Abstract: A mixer having a discharge screw centrally located between first and second side walls and disposed in a cavity provided in the bottom. The discharge screw has (a) a shaft with a first end that extends through a first end wall and (b) a driven end opposite the first end of the shaft, with the driven end being connected to a motor shaft for rotating the discharge screw in at least one direction. The driven end has a recessed portion that extends into the second end wall of the vessel. The mixer may include a deflector that is fixed to the second end wall and extends toward the first end wall and is located between the mixing blades and the discharge screw.

Abstract: A degassing extruder having a multi-screw unit, which degassing extruder comprises a housing having a feed region having a feed opening, an inner housing recess having an extraction opening extending as far as the outside and an outlet region having an outlet opening. The multi-screw unit rotatably arranged in the housing recess comprises: a rotor element having a main screw web extending over the outer circumference of a rotor shaft core, and a rotationally driven satellite screw, which is mounted in a receiving groove on the rotor element, which receiving groove extends at least along part of the length of the multi-screw unit. At least in the region of the extraction opening, the main screw web above the receiving groove has an respective opening recess for leading the satellite screw through.

Abstract: A method of processing of a polymer blend is provided. The method includes the step of introducing a polymer material and a secondary polymer material into a barrel of an extruder. A user-selected gas having a supercritical point is injected into the barrel. The user-selected gas is below the supercritical point thereof. The polymer material, the secondary polymer material and the user-selected gas are mixed within the barrel to form a polymer blend. The polymer blend is ejected from the barrel into a mold, pelletizer or the like.

Abstract: A cylinder for a molding machine comprising a HIP-sintered lining layer on an inner surface of a cylindrical steel body, the lining layer comprising 38-70% by volume of tungsten carbide particles having a median diameter d50 of 1-7 ?m and a matrix composed of an Ni-based alloy, and the maximum length of the matrix in an arbitrary cross section being 12 ?m or less.

Abstract: With a mixing and kneading machine (100), wherein a worm shaft (12) moves in a housing (10) in a rotating manner and moves back and forth in a translatory movement, receptacles for kneading elements (12) are distributed non-uniformly. It is thereby possible to equip the receptacles with varying numbers of kneading elements. Quick adaptation is also thereby possible. In one embodiment, the number of kneading elements even varies over the extension direction of the mixing and kneading machine (100).

Abstract: A barrel main body, a sleeve, and a fixing mechanism (a fastening hole and a fastening device) are provided. The barrel main body includes a barrel hole having a cylindrical shape and a slit dividing an inner circumferential surface of the barrel hole. The sleeve having a hollow cylindrical shape is removably incorporated into the barrel hole. The slit includes two cutout surfaces facing each other with a space between. The fixing mechanism brings the inner circumferential surface of the barrel hole into close contact with the sleeve without any gap by narrowing the space between the cutout surfaces and deforming the barrel main body.

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.

Abstract: A two-shaft continuous kneading machine is disclosed wherein airtightness in a housing is assured by a simple means without using a mechanical seal. A magnetic coupling mechanism is formed between the mechanism in the housing (2) including shafts (3) of the kneading machine (1) and a carrier (5) arranged outside the housing (2). The magnetic coupling mechanism includes gear portions (3c) formed on the shafts (3), a ring gear (4) rotatably supported in the housing (2) on the outer periphery of the axial ends of both shafts (3), and a carrier (5) rotatably supported coaxially with the ring gear (4) in the outside of the housing (2). When the carrier (5) is driven, the ring gear (4) rotates because of the magnetic action between magnet portions (4b, 5b), and the shafts (3) rotates because of the meshing of the gear portions (3c, 4a). Since the inside of the housing can be sealed, airtightness can be assured.

Abstract: A device is provided with which it is possible to produce poly(methyl methacrylate) bone-cement paste, which is degassed to the greatest extent possible, while avoiding large-volume mixing containers and large cement volumes contained therein. The device includes a tubular hollow body (10) having a first opening (30) on the input side and a second opening (20) on the output side, at least one rotatably-mounted shaft (40) arranged in the axial direction in the tubular hollow body (10), thread turns (50) arranged axially along the outer side of the shaft (40), wherein the shaft (40) has at least one section with thread turns (50) whose pitch decreases in the direction of the second opening (20), at least one stirring blade (60) arranged on the shaft (40), and rigid mixing elements (70) arranged on the inner side of the tubular hollow body (10).

Abstract: An adhesive composition contains a block copolymer hot melt adhesive and a vapor releasing vapor corrosion inhibitor mixed with the block copolymer hot melt adhesive, the vapor corrosion inhibitor being in the form of particles suspended in the adhesive composition, the particles preferably having a maximum dimension of less than about 30 microns. One improvement results from inclusion in the adhesive mixture of a titanium and/or zirconium containing coupling agent, either separately or as part of the VCI particles. Another improvement results from blending the adhesive mixture in a continuous process using for example a twin screw extruder. As a result, the adhesive mixture has better uniformity and superior viscosity properties during use.

Abstract: Provided is a method of manufacturing a resin kneaded product in which an extrusion amount of a material can be increased and by which vent-up at an opening can be suppressed while spouting out of an unmelted material at the opening can be suppressed. A method of manufacturing a resin kneaded product includes kneading a material containing an additive (a) and a thermoplastic resin (b) using a twin screw extruder, in which the twin screw extruder is equipped with a supply port, a discharge port, an opening present between the supply port and the discharge port, a kneading section A present between the supply port and the opening, and a kneading section B present between the opening and the discharge port, a ratio L1 (La/D) of a length La of the kneading section A to a screw diameter D satisfies L1?3, and the material is kneaded in the kneading section A without being completely filled and the material is also kneaded in the kneading section B.

Abstract: Disclosed is an apparatus for processing plastics, having a mixing implement rotatable around an axis of rotation, wherein, in a side wall, an aperture is formed, through which the plastics material is removed, a conveyor being provided, with a screw rotating in a housing wherein the imaginary continuation of the longitudinal axis of the conveyor in a direction opposite to the direction of conveying passes the axis of rotation, and on the outflow side, an offset distance between the longitudinal axis and the radial that is parallel to the longitudinal axis, and the diameter D of the container has the following relationship to the diameter d of the screw: D=10·3?{square root over (K·d2)}, where D is the internal diameter in mm of the container d is the diameter in mm of the screw and K is a constant which is in the range from 60 to 180.

Abstract: A twin screw extruder includes a barrel having a chamber, a discharge port, an extrusion molding die coupled to the discharge port of the barrel, axially extending first and second screw shafts, and a screw shaft support. The screw shaft support includes first and second spacer bearings disposed on the first and second screw shafts, and a first cross member including first and second loops slidably coupled to the first and second spacer bearings. A second cross member is spaced apart from the first cross member by a connection member, and also includes first and second loops slidably coupled to the first and second spacer bearings. The connection member is situated between the first spacer bearing and the second spacer bearing, and connected to the first cross member and the second cross member.

Abstract: Disclosed in an apparatus for the processing of plastics, with a container with a rotatable mixing implement, wherein a conveyor being provided, with a screw rotating in a housing, wherein the imaginary continuation of the longitudinal axis of the conveyor in a direction opposite to the direction of conveying passes the axis of rotation, there being, on the outflow side, an offset distance between the longitudinal axis and the radius that is parallel to the longitudinal axis, and wherein the smallest possible distance (ms) between the implement and screw is described by the following relationship: ms?k*d+K, where d is the diameter of the screw in mm, K is a factor in the range from 20 to 100, more particularly 20 to 80, k is a factor in the range from 0.03 to 0.4, more particularly 0.04 to 0.25.

Abstract: A resin composition containing fine paper powder used in molding is obtained by using a non-intermeshing type counter-rotating twin-screw kneading extruder (10) having rotor units (11b, 12b) disposed in at least a part of screws (11, 12), respectively, to knead a raw material containing a fine paper powder of an average particle diameter of 10 to 100 ?m from 20 to 70 parts by weight, and a thermoplastic resin from 30 to 80 parts by weight, with a sum of the fine paper powder and the thermoplastic resin being 100 parts by weight, at a temperature of no more than 210° C.

Abstract: Disclosed is an apparatus for the processing of plastics, with a container with a rotatable mixing, wherein, in a side wall, an aperture is formed, and a conveyor being provided, with a screw rotating in a housing, wherein the imaginary continuation of the longitudinal axis of the conveyor in a direction opposite to the direction of conveying passes the axis of rotation, and wherein the radial distance (mb) between the implement and the inner surface of the side wall of the container is in the range from 15 mm to 120 mm, and complies with the following relationship: mb=k*DB where DB . . . is the internal diameter of the container in mm and k . . . is a constant in the range from 0.006 to 0.16.

Abstract: The invention relates to a twin screw extruder for preparing a polymeric solution. The extruder includes an elongated housing having an inlet end, an outlet end, an extruder shaft length L and a pair of interconnecting bores disposed within the housing, a pair of elongated extruder shafts, each having an axis of rotation, the pair of elongated extruder shafts disposed within the pair of interconnecting bores and drivable in at least one direction of rotation, a plurality of extruder screw segments positioned along the pair of elongated extruder shafts in a fixed angular relationship therewith, the plurality of extruder screw segments selected to form multiple extruder stages. The invention also relates to a process for extruding a mixture of polymer and diluent.

Abstract: A kneading segment includes plural wing portions integrally formed along an axis such that angles, around the axis, of the plural wing portions are shifted. At a part of a leading end of each wing portion where a wing leading end surface and a wing surface connect with each other, a first flow surface facilitates flow of material between the wing leading end surface and the wing surface. At a part of a base end of each wing portion where a wing surface and a wing side surface of another wing portion adjacent to each wing portion connect with each other, a second flow surface facilitates flow of material between the wing surface and the wing side surface. Since such a configuration prevents material from staying between parallel kneading segments, impurities are prevented and will not mix into normally kneaded material.

Abstract: In production of electrode paste, powder and solvent are separately injected into a hollow exterior component, the powder and the solvent are transferred to a downstream side in a transfer direction by rotation of two rotary shafts supported by the exterior component in a state where the rotary shafts are located parallel to each other at a predetermined interval, a mixture is produced by mixing the powder and the solvent by rotation of the rotary shafts without applying a shearing force, which is higher than or equal to a predetermined shearing force, to the powder, and producing electrode paste by kneading the mixture through application of a shearing force, which is higher than the shearing force that is applied in the mixing step, to the mixture through rotation of the rotary shafts.

Abstract: A counter-rotating twin screw extruder includes a motor that generates power through speed reduction of a gear box to directly or indirectly drive two symmetric screw shafts inside an enclosure barrel for synchronous but opposite rotations. Each screw shaft is fit with at least one section of screw and the two screws forms screw flight that are set in opposite directions and alternating each other. The barrel contains therein at least one flow restriction die. A bearing box is set between the barrel and the gear box. The purpose is to reduce unnecessarily induced mechanical energy during the conveyance of material and the advantages of using an independent bearing box are that manufacturing costs are reduced and consumption of energy is cut down. Parts wearing is reduced and durability is enhanced to eventually realize carbon reduction and energy saving.

Abstract: A screw machine, in particular an extruder, has a housing which has a supply opening at a supply end. At least one bore with a longitudinal axis is provided, in which a screw shaft is rotatably arranged. The drive takes place by means of a drive motor using a gear, the output shaft of which has a rotary drive connection to the screw shaft. Provided between the housing and the gear is a slide connection, which allows a displacement of the housing relative to the gear in the direction of the longitudinal axis.

Abstract: A mixing apparatus for manufacturing a rubber compound is disclosed. The mixing apparatus comprises a plurality of multiple shaft extruder devices, each comprising at least one inlet for receiving a plurality of materials to be fed into the extruder device and an outlet for discharging a mixed material extruded by the extruder device. The multiple shaft extruder devices are either arranged in such a way that operatively the extrudate of at least one of the plurality of multiple shaft extruder devices can be fed into the inlet of at least one other of plurality of multiple shaft extruder devices, or are arranged to operate in parallel in such a way that operatively the extrudates of the plurality of multiple shaft extruder devices can be fed together into the inlet of at least one further mixing device.

Abstract: A process of manufacturing a rubber compound is disclosed. The process comprises providing a multiple shaft extruder device; feeding the multiple shaft extruder device with at least one polymer raw material or with a mixture of at least two different polymer raw materials; feeding the multiple shaft extruder device with at least one further raw material; mixing the at least one polymer raw material or the mixture of the different polymer raw materials and the at least one further raw material in the multiple shaft extruder device to prepare a rubber compound; and extruding the rubber compound from the multiple shaft extruder device. A plurality of multiple shaft extruder devices may be used in parallel or in sequence.

Abstract: A remelting type thread element for a parallel dual-screw extruder and a method for manufacturing the same are disclosed. The thread element includes a body (101) and a nickel-based tungsten carbide spray welding layer (102). Wherein, the nickel-based tungsten carbide spray welding layer is uniformly and eccentrically remelted on the external surface of the body. The manufacturing method comprises a steel billet casting process, a spray welding process, a remelting process and a machining process. The wearing resistance and corrosion resistance of the thread element are superior to the property of the domestic high-speed tool steel; it has reasonable structure, advanced process and low cost. The thread element has high property and price ratio, better social and economic benefit, and wide popularization and application value.

Abstract: A resin composition containing fine paper powder used in molding is obtained by using a non-intermeshing type counter-rotating twin-screw kneading extruder (10) having rotor units (11b, 12b) disposed in at least a part of screws (11, 12), respectively, to knead a raw material containing a fine paper powder of an average particle diameter of 10 to 100 ?m from 20 to 70 parts by weight, and a thermoplastic resin from 30 to 80 parts by weight, with a sum of the fine paper powder and the thermoplastic resin being 100 parts by weight, at a temperature of no more than 210° C.

Abstract: Improved single screw extruders systems (40) are provided including a single screw extruder (42, 92) as well as an upstream preconditioner (44). The extruders (42, 92) include a single, internal, elongated, helically flighted, axially rotatable screw assembly (52) having one or more improved screw sections (74, 74a, 76). The screw sections (74, 74a, 76) include specially configured flighting (86) wherein adjacent flighting portions (86a, 86b) have smoothly arcuate surfaces (88) extending between the respective flighting portion peripheries (90a, 90b). This flighting design provides smooth, substantially surge-free operation while increasing SME and cook values. The preferred preconditioner (44) has independently controlled mixing shafts (106, 108) allowing the shafts (106, 108) to be rotated at different rotational speeds and/or directions.

Abstract: A kneading apparatus includes a barrel having a cylindrical chamber; a screw assembly rotating in the chamber so that a material to be kneaded is extruded in the axial direction by the rotation, the screw assembly including a screw section having helical blades and a kneading blade section in order to allow the material to flow into the clearance between the inner wall of the chamber and the kneading blade section, and to apply shearing forces to the material; a metering feeder for feeding the material at a substantially constant volumetric or gravimetric rate into the chamber; an injecting device for injecting a heat-removing medium into the chamber; and a discharging device for separating the heat-removing medium from the material and discharging the heat-removing medium from the chamber. A kneading method using the kneading apparatus is also disclosed.

Abstract: In an extruder wherein the slip-on elements (1) have a cross-sectional profile comprising circular arcs corresponding to the maximum slip-on element diameter, the slip-on element core diameter and the center distance of the slip-on elements (1), the slip-on element (1) has no shaft-to-hub connection in the area of the circular arc corresponding to the slip-on element core diameter and/or it is provided at its ends with reinforcement segments (13, 14).

Abstract: A screw extruder having a body forming a chamber of two barrels housing two counter-rotating axis-parallel rotors, a supply port for the material to be mixed in the chamber at one end of the body, a discharge port for discharging the mixed material at the other end of the body, a conveying section with screws for feeding the material from the supply port downstream to a mixing section which comprises at least two mixing zones, each mixing zone having at least one forward-conveying wing and at least one backward-conveying wing downstream of the forward-conveying wing on each rotor characterized in that a throttle valve is provided in the chamber downstream of the mixing section, and downstream of the throttle valve a second conveying section with screws and a second mixing section are provided.

Abstract: An apparatus and method for melting polymer is provided. In at least one embodiment, the apparatus includes a housing, two or more rotatable members at least partially contained within the housing, where each rotatable member having a shaft coupled thereto. The apparatus also includes a motor having a drive shaft directly coupled to the shaft of the rotatable members such that the rotatable members rotate at a speed of the motor drive shaft. The rotatable members are preferably non-intermeshing and counter-rotating.

Abstract: The present invention is directed to a materials extrusion device including a screw extruder with a plunger feeder. It includes a screw extruder having a main housing, a materials advancing screw, a screw drive mechanism, a feed port for inputting materials to be extruded and an extrusion outlet port. It also includes a plunger feeder having an elongated, upwardly biased (non-horizontal) plunger housing, e.g., a cylinder, with a plunger. A plunger drive mechanism is connected to the plunger to move the plunger upwardly and downwardly within the plunger housing, and there is a feed outlet at an upper end of the plunger housing, the feed outlet being connected to the screw extruder feed port.

Abstract: An improved multiple-screw extruder, in particular a twin-screw extruder comprises a housing. Several housing bores are located in at least one section within the housing. The housing bores overlap at least along a partial axial length of the housing. One extruder screw is arranged in each of the several housing bores. At least two motors are provided for the at least two extruder screws. A synchronizing and torsion transmitting device, by means of which both cooperating extruder screws can be synchronized, is provided on both the inlet side and the discharge side.

Abstract: The invention relates to novel screw elements for multi-screw extruders with screw profiles co-rotating in pairs and being fully self-wiping in pairs, to the use of the screw elements in multi-screw extruders and to a process for extruding plastic compositions.

Abstract: An apparatus and method for melting polymer is provided. In at least one embodiment, the apparatus includes a housing, two or more rotatable members at least partially contained within the housing, where each rotatable member having a shaft coupled thereto. The apparatus also includes a motor having a drive shaft directly coupled to the shaft of the rotatable members such that the rotatable members rotate at a speed of the motor drive shaft. The rotatable members are preferably non-intermeshing and counter-rotating.

Abstract: The invention provides a golf ball material which is a resin mixture composed of (a) an olefin-unsaturated carboxylic acid copolymer and/or an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester copolymer having a weight-average molecular weight (Mw) of from 120,000 to 200,000 and a weight-average molecular weight (Mw) to number-average molecular weight (Mn) ratio of from 4.3 to 6.6 or a metal neutralization product thereof, (b) an olefin-unsaturated carboxylic acid copolymer and/or an olefin-unsaturated carboxylic acid-unsaturated carboxylic acid ester copolymer having a weight-average molecular weight (Mw) of from 120,000 to 200,000 and a weight-average molecular weight (Mw) to number-average molecular weight (Mn) ratio of from 6.8 to 9.

Abstract: A device for mixing and/or kneading food products. The device includes a container having an inlet, an outlet, and at least one rotary shaft extending substantially in a longitudinal direction of the container. The at least one rotary shaft includes at least one tool, the at least one tool including at least one bar connected to the at least one rotary shaft via spacers. The at least one rotary shaft further includes an operative area to continuously mix and/or knead the food products, the operative area extending in a longitudinal direction of the at least one rotary shaft.

Abstract: Methods of extruding polyurethane composite materials are described. One method includes introducing at least one polyol and inorganic filler to a first conveying section of the extruder, transferring the at least one polyol and inorganic filler to a first mixing section of an extruder, mixing the at least one polyol and the inorganic filler in the first mixing section, transferring the mixed at least one polyol and inorganic filler to a second conveying section of the extruder, introducing a di- or poly-isocyanate to the second conveying section, transferring the mixed at least one polyol and inorganic filler and the di- or poly-isocyanate to a second mixing section, mixing the mixed at least one polyol and inorganic filler with the di- or poly-isocyanate in the second mixing section of the extruder to provide a composite mixture, and transferring the composite mixture to an output end of the extruder. Other related methods are also described.

Abstract: A device for processing a polymer material including a first screw having a first length; and a second screw having a second length different from the first length, wherein the first screw is configured to be rotated at one of a direction and a speed of rotation that is independent from a respective speed or rotation of the second screw.

Abstract: A multi-shaft extruder has between an exterior housing (9) and an interior housing (10) at least six worm shafts (4) disposed in a circle (7). The drive (1) of the multi-shaft extruder has two pinion shafts (2) which are partitioned into groups of identical design and disposed on a circle (7), the pinion shafts being radially driven from the inside and from the outside at equal forces and in the same direction and in diametrical opposition and coaxially connected to the worm shafts (4) of the process part (5) via couplings (3), the worm shafts (4) having a feed length (L) of at least six Do and a Do/Di ratio of 1.5 to 1.93, wherein Do is the outside diameter and Di is the inside diameter of the feed screws (11, 12, 13) and the torque density of the extruder is at least 50 Nm/cm3.

Abstract: In a continuous mixer, a chamber formed in a barrel comprising a feed port for feeding raw material to be mixed on one end side and a discharge port for discharging mixed material on the other end side. A pair of screw provided in the chamber has a feed part for conveying raw material to be mixed which is fed through the feed port and a mixing part for mixing the raw material. The barrel is provided with a raw material discharge port for communicating the position corresponding to the feed part in the chamber to the outside of the barrel, and an opening/closing cover for freely opening and closing the raw material discharge port. The screw can be rotated reversibly. Even though large amounts of raw materials to be mixed may stay in the chamber due to an emergency stop, the raw materials can be easily discharged from the raw material discharge port.

Abstract: A kneading disk has a plurality of disk elements having flight tips arranged at a helix angle ? 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 dispersion and distribution without having any excessive temperature elevation in approximately three kinds of streams, i.e. its main streams flowing along the flight tips, its back streams through the clearances and its tip riding streams flowing over the flight tips.

Abstract: In an extruder wherein the slip-on elements (1) have a cross-sectional profile comprising circular arcs corresponding to the maximum slip-on element diameter, the slip-on element core diameter and the center distance of the slip-on elements (1), the slip-on element (1) has no shaft-to-hub connection in the area of the circular arc corresponding to the slip-on element core diameter and/or it is provided at its ends with reinforcement segments (13, 14).

Abstract: A screw extruder having a body forming a chamber of two barrels housing two counter-rotating axis-parallel rotors, a supply port for the material to be mixed in the chamber at one end of the body, a discharge port for discharging the mixed material at the other end of the body, a conveying section with screws for feeding the material from the supply port downstream to a mixing section which comprises at least two mixing zones, each mixing zone having at least one forward-conveying wing and at least one backward-conveying wing downstream of the forward-conveying wing on each rotor characterized in that a throttle valve is provided in the chamber downstream of the mixing section, and downstream of the throttle valve a second conveying section with screws and a second mixing section are provided.

Abstract: An internal mixer for kneading plastic materials, particularly synthetic materials, caoutchouc or rubber mixtures includes a housing with a mixing chamber, two rotors which are driveable in opposite directions and are arranged in the mixing chamber with parallel axes. The rotors have non-meshing rotor bodies, wherein each rotor body has four helically mixing wings which at one end thereof define a front passage to the corresponding front wall of the housing. Each rotor body has for helically extending mixing wings which are successively oppositely arranged on the circumference, wherein the mixing wings extend at least over half the axial length of the mixing chamber, and wherein the mixing wings define at one end thereof a front passage to the corresponding front wall of the housing.

Abstract: The invention concerns an extruder for producing molted plastic materials from plastic granules available on the market, by heating and mixing granules, with heated single- or double-screw extruders, and for carrying out polycondensation or polymerization using part of a multiple-screw extruder and by means of vacuum chambers for removing the constituents of low molecular weight and/or foaming agents or the like, for obtaining larger molecules and hence a higher viscosity, and for increasing the mechanical strength of plastic materials produced from said molten material. The invention aims at designing said extruder such that the molten material can be processed in thin layers enabling exposure of large surfaces in contact with the vacuum, and hence a molten plastic material ensuring desired levels of degassing and polymerization using simple means.

Abstract: 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 to be rotatably driven by the stator. The rotor surrounds the drive shafts, and each of the drive shafts is independently connected to the rotor for driving thereby.

Abstract: In a continuous mixer, a chamber formed in a barrel comprising a feed port for feeding raw material to be mixed on one end side and a discharge port for discharging mixed material on the other end side. A pair of screw provided in the chamber has a feed part for conveying raw material to be mixed which is fed through the feed port and a mixing part for mixing the raw material. The barrel is provided with a raw material discharge port for communicating the position corresponding to the feed part in the chamber to the outside of the barrel, and an opening/closing cover for freely opening and closing the raw material discharge port. The screw can be rotated reversibly. Even though large amounts of raw materials to be mixed may stay in the chamber due to an emergency stop, the raw materials can be easily discharged from the raw material discharge port.

Abstract: Each mixing rotor for a batch mixer is rotatably insertable into a mixing chamber such that tip clearances are defined between tips of mixing blades and an inner surface of a mixing chamber and is provided on its outer circumferential surface with a plurality of mixing blades for imparting shearing forces to a material to be mixed by causing the material to pass through the tip clearances. The plurality of mixing blades include a nonlinear blade which is substantially nonlinear from a start point to a terminal point in a development of the mixing rotor developed into a plane about its longitudinal axis, and other linear blades which are linear in the development and whose helix angle to the longitudinal axis of the mixing rotor is set at 15 to 35°. An appropriate mixing control capable of realizing both sufficient mixing and sufficient dispersion can be executed by mixing and dispersing the material in a well-balanced manner by means of the mixing rotor.

Abstract: A cylinder assembly for a twin-screw extruder includes a cylinder forming an extrusion space and a hollow-cylinder mantle surrounding the cylinder and having a smooth inner surface. At least one channel is made in the shape of a helix in the longitudinal direction on the outside of the cylinder. The at least one channel is connected to an intake and outlet for conducting a tempering medium. The at least one channel is made by a winding-vortex process and the at least one channel is closed by the hollow-cylinder mantle. The cycle depth of the at least one channel in the radial direction changes over the circumference of the cylinder such that it is greatest in regions where the original wall thickness of the cylinder is greatest, and that it is smallest in the regions where the original wall thickness of the cylinder is also smallest.

Abstract: A method for evaluating and controlling a mixing process for polymer-based compounds includes the steps: obtaining initial starting conditions and values for viscosity dependent parameters; increasing batch temperature by a differential amount; calculating mixing parameters such as batch temperature, dispersion, viscosity, and torque based upon fundamental kinetic, thermodynamic, and Theological models; determining whether an endpoint or end points of one or more mixing parameters has been achieved; and changing one or more conditions so as to achieve the desired endpoint(s).