By Cutting At Point Of Extrusion Patents (Class 264/142)
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Patent number: 7815828Abstract: A method for manufacturing thermoplastic resin expandable granules comprising the steps of: injecting a blowing agent under pressure into a thermoplastic resin which is melted in an extruder; extruding the melted resin containing the blowing agent as an extrudate from a plurality of small holes in a die attached to a distal end of the extruder directly into a coolant liquid, and directly cutting the extrudate by high-speed rotary blades; and cooling and solidifying the extrudate by contacting with the coolant liquid, and thereby obtaining the expandable granules wherein the melted resin containing the blowing agent passing through land parts of the small holes of the die is extruded such that a shearing speed is 12,000 to 35,000 sec?1, and an apparent melt viscosity of the resin is 100 to 700 poise.Type: GrantFiled: September 8, 2004Date of Patent: October 19, 2010Assignee: Sekisui Plastics Co., Ltd.Inventors: Toshiro Kobayashi, Tsuneo Doi, Hideki Kobayashi
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Patent number: 7776244Abstract: A process for the preparation of expandable styrene polymers having a molecular weight Mw of greater than 170,000 g/mol, which comprises conveying a blowing agent-containing styrene polymer melt having a temperature of at least 120° C. through a die plate with holes whose diameter at the die exit is at most 1.5 mm, and subsequently granulating the extrudate, and expandable styrene polymers (EPS) having a molecular weight Mw of more than 170,000 g/mol with 0.05 to 1.5% by weight of internal water.Type: GrantFiled: June 6, 2003Date of Patent: August 17, 2010Assignee: BASF AktiengesellschaftInventors: Franz-Josef Dietzen, Gerd Ehrmann, Bernhard Schmied, Martin Laun, Klaus Hahn, Joachim Ruch, Markus Allmendinger, Jan Holoch, Achim Datko
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Patent number: 7767125Abstract: Process for production of polymer blends which are suitable as filter aids and are composed of polystyrene and of crosslinked water-insoluble polyvinylpyrrolidones via processing of the two components in an extruder, which comprises melting polystyrene in an extruder and then treating it with the polyvinylpyrrolidone, and adding, to the mixture of the components, from 0.1 to 10% by weight of water, based on the total amount of polystyrene and popcorn polymer, and extruding and comminuting the mixture.Type: GrantFiled: March 14, 2006Date of Patent: August 3, 2010Assignee: BASF AktiengesellschaftInventors: Klemens Mathauer, Marianna Pierobon, Tobias Petsch, Simone Schillo, Michael Kerber, Frank Müller
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Publication number: 20100148110Abstract: Expandable particle composite material suitable for the preparation of expanded materials having a density lower than 40 g/l and a content of closed cells of at least 60%, including heterophase cavities and/or heterophase domains, whose matrix is a synthetic thermoplastic resin having at least 60% by weight of a vinyl aromatic polymer and in which an expanding system is contained, together with a heterogeneously distributed graphite material, having a graphitization degree, calculated by means of the Maire and Mering formula, of at least 0.2.Type: ApplicationFiled: May 15, 2008Publication date: June 17, 2010Applicant: POLIMERI EUROPA S.P.A.Inventors: Alessandro Casalini, Riccardo Felisari, Dario Ghidoni, Antonio Ponticiello, Alessandra Simonelli
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Patent number: 7713451Abstract: A process for manufacturing a water-resistant telecommunication cable. The cable has a solid and compact element having a water-soluble polymer material having vinyl alcohol/vinyl acetate copolymer having a hydrolysis degree of 60-95% and a polymerisation degree higher than 1,800 and at least one solid low-melting and one solid high melting plasticizers. The process produces continuously the water-soluble polymer material by separately feeding, in sequence, a multi-screw extruder, in the flow direction, with the copolymer and the high melting plasticizer melting and mixing them while transporting them through the extruder, and with the low melting plasticizer, melting and mixing them with the copolymer and the high melting plasticizer, subsequently homogenizing the copolymer and the plasticizers and finally discharging the melt, at a temperature lower than or equal to 205° C. A process for extruding the above PVA based water-soluble polymer material.Type: GrantFiled: October 29, 2003Date of Patent: May 11, 2010Assignee: Prysmian Cavi E Sistemi Energia S.R.L.Inventors: Massimiliano Pavan, Stefano Testi, Raffaella Donetti, Cristiano Puppi, Mauro Maritano
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Patent number: 7662320Abstract: A pasty molding material is divided by a process wherein, for the division, the pasty molding material is brought into contact with at least on stream containing at least one fluid medium.Type: GrantFiled: February 4, 2004Date of Patent: February 16, 2010Assignee: BASF AktiengesellschaftInventors: Ulrich Mueller, Jan Mueller
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Patent number: 7658874Abstract: An improved process for the pelletization of polymers is disclosed, using a die in which the die holes incorporate a reverse taper along at least a portion of the length thereof. Conditions for operation of an under melt cutter incorporating this die are also disclosed.Type: GrantFiled: July 20, 2004Date of Patent: February 9, 2010Assignee: E.I. du Pont de Nemours and CompanyInventors: Richard Alan Jackson, Dennis Jack Royer, Marion G. Waggoner
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Publication number: 20100025879Abstract: A highly filled composite is formed by extruding through a multiple screw extruder a thermoplastic resin and sufficient filler so that an autogranulating extrudate exits the extruder barrel. The extruder is operated without an exit manifold, strand die or breaker plate. The extrudate forms irregularly shaped granules. The granules provide a molding composition that can be used to form highly filled molded articles such as fuel cell separator plates and end plates by compression, injection or compression-injection molding.Type: ApplicationFiled: June 26, 2007Publication date: February 4, 2010Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Soemantri Widagdo, Paul D. Driscoll, Bridget A. Bentz, Mary R. Boone
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Publication number: 20100007039Abstract: Non-blocking polymer pellets are produced in spherical or nearly spherical form by introducing molten polymer directly from a polymerization reactor into a coolant and pelletizing just prior to, simultaneously with, or immediately following entry into the coolant such that residual heat allows the polymer pellets to change their shape to eliminate sharp corners, particularly cylindrical shapes, and assume a spherical-type morphology.Type: ApplicationFiled: November 24, 2005Publication date: January 14, 2010Applicant: WACKER CHEMIE AGInventors: Ernst Selbertinger, Oliver Schaefer
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Publication number: 20100007040Abstract: The invention relates to vitreous aroma particles and the preparation thereof, as well as to the use thereof in foods, consumer articles and pharmaceuticals.Type: ApplicationFiled: September 17, 2009Publication date: January 14, 2010Applicant: Symrise GmbH & Co. KGInventors: KARL-HEINZ RENZ, Birgit Schleifenbaum, Jens Uhlemann, Fouad Saleeb
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Patent number: 7641833Abstract: An object of the present invention is to economically produce a resin composition pellet with the degradation of resin suppressed, by using an ordinary extruder, the resin composition pellet being filled with a desired filling amount of a uniformly compounded fibrous filler, and having a required weight average fiber length, in particular, to produce a resin composition pellet used for a socket of a planar socket pin in which the pitch interval of a lattice area of a semiconductor device is 2.0 mm or less, the thickness of the lattice area is 0.5 mm or less, and the height of the socket is 5.0 mm or less.Type: GrantFiled: April 12, 2005Date of Patent: January 5, 2010Assignee: Polyplastics Co., Ltd.Inventors: Kei Aoki, Masayuki Sakai, Kazufumi Watanabe
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Patent number: 7638077Abstract: A method of making drainage elements from recycled thermoplastic plastics materials comprising the steps of: providing chopped waste plastics to a screw extruder having a screw. In the extruder, the waste is compressed and delivered to a twin-plate agglomerator. One plate is closely adjacent to, and rotates with respect to, the other plate. Between the plates the waste plastics is agglomerated and the mechanical energy imparted by the extruder screw and plates heats the plastics material to about the melting point of the thermoplastic material. Hot noodles of melted plastics material extrudes from an outlet of the plates. The noodles are conveyed to a chute of a compactor funnel which has an outlet disposed closely above an output conveyor belt.Type: GrantFiled: March 16, 2004Date of Patent: December 29, 2009Assignee: Econoplas LimitedInventor: John Gaskarth
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Patent number: 7629047Abstract: Aramid fibrils having in the wet phase a Canadian Standard Freeness (CSF) value less than 100 ml, after drying a specific surface area (SSA) less than 7 m2/g, and a weight weighted length for particles having a length >250 ?m (WL 0.25) less than 1.2 mm, are described. A method of preparing the fibrils includes the steps (a) polymerizing an aromatic diamine and an aromatic dicarboxylic acid halide to an aramid polymer, in a mixture of N-methylpyrrolidone or dimethylacetamide and calcium chloride or lithium chloride to obtain a dope wherein the polymer is dissolved in the mixture and the polymer concentration is 2 to 6 wt. %, (b) converting the dope to fibrils by using a jet spin nozzle under a gas stream, and (c) coagulating the fibrils using a coagulation jet.Type: GrantFiled: November 30, 2004Date of Patent: December 8, 2009Assignee: Teijin Aramid B.V.Inventors: Anton Johannes Josef Hendriks, Jan Davis Cornelis Tiecken, Harrie Grotendorst, René Journee, Mirjam Ellen Oldenzeel
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Patent number: 7576158Abstract: Disclosed is the production of isocyanate-based or silane-functional adhesive and/or coating materials in the form of reactive single-component granulates and the use thereof. In particular, the reactive one-component coating-material and/or adhesive granules of the include at least one isocyanate-reactive starting polymer and at least one diisocyanate and/or polyisocyanate. Optionally, the granules of the invention may further include at least one catalyst and/or at least one wax and/or at least one resin and/or at least one preferably non-isocyanate-reactive polymer. The granules of the invention may contain an excess of diisocyanate and/or polyisocyanate which amounts to 0.5% to 30 w %, and is preferably generated by free terminal isocyanate groups.Type: GrantFiled: February 6, 2003Date of Patent: August 18, 2009Assignee: Jowat AGInventors: Theodor Hippold, Felix Starck, Christian Terfloth
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Patent number: 7550102Abstract: A method of making a composite tubular article made up of at least two concentric members, the outer of said members being tubular and the inner of said members being at least cylindrical and preferably tubular, and struts disposed in supporting and positioning orientation between the inner and outer members, by extruding a moldable material into the desired profile; stretching the inner tubular member over a cooling mandrel and disposing a cooling sleeve over the outer tubular member under conditions sufficient to solidify the article; twisting and longitudinally pulling the solidified article, so that it rotates over the cooling mandrel and inside the cooling sleeve while it is moving down stream across the cooling mandrel, whereby causing the extrudate to be twisted into a helical shape.Type: GrantFiled: August 1, 2002Date of Patent: June 23, 2009Assignee: Proteus, Inc.Inventor: F. John Herrington
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Publication number: 20090130443Abstract: The present disclosure is directed generally to synthetic organic fiber pellets, methods for making such pellets, and methods of using such pellets for making fiber reinforced polypropylene composite resins. The synthetic organic fiber pellets include at least 80 wt % of a synthetic organic fiber chosen from polyalkylene terephthalates, polyalkylene naphthalates, polyamides, polyolefins, polyacrylonitrile, and combinations thereof, and from 2 to 20 wt % of one or more waxes. The synthetic organic fiber pellets are produced using a pelleting press process.Type: ApplicationFiled: November 14, 2008Publication date: May 21, 2009Inventor: Arnold Lustiger
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Patent number: 7517422Abstract: In one embodiment or the present invention, a non-vinyl flooring is described comprising a flooring substrate having a non-vinyl composition comprising a terpolymer comprising ethylene, methyl acrylate and acrylic acid and a copolymer comprising ethylene and methacrylic acid. In one embodiment of the present invention, the non-vinyl flooring comprises a resilient non-vinyl floor tile comprising a non-vinyl composition comprising a terpolymer and a copolymer. In another embodiment of the present invention, the non-vinyl flooring comprises a resilient non-vinyl sheet flooring comprising a non-vinyl composition comprising a terpolymer and a copolymer. Methods for making the non-vinyl tile and non-vinyl sheet flooring are described.Type: GrantFiled: February 13, 2007Date of Patent: April 14, 2009Assignee: Congoleum CorporationInventors: Risi Oshilaja, John Pearson, David Lan
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Publication number: 20080217804Abstract: Process for the production of substantially cylindrical pellets of vinyl-aromatic (co)polymers, leaving a water-ring extrusion die, wherein the extrusion is effected so that the length/diameter ratio of the pellet ranges from 1.3 to 2 and the diameter of the (base) ranges from 2 to 3.2 mm, with a flow-rate of the polymer, per hole of the die, ranging from 4 to 20 kg/h.Type: ApplicationFiled: October 18, 2006Publication date: September 11, 2008Applicant: Polimeri Eupopa S.p.A.Inventors: Alessandro Casalini, Maurizio Saiu, Francesco Pasquali, Dino Ferri
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Patent number: 7393484Abstract: A water flow guide stationarily mounted in the water box of an underwater pelletizer to selectively direct the pressurized water flowing through the water box in order to more efficiently cool and rigidify the extruded polymer strands and enable the rotary cutter blades to more effectively shear the strands into pellets and to convey the sheared pellets away from the die face and rotary cutter blades of the pelletizer to the water box outlet. The water flow guide provides an accurately guided pressurized water flow which enables pelletization of polymers of various diameters and a wide range of specific gravity and rheological characteristics.Type: GrantFiled: March 25, 2003Date of Patent: July 1, 2008Assignee: Gala Industries, Inc.Inventor: John W. Martin
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Patent number: 7303709Abstract: A molded article is produced by a method of compression molding employing a specially shaped billet of thermoplastic material which is positioned at a predetermined location in a predetermined orientation with respect to the mold cavity surfaces of a mold part. In a preferred embodiment, the billet has a generally egg shape and is located adjacent a mold surface defining a small mold cavity region between two larger cavity regions.Type: GrantFiled: March 9, 2004Date of Patent: December 4, 2007Assignee: Seaquist Closures Foreign, Inc.Inventors: Bruce M. Mueller, Ben Nejad, Dieter F. Lay
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Patent number: 7296985Abstract: The invention relates to a device for granulating thermoplastic materials with a die plate and a rotary cutter head, said rotary cutter head carrying cutter knives and being positioned in front of said die plate in a water chamber, said rotary cutter head being centered by means of a rocker bearing and being connected in rotationally fixed manner to an axially displaceable drive shaft through a torque transmitting element, the torque transmitting element being in the form of a tubular slotted spring surrounding the drive shaft, said slotted spring connecting the end of the drive shaft facing the rotary cutter head to the rotary cutter head in the peripheral region of the rocker bearing, said rocker bearing being disposed between the end of the drive shaft and the rotary cutter head in the radial direction.Type: GrantFiled: September 9, 2004Date of Patent: November 20, 2007Assignee: Rieter Automatik GmbHInventor: Willfried Koehler
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Patent number: 7294299Abstract: A granulating die B is provided with a resin discharge surface 5a to which a flow of water is contacted; and a plurality of nozzles 8 which communicate to a cylinder of an extruder are provided in this resin discharge surface 5a. Upon the resin discharge surface 5a, these nozzles 8 are not formed in at least one of its regions P which are in the direction of inflow of the flow of water and in the direction of outflow of the flow of water, and its regions R which are in directions orthogonal to this direction of inflow of said flow of water and this direction of outflow of said flow of water, but are only formed in the other regions Q thereof.Type: GrantFiled: March 11, 2004Date of Patent: November 13, 2007Assignee: Sekisui Plastics Co., Ltd.Inventors: Hideo Yamanaka, Shigeru Takeuchi
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Patent number: 7267788Abstract: A tool creates a fastener-receiving cavity within a foam-filled structure that includes a panel with a slot for receiving the fastener and foam backing that is cast in place against on the underside of the panel. The tool includes a clip and a plunger. The clip is inserted into the slot and has legs joined by a hinge. The plunger is inserted between the legs to spread the legs and fills the space between the spread-apart legs that would otherwise become filled with foam. After the foam is cast, the plunger is removed so that the legs can be returned to a closely spaced relationship and the clip is removed from the slot, leaving a cavity for subsequently receiving a fastener.Type: GrantFiled: January 6, 2006Date of Patent: September 11, 2007Assignee: GM Global Technology Operations, Inc.Inventors: John R. Vella, Paul F. Zelazny
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Patent number: 7250127Abstract: The invention relates to a pelletized organopolysiloxane material, to a process for producing the pelletized material, and to the use of the pelletized organopolysiloxane material as an additive for thermoplastics.Type: GrantFiled: June 25, 2004Date of Patent: July 31, 2007Assignee: Wacker Chemie AGInventors: Michael Geck, Peter Jerschow, Gerhard Staiger, Oliver Fuhrmann
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Publication number: 20070170611Abstract: A method for starting up or stopping and restarting an underwater pelletizer is described. The method involves inducing partial freeze-off of the polymer melt in the holes of an internally insulated die plate to prevent polymer drool by passing full water flow across the face of the die plate. The method advantageously does not require using hot oil to heat the die plate or decreasing and/or increasing the heating provided to the die plate.Type: ApplicationFiled: October 16, 2006Publication date: July 26, 2007Inventor: Andrew Steven Hudson
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Patent number: 7226553Abstract: Underwater melt pelletizer dies which have a highly thermally conductive pathway from their heating source to the vicinity of the polymer exit end of their die holes and have a thermally insulating material at that end of their die holes have improved operability and can pelletize thermoplastics which are otherwise difficult or impossible to pelletize with such an apparatus.Type: GrantFiled: July 20, 2004Date of Patent: June 5, 2007Assignee: E. I. du Pont de Nemours and CompanyInventors: Richard Alan Jackson, Dennis Jack Royer, Marion Glen Waggoner
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Patent number: 6955780Abstract: An elongated composite tube made up of an inner tube 42 and an outer tube 44 (see FIG. 3) with a plurality of elongated helical ribs disposed between the inner tube and the outer tube in a supporting relationship to both. A slinky like toy made from the composite tube is also disclosed, as is a method of making both.Type: GrantFiled: May 7, 2002Date of Patent: October 18, 2005Assignee: Proteus, Inc.Inventor: F. John Herrington
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Patent number: 6896752Abstract: A process for producing compacted free-flowing nitrocellulose based lacquer raw materials is described. The process involves pressing a nitrocellulose based lacquer feed material, which is moistened with alcohol or water, through the holes of a die. The pressing step may be performed by means of at least one circulating breaker. The process optionally comprises shearing off the compacted lacquer raw material into pieces of selected length, below the die. The compacted nitrocellulose based lacquer raw materials prepared by the process of the present invention are free flowing and have a moisture content of at least 25%.Type: GrantFiled: February 23, 2000Date of Patent: May 24, 2005Assignee: Wolf Walsrode AGInventors: Lutz Hoppe, Martin Lohrie, Lutz Riechardt, Holger Tanneberger
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Publication number: 20040238993Abstract: The invention describes a process for the preparation of a granular delivery system particularly useful for the controlled release of flavoring or perfuming ingredients. The process includes the steps of forming a concentrated, highly viscous emulsion of the active compound to be encapsulated, blending the latter with a hydrophilic polymer in an extruder and shaping it into a granular free flowing solid at usual storage temperatures. The process of the invention is particularly appropriate for the encapsulation of volatile molecules as it avoids any dehydration step before or after extrusion.Type: ApplicationFiled: June 8, 2004Publication date: December 2, 2004Inventors: Daniel Benczedi, Pierre-Etienne Bouquerand, Ernst Steinboeck
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Publication number: 20040222543Abstract: A method is disclosed for producing elastomer compounds for use in the production of rubbers. At least one elastomer to be processed for the production of an elastomer mixture can be slowly added to a mixer/extruder and is mixed and plasticized and/or masticated (melted) while it passes through the mixer/extruder. The elastomer, when slowly added to the mixer/extruder, can be present in a fluid medium in an evenly distributed form.Type: ApplicationFiled: March 12, 2004Publication date: November 11, 2004Applicant: Buhler AGInventors: Federico Innerebner, Erhard Krumpholz, Christoph Naf, Achim-Philipp Sturm, Bernhard Stalder, Roland Halter
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Patent number: 6805822Abstract: A method for producing powder of a thermoplastic elastomer having a sphere-reduced average particle diameter of 700 &mgr;m or less by an under water cut method which comprises discharging the thermoplastic elastomer in melt state through a plurality of orifice in a dice in into water, and cutting the discharged matter with a cutter blade rotating along the die surface to obtain powder of the thermoplastic elastomer, wherein the method satisfies the following conditions (a) and (b): (a) the temperature of the thermoplastic elastomer directly before the die is from 120 to 220° C., and (b) the temperature of a die is from 230 to 350° C.Type: GrantFiled: September 14, 2001Date of Patent: October 19, 2004Assignee: Sumitomo Chemical Company, LimitedInventors: Tsuyoshi Takei, Hikaru Shimizu
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Publication number: 20040169307Abstract: A molded article is produced by a method of compression molding employing a specially shaped billet of thermoplastic material which is positioned at a predetermined location in a predetermined orientation with respect to the mold cavity surfaces of a mold part. In a preferred embodiment, the billet has a generally egg shape and is located adjacent a mold surface defining a small mold cavity region between two larger cavity regions.Type: ApplicationFiled: March 9, 2004Publication date: September 2, 2004Applicant: Seaquist Closures Foreign, Inc.Inventors: Bruce M. Mueller, Ben Nejad, Dieter F. Lay
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Publication number: 20040164443Abstract: There is disclosed a process for granulating a polyarylene sulfide-based resin which comprises extruding a molten polyarylene sulfide-based resin with an extruder through a die nozzle, thereafter taking off the resin in cooling water at a temperature in the range of 5 to 60° C. which flows down on a prescribed inclined surface, and cutting off the resin and pelletizing the same at a prescribed position on the downstream region. It is made possible by the above process to efficiently steadily produce micro-pellets and amorphous pellets of the polyarylene sulfide-based resin. Furthermore, in the case of preparing the compound of the pellets by compositing with a filler such as calcium carbonate, the stability of an extruder can be assured by the specific resin pellets.Type: ApplicationFiled: February 20, 2003Publication date: August 26, 2004Applicants: IDEMITSU PETROCHEMICAL CO., LTD., PETROLEUM ENERGY CENTERInventor: Yoshinari Koyama
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Publication number: 20040094858Abstract: The present invention relates to an apparatus for manufacturing foamed thermoplastic resin pellets and method thereof. The manufacturing apparatus includes a cylindrical dice, a plurality of extrusion holes formed along a radial direction of the dice and communicated with a resin flow path formed at the dice, a guide symmetric with the extrusion holes and protrudingly formed at the whole or a portion of outer circumference surface along the longitudinal direction of the dice, an operation member slidably installed along the guide, and a cutting knife with penetration holes being formed along the longitudinal direction of the knife and being communicated with the extrusion holes, wherein both ends of the knife are fixed at the upper edge of the facing planes of the operation member, and its center in the traverse direction is downwardly curved such that it is contacted with the contact line of the extrusion holes. A foaming-rate regulating member is installed at the outer circumference surface of the dice.Type: ApplicationFiled: September 11, 2003Publication date: May 20, 2004Inventor: Dong-Hee Kim
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Publication number: 20040080064Abstract: An extruder apparatus for compounding thermoplastic resin and reinforcing fibers is disclosed. Molten thermoplastic resin is mixed in intimate contact with long reinforcing fibers of at least one and one quarter inches in length under the control of a sophisticated computer system, resulting in charge ready for molding.Type: ApplicationFiled: October 25, 2002Publication date: April 29, 2004Inventors: Daniel Joseph MacPhee, Christopher Mark Tanner
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Patent number: 6706773Abstract: The present invention relates to a process for preparing a foam component, said process comprises the steps of extruding a viscous mixture from a rotating extrusion plate onto a receiving surface. Said process provides a convenient, efficient, simple means of preparing foam components, especially foam components suitable for use in cleaning compositions. The present invention also provides a foam component obtainable therefrom.Type: GrantFiled: March 27, 2002Date of Patent: March 16, 2004Assignee: The Procter & Gamble CompanyInventors: Matthew Grady McGoff, Scott Edward Stephans, Hossam Hassan Tantawy, Christopher Charles Driffield
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Patent number: 6699416Abstract: A method for processing an impact modifier material having a core and shell molecular structure comprises working the impact modifier material in a mild extruder to a state such that at least a portion of the shells of the impact modifier material fuse together to form an impact modifier material output, and pelletizing the impact modifier output. The output is preferably pellitized, and produces pellets having a narrow size distribution.Type: GrantFiled: March 21, 2001Date of Patent: March 2, 2004Assignee: General Electric CompanyInventor: Safwat E. Tadros
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Patent number: 6632525Abstract: A plastic particle is formed of a plastic material having at least one integral protruding ring disposed on its outer surface. The ring may be continuous or intermittent around a perimeter of the plastic particle. Preferably, the particles have an outer diameter in the range of 0.007 inches to 0.040 inches.Type: GrantFiled: October 11, 2000Date of Patent: October 14, 2003Assignee: Textron Automotive Company, Inc.Inventors: Stephen D. Farrington, Kenneth J. Mazzochi
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Patent number: 6620353Abstract: A method is disclosed for molding a part. The method includes steps of heating molding materials in a plasticator at a predetermined temperature; mixing the molding materials to create a molten suspension wherein a majority of the reinforcing fibers remain generally undamaged; extruding the molten suspension to form a billet and then placing the billet in a compression mold and compressing the billet with the compression mold to mold a part. In one embodiment, the reinforcing fibers are distributed throughout the part.Type: GrantFiled: January 24, 2001Date of Patent: September 16, 2003Assignee: Composite Technologies Co. LLCInventors: Fredric Louis Abrams, Robert F. Freund
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Patent number: 6613833Abstract: A method for producing an aqueous ethylene-vinyl alcohol copolymer (EVOH) composition that ensures efficient removal of alcohol not worsening the environment in and around working areas, and which provides EVOH pellets of the aqueous composition, which can be produced stably and can be washed rapidly, the method involving introducing an EVOH solution that contains at least 50 parts by weight, relative to 100 parts by weight of EVOH therein, of an alcohol having a boiling point of not higher than 100° C., into a vessel, and contacting it with water vapor in the vessel, thereby letting the alcohol out along with water vapor and taking the resulting aqueous EVOH composition that contains from 0 to 10 parts by weight of the alcohol and from 10 to 500 parts by weight of water, relative to 100 parts by weight of EVOH therein, out of the vessel; and the EVOH pellets obtained by cutting the aqueous EVOH composition obtained in the method.Type: GrantFiled: August 7, 2001Date of Patent: September 2, 2003Assignee: Kuraray Co., Ltd.Inventors: Takaharu Kawahara, Toshio Tuboi, Yukihiro Ohara
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Publication number: 20030146535Abstract: The present invention includes a composition having a co-continuous interconnecting channel morphology. These co-continuous interconnecting channels are predominately occupied with a polymer and particles that control the surface properties of the composition. The polymer composition may be used to form a desired shaped article such as plug type inserts and liners for closed containers, or it may be formed into a film, sheet, bead or pellet.Type: ApplicationFiled: January 30, 2003Publication date: August 7, 2003Inventor: Ihab M. Hekal
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Publication number: 20030116879Abstract: A molded article is produced by a method of compression molding employing a specially shaped billet of thermoplastic material which is positioned at a predetermined location in a predetermined orientation with respect to the mold cavity surfaces of a mold part. In a preferred embodiment, the billet has a generally egg shape and is located adjacent a mold surface defining a small mold cavity region between two larger cavity regions.Type: ApplicationFiled: December 21, 2001Publication date: June 26, 2003Applicant: Seaquist Closures Foreign, Inc.Inventors: Bruce M. Mueller, Ben Nejad, Dieter F. Lay
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Publication number: 20030102588Abstract: A method for processing an impact modifier material having a core and shell molecular structure comprises working the impact modifier material in a mild extruder to a state such that at least a portion of the shells of the impact modifier material fuse together to form an impact modifier material output, and pelletizing the impact modifier output. The output is preferably pellitized, and produces pellets having a narrow size distribution.Type: ApplicationFiled: March 21, 2001Publication date: June 5, 2003Applicant: General Electric CompanyInventor: Safwat E. Tadros
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Patent number: 6547549Abstract: A pelletizing die for a pelletizer comprises a base body with holes for melt to pass through; the holes are disposed in rows. Allocated to the holes are wearing-protection inserts, having holes which are in alignment with the holes in the base body. The inserts which are disposed to adjoin each other in a row have a chordal surface where they are turned toward an adjoining insert and are provided with at least one surface of an arcuate segment of a cylinder laterally of the chordal surface.Type: GrantFiled: December 15, 2000Date of Patent: April 15, 2003Assignee: Krupp, Werner & Pfeiderer GmbHInventors: Friedrich Schneider, Ulrich Wiesner, Jürgen Bartl
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Publication number: 20030047831Abstract: In a method for granulating thermoplastic polymers, in particular thermoplastic polyolefins, the polymer powder prepared in the polymerization reactor is melted and homogenized in an extruder, then forced through an extrusion die and granulated. In accordance with the invention, the polymer powder is subjected to heat treatment before introduction into the extruder, resulting in the introduction of the polymer powder into the extruder being carried out at an elevated powder temperature. The invention is particularly suitable for the granulation of polyethylene or polypropylene.Type: ApplicationFiled: September 13, 2002Publication date: March 13, 2003Inventors: Michael Witt, Rainer Anderlik, Jurgen Hofmann, Thomas Kessler, Farid Rizk, Wolfgang Bickel
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Publication number: 20030031850Abstract: A process for the production of a translucent, IR-reflective plastic element, consisting entirely or at least in part of an impact-resistant, thermoplastic plastic, containing IR-reflective particles made of a lamellar-shaped carrier pigments coated with a metal oxide and the plastic element made therefrom.Type: ApplicationFiled: May 7, 2002Publication date: February 13, 2003Applicant: ROEHM GMBH & CO. KGInventors: Wolfgang Scharnke, Volker Mende
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Publication number: 20030030162Abstract: The present invention provides a process for producing a gas generating agent capable of constantly producing a gas generating agent with a high quality.Type: ApplicationFiled: September 18, 2002Publication date: February 13, 2003Inventors: Akio Yamamoto, Takeshi Takahori
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Publication number: 20020185768Abstract: A process prepares expandable propylene polymer beads by mixing propylene polymer melt with a volatile organic blowing agent and with a nucleating agent in an extruder, whereupon the extrusion and pelletization of the extrudate takes place in a water bath under conditions of temperature and pressure at which practically no foaming of the pellets takes place.Type: ApplicationFiled: November 5, 2001Publication date: December 12, 2002Applicant: BASF AktiengesellschaftInventors: Christian Maletzko, Klaus Hahn, Isidor De Grave, Gerd Ehrmann, Franz-Josef Dietzen
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Patent number: 6491853Abstract: The present application relates to storage-stable plastics additives which are prepared by cooling a mixture of 99.9 to 10% by weight of molten additive material and 0.1 to 90% by weight of crystalline additive material after a shaping process. The shaping process is carried out by forcing the mixture out of a tool provided with die openings, and cooling can be carried out on a cooled conveyor belt. Even after prolonged storage and/or handling, these plastics additives remain free-flowing and do not stick.Type: GrantFiled: November 6, 1996Date of Patent: December 10, 2002Assignee: Clariant GmbHInventors: Karl Gaa, Günter Nowy, Gerhard Pfahler, Matthias Zäh
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Publication number: 20020171167Abstract: A method of making an injection molded article, including the steps of: mixing at a temperature of at least 100° C. polymeric materials having a thermal conductivity in the range of 0.001 to 0.01 cal/cm-sec-° C. wherein the polymeric materials are selected from the group consisting of polyethylene, polystyrene, polyester, and polycarbonate or combinations thereof, and one or more materials selected from the group consisting of ceramics, ceramic composites, metals and metal alloys in a blended relationship to form a viscous phase mixture, the materials in the viscous phase mixture being selected so that when in a solid phase it has a density greater than 4 grams/cc and a thermal conductivity greater than 0.101 cal/cm-sec-° C. to form a feedstock; cooling the blended viscous phase mixture to form the feedstock; and using the feedstock in an injection molding machine to form the article.Type: ApplicationFiled: January 29, 2001Publication date: November 21, 2002Applicant: Eastman Kodak CompanyInventors: Dilip K. Chatterjee, Syamal K. Ghosh, Donn B. Carlton, Joseph A. Manico