Plural Screws, Plural Extruders, Or Plural Stage Extruder Patents (Class 264/211.23)
  • Patent number: 11478969
    Abstract: A method for producing a foam-molded product uses a producing apparatus including a plasticizing cylinder. The plasticizing cylinder has a plasticization zone, a starvation zone, and an introducing port which is formed in the plasticizing cylinder and via which a physical foaming agent is introduced into the starvation zone. The method includes: plasticizing and melting a thermoplastic resin into a molten resin in the plasticization zone; introducing a pressurized fluid containing the physical foaming agent having a fixed pressure into the starvation zone; allowing the molten resin to be in the starved state in the starvation zone; bringing the molten resin in the starved state into contact with the pressurized fluid having the fixed pressure in the starvation zone; and molding the molten resin into the foam-molded product. At least one pressure boosting part is provided in the starvation zone.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: October 25, 2022
    Assignee: MAXELL, LTD.
    Inventors: Atsushi Yusa, Satoshi Yamamoto, Hideto Goto
  • Patent number: 11319384
    Abstract: There is provided a method for producing hypromellose phthalate (HPMCP), the method not requiring any special device, and facilitating removal of impurities. More specifically, there is provided a method for producing HPMCP, including an esterification step of esterifying hypromellose with a carboxybenzoylating agent in the presence of an aliphatic carboxylic acid to obtain a reaction product solution containing HPMCP; a precipitation step of precipitating the HPMCP by mixing the reaction product solution with water to obtain a suspension of the precipitated HPMCP; a neutralization step of neutralizing the suspension with a basic substance to obtain a neutralized suspension; and a washing step of washing the HPMCP contained in the neutralized suspension to obtain the washed HPMCP.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: May 3, 2022
    Inventors: Akiko Tsuchida, Taishi Kitaguchi, Akira Kitamura, Mitsuo Narita
  • Patent number: 11279060
    Abstract: An extrusion apparatus intended for the manufacture of a coextruded profiled element P for tyres, produced from rubber compounds of various compositions, comprises a profiling device (30) arranged at the outlet of at least two flow channels (34, 35) for rubbery compounds of different composition. The said channels receive the compounds from positive-displacement contrarotating twin-screw extruders (10, 20), the screw flights interpenetrating and having conjugated profiles.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: March 22, 2022
    Assignee: Compagnie Generale des Etablissements Michelin
    Inventors: Christophe Ougier, Arnaud Letocart
  • Patent number: 10731081
    Abstract: Apparatus and method for pyrolyzing hydro carbonaceous materials to produce useful vapor and solid products comprising a generally cylindrical, linear reactor having a screw means for transporting hydro carbonaceous materials through said reactor, means for feeding and heating said hydro carbonaceous materials whereby they are processed and pyrolyzed to produce vapor and solid products; means for removing vapor products from said processed hydro carbonaceous materials, means for removing solid products, means whereby said hydrocarbonaceous material is maintained within a zone for a range of defined residence times, means for rotating said screw, which has a plurality of flight configurations for compressing, and for melting said hydro carbonaceous materials to convert them from a solid to a liquid, for mixing, destabilizing and dehalogenating said hydro carbonaceous materials, for pyrolyzing said hydro carbonaceous materials, for devolatilizing the pyrolyzed hydrocarbonaceous materials, and for discharging so
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: August 4, 2020
    Assignee: VADXX ENERGY LLC
    Inventor: William L. Ullom
  • Patent number: 10427326
    Abstract: A method and system for optimizing a match between the color of an in-line part manufactured by a plastic product production machine and the color of a reference part by adjusting the concentration of masterbatch in the mixture of raw material fed to the plastic product production machine. The optimization of the color is based on spectra of the in-line part and reference part obtained within a short time interval using the same spectrometer, thereby eliminating the requirement for high accuracy spectrometer calibration and allowing the method, which determines the rates at which the base masterbatches are added to the raw material, to be carried out in real time on the manufacturing floor while the plastic product production machine is being operated to manufacture in-line parts.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: October 1, 2019
    Assignee: O.E.D.A. LIAD HOLDINGS (2006) LTD.
    Inventors: Vadim (Dan) Regelman, Eli Margalit, Daniel Hofmann, Ofer Jacobovich, Aviad Adani
  • Patent number: 10427325
    Abstract: A twin screw extruder (10) according to the present invention is a twin screw extruder (10), in which a reinforcing fiber is fed through an input port (18) into a molten thermoplastic resin having been formed in a resin feed part (13) and the reinforcing fiber and the molten thermoplastic resin pass through a kneading part (15) so that a fiber-reinforced resin composition is manufactured, wherein the kneading part (15) is provided at the discharge-side end part of the extruder (10); a conveying part (14) is provided between the input port (18) and the kneading part (15), and tip clearance (Sc) of a screw element (12b) configuring the conveying part (14) is larger than screw clearance (Ss).
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: October 1, 2019
    Inventors: Daigo Saga, Jun Kakizaki, Toshifumi Ohashi
  • Patent number: 10421911
    Abstract: An apparatus for continuous conversion of hydro carbonaceous materials to condensable, non-condensable and solid hydrocarbon products, comprising at least one extruder capable of providing shear force and heat and having three or more treatment zones, a continuous process thermal kiln reactor, said extruder and said kiln reactor being in fluid communication, means for transporting hydro carbonaceous materials through the apparatus, and between said extruder and said kiln reactor, means for feeding said hydrocarbonaceous materials to the apparatus, means for heating said hydrocarbonaceous materials, means for removing vapor products from said apparatus, means for removing solid products from said apparatus, and means whereby said hydrocarbonaceous materials are maintained within the zones for a range of defined temperature and residence times, wherein said extruder has at least three zones, and said kiln reactor comprises at least two zones, whereby said hydrocarbonaceous material is subjected to a plurality o
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: September 24, 2019
    Assignee: VADXX ENERGY LLC
    Inventor: William Ullom
  • Patent number: 10259022
    Abstract: An infectious waste treatment system and method for decontaminating infectious waste employ a thermal friction extruder in which first and second interleaved counter-rotatable augers include reverse pitch flight sections that urge waste material in a direction opposite to that of the flow stream and into engagement with the back sides of friction plates. This increases the amount of heat generated by the extruder. The reverse pitch flight sections can be selectively replaced with forward pitch flight sections to control the amount of heat imparted to the waste material by the friction plates.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: April 16, 2019
    Inventor: John R Self
  • Patent number: 9987784
    Abstract: A thermoplastic elastomer tube can include a thermoplastic elastomer component disposed within a matrix. In an embodiment, the thermoplastic elastomer component is disposed within the matrix in a thermoplastic elastomer phase having a number of domains. At least approximately 50% of the domains of the thermoplastic elastomer component have an aspect ratio of no greater than approximately 1.5. In a particular embodiment, the thermoplastic elastomer tube comprises at least approximately 20 wt % of the thermoplastic elastomer component and no greater than approximately 50 wt % of a polyolefin component. In some embodiments, the thermoplastic elastomer component includes styrene.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: June 5, 2018
    Inventors: Sridhar Krishnamurthi Siddhamalli, Mark W. Simon, Steven Schrader, Todd E. Kundinger
  • Patent number: 9017587
    Abstract: A manufacturing method of biodegradable net-shaped articles includes: (a) preparing a biodegradable mixture; (b) granulating the mixture into plastic grains; (c) baking the plastic grains in an oven at 60° C. to 70° C. for 3 to 4 hours; (d) melting and extruding the plastic grains by a screw-type extruder so as to obtain a net-shaped preform; and (e) cooling and thereby finalizing the net-shaped preform in a cooling bath at 15° C. to 30° C. so as to obtain the net-shaped article.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: April 28, 2015
    Assignee: Minima Technology Co., Ltd.
    Inventors: Yu-Kai Huang, Chien-Ming Huang
  • Patent number: 9011741
    Abstract: In a process for producing a biopolymer nanoparticles, biopolymer feedstock and a plasticizer are fed to a feed zone of an extruder and the biopolymer feedstock is processed using shear forces. A crosslinking agent is added to the extruder downstream of the feed zone. The process has a production rate of at least 1.0 metric tons per hour. The feedstock and the plasticizer are preferably added separately to the feed zone. The extruder may have single flight elements in the feed zone. The temperatures in the intermediate section of the extruder are preferably kept above 100 C. 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 downstream section of the first section. In a post reaction section, water may be added to improve die performance.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: April 21, 2015
    Assignee: EcoSynthetix Ltd.
    Inventors: Robert H. Wildi, Edward Van Egdom, Steven Bloembergen
  • Patent number: 8968615
    Abstract: A bulk of polyester polymer particles comprising polyester polymer comprising greater than 75% virgin polyester polymer, the particles having: A) an It.V. of at least 0.72 dl/g, and B) 10 ppm or less of residual acetaldehyde; and C) at least two melting peaks, wherein one of said at least two melting peaks is a low peak melting point within a range of 140° C. to 220° C. and having a melting endotherm area of at least the absolute value of 1 J/g. The particles may also have a degree of crystallinity within a range of 20% and a maximum degree of crystallinity Tcmax defined by the equation: Tcmax=50%?CA?OH where CA is the total mole % of all carboxylic acid residues other than terephthalic acid residues, based on 100 mole % of carboxylic acid residues, and OH is the total mole % of all hydroxyl functional compound residues other than ethylene glycol residues, based on 100 mole % of hydroxyl functional compounds residues.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: March 3, 2015
    Assignee: Eastman Chemical Company
    Inventors: Michael Paul Ekart, Frederick Leslie Colhoun, Mary Therese Jernigan, Stephen Weinhold, Rodney Scott Armentrout
  • Patent number: 8946375
    Abstract: A method for making over-indexed thermoplastic polyurethane elastomer precursor. The precursor may be cross-linked.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: February 3, 2015
    Assignee: NIKE, Inc.
    Inventors: Yasushi Ichikawa, Thomas J. Kennedy, III, Chien-Hsin Chou, Hui-Kai Liao
  • Patent number: 8920695
    Abstract: A method of producing a liquid crystal polyester composition, the twin-screw extruder including a cylinder having a supply port for supplying the liquid crystal polyester, a first addition port for adding the filler other than fibrous fillers and a second addition port for adding a fibrous filler which are provided downstream of the supply port, and a screw provided with kneading portions on the upstream side and downstream side of the first addition port, a resin temperature (T1) of the liquid crystal polyester after kneading in the nearest upstream kneading portion satisfying formula (1), and a resin temperature (T2) of the liquid crystal polyester after kneading in the nearest downstream kneading portion satisfying formula (2): FT?100(° C.)?T1?FT+20(° C.)??(1) FT?100(° C.)?T2?FT+30(° C.)??(2) wherein FT represents the flow starting temperature of the liquid crystal polyester.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: December 30, 2014
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Mitsuo Maeda, Yasuo Matsumi
  • Patent number: 8906278
    Abstract: Processes for producing carbon fiber, the filament thereof and pre-oxidized fiber are provided. In one embodiment, the gel spinning of polyacrylonitrile filament is achieved by using small-molecule gelling agent, and the carbon fiber obtained thereby is increased by 15% to 40% in tensile strength and by 20% to 35% in toughness. In another embodiment, the melt spinning process of polyacrylonitrile is conducted by using imidazole type ion liquid as plasticizer, the process reduces environment pollution, is suitable for industrial production and the fiber produced thereby is improved in its strength. In yet another embodiment, polyacrylonitrile pre-oxidized fiber is produced by melt spinning, so low cost and controllable pre-oxidization of polyacrylonitrile can be achieved. In a further embodiment, high strength carbon fiber is manufactured by using polymer thickening agent.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: December 9, 2014
    Assignee: Donghua University
    Inventors: Muhuo Yu, Huaiping Rong, Keqing Han, Zhaohua Wang, Yiwei Zhang, Yincai Tian, Qinli Dong, Xi Zhao, Hui Zhang
  • Patent number: 8876511
    Abstract: A system for kneading and extruding a material includes a crusher for crushing the material into coarse particles, an extruder for conveying and extruding the material crushed by the crusher, a gear pump for receiving and discharging the material extruded from the extruder, and a kneading and extruding apparatus for kneading the material discharged from the gear pump and continuously extruding the kneaded material. Therefore, a material is accurately quantified and highly uniform, resulting in reduced product variations and ensured consistent quality.
    Type: Grant
    Filed: July 6, 2004
    Date of Patent: November 4, 2014
    Assignee: Kobe Steel, Ltd.
    Inventors: Yasuaki Yamane, Hideo Funahashi, Koichi Miyake
  • Patent number: 8877105
    Abstract: A process for manufacturing an elastomeric tire component includes the steps of a) preparing an elongated element including a cross-linkable elastomeric material by feeding it to an extruding device having a plurality of units, each having a respective thermal inertia, and b) delivering the elongated element onto a building support, and further includes at least one non-productive step of c) submitting at least one of the units of the extruding device to a thermal transition selected from heating or cooling, substantially reducing the risk of scorching during the thermal transition from and to the non-productive step ranking the units according to their thermal inertia and heating the units starting with the top-ranked unit sequentially to the bottom-ranked unit to reach the respective working temperature or cooling the units starting from the maximum working temperature unit sequentially to the minimum working temperature unit to reach the respective non-working temperature.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: November 4, 2014
    Assignee: Pirelli Tyre S.p.A.
    Inventors: Francesco D'Oria, Enrico Sabbatani, Maurizio Marchini
  • Patent number: 8865041
    Abstract: Process for extrusion of polymer by feeding a polymer feedstock to the feed port of an extruder having (i) two or more barrel sections arranged sequentially from (a) an upstream feed barrel section to which polymer feedstock to be extruded is fed, the upstream feed barrel section containing two screws each having a diameter of X, to (b) a downstream barrel section from which melted polymer is passed to a die and extruded, and (ii) a feed port for feeding polymer feedstock to be extruded into the extruder at its upstream end. The polymer feedstock is in the form of a powder, and the feed port area is a rectangular shape with width limited by the width of the upstream feed barrel section to 2*X and with a length greater than 2.5*X. The total area of the feed ports through which polymer feedstock is introduced is greater than 5*X2.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: October 21, 2014
    Assignee: Ineos Sales (UK) Limited
    Inventor: Gary Lindsay Pitman
  • Patent number: 8858852
    Abstract: A compound plant for processing elastomeric compounds for tires with both a high quality and a high throughput includes at least one batch mixing device in combination with at least one multi-shaft continuous mixing device having a high number of shafts. For example, the multi-shaft continuous mixing device could be a ring extruder having a plurality of co-rotating screws disposed to form a ring. In operation, a first elastomeric compound is discharged from the at least one batch mixing device and processed with the at least one multi-shaft continuous mixing device to obtain a second elastomeric compound.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: October 14, 2014
    Assignee: Pirelli Tyre S.p.A.
    Inventors: Stefano Testi, Alan Bottomley, Alessio Longoni
  • Patent number: 8834971
    Abstract: Process for the continuous preparation of prepolymers based on phenolic resin, an oxazoline component and an epoxide in the presence of a catalyst, including supplying the phenolic resin and the oxazoline component to an extruder in a stream A; a Lewis adduct of boron trifluoride or of aluminum trichloride, or arylsulphonic acids or alkylsulphonic acids, or latent arylsulphonic acids or latent alkylsulphonic acids, in a stream B, and the epoxide in a stream C, the infeed of stream A being situated, as seen in extrusion direction, before the infeed of stream C, these reactants are mixed at a reaction temperature of 120 to 200° C. with a residence time in the extruder of 3 seconds to 15 minutes, and then the product discharge of the extruder is cooled to a temperature of less than 45° C. within from 30 to 60 seconds.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: September 16, 2014
    Assignee: Evonik Degussa GmbH
    Inventors: Marianne Omeis, Franz-Albert von Itter, Thomas Weihrauch
  • Patent number: 8815135
    Abstract: A high-throughput process for the manufacture of absorbent unexpanded glass-like polysaccharides is disclosed. The process comprises the use of a twin screw extruder having turbulence and kneading sections, the kneading sections being located downstream from the turbulence sections.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: August 26, 2014
    Assignee: Archer Daniels Midland Company
    Inventors: Edward Beecher, Isabelle Bolduc, Ralph Cutillo, Shuojia Dong
  • Patent number: 8808605
    Abstract: The present invention provides a carbon fiber composite material comprising an elastomer and a carbon nanofiber dispersed in the elastomer, wherein the elastomer has an unsaturated bond or a group, having affinity to the carbon nanofiber. Also disclosed is a process for producing the carbon fiber composite material.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: August 19, 2014
    Assignee: Nissin Kogyo Co., Ltd.
    Inventors: Toru Noguchi, Shigeru Fukazawa, Shuichi Shimizu
  • Patent number: 8790554
    Abstract: A method of preparing meta-aramid fibers includes the operations of polymerization, neutralization and spinning using m-phenylenediamine and isophthaloyl chloride as raw materials, wherein the neutralizing agent is added in an amount that is sufficient only for neutralizing a part of hydrogen chloride, so that the resultant spin dope of polyisophthaloyl metaphenylene diamine contains salts produced by the neutralization reaction and a part of unneutralized hydrogen chloride. The method of the invention has a short production line with reduced amount of the neutralizing agent, therefore both the costs of raw materials and the production energy consumption are saved. The fibers prepared according to the method of the invention have reduced gray scale to improve the electrical insulation properties of the fibers.
    Type: Grant
    Filed: September 5, 2011
    Date of Patent: July 29, 2014
    Inventor: Zhou Zhong
  • Patent number: 8784711
    Abstract: The invention relates to a process for preparing a reinforced and reactive thermoplastic composition having a continuous phase which is based on at least one thermoplastic polymer and dispersed in which is a discontinuous phase based on at least one reactive reinforcing agent that may be immiscible with said at least one thermoplastic polymer, and also to a composition obtained by this process.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: July 22, 2014
    Assignee: Hutchinson
    Inventors: Nicolas Garois, Philippe Sonntag, Grégory Martin, Matthieu Vatan, Jacques Drouvroy
  • Publication number: 20140197566
    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: Application
    Filed: March 14, 2014
    Publication date: July 17, 2014
    Applicant: King Abdulaziz City for Science and Technology
    Inventor: Fares D. ALSEWAILEM
  • Patent number: 8734609
    Abstract: A process for continuous manufacturing of moisture-curable polyurethane formulations used as sealants and adhesives. The process is characterized by the fact that the reactive components are introduced independently, and without the need for a prepolymer, to a mixer. Solid or liquid raw materials can be either pre-blended or fed directly to the mixer, a twin-screw extruder, which provides the requisite energy to homogenously mix the raw materials and drive the chemical reaction. The process is designed so that the extruder barrel and screw allow variable feed addition and heat exchange down the length of the machine. This allows various operations to be performed at different points in the extruder, including reaction, dispersive mixing, distributive mixing and devolitization.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: May 27, 2014
    Assignee: Bostik, Inc.
    Inventor: Sean G. Duffy
  • Patent number: 8703029
    Abstract: A method is provided for obtaining a polyarylene sulfide resin composition with a low chlorine content, which has high fluidity and high quality and produces less burrs. Specifically, a method is provided wherein a polyarylene sulfide resin composition is produced by melting and mixing (A) a polyarylene sulfide resin, (B) an inorganic filler, and (C) an alkoxysilane compound. In this method, (A) a polyarylene sulfide resin having a melt viscosity of 80-400 Pa·s (at a temperature of 310° C. and a shear rate of 1200/sec) and a chlorine content of 1000-2000 ppm is supplied from a raw material feed port of a specific extruder, and then extruded at two kneading parts within the range of [shear rate (1/sec)×kneading time (sec)=1600-6000], thereby producing a polyarylene sulfide resin composition having a melt viscosity of 150-330 Pa·s (at a temperature of 310° C. and a shear rate of 1200/sec) and a chlorine content of not more than 950 ppm.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: April 22, 2014
    Assignee: Polyplastics Co., Ltd.
    Inventors: Kazunari Takada, Raita Nishikawa, Katsuhei Ohnishi
  • Patent number: 8636931
    Abstract: A method of manufacturing a thermal paste, in which the method includes feeding the thermal paste into a chamber of an extruder; mixing the thermal paste at elevated temperatures; de-airing the thermal paste; and extruding the thermal paste out of the chamber through a die as a pre-form or into a cartridge, such that air channels and pseudo-grain boundaries are prevented from forming in the thermal paste.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: January 28, 2014
    Assignee: International Business Machines Corporation
    Inventors: Claudius Feger, Ijeoma M. Nnebe, Maurice McGlashan-Powell
  • Patent number: 8632649
    Abstract: An object is to reduce a cycle time for fabricating a low rolling resistance pneumatic tire and to provide the same pneumatic tire. As a means therefor, in building a tread portion by winding spirally a rubber strip material whose cross section is divided into a first region made of a conductive rubber and a second region made of a non-conductive rubber in a tire circumferential direction in a partially overlapping fashion by the use of an extruding machine which extrudes continuously the rubber strip material, an area ratio of the first region relative to the cross section of the rubber strip material is made to change in a tire width direction.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: January 21, 2014
    Assignee: Toyo Tire & Rubber Co., Ltd.
    Inventors: Mitsuru Hitotsuyanagi, Tetsuo Tatara, Shigeo Kudo, Osamu Fujiki
  • Patent number: 8623245
    Abstract: A colored high strength polyethylene fiber, preparation method and use thereof are provided, which are in the high molecular material field. The surface of said high strength polyethylene fiber is chromatic, grey or black. The strength of said high strength polyethylene fiber is 15-50 g/d, its modulus is 400-2000 g/d. The product of the present invention is colored, so it can be well applied to civil and military field. The preparation method of present invention has some advantages that technological process is simple, production efficiency is high, cost of production is low, performance of made fiber is excellent, and use-cost is reduced, compared with the prior art.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: January 7, 2014
    Assignee: Shandong ICD High Performance Fibres Co., Ltd.
    Inventor: Yi Ren
  • Patent number: 8597553
    Abstract: A method of manufacturing bulked continuous carpet filament which, in various embodiments, comprises: (A) grinding recycled PET bottles into a group of flakes; (B) washing the flakes; (C) identifying and removing impurities, including impure flakes, from the group of flakes; (D) passing the group of flakes through an MRS extruder while maintaining the pressure within the MRS portion of the MRS extruder below about 1.5 millibars; (E) passing the resulting polymer melt through at least one filter having a micron rating of less than about 50 microns; and (F) forming the recycled polymer into bulked continuous carpet filament that consists essentially of recycled PET.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: December 3, 2013
    Assignee: Mohawk Industries, Inc.
    Inventor: Thomas Clark
  • Publication number: 20130285279
    Abstract: An extruder is disclosed, and more particularly, to an integrated single screw extruder and a twin screw extruder for mixing, compounding, kneading and/or extruding of materials. The integrated extruder includes a first barrel assembly and a second barrel assembly. The integrated extruder further includes a first screw having a first threaded portion and a second threaded portion. The first threaded portion is housed within the first barrel assembly and is configured to provide upstream material processing. The second threaded portion is housed within the second barrel assembly and is configured to provide downstream material processing. The integrated extruder further includes a second screw having a non-threaded shaft portion and a threaded portion. The threaded portion of the second screw is housed within the second barrel assembly and is configured to provide the downstream material processing with the second threaded portion of the first screw.
    Type: Application
    Filed: April 27, 2012
    Publication date: October 31, 2013
    Inventor: Fares D. Alsewailem
  • Publication number: 20130224486
    Abstract: The invention provides systems and methods for preparing a plastic containing feedstream for conversion to valuable carbon-containing products such as synthetic crude oil. In some systems and methods, the plastic material is prepared from carpet scrap.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 29, 2013
    Inventor: Community Energy Systems
  • Publication number: 20130207291
    Abstract: A method and a device to fabricate a composite product, where an intermediate product is formed from raw material including fibre containing material and polymer based material with the help of extrusion and a composite product is shaped from the intermediate product with at least one shaping tool wherein the cross sectional profile of the intermediate product is shaped with at least one extrusion tool during the extrusion and the temperature of the intermediate product is controlled after the extrusion tool so that in different parts of the cross sectional profile of the intermediate product different temperature zones are arranged according to the predetermined target values of the temperature ranges.
    Type: Application
    Filed: April 7, 2011
    Publication date: August 15, 2013
    Inventors: Juha Varis, Timo Kärki
  • Patent number: 8460590
    Abstract: A process for continuously producing an elastomeric composition includes providing at least one extruder, metering and feeding at least one elastomer, at least one filler, and ingredients different from elastomers and fillers into the at least one extruder, mixing and dispersing the at least one filler and the ingredients different from elastomers and fillers into the at least one elastomer using the at least one extruder, and extruding a resulting elastomeric composition. The at least one extruder includes the housing and at least one screw rotatably mounted in the housing. The housing includes at least one feed opening and a discharge opening. At least one of the ingredients different from elastomers and fillers includes a subdivided product including one or more minor ingredients dispersed in at least one thermoplastic binding agent. An apparatus for continuously producing the elastomeric composition is also disclosed.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: June 11, 2013
    Assignee: Pirelli Pneumatici S.p.A.
    Inventors: Renato Caretta, Maurizio Galimberti, Cesare Amurri, Cristiano Puppi, Giuseppe Ducoli, Enrico Albizzati
  • Publication number: 20130093114
    Abstract: A blend of plastics with wood particles.
    Type: Application
    Filed: October 1, 2012
    Publication date: April 18, 2013
    Inventors: Harald RUST, Holger SASSE
  • Patent number: 8293158
    Abstract: According to the invention blends of wood particles and plant particles and plastic are generated in an extruder thereby that the plastic is converted separately into a liquid melt before the joining takes place.
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: October 23, 2012
    Assignees: Entex Rust & Mitschke GmbH, Novo-Tech GmbH & Co. KG
    Inventors: Harald Rust, Holger Sasse
  • Patent number: 8288456
    Abstract: The present invention relates to a process for the production of impact-modified filled polycarbonate compositions and molding compositions. A process of the present invention involves: (i) mixing the CNT (component C) with rubber-containing vinyl copolymer (component B) and/or rubber-free vinyl copolymer (component D) on a twin screw extruder, to obtain a CNT masterbatch, (ii) mixing the CNT masterbatch with polycarbonate (component A) and optionally with Component B and/or Component D and optionally with an additive on a twin screw extruder. A polycarbonate composition prepared according to the present invention does not experience degradation of the molecular weight of the polycarbonate during compounding a compared to processes known in the art.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: October 16, 2012
    Assignee: Bayer Materialscience AG
    Inventors: Achim Feldermann, Andreas Seidel, Michael Bierdel, Reiner Rudolf
  • Patent number: 8287788
    Abstract: The present invention relates to a process for the continuous production of thermoplastically processable polyurethane elastomers, by metering a polyisocyanate (A), a proportion of 1-80 equivalent%, based on the isocyanate group content of the polyisocyanate (A), of a compound (B) having an average of at 1.8-3.0 hydrogen atoms having Zerewitinoff activity, with an average molar mass of 450-5000 g/mol, and a proportion of 12-99 equivalent%, based on the isocyanate group content of the polyisocyanate (A), of a chain extender (C), into a self-cleaning twin-screw extruder whose diameter is 32-62 mm, which is operated at shear rates above 6000 s?1 and residence times of 1-20 seconds, and then bringing the mixture from the self-cleaning twin-screw extruder into a second apparatus in order to complete the reaction.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: October 16, 2012
    Assignee: BASF Aktiengesellschaft
    Inventors: Guenter Scholz, Marian Mours, Sven Lawrenz, Horst Papenfuss, Christoph Bahr, Ruediger Krech
  • Patent number: 8197726
    Abstract: A cellulose acylate film in which the number of V-shaped thickness-uneven portions having a variation width in the thickness direction of 0.1 to 10% of a film thickness and a width in the in-plane direction of 1 to 20 mm is in the range of 0 to 10 per 100 m in the length direction of the film. A display unevenness is solved in a liquid crystal display device having the cellulose acylate film.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: June 12, 2012
    Assignee: FUJIFILM Corporation
    Inventors: Kiyokazu Hashimoto, Zemin Shi
  • Publication number: 20120139154
    Abstract: A process of producing a thermoplastic starch/polymer blend involves introducing dry starch into a twin-screw extruder at a first location along the extruder, introducing a plasticizer into the twin-screw extruder at a second location along the extruder downstream of the first location to form a starch paste and then gelatinizing the starch paste in the extruder to form thermoplastic starch, and, introducing dry polymer at ambient temperature into the twin-screw extruder at a third location along the extruder downstream of the second location to form a blend with the thermoplastic starch in the extruder.
    Type: Application
    Filed: February 2, 2010
    Publication date: June 7, 2012
    Inventors: Michel Huneault, Hongbo Li
  • Publication number: 20120126444
    Abstract: An extrusion-molding machine includes a screw, a die and a high-hardness coat layer. The screw has a blade portion to extrude a molding material. The screw is disposed in a tightly-closed space which is maintained in a reduced-pressure atmosphere. The die molds an extruded molding material. The high-hardness coat layer is provided at least on the blade portion.
    Type: Application
    Filed: January 16, 2012
    Publication date: May 24, 2012
    Applicant: IBIDEN CO., LTD.
    Inventors: Norihiko YAMAMURA, Kazuya NARUSE, Eiji SUMIYA, Kosei TAJIMA
  • Patent number: 8153541
    Abstract: A ceramic article comprises ceramic fibers having an aspect ratio of greater than 3:1 and ceramic particles. The ceramic fibers are substantially randomly oriented in three dimensions in the ceramic article. A method of forming the ceramic article includes the step of providing a composition including ceramic fibers having an aspect ratio of greater than 3:1 and ceramic particles. The composition is extruded through a multi-screw extruder having at least three intermeshing screws to form an extrudate. The extrudate is heated to form the ceramic article.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: April 10, 2012
    Assignee: Century, Inc.
    Inventors: Thomas W. McCullough, James E. Schuetz, Thomas D. Wood
  • Patent number: 8101108
    Abstract: The present invention provides a method for producing a cellulose acylate resin film, comprising the step of, melting a cellulose acylate resin in an extruder and extruding the molten cellulose acylate resin to a die, wherein the step of melting is carried out using a tandem extruder having a first-stage extruder and a second-stage extruder connected in tandem, in order to prevent discoloration and thickness non-uniformity make the film seriously defective for use as an optical film. Because the resin in the form of a powder or flakes is once pelletized in a pelletizing extruder, and then the pellets are melt-extruded in an extruder. This promotes discoloration of the resin, disadvantageously.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: January 24, 2012
    Assignee: Fujifilm Corporation
    Inventor: Masaaki Otoshi
  • Patent number: 8066934
    Abstract: The present invention relates to a process of production of polyamide compounds with natural fibers and polyamide compounds with natural fibers, establishes the fact of using natural fiber to obtain a compound with mechanical properties close to the one obtained with inorganic loads by means of continuous process with extrusion and molding by injection process; the processes presented allows the obtainment, by means of injection, of finished products with precise dimensional and complex features; the fact that the compound with natural Curauá fiber presenting suitable mechanical properties combined to a lesser density than the compound with inorganic load is interesting to the automotive industry as vehicles manufactured with lighter parts consume less fuel.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: November 29, 2011
    Assignees: Sabic Innovative Plastics South America, Universidade Estadual de Campinas
    Inventors: Marco Aurélio de Paoli, Karen Kely Godoi Fermoselli, Márcia Aparecida da Silva Spinacé, Paulo Aparecido dos Santos, João Carlos Girioli
  • Patent number: 8034269
    Abstract: A compounding process is disclosed. The process includes (i) melt blending in an extruder at least two polymeric resins to produce a mixture that includes at least one resin that dissociates to yield monomers and/or oligomers upon heating, said mixture containing less than 1 percent of volatile components, (ii) introducing into said extruder an inert entraining agent, and (iii) removing said entraining agent together with said volatile components from said extruder. The extruder includes at least one melting zone, at least two degassing zones and at least one mixing zone. The end product has a particularly low content of residual solvent and at the same time a low content of monomers or oligomers.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: October 11, 2011
    Assignee: Bayer Material Science
    Inventors: Christoph Schwemler, Martin Lüdeke, Christian Kords, Reiner Rudolf
  • Publication number: 20110233818
    Abstract: The invention relates to a process for extruding plastic compositions, in particular polymer melts and mixtures of polymer melts, above all thermoplastics and elastomers, particularly preferably polycarbonate and polycarbonate blends, also with the incorporation of other substances such as for example solids, liquids, gases or other polymers or other polymer blends with improved optical characteristics, with the assistance of a multi-screw extruder with specific screw geometries.
    Type: Application
    Filed: May 30, 2009
    Publication date: September 29, 2011
    Applicant: Bayer MaterialScience AG
    Inventors: Thomas Koenig, Michael Bierdel, Ulrich Liesenfelder, Klemens Kohlgrüber, Johann Rechner
  • Patent number: 7981340
    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: Grant
    Filed: December 7, 2009
    Date of Patent: July 19, 2011
    Assignee: Buhler AG
    Inventors: Achim-Phillipp Sturm, Jürgen Schweikle, Andreas Christel, Federico Innerebner
  • Patent number: 7935283
    Abstract: Compositions that are intimate blends of ultrahigh molecular weight polyethylene and high-density polyethylene (HDPE), and which are melt spinnable. The compositions include certain quasi-spherical particles. Also disclosed is a method of melt spinning from such compositions and the multi-filament fibers produced thereby. The fibers of the invention are useful in a variety of applications.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: May 3, 2011
    Assignee: Honeywell International Inc.
    Inventors: Thomas Yiu-Tai Tam, Norman Aminuddin, John A. Young
  • Patent number: 7931767
    Abstract: A process for manufacturing elastomeric components of a tire for a vehicle wheel includes feeding a continuous elongated element from a delivery member by exerting a feeding pressure inside the delivery member, rotating a building support around a geometrical rotation axis of the support, carrying out controlled relative displacements between the delivery member and the support to form a tire component, stopping the feeding of the elongated element when formation of the tire component is complete, and exerting a counter-pressure inside the delivery member after stopping the feeding. Rotating the support assists circumferential distribution of the elongated element on the support. Carrying out controlled relative displacements assists transverse distribution of the elongated element on the support. The tire component is defined by a plurality of coils laid in a pre-established deposition pattern depending on a predetermined cross-section outline to be given to the tire component.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: April 26, 2011
    Assignee: Pirelli Pneumatici S.p.A.
    Inventors: Francesco D'Oria, Renato Caretta, Enrico Sabbatani, Maurizio Marchini