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| Number | Title | Issue Date |
| 8042987 | Kneading extruder Twist kneading disks are arranged such that the width of a piece of disk is 0.1 to 0.5 times the cylinder inner diameter D, a helix angle θ as an angle between a vertex of the front surface side of the disk and vertex of the rear surface side of the disk at the tip... | 10/25/2011 |
| 7618180 | Kneading disk apparatus A kneading disk has a plurality of disk elements having flight tips arranged at a helix angle θ in a direction supporting main streams of a resin. The flight tips of every two adjoining disks have a clearance formed therebetween. The resin is kneaded by undergoing ... | 11/17/2009 |
| 7490974 | Screw extrusion press and method with mixing rings having passages A screw extrusion press for processing thermoplastic and not reticulating polymers comprises a conveying screw (1) in a cylinder (2). The screw comprises a conveying zone (7) and a mixing zone with 10 mixing rings (3). These mixing rings ... | 02/17/2009 |
| 7425126 | Molding-system valve having knockdown retainer Disclosed is: (i) a molding-system valve, (ii) a molding system having a molding-system valve, and/or (iii) a method of a molding-system valve, amongst other things. ... | 09/16/2008 |
| 7350959 | Pin extruder with gear pump A conveying apparatus comprising an extruder having a housing, a gear pump connected to the extruder, an extruder cylinder rotatably mounted in the housing, and a plurality of pins extending radially outwardly from the extruder cylinder. The extruder housing is prov... | 04/01/2008 |
| 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 |
| 7255472 | Mixing device with mixing ring having offset channels with spaced baffles A device comprising a shaft, a front ring connected to this shaft, an end ring connected to the shaft at a distance A from the front ring, and a loose mixing ring, which is freely rotatable and located between the front ring and the end ring. The mixing ring has a f... | 08/14/2007 |
| 7246936 | 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 shaft portion and at least one mixing element ring connected to the shaft portion, or a mixing element having an aperture therethrough, or both.... | 07/24/2007 |
| 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 |
| 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 |
| 7172333 | Injection molding screw An injection molding screw for metal injection molding includes a first end, a second end, a longitudinal body with a first stage and a second stage extending axially along a length of the screw between the ends, a pressure retention device, and optionally, a screw ... | 02/06/2007 |
| 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 |
| 7101076 | Extruder An extruder is provided having a transfer region that, in an extruder sleeve, is provided with ribs between which extend flow channels. Disposed opposite the sleeve flow channels are flow channels formed in the extruder screw, and the sum of the cross-sections of th... | 09/05/2006 |
| 7083319 | Large-volume reactor having a plurality of process spaces A large-volume reactor (10) for treating a free-flowing material, having a housing (12) which surrounds an interior space (14), a material feed (11) at one end of the housing (12) and a material discharge (13) at the other e... | 08/01/2006 |
| 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 |
| 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 |
| 6790025 | Extrusion molding apparatus An extrusion molding apparatus capable of improving the extrusion rate of the ceramic material without a major reconstruction of a drive system is disclosed. The extrusion molding apparatus comprises screw extruders (2, 3) including housings (29, 39) h... | 09/14/2004 |
| 6783270 | Fractional and higher lobed co-rotating twin-screw elements A twin-screw extrude having a novel fractional element has been invented that can provide different tip angles. The twin-screw extruder is suitable for processing thermo plastic, thermo set and other material. It has a barrel with two parallel intersecting bores, tw... | 08/31/2004 |
| 6681837 | Air releasing check structure of metal injecting machine An air releasing check structure of a metal injecting machine has a seat rod installed between a rear seat of a feeding screw rod and the extruding head at a front end of the front section. A periphery of the seat rod is enclosed by a check toggle. If the... | 01/27/2004 |
| 6613128 | Twin screw extruder, method of making aromatic polycarbonate using a twin screw extruder, and method of removing volatiles from an aromatic polycarbonate melt An aromatic polycarbonate extruder which is a twin screw extruder for kneading components into a molten aromatic polycarbonate, the extruder having at least one module consisting of a kneading unit, a material seal unit, a back kneading unit and full-flig... | 09/02/2003 |
| 6588925 | Rotor-stator mixing apparatus especially for single screw extruder A single screw extruder comprises a mixer associated with the screw, and comprising a rotor driven by the screw and a stator, the rotor and the stator each carrying mutually facing interengaging rings of teeth whereby the material is urged outwardly from ... | 07/08/2003 |
| 6447156 | Mixing element for screws and an extruder comprising the mixing element The mixing element has a central hole for keying to the shaft of the screw and an outer profile which can be produced as a result of the removal of material from a circular element along at least one arc of its Outer portion by cutting performed by a poin... | 09/10/2002 |
| 6406174 | Process and device for monitoring the degree of wear of a compression worm conveying plasticized material An apparatus and a method for controlling a degree of attrition or wear of a sealing screw conveying plasticized material are provided. The apparatus includes an opening which intersects the wall of a housing of the screw in the region of the screw thread... | 06/18/2002 |
| 6254266 | Floating ring mixer for extruder An extruder-mixer has a plurality of rotor rings provided on the downstream end of a motor driven extruder shaft mounted for rotation in a conventional heated barrel or stator. The rings comprise a plurality of spaced driven rotor rings spaced apart from ... | 07/03/2001 |
| 6241375 | Shear ring screw A shear ring screw adopted for use with polymer extrusion or injection molding machinery including a first stage feeding portion (26), a second stage ring section (28) and a third stage tip section (44B). It would be generally aimed at improving the melti... | 06/05/2001 |
| 6234659 | Surge suppressor for vented injection molding machine screw A plasticating apparatus adapted to handle a wide variety of synthetic resinous materials without predrying. The plasticating apparatus includes a two-stage screw rotatably and reciprocably mounted within a barrel. A surge suppressor is provided between t... | 05/22/2001 |
| 6179458 | Forming a solution of fluids having low miscibility and large-scale differences in viscosity This invention relates to mixing two substantially immiscible fluids having substantial viscosity differences into a single phase solution. The invention particular includes a mixer comprising a specially designed conveyor flights to provide shear mixing ... | 01/30/2001 |
| 6179460 | Twin screw extruder with single-flight kneading disks A twin screw extruder has a casing with a working direction, two partially intersecting casing bores, which are parallel to each other, two shafts, which are disposed in the casing bores and which are drivable to rotate in the same direction of rotation a... | 01/30/2001 |
| 6170975 | Multi-shaft extruder kneading discs, kneading disc blocks and extruder There is provided a multi-shaft kneading disc, kneading disc block, and a multi-shaft extruder containing the same. The kneading disc and each kneading disc in the kneading disc block having a disc shape with a central section defining an extruder shaft m... | 01/09/2001 |
| 6116770 | Mixing element for screw extruder A mixing element for a screw extruder comprises an element including opposing lobes and a central portion having common opposing broad surfaces; one lobe broad surface being formed into a taper. The elements may be used individually or combined in blocks,... | 09/12/2000 |
| 6017996 | Method for the continuous manufacturing of silicone rubber composition A method for manufacturing of a silicone rubber base composition in a mass-like form, comprises: (A) preparing a freely flowable powdered silicone rubber composition comprising (a) a cross-linkable polydiorganosiloxane with a viscosity of at least 1×10 | 01/25/2000 |
| 5988866 | Floating sleeve mixer and method A mixer for plasticable resins has a fixedly positioned heated barrel with a power driven screw mounted axially in the barrel bore, a driven rotor is axially aligned with and extending in a downstream direction from the downstream end of power driven scre... | 11/23/1999 |
| 5851065 | Apparatus for recycling resin scrap A process and an apparatus for recycling resin scrap including a thermosetting resin paint film and a thermoplastic resin substrate as its major components, wherein the resin scrap is supplied into a passage of a cylinder, melted, and delivered by screw a... | 12/22/1998 |
| 5800055 | Temperature control system and kneading-mixing extrusion apparatus having the temperature control system Disclosed is a temperature control system and a kneading-mixing extruder apparatus implementing the temperature control system. The temperature control system includes a flow passage formed in a stationary disc having a plurality of holes provided in a kn... | 09/01/1998 |
| 5738884 | Multi-stage vacuum kneading-extruder apparatus A multi-stage vacuum kneading-extruder includes a degassing chamber for storing material to be processed and reducing pressure of space for storing the material, a kneading-conveyer device for kneading while conveying the material sent from the degassing ... | 04/14/1998 |
| 5735599 | Screw for molding machine that prevents a wrapping phenomenon A screw for a molding machine comprises a feed zone, a compression zone and a metering zone. The metering zone 12 is provided with a screw element having an intermediate mixing element 12b and a forward end mixing element 12a, and the upstream side of the... | 04/07/1998 |
| 5694833 | Short length tapered extrusion cooking device Improved short length extrusion cooking devices (10) are provided which can achieve product throughput and quality characteristics of conventional long-barrel extruders. The short length extruders (10) of the invention include a relatively short barrel (1... | 12/09/1997 |
| 5672005 | Kneader A kneader with a vent function, including a kneading extruder, which permits the continuous viscous flow of material to be kneaded even at a high speed rotation to prevent the generation of cuttings and exhibiting sufficient venting capability. The kneade... | 09/30/1997 |
