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| Number | Title | Issue Date |
| 7654725 | Degassing of flowable masses in a multiple-screw extruder The invention relates to a multiple-screw extruder that comprises a first process chamber (1) and a second process chamber (2). In the degassing zones of said extruder, at least the first process chamber is provided with at least one degassing opening.... | 02/02/2010 |
| 7654726 | Multi-shaft extruder A multiple-shaft extruder comprises a core (4) with outward leading channels that can be flown through by a cooling liquid. At least two housing segments (16 to 19) are each provided with a cooling circuit with interconnected cooling bore holes ... | 02/02/2010 |
| 7425090 | Device for dispersing and melting flowable materials An apparatus for dispersing and melting flowable substances includes axis-parallel supporting shafts rotatable in the same direction. Screw elements with the same direction of thread are fitted on the shafts so as to rotate in unison and intermesh. The screw element... | 09/16/2008 |
| 7419295 | Extruder An extruder includes a barrel and a kneading screw extending through the barrel in a rotatable fashion. The kneading screw is provided with a devolatilization portion. The devolatilization portion includes a kneading flight that is twisted in a direction for transfe... | 09/02/2008 |
| 7380973 | Method and device for the reprocessing of a thermoplastic polycondensate Method and device for reprocessing a thermoplastic polycondensate, in particular for the recycling of thermoplastic polycondensates, such as polyethylene terephthalate, polyester or polyamide is provided. The polycondensate is introduced into an extruder in a solid ... | 06/03/2008 |
| 7354187 | Rubber kneading machine A rubber kneading machine obviates an operator having to touch rubber on a rotating roll surface to perform a rubber kneading operation, permits unattended operation, is intrinsically safe, improves a rubber kneading process productivity, secures stable quality of k... | 04/08/2008 |
| 7350960 | Dual flight rotors for continuous mixer assembly In the field of continuous mixer apparatus for commingling particulate thermoplastic materials, employing at least one main rotor with a helical profile body configuration, an improved profile for the peripheral threads is provided. It presents a first upstream feed... | 04/01/2008 |
| 7322738 | Conical twin-screw extruder and dehydrator In a conical twin-screw extruder in which two rotor shafts having flights on the outer peripheral surfaces thereof and being adjacent to each other in the lateral direction are accommodated in a barrel having a raw material supply port on one side and a raw material... | 01/29/2008 |
| 7290923 | Extruder/gear pump assembly An extruder/gear pump assembly is provided having an extruder screw connected to the gear pump. The relative speed of the extruder screw and the gear pump are adjustable by the use of a shaft housed in a cavity of the extruder screw. ... | 11/06/2007 |
| 7284897 | Extruder for continuously working and/or processing flowable materials An extruder has at least three parallel, co-rotating shafts disposed in a cavity therein along a circle. The shafts are equipped with screw elements closely intermeshing over their whole circumference. At least one screw element is formed as a passage screw element ... | 10/23/2007 |
| 7270471 | Extruder In an extruder for continuous working and/or processing of flowable substances having at least two parallel, corotating shafts equipped with intermeshing screw elements whose face is limited by circular arcs corresponding to the outside screw diameter, the screw cor... | 09/18/2007 |
| 7267474 | Plasticating screw A plasticating screw including a grating mixing section provided to enhance mixing of incompatible materials. The screw includes a mixing section including an inlet groove having a closed distal end, a discharge groove circumferentially spaced from the inlet groove,... | 09/11/2007 |
| 7264460 | Installation for preparing materials A material processing plant comprises a first screw-type extruding machine (1) and a second screw-type extruding machine (2) which is disposed downstream thereof. Between the two screw-type extruding machines (1, 2), provision is made for a deli... | 09/04/2007 |
| 7244060 | Kneading apparatus A kneading apparatus includes a barrel having a chamber, which is a tubular hollow, a biaxial screw set for extruding a material to be kneaded downstream by rotation of the biaxial screw set inside the chamber, and kneading blade sections, mounted in the screw set, ... | 07/17/2007 |
| 7198840 | Profile-extruded poly(vinyl chloride) articles and method of making same A profile-extruded article is disclosed, made of a fiber-reinforced polymer of vinyl-chloride monomer, wherein the article has a ratio of actual specific gravity to theoretical specific gravity of nearly unity. A method of making the article is also disclosed. ... | 04/03/2007 |
| 7191700 | Solid-liquid separator A system is provided with a solid-liquid separator which can transport sludge and other material for treatment without clogging and can efficiently separator liquid from such material for treatment. The system includes movable plates and fixed plates alternatingly d... | 03/20/2007 |
| 7188992 | Kneading element and related articles A modified kneading element for a screw extruder, peripherally congruent, aligned, and contiguous with a cross-sectional profile of a modified conveying element, includes a central portion defining a root diameter having a shaft receiving bore defined therein; and a... | 03/13/2007 |
| 7160102 | Injection unit for injection molding machines with continuously operating plasticizing unit An injection unit for injection molding machines includes an extruder as plasticizing unit and a plunger-type injection molding device that can be coupled to the injection molding machine by an injection nozzle. The plunger-type injection molding machine has an inje... | 01/09/2007 |
| 7132564 | Process for preparing cyclic ketones The present invention provides a process for preparing cyclic 1,3-keto esters in the absence of solvent, using solid-state or high viscosity reactors. ... | 11/07/2006 |
| 7128464 | Method and device for regulating pressure in a single-screw degassing extruder or in a cascade extruder The invention relates to a method for regulating the minimal value of the pressure in the first half of the metering zone in a direction of conveyance in a single-screw degassing extruder or in a cascade extruder during the conveying of a melt consisting of a thermo... | 10/31/2006 |
| 7101165 | Extrusion molding apparatus for ceramic molded product An extrusion molding apparatus comprises a shaping die for producing a ceramic molded product, and a screw extruder having built therein an extruding screw (40) for mixing while leading a ceramic material forward. The extruding screw (40) includes a pr... | 09/05/2006 |
| 7097345 | Screw with heat exchange function, mixer and extruder A screw with a heat exchange function is rotatably fit in a barrel, and includes a heat exchange medium chamber located at a center section in the radial direction, running along the lengthwise direction. The chamber stores a heat exchange medium supply pipe supplyi... | 08/29/2006 |
| 7097442 | Extruder An extruder capable of obtaining a treatment volume equal to that of the conventional art without enlarging a screw diameter is provided. The extruder includes screw shafts, a drive unit, and a barrel, in which three or more screw shafts having the same diameter and... | 08/29/2006 |
| 7083320 | Kneading apparatus and method, including selectable supply ports, for kneading rubber or rubber compositions A continuous kneading apparatus and method are provided wherein discharge ports are provided at a plurality of positions of the barrel to discharge a kneaded product, and one of the plurality of the discharge ports is selected according to a desired kneading conditi... | 08/01/2006 |
| 7080935 | Multi-screw extruder The invention relates to a multi-shaft extruder for the continuous treatment and/or processing of bulk material, especially a powdery, granular or flocculent product, comprising a plurality of shafts (3) which are arranged in a crown-like manner in a cavity (... | 07/25/2006 |
| 7069255 | Method and device for optimising process management and process control in an arrangement for producing farinaceous products The invention relates to a method and a device for optimising process management and process control in an arrangement for producing, especially short and long, farinaceous products. The aim of the invention is to improve dryer regulation and reduce faulty productio... | 06/27/2006 |
| 7044289 | Screw conveyor for the transport of flowable substances and/or lumps of material A screw conveyor for the transport of flowable substances and/or lumps of material comprises a rotatable first screw (1) provided with helical windings (2) arranged in a housing (3) with an inlet opening and an outlet opening. The housing (3 | 05/16/2006 |
| 7040798 | Ring extruder feed The invention relates to a multi-screw extruder for the continuous treatment and/or processing of a bulk material, especially a product in powder, granular or flake form, comprising several shafts (3) which are arranged in a ring shape in a cavity (1) ... | 05/09/2006 |
| 7025491 | Homogenizing and/or dispersing device comprising endless screws An apparatus for homogenizing and/or dispersing at least one viscous substance and at least one solid and/or at least one other substance of different viscosity includes in a space in a housing axis-parallel rotatable shafts disposed along a circle with equal centra... | 04/11/2006 |
| 7021816 | Plasticating screw A plasticating screw including a grating mixing section provided to enhance mixing of incompatible materials. The screw includes a mixing section including an inlet groove having a closed distal end, a discharge groove circumferentially spaced from the inlet groove,... | 04/04/2006 |
| 7017732 | Multiple extruder configuration The invention concerns a multiple-extruder configuration in which two co-rotating twin-screw extruders and a counter-rotating twin screw extruder are connected to each other with respect to the flow of material. ... | 03/28/2006 |
| 7011112 | Diverter valve for an extruder, in particular a twin-screw extruder A diverter valve is provided for an extruder, especially a twin-screw extruder, that allows for the replacement of the extruder screws without dismounting the same. The diverter valve includes a valve housing with a first flow passage, which can be fastened indirect... | 03/14/2006 |
| 6997694 | Extruder An extruder drive has a housing, at least two extrusion worms each having a drive shaft extending into the housing, and at least one drive motor including at least one cylindrical stator fixed in the housing and a cylindrical rotor cooperating with the stator so as ... | 02/14/2006 |
| 6989120 | Heat-vulcanizable silicone compositions from premix A continuous process of preparing a heat-vulcanizable filled silicone composition, comprises mixing filler and high viscosity silicone polymer continuously in a first co-rotating intermeshing twin screw extruder; and compounding a filler and silicone polymer mixture... | 01/24/2006 |
| 6974243 | Screw element for same-sense rotating multi-screw extruders A screw element includes an outer radius Ra and a core radius Ri for multiscrew extruders with co-rotating and intermeshing screw shafts. The screw element has in axial cross section through its longitudinal axis a profile which has at each of ... | 12/13/2005 |
| 6958128 | Dynamic mixer screw tip The present invention includes a screw tip for an extruder screw for effecting mixing in an extruder. The screw tip has a substantially conical outside surface and at least one discontinuous fin. The at least one fin protrudes from the outside surface of the screw t... | 10/25/2005 |
| 6913380 | Continuous preparation of heat-vulcanizable silicone compositions High levels of treated fumed silica, processing fluid and high molecular weight silicone polymer are continuously compounded into a homogeneous silica filled heat-vulcanizable silicone composition by forming a premix in a continuous annular layer mixer and continuou... | 07/05/2005 |
| 6913379 | Closed kneader With conventional closed kneaders, the temperature of the kneaded material remains high at the end of primary kneading because insufficient cooling is made in the interior part of the kneaded material, making it necessary to either provide cooling time between the p... | 07/05/2005 |
| 6908573 | Polymeric resin blends and methods of manufacture thereof A screw for a multiple screw extruder comprises at least two conveying sections for transporting a composition comprising a polymeric resin from the feed end to the discharge end of the extruder; and at least two mixing sections comprising screw elements having two ... | 06/21/2005 |
| 6890091 | Kneading apparatus, including selectable discharge ports, for kneading rubber or rubber compositions A continuous kneading apparatus and method are provided wherein discharge ports are provided at a plurality of positions of the barrel to discharge a kneaded product, and one of the plurality of the discharge ports is selected according to a desired kneading conditi... | 05/10/2005 |
