, Sung Chul Shin, Kyoung Hun Han
  • Patent number: 7101165
    Abstract: An extrusion molding apparatus comprises a shaping die for producing a ceramic molded product, and a screw extruder having built therein an extruding screw (40) for mixing while leading a ceramic material forward. The extruding screw (40) includes a pressing screw portion (410) having a first lead (411) and a dispersing screw portion (420) having a second lead (421) adjacent to a forward end (412) of the pressing screw portion (410). The second lead (421) is formed in such a manner that the rear ends of all the second lead surfaces (426) at the rear end (422) of the dispersing screw portion (420) and the forward end of the first lead surface (416) at the forward end (412) of the pressing screw portion (410) are displaced from each other.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: September 5, 2006
    Assignee: Denso Corporation
    Inventors: Satoru Yamaguchi, Yasunao Miura, Hiromi Katou
  • Patent number: 7101166
    Abstract: The extruding apparatus has the molding die to form the ceramic molding, the screw extruder containing the extrusion screw to knead and guide the ceramic material toward the molding die. The extrusion screw is comprised of the pressure screw part and the diffusion screw part. The diffusion screw part provided at the front end of the extrusion screw has a diameter greater than the screw diameter of the pressure screw part.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: September 5, 2006
    Assignee: Denso Corporation
    Inventors: Satoru Yamaguchi, Yasunao Miura
  • Patent number: 7097442
    Abstract: An extruder capable of obtaining a treatment volume equal to that of the conventional art without enlarging a screw diameter is provided. The extruder includes screw shafts, a drive unit, and a barrel, in which three or more screw shafts having the same diameter and the same root diameter in a waveform shape are engaged with each other and arranged in parallel to each other horizontally or nearly horizontally, while a distance between axial centers is made equal. According to the above configuration, the same treatment volume as that of a conventional extruder can be handled by screw shafts of smaller diameter as compared with that of the conventional art. By using the screw shafts of the smaller diameter as compared with the conventional art, temperature irregularities of an extrusion material in screw grooves, leakage of the extrusion material from the screw shafts, an installation area of the extruder, and the like conventional trouble of various kinds can be eliminated.
    Type: Grant
    Filed: November 29, 2002
    Date of Patent: August 29, 2006
    Inventor: Kohei Sawa
  • Patent number: 7025491
    Abstract: An apparatus for homogenizing and/or dispersing at least one viscous substance and at least one solid and/or at least one other substance of different viscosity includes in a space in a housing axis-parallel rotatable shafts disposed along a circle with equal central-angle distance and provided with tightly intermeshing screw elements. The shafts in the area outside the openings in the housing are provided with screw elements having a pitch (S) of at most three quarters of the outside screw diameter (D) over a length (L=L1+L2+L3) corresponding to at least ten times the outside diameter (D) of the screw elements.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: April 11, 2006
    Assignee: 3+Extruder GmbH
    Inventors: Josef A. Blach, Markus Blach, Michael Blach
  • Patent number: 6958128
    Abstract: The present invention includes a screw tip for an extruder screw for effecting mixing in an extruder. The screw tip has a substantially conical outside surface and at least one discontinuous fin. The at least one fin protrudes from the outside surface of the screw tip.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: October 25, 2005
    Assignee: CertainTeed Corporation
    Inventors: Thomas A. Gates, James N. Valentine, David H. Steele, Steven H. Bowens
  • Patent number: 6957953
    Abstract: An extruder for extruding extrudate is provided and includes a generally cylindrical barrel portion having an end face. A screw conveyor is rotatably arranged coaxially within the barrel portion and has a downstream end. The screw conveyor has helical flights that define a first flow path with the barrel for the extrudate. The first flow path has a first cross-sectional area. An adapter is arranged on the end face of the barrel portion and defines an exit portion of the extruder. A screw tip is secured to the downstream end of the screw conveyor and extends into the adapter. The screw tip and the adapter define a second flow path for the extrudate with a second cross-section area being at least as large as the first cross-sectional area.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: October 25, 2005
    Assignee: Graham Packaging Company, L.P.
    Inventors: Earle L. Ellis, Roy N. Krohn, David A. Kesselman
  • Patent number: 6932591
    Abstract: The present invention is the apparatus and method for producing a plastic sheet having a pattern produced in a layer therein. The plastic sheet is a single layer sheet or a multi-layer sheet. The pattern is produced by mixing two or more plastic extrudants together in a mixer. The pattern is visible in the layer containing the two or more plastic extrudants because an at least one of the plastic extrudants is at least partially transparent. The mixer used to produce the pattern includes a housing having an end configured to expel the mixture of the two or more extrudants through a plurality of outlets. The mixer further comprises a rotatable shaft and at least one projection coupled to the shaft and rotatable with the shaft, the at least one projection configured to orient the mixture of the two or more extrudants relative to the plurality of outlets in the housing. The mixer further comprising a thrust bearing configured to couple an end of the shaft to the housing.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: August 23, 2005
    Assignee: Primex Plastics Corporation
    Inventor: Robert Cramer
  • Patent number: 6887062
    Abstract: A screw nose for a rubber extruder screw has an upstream portion of increasing diameter providing working engagement of the rubber flowing from the screw with the extruder barrel and a downstream portion of decreasing diameter providing working engagement of the rubber with a converging tapered wall of a flow channel block for reducing the shrinkage and pressure drop at the discharge end of the screw and thereby prevent porosity and blisters in an extruded rubber component.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: May 3, 2005
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Gary Robert Burg, Malcolm George Marshall
  • Patent number: 6863513
    Abstract: A continuous process provides a devolatilized liquid injection moldable silicone composition. In the process, a filler, treating agent and silicone polymer are introduced into an extruder having a length to diameter ratio of at least greater than 50. The filler, treating agent and silicone elastomer are continuously compounded in the extruder into a devolatilized liquid injection moldable silicone composition. A system for preparing a liquid silicone rubber composition comprises a mixer to prepare a concentrate of filler and silicone polymer, a long extruder having an L/D ratio of greater than 50, connected to the mixer to receive the concentrate from the mixer and to compound and devolatilize the concentrate, a treating agent and silicone polymer into a liquid silicone rubber composition containing volatiles and a cooler to receive the liquid silicone rubber composition to cool, homogenize and further devolatilized the composition.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: March 8, 2005
    Assignee: General Electric Company
    Inventors: Bruce Boudreau, Teresa Grocela-Rocha, Edward M. Jeram, August O. Liermann, Gerardo Rocha-Galicia, David A. Williams
  • Publication number: 20040253335
    Abstract: An injection molding screw for metal injection molding includes a first end, a second end, a longitudinal body with a first stage and a second stage extending axially along a length of the screw between the ends, a pressure retention device, and optionally, a screw tip. The pressure retention element minimizes loss of pressure in the second stage portion.
    Type: Application
    Filed: June 13, 2003
    Publication date: December 16, 2004
    Inventors: Glenn Anderson, Jingyi Xu
  • Publication number: 20040228937
    Abstract: Screw elements for twin-screw extruders are mounted on shafts which rotate in a same direction, with the screw elements having closely intermeshing outer contour for enabling a gentle incorporation of the fibers, in particular natural fibers in plastic melts and maintaining a longest possible fiber length. In the area of the surface of the screw elements, a plurality of surface structure elements are disposed which do not project beyond the outer contour of the screw element.
    Type: Application
    Filed: March 16, 2004
    Publication date: November 18, 2004
    Applicant: KRAUSS-MAFFEI KUNSTSTOFFTECHNIK GMBH
    Inventors: Joachim Ruch, Hans-Gerhard Fritz, Matthias Abendschein
  • Patent number: 6808380
    Abstract: An apparatus for manufacturing stiffness-taper tubing includes a die having an extrusion hole, a die holder for holding the die, and a mandrel mounted inside the die holder and that fits in the extrusion hole. The apparatus forms stiffness-taper tubing by switching between and supplying resins having different stiffnesses over the mandrel from a plurality of resin-supply ports formed in the die holder such that the stiffness gradually changes in the lengthwise direction. A mandrel insertion hole connecting to the extrusion hole is formed in the die holder and the mandrel is mounted in this mandrel insertion hole. The plurality of resin-supply ports open to a cylindrical space formed between the inner surface of the mandrel insertion hole and the outer surface of the mandrel at a position separated from the extrusion hole in the die, and the plurality of resins flow together in this space.
    Type: Grant
    Filed: January 2, 2002
    Date of Patent: October 26, 2004
    Assignee: GMA Co., Ltd.
    Inventors: Yukio Watanabe, Takeshi Kizuka
  • Publication number: 20040201118
    Abstract: A method and apparatus are disclosed for casting hollow-core concrete products, in which method concrete mix is fed into a mold of a delimited cross section traveling on a casting bed. According to the invention, the concrete mix is compacted with the help of vibratory shoes operating downstream of the concrete mix feed means, and the correct shape of the hollow-core cavities is maintained with the help of troweling mandrels.
    Type: Application
    Filed: February 4, 2004
    Publication date: October 14, 2004
    Inventors: Lassi Jarvinen, Aimo Seppanen
  • Publication number: 20040159971
    Abstract: The invention relates to a method and a an apparatus for processing various materials, the apparatus including at least two annular feed gaps placed one within the other. The beginning of each feed gap is provided with a grinding section (5), which is followed in the apparatus by a mixing section (10). The materials are processed in the grinding section (5), whereafter they are mixed in the mixing section (10), and the mixture is extruded into a product.
    Type: Application
    Filed: December 29, 2003
    Publication date: August 19, 2004
    Inventor: Kari Kirjavainen
  • Publication number: 20040155374
    Abstract: Preferred embodiments of the present invention comprise a method of manufacture utilizing significant amounts of R-PET and the preform and/or beverage bottle produced thereby. The method preferably comprises washing colored beverage bottles and substantially clear beverage bottles to remove any surface filth, forming colored R-PET flakes from the washed colored beverage bottles, and forming substantially clear R-PET flakes from the washed substantially clear beverage bottles. The colored R-PET flakes are preferably blended with the substantially clear R-PET flakes to form blended flakes having substantially homogenous color. The blended flakes are color corrected if so desired, and the blended flakes are then pelletized. The pelletized flakes are preferably combined with V-PET to form a preform which is then preferably shaped into a beverage bottle.
    Type: Application
    Filed: December 17, 2003
    Publication date: August 12, 2004
    Inventors: Peter Hutchinson, Mark Royall
  • Publication number: 20040108611
    Abstract: An apparatus for extruding plastic, including a plastic feed, an extruder, a colored liquid additive supply, a positive displacement metering pump, and a controller. The extruder has a housing receiving plastic from the plastic feed, a heat source, and a screw adapted to drive plastic through the housing The pump supplies colored liquid additive from the supply to the plastic in the phase change section of the extruder housing. The controller controls the drive rate of the screw and the pump to supply a selected volume of colored liquid additive per unit of time which is based on the drive rate of the screw. In use, the extruder is converted to adding a different color without cleaning the housing feeding section.
    Type: Application
    Filed: December 10, 2002
    Publication date: June 10, 2004
    Inventors: Michael D. Dennis, Joseph K. Koreck, Gayle L. Johnson, Mark A. Powell
  • Patent number: 6743007
    Abstract: A device to mix and extrude various ingredients including pastas, pastries, baked goods, hors d'oeuvres, and cookies. The device includes novel measuring, mixing and extrusion arrangements including: an automatic measuring cup; a way to continuously mix and extrude ingredients without intervening cleanings; a mixing and extrusion feed for handling different consistencies of ingredients; an integrated automatic cutter; motor cooling and extruded ingredient drying; as well as various safety devices.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: June 1, 2004
    Assignee: Advantage Partners IP, LLC
    Inventors: Alan L Backus, Ronald M. Popeil