With Specified Vent Means Patents (Class 366/75)
  • Patent number: 11752682
    Abstract: An extruder screw includes a screw main body, conveyance portions, barrier portions, and paths. The raw materials, the conveyance of which is limited by the barrier portions, flow in from the entrance. The raw materials flowing in from the entrance flow through the paths in an opposite direction to a conveyance direction of the conveyance portions. The exit is opened in the outer circumferential surface of the screw main body at a position on an upstream side in the conveyance direction in the conveyance portions in which the entrance is opened.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: September 12, 2023
    Assignees: Shibaura Machine Co., Ltd., HSP Technologies Inc.
    Inventors: Akiyoshi Kobayashi, Shigeyuki Fujii, Takafumi Sameshima, Hiroshi Shimizu
  • Patent number: 11141884
    Abstract: The measured value of a rubber temperature parameter that is related to the temperature of a rubber material to be kneaded by a mixing machine 2 and measured values of correlation parameters that have a correlation with a change in the value of the rubber temperature parameter are acquired. The measured values are assigned to an operational control parameter-calculation model equation, which is modified from a rubber temperature parameter-calculation model equation including operational control parameters and the correlation parameters, and a constant and coefficients of the operational control parameters and the correlation parameters are calculated using a machine learning algorithm.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: October 12, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES MACHINERY SYSTEMS, LTD.
    Inventors: Yoichi Matsushita, Ryota Soga, Shinichi Noguchi, Koji Shintani
  • Patent number: 11007700
    Abstract: According to the present invention, devolatilization of a synthetic resin formed from a polymer or synthetic rubber can be improved and the synthetic resin can be foamed at a low temperature by injecting a devolatilization agent through a devolatilization agent injection nozzle provided in a downstream end segment cylinder of a cylinder assembly. In a vented twin-screw kneading extrusion apparatus and extrusion method according to the present invention, a devolatilization agent, which is injected through a downstream end devolatilization agent injection nozzle provided on a downstream end segment cylinder constituted by a segment cylinder positioned on a downstream end of a cylinder assembly, is dispersed in molten resin in the downstream end segment cylinder and kneaded by a downstream end kneading portion such that the molten resin is foamed by the devolatilization agent and then extruded.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: May 18, 2021
    Assignee: THE JAPAN STEEL WORKS, LTD.
    Inventors: Yohei Shimizu, Jun Kakizaki, Kiyoshi Handa
  • Patent number: 10625459
    Abstract: According to the present invention, devolatilization of a synthetic resin formed from a polymer or synthetic rubber can be improved and the synthetic resin can be foamed at a low temperature by injecting a devolatilization agent through a devolatilization agent injection nozzle provided in a downstream end segment cylinder of a cylinder assembly. In a vented twin-screw kneading extrusion apparatus and extrusion method according to the present invention, a devolatilization agent, which is injected through a downstream end devolatilization agent injection nozzle (7c) provided on a downstream end segment cylinder constituted by a segment cylinder (1g) positioned on a downstream end of a cylinder assembly (1), is dispersed in molten resin in the downstream end segment cylinder (1g) and kneaded by a downstream end kneading portion (6c) such that the molten resin is foamed by the devolatilization agent and then extruded.
    Type: Grant
    Filed: August 18, 2014
    Date of Patent: April 21, 2020
    Assignee: THE JAPAN STEEL WORKS, LTD.
    Inventors: Yohei Shimizu, Jun Kakizaki, Kiyoshi Handa
  • Patent number: 10603831
    Abstract: A rubber extruding machine 1 comprises two or more rubber extruders 2, an extrusion head 3 to which the rubber extruders 2 are connected, and a decompression device 4. A pre-former 6 of the extrusion head comprises: rubber flow paths 20 including respective flow paths 22 through which the extruded unvulcanized rubber compounds G pass respectively; a merging position P at which the rubber flow paths 20 are confluent; and a vent channel 21 whose one end communicates with the merging position P and the other end is connected to the decompression device.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: March 31, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Shinichiro Honda
  • Patent number: 9662824
    Abstract: A process for producing a biopolymer nanoparticles product is disclosed. In this process, biopolymer feedstock and a plasticizer are fed to a feed zone of an extruder having a screw configuration in which the feedstock is process using shear forces in the extruder, and a crosslinking agent is added to the extruder downstream of the feed zone. The biopolymer feedstock and plasticizer are preferably added separately to the feed zone. The screw configuration may include two or more steam seal sections. Shear forces in a first section of the extruder may be greater than shear forces in an adjacent second section of the extruder downstream of the first section. In a post reaction section located after a point in which the crosslinking reaction has been completed, water may be added to improve die performance.
    Type: Grant
    Filed: August 14, 2007
    Date of Patent: May 30, 2017
    Assignee: EcoSynthetix Ltd.
    Inventors: Robert H. Wildi, Edward Van Egdom, Steven Bloembergen
  • Patent number: 9517575
    Abstract: An initial processing of natural raw rubber through an initial processing machine, comprising the steps of: (a) providing a coagulated latex which contains water and volatile compositions; (b) dewatering the coagulated latex through a screw-pressing process to remove free water; (c) forming a first pretreated latex material; (d) aging the first pretreated latex material through an aging process to remove water and volatile compositions; and (e) forming a final product of aged latex material. The screw-pressing process makes use of the temperature and pressure increase along the elongated channel structure. The aging process makes use of the further temperature and pressure increase of the rubber materials, together with the screwing effect of the screw-shaft component, the squeezing effect of the nozzle and additional heating at a particular location, which is around the mouthpiece of the nozzle to complete the aging process, which is energy saving, effective and efficient.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: December 13, 2016
    Assignee: U.S. NATURAL RUBBER TECHNOLOGIES, INC.
    Inventors: Lu Li, Xiaodong Liu
  • Patent number: 9278473
    Abstract: Embodiments of the present disclosure include an extruder screw, (200-1, 200-2) an extruder screw system (254) having a least one of a first extruder screw (200-1, 200-2) and at least one of a second extruder screw, (200-1, 200-2) an extruder system (250) having the extruder screw system (254), a continuous process for the production of an aqueous dispersion using the extruder system, and an aqueous dispersion formed by the process.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: March 8, 2016
    Assignee: Union Carbide Chemicals & Plastics Technology LLC
    Inventors: Anthony C. Neubauer, Neil W. Dunchus
  • Patent number: 9180618
    Abstract: An extruder is disclosed, and more particularly, a twin screw extruder for mixing, compounding, kneading and/or extruding of materials. The twin screw extruder includes a barrel assembly having a housing. The twin screw extruder further includes a first screw provided within the housing and comprising threads. The twin screw extruder further includes a second screw provided within the housing and comprising a threaded portion and a shaft portion devoid of threads. A drive system which drives the first screw and the second screw.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: November 10, 2015
    Assignee: KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY
    Inventor: Fares D. Alsewailem
  • Patent number: 9102091
    Abstract: An extruder is disclosed, and more particularly, a twin screw extruder for mixing, compounding, kneading and/or extruding of materials. The twin screw extruder includes a barrel assembly having a housing. The twin screw extruder further includes a first screw provided within the housing and comprising threads. The twin screw extruder further includes a second screw provided within the housing and comprising a threaded portion and a shaft portion devoid of threads. A drive system which drives the first screw and the second screw.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: August 11, 2015
    Assignee: KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY
    Inventor: Fares D. Alsewailem
  • Publication number: 20150103615
    Abstract: A kneading apparatus for a thermoplastic resin, includes: a plasticizing cylinder which has a high pressure kneading zone and a pressure reduction zone; a screw in the plasticizing cylinder; a downstream side seal mechanism which shuts off communication between the high pressure kneading zone and the pressure reduction zone; and a pressure reduction zone pressure adjusting mechanism which is connected to the pressure reduction zone and which controls a pressure of the pressure reduction zone so that the pressure is not less than an atmospheric pressure and the pressure is not more than a maximum pressure of the high pressure kneading zone that is achieved when kneading a molten resin with a pressurized fluid, when the downstream side seal mechanism shuts off the communication between the high pressure kneading zone and the pressure reduction zone.
    Type: Application
    Filed: December 16, 2014
    Publication date: April 16, 2015
    Inventors: Atsushi YUSA, Satoshi YAMAMOTO, Tetsuya ANO, Hironori OTA
  • Patent number: 8992067
    Abstract: An apparatus for the preparation of thermoplastic plastics material to be recycled has two treatment stages following one after the other. At least two receiving containers, which are capable of being evacuated and which are attached in parallel to a receiving container of the second stage, are present in the first stage. A device is present by which an alternating batch-wise charging of the receiving container of the second stage takes place from the receiving containers of the first stage. The said device controls discharge members of the receiving containers of the preceding stage, which leads into a channel. A shut-off member is provided for each receiving container of the preceding stage in the said channel. The alternating device controls the shut-off members. The method of preparing thermoplastic plastics material, to be recycled, utilizes an apparatus of this type.
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: March 31, 2015
    Assignee: EREMA Engineering Recycling Maschinen und Anlagen Gesellschaft m.b.H.
    Inventors: Helmut Bacher, Helmuth Schulz, Manfred Hackl
  • Patent number: 8992068
    Abstract: An extruder for feeding material and for removing gas from the fed material. The extruder includes a vent block positioned between a first and second auger. The vent block including a vent cavity having a feed end and an exit end, an inner feed ring that partially extends into said vent cavity at the feed end of the vent cavity, and a screw element rotatably positioned in the vent cavity. A front portion of the outer ring is longitudinally aligned with or overlapping the front end of the inner feed ring. The outer ring forms at least one gap or opening at or adjacent the feed end of the vent cavity to enable a vacuum to be pulled on the vent cavity as material is moved though the vent cavity from the feed end to the exit end by the screw element.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: March 31, 2015
    Assignee: The Bonnot Company
    Inventor: Kurt G. Houk
  • Patent number: 8960991
    Abstract: A device is provided with which it is possible to produce poly(methyl methacrylate) bone-cement paste, which is degassed to the greatest extent possible, while avoiding large-volume mixing containers and large cement volumes contained therein. The device includes a tubular hollow body (10) having a first opening (30) on the input side and a second opening (20) on the output side, at least one rotatably-mounted shaft (40) arranged in the axial direction in the tubular hollow body (10), thread turns (50) arranged axially along the outer side of the shaft (40), wherein the shaft (40) has at least one section with thread turns (50) whose pitch decreases in the direction of the second opening (20), at least one stirring blade (60) arranged on the shaft (40), and rigid mixing elements (70) arranged on the inner side of the tubular hollow body (10).
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: February 24, 2015
    Assignee: Heraeus Medical GmbH
    Inventors: Sebastian Vogt, Hubert Büchner
  • Publication number: 20150043300
    Abstract: A planetary roller extruder with planetary spindles and stop ring. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.
    Type: Application
    Filed: October 24, 2014
    Publication date: February 12, 2015
    Inventor: Harald RUST
  • Patent number: 8870441
    Abstract: An object of the invention is to improve capacity of process and not require a vent portion by an upper polygonal groove and a transition portion provided to a transport cylinder. A plastic extrusion method and apparatus according to the invention is a method and a configuration, in which an upper polygonal groove and a transition portion are integrally or separately provided to a transport cylinder so as to increase a frictional coefficient of an inner wall of the cylinder, to increase transport efficiency of a plastic raw material by a screw, and to allow at least gas, etc., pass toward a hopper side without using a vent portion.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: October 28, 2014
    Assignee: The Japan Steel Works, Ltd.
    Inventors: Kyohei Yata, Seiji Takamoto, Fumio Kobayashi, Shigeki Inoue
  • Patent number: 8672662
    Abstract: The invention relates to a device (1) for extruding thermoplastic material, having an extruder housing (22) in which an extruder screw (22) driven by a drive device (23) is supported rotatably about the axis thereof, said housing comprising an intake opening (24) to which a plastic material feeder (3) is connected, said feeder comprising at least one air inlet opening (36), wherein the extruder housing (22) comprises at least one vapor outlet opening (41) upstream of the intake opening (24) and an air/vapor path (28) is defined from the intake opening (24) to the vapor outlet opening (41).
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: March 18, 2014
    Assignee: Starlinger & Co Gesellschaft m.b.H.
    Inventors: Christian Lovranich, Johann Brandstaetter, Andreas Pechhacker
  • Publication number: 20140039142
    Abstract: The invention is directed to an extruder (10), particularly for extruding a synthetic rubber product, which comprises a barrel (24), one or several extruder elements (12, 14), particularly one or several extruder screws and/or a kneader elements (14), arranged inside the barrel (24) for conveying the product, optionally an inlet port for feeding a stripping agent into the barrel (24) and an outlet port for removing volatile compounds from the product and, where applicable, the stripping agent. According to the invention a perforated die plate (26) is fixed to the barrel (24) in flow direction before the outlet port. Since the die plate (26) is not fixed to the extruder elements (12, 14) but to the barrel (24) a circumferential clearance between the die plate (26) and the barrel (24) is prevented so that no extruded material is passing the die plate (26) radially outside.
    Type: Application
    Filed: July 22, 2011
    Publication date: February 6, 2014
    Applicant: LANXESS DEUTSCHLAND GMBH
    Inventors: Hanns-Ingolf Paul, Udo Wiesner, Jörg Kirchhoff, Thomas König, Klemens Kohlgrüber
  • Publication number: 20140010037
    Abstract: The present invention relates to an electrode paste manufacturing system that includes, a twin screw extrusion mixer, a mohno pump that is connected at an inlet thereof to an outlet of the twin screw extrusion mixer, a deaerating tank that is connected to an outlet of the mohno pump, and a vacuum pump that is connected at an inlet thereof to the deaerating tank. The vacuum pump is configured such that a conduit system on the deaerating tank side of an airtight line formed at a contact portion between a rotor and a stator of the mohno pump is a closed system with the airtight line being a boundary.
    Type: Application
    Filed: July 2, 2013
    Publication date: January 9, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masanori KITAYOSHI, Atsushi SUGIHARA
  • Patent number: 8585275
    Abstract: The invention relates to a vented extruder (1) for the devolatilization of a polymer material, encompassing at least one extruder barrel (2) with at least one rotatably driven extruder screw (3) mounted in the extruder barrel (2), and with at least one material feed and with at least one extrudate outlet, and also with at least one vent zone (9). A particular feature of the vented extruder (1) is that the gas output for the gas arising in the vent zone (9) has been provided upstream of the material feed, in relation to the direction of conveying of the polymer material.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: November 19, 2013
    Assignee: Evonik Roehm GmbH
    Inventors: Ruediger Carloff, Joachim Heid, Heinz Vetter
  • Patent number: 8562203
    Abstract: An extruder comprises a displacement part with a housing, inside of which at least one screw shaft is housed and which is provided, at one end, with a material entry opening for the material to be processed and, at the other end, with a material outlet opening for the processed material, and with an intermediate opening between the material entry opening and the material outlet opening for discharging gas from the displacement part. A material retaining device is connected to said intermediate opening and has at least one screw shaft inside an intermediate housing. This screw shaft extends from the intermediate opening to a gas discharge opening in the intermediate housing and conveys material entering the intermediate housing back into the displacement part.
    Type: Grant
    Filed: September 22, 2005
    Date of Patent: October 22, 2013
    Assignee: Blach Verwaltungs GmbH
    Inventor: Josef A. Blach
  • Patent number: 8534903
    Abstract: The invention relates to a vented extruder (1) for the devolatilization of a polymer material. The vented extruder (1) encompasses at least one drive (4), at least one gearbox (5), at least one rotatably driven extruder screw (3), at least one first material feed (6) and at least one extrudate outlet (13). A feature of the vented extruder (1) according to the invention is that the drive, encompassing drive (4) and gearbox (5), has been provided in the region of that end of the extruder screw (3) that is downstream in relation to the direction of conveying of the polymer.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: September 17, 2013
    Assignee: Evonik Röhm GmbH
    Inventors: Ruediger Carloff, Joachim Heid, Heinz Vetter
  • Publication number: 20130182528
    Abstract: A mixing device, for a mixable material, has at least one cartridge and a closure piece. The cartridge contains a first component of the mixable material and has a cartridge head in which at least one air opening is arranged, and the closure piece is arranged on the cartridge head in such a way that the at least one air opening in the cartridge head can be closed and opened by the closure piece. The closure piece is mounted so as to be rotatable or slideable relative to the cartridge head, and a connection extends through the cartridge head or a cartridge wall into the interior of the cartridge and connects the interior of the cartridge to a container for a second component of the mixable material.
    Type: Application
    Filed: August 10, 2011
    Publication date: July 18, 2013
    Applicant: HERAEUS MEDICAL GMBH
    Inventors: Sebastian Vogt, Hubert Buechner
  • Publication number: 20130135957
    Abstract: A device automatically mixes bone cement and has two separate plunger space sections with a gas feed and a gas outlet, which are separated from each other through a plunger. A blocking organ is provided in the plunger and can be switched at the turnaround points of the plunger path. Suitable connecting facilities connect the plunger to a mixing facility that is arranged in a mixing vessel. Alternating build-up of a pressure difference and pressure equalisation in both plunger space sections causes the plunger to move up and down. The plunger motion effects a simultaneous up-and-down motion and rotation of the mixing facility.
    Type: Application
    Filed: November 16, 2012
    Publication date: May 30, 2013
    Applicant: HERAEUS MEDICAL GMBH
    Inventor: HERAEUS MEDICAL GMBH
  • Publication number: 20130131303
    Abstract: Disclosed is a material for fiber manufacturing obtained by melt kneading while degassing a liquid crystal polyester satisfying the following requirements (a) and (b): (a) the flow starting temperature is equal to or greater than 280° C. and equal to or less than 360° C.; and (b) the melting viscosity measured at 360° C. with conditions of a nozzle pore diameter of 0.5 mm and a shear velocity of 1000 s?1 using a flow feature testing machine is equal to or less than 70 Pa·s.
    Type: Application
    Filed: November 19, 2012
    Publication date: May 23, 2013
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: SUMITOMO CHEMICAL COMPANY, LIMITED
  • Patent number: 8388216
    Abstract: A processing installation for devolatilization of polymer melts comprises a first extruder and a second extruder arranged downstream thereof in a direction of conveyance. The first extruder comprises several rotatably drivable first shafts which are provided with first treatment members and several devolatilization zones with associated devolatilization ports. Correspondingly, the second extruder comprises several rotatably drivable second shafts which are provided with second treatment members and several second devolatilization zones with associated devolatilization ports. The first treatment members have an external diameter which is smaller than or equal to that of the second treatment members. A devolatilization unit is arranged in a transfer zone which interconnects the extruders. The devolatilization unit comprises a perforated plate and a clearance arranged downstream in the direction of conveyance.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: March 5, 2013
    Assignee: Coperion GmbH
    Inventors: Frank Lechner, Ulrich Conrad
  • Patent number: 8360627
    Abstract: A screw machine for treating at least partially powdery bulk material has a housing with at least one housing bore and a screw arranged in the housing bore. A vacuum housing portion is provided, which is formed as a vacuum housing insert, which is releasably attached in the housing, in which a metal nonwoven is exchangeably held as a gas-permeable wall portion on a base body.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: January 29, 2013
    Assignee: Coperion GmbH
    Inventor: Thorsten Stirner
  • Patent number: 8303160
    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: Grant
    Filed: January 14, 2009
    Date of Patent: November 6, 2012
    Assignee: EREMA Engineering Recycling Maschinen und Anlagen Gesellschaft m.b.H.
    Inventor: Helmuth Schulz
  • Publication number: 20120250447
    Abstract: A clay mixing apparatus includes a mixing chamber, a rotor arranged within the mixing chamber, a drive unit arranged to rotate the rotor, an ejecting unit, a pressure reducing unit; and an exhaust flow path. The rotor includes a shaft rotated by the drive unit, an extruding member and a mixing member. The mixing member includes a plurality of arms and a plurality of blades arranged at tip ends of the arms. The exhaust opening is opposed, in a radial direction about the center axis, to a portion of the mixing member lying near the extruding member and/or a portion of the extruding member lying near the mixing member.
    Type: Application
    Filed: March 28, 2012
    Publication date: October 4, 2012
    Applicant: NIDEC-SHIMPO CORPORATION
    Inventors: Motoki KURIKI, Takeo TOKUDA, Masaya HIGASHITSUJI
  • Patent number: 8177412
    Abstract: A kneading apparatus includes a barrel having a cylindrical chamber; a screw assembly rotating in the chamber so that a material to be kneaded is extruded in the axial direction by the rotation, the screw assembly including a screw section having helical blades and a kneading blade section in order to allow the material to flow into the clearance between the inner wall of the chamber and the kneading blade section, and to apply shearing forces to the material; a metering feeder for feeding the material at a substantially constant volumetric or gravimetric rate into the chamber; an injecting device for injecting a heat-removing medium into the chamber; and a discharging device for separating the heat-removing medium from the material and discharging the heat-removing medium from the chamber. A kneading method using the kneading apparatus is also disclosed.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: May 15, 2012
    Assignee: Kobe Steel, Ltd.
    Inventors: Masao Murakami, Norifumi Yamada, Ko Takakura, Kimio Inoue
  • Publication number: 20120106288
    Abstract: Disclosed is a vacuum kneading and deaerating device capable of conducting an uniform and sufficient kneading treatment and a sufficient deaerating treatment with a high efficiency for a paste material contained in a cylindrical paste container.
    Type: Application
    Filed: June 1, 2011
    Publication date: May 3, 2012
    Inventor: Manabu Harada
  • Publication number: 20120081989
    Abstract: An object of the invention is to improve capacity of process and not require a vent portion by an upper polygonal groove and a transition portion provided to a transport cylinder. A plastic extrusion method and apparatus according to the invention is a method and a configuration, in which an upper polygonal groove and a transition portion are integrally or separately provided to a transport cylinder so as to increase a frictional coefficient of an inner wall of the cylinder, to increase transport efficiency of a plastic raw material by a screw, and to allow at least gas, etc., pass toward a hopper side without using a vent portion.
    Type: Application
    Filed: September 14, 2011
    Publication date: April 5, 2012
    Applicant: THE JAPAN STEEL WORKS, LTD.
    Inventors: Kyohei YATA, Seiji TAKAMOTO, Fumio KOBAYASHI, Shigeki INOUE
  • Patent number: 8087921
    Abstract: In one embodiment of the invention a mold system and method of use are provided such that aqueous starch-based compositions and baked goods articles that use the conversion of water to steam may be produced using an extruder that allows the venting of such gases and/or steam. The extruder is vented in such a way as to allow steam to escape, but retain the composition until the exit end.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: January 3, 2012
    Assignee: Biosphere Holdings Corporation
    Inventors: Elie Helou, Jr., David Dellinger
  • Publication number: 20110292755
    Abstract: A kneading apparatus includes a barrel having a cylindrical chamber; a screw assembly rotating in the chamber so that a material to be kneaded is extruded in the axial direction by the rotation, the screw assembly including a screw section having helical blades and a kneading blade section in order to allow the material to flow into the clearance between the inner wall of the chamber and the kneading blade section, and to apply shearing forces to the material; a metering feeder for feeding the material at a substantially constant volumetric or gravimetric rate into the chamber; an injecting device for injecting a heat-removing medium into the chamber; and a discharging device for separating the heat-removing medium from the material and discharging the heat-removing medium from the chamber. A kneading method using the kneading apparatus is also disclosed.
    Type: Application
    Filed: August 8, 2011
    Publication date: December 1, 2011
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Masao Murakami, Norifumi Yamada, Ko Takakura, Kimio Inoue
  • Publication number: 20110251368
    Abstract: The invention relates to an apparatus and a method for the processing of plastic material, with a receptacle or cutter-compactor (1) into which the material to be treated can be introduced, in the lower region of which a discharge opening (10) is provided, through which the processed material can be ejected from the receptacle (1), for example into an extruder (11). According to the invention, the receptacle (1) is divided into at least two chambers (6a, 6b, 6c, . . . ) separated from each other by an intermediate base (2?, 2?, . . . ), wherein at least one mixing or comminution tool (7a, 7b, 7c, . . . ) is arranged which acts upon the material in each chamber (6a, 6b, 6c, . . . ), with which the material can be converted into a softened but permanently lumpy or particle-shaped and not melted state and wherein means (5?, 5?, . . . ) are provided which effect or permit an exchange or a transfer of the softened, lumpy, not melted material between each directly adjacent chamber (6a, 6b, 6c, . . . ).
    Type: Application
    Filed: August 14, 2008
    Publication date: October 13, 2011
    Applicant: EREMA Engineering Recycling Maschinen und Anlagen Gesellschaft m.b.H.
    Inventors: Manfred Hackl, Gerhard Wendelin, Klaus Feichtinger
  • Publication number: 20110188336
    Abstract: The invention relates to a vented extruder (1) for the devolatilization of a polymer material. The vented extruder (1) encompasses at least one drive (4), at least one gearbox (5), at least one rotatably driven extruder screw (3), at least one first material feed (6) and at least one extrudate outlet (13). A feature of the vented extruder (1) according to the invention is that the drive, encompassing drive (4) and gearbox (5), has been provided in the region of that end of the extruder screw (3) that is downstream in relation to the direction of conveying of the polymer.
    Type: Application
    Filed: August 12, 2008
    Publication date: August 4, 2011
    Applicant: Evonik Roehm GmbH
    Inventors: Ruediger Carloff, Joachim Heid, Heinz Vetter
  • Publication number: 20110085407
    Abstract: The present invention provides a kneading device 1 including a hopper 2 having a hopper body 4 that stores raw powder, and a mixer 3 that kneads material to be kneaded, which contains the raw powder, wherein the hopper 2 includes a stirring device 5 that stirs the raw powder in the hopper body, and a temperature-controlled air supply device 6 that supplies temperature-controlled air into the hopper body 4. This kneading device can stably prepare high-quality kneaded dough.
    Type: Application
    Filed: June 1, 2009
    Publication date: April 14, 2011
    Inventors: Morihiro Matsuda, Shinsaku Kamimura
  • 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
  • Patent number: 7893307
    Abstract: Apparatus and process for producing hydrocarbon materials from a feed composition, the apparatus including a feed port; a viscous shear apparatus; a thermal decomposition assembly including a ribbonchannel reactor which includes an inner heated hollow cylinder; an outer heated hollow cylinder, one of which is rotatable with respect to the other, both heated hollow cylinders providing heat to the feed composition to convert it to a vapor fraction and a solid residue fraction; low height flighting mounted with respect to the inner and outer heated hollow cylinders to move the feed composition through the thermal decomposition assembly; at least one vapor port for removing the vapor fraction; and at least one solids port for removing the solid fraction.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: February 22, 2011
    Inventor: David G. Smith
  • 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: 20100284236
    Abstract: A mixing and kneading machine (1) for continual compounding comprises a screw shaft (3) rotating in a casing (2) and simultaneously moving axially translationally. To sustainably enhance the efficiency of the machine as regards its material thruput per unit of time the screw shaft (3) comprises at least four groups of radial screw vanes (4a, 4b, 4c, 4d) evenly distributed circumferentially, each group consisting of a plurality of screw vanes in axial sequence. The outer diameter (Da) of the screw shaft ranges from 400 to 800 millimeters. The rotary speed of the screw shaft (3) ranges from 30 to 80 rpm. A mixing and kneading machine (1) engineered as such is particularly suitable for compounding an anodic mass in the production of electrodes—anodes—for the aluminum industry.
    Type: Application
    Filed: May 10, 2010
    Publication date: November 11, 2010
    Applicant: BUSS AG
    Inventors: Peter Franz, Joel Stampfli, Hans-Ulrich Siegenthaler
  • 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
  • Publication number: 20100085831
    Abstract: The method of degassing is performed in a ring extruder wherein at least one process chamber is provided with at least one degassing opening. The radius R of the conveyor element in the degassing zone is smaller by ?R than the full radius Rv of the conveyor element required for the mutual stripping of adhering product in a closely intermeshing screw operation with adjacent conveyor elements.
    Type: Application
    Filed: December 7, 2009
    Publication date: April 8, 2010
    Inventors: Achim-Phillipp Sturm, Jürgen Schweikle, Andreas Christel, Federico Innerebner
  • Patent number: 7674413
    Abstract: A process for producing a cycloolefin resin composition comprising a cycloolefin resin and an additive by using a twin-screw extruder is provided, in which loss of the additive caused by volatilization through a vent during kneading is reduced and kneading of resin material with the additive can be sufficiently carried out. When the cycloolefin resin and the additive are kneaded by using a vented twin-screw extruder (10) to produce the cycloolefin resin composition containing the additive, an additive introduction opening (3) is disposed downstream of a vent (2) located nearest to a discharge opening (13) of the twin-screw extruder, and the additive is charged through the additive introduction opening located at a distance from the discharge opening of the twin-screw extruder in the range between longer than 10D and not longer than 30D.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: March 9, 2010
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Kimiyoshi Miura, Sadao Yoshimoto, Noboru Koga, Takeshi Suzuki, Atsushi Shibuya
  • Patent number: 7671125
    Abstract: A process for preparing organopolysiloxane compositions (A) having a viscosity measured at 25° C. of at least 500 Pa·s., wherein organopolysiloxanes (O) and fillers (F) are mixed and kneaded in a first process stage in a kneading cascade having at least two kneading chambers arranged in series adjacent one another, each containing kneading tools having parallel axes and capable of being driven in co-rotating or counter-rotating directions, the chambers connected to one another by means of openings through which material can pass in a direction transverse to the axes of the kneading tools, with the first kneading chamber having a feed opening and the last kneading chamber having a discharge opening, to give raw mixtures, and the raw mixtures are kneaded and degassed in a reciprocating kneader in a second process stage.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: March 2, 2010
    Assignee: Wacker-Chemie GmbH
    Inventors: Manfred Heisler, Johann Schuster, Alois Schlierf, Fridolin Stary
  • Publication number: 20100009779
    Abstract: A golf ball material composed of (A) an olefin-containing thermoplastic polymer having an acid content of at least 0.5 wt % but less than 5.0 wt %, (B) a resin composition which includes one or more selected from the group consisting of diene polymers, thermoplastic polymers and thermoset polymers, and (C) an oxygen-containing inorganic metal compound has a good thermal stability, flow and processability, making it suitable for injection molding. The golf ball material is ideal for the production of high-performance golf balls endowed with durability, scuff resistance and optimal hardness without a loss of rebound in the molded article.
    Type: Application
    Filed: July 15, 2009
    Publication date: January 14, 2010
    Applicant: BRIDGESTONE SPORTS, CO., LTD.
    Inventors: Yoshinori Egashira, Eiji Takehana
  • Patent number: 7607817
    Abstract: An extruder with a housing comprising parallel, partially inter-engaging bores and screws disposed therein is used when applying a method of feeding powdery bulk materials into such an extruder. A solid transport of powdery bulk material takes place in an inlet zone disposed downstream of a feed opening wherein said inlet zone is partially filled. The inlet zone is provided with at least one gas-permeable wall portion wherein a layer of bulk material is created on said wall portion, thereby preventing bulk material from passing through, The gas-permeable wall portion is connected to a vacuum source and to a pressure gas source. Furthermore, the gas-permeable wall portion has an inner wall which is set back with respect to the wall of the bores, thereby forming a gap with a partially annular cross section wherein a layer of the bulk material is formed in the gap.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: October 27, 2009
    Assignee: Coperion GmbH
    Inventors: Hans-Joachim Sämann, Werner Wiedmann, Jürgen Strecker, Peter Heidemeyer, Sören Welb
  • Publication number: 20090238028
    Abstract: A method for producing composite materials, such as thermoplastic resins with mineral and/or vegetable fillers, consisting in feeding a mineral and/or vegetable filler, preheating the filler, feeding a melted thermoplastic resin onto the filler, introducing the mixture of the filler and the thermoplastic resin in an extruder, subjecting the mixture to high compression, producing a high partial vacuum, and compressing the mixture in an extrusion head, out of which the material to be subjected to subsequent treatments flows.
    Type: Application
    Filed: May 27, 2009
    Publication date: September 24, 2009
    Inventor: Massimo DE MARIA
  • Publication number: 20090087661
    Abstract: Plastic composite material made up of a polymer matrix with a concentration of a nanofiber material and with a concentration of graphite-based particles. The matrix additionally contains at least one inorganic filler in the form of silicate-based particles or in the form of glass particles.
    Type: Application
    Filed: September 24, 2008
    Publication date: April 2, 2009
    Inventor: Andreas Eder
  • Patent number: RE44826
    Abstract: A screw extruder mechanism for the processing of strongly outgassing materials comprises a main extruder for proper material processing, a material feed and discharge device and a degassing device on the main extruder for the discharge of the gas stream from the portion of evaporation. For the gas stream to branch into at least three separate streams, the degassing device comprises a first degassing port and at least two degassing elements which are opposed radially to each other in relation to the main extruder and are disposed between the portion of evaporation and the first degassing port and which are designed preferably as ancillary screw extruders opening radially into the main extruder.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: April 8, 2014
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Erwin Häring, Jan Keulen, Horst Eggerl