Abstract: 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 pressing screw portion (410) having a first lead (411) and a dispersing screw portion (420) having a second lead (421) adjacent to a forward end (412) of the pressing screw portion (410). The second lead (421) is formed in such a manner that the rear ends of all the second lead surfaces (426) at the rear end (422) of the dispersing screw portion (420) and the forward end of the first lead surface (416) at the forward end (412) of the pressing screw portion (410) are displaced from each other.

Abstract: The present invention relates to a method for making highly homogenized cellulose solution, wherein the cellulose solution is obtained by obtaining a solidified N-methylmorphorine-N-oxide (hereinafter, referred to as ‘NMMO’) hydrates which is solidified a liquid-state NMMO hydrates comprising 10 to 18% by weight water by using a simple screw-type feeder and by controlling the temperature, feeding the solidified NMMO into a twin-screw type extruder continuously, obtaining a cellulose solution which is fully swelled in a few minutes by dispersing and mixing with cellulose powder in the twin-screw type extruder, and extruding a highly homogenized cellulose solution by feeding the obtained cellulose solution into a melting zone of the extruder to melting the cellulose solution in a few minutes by minimum heat and shear force.

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: 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 from the first extruder in a second single shaft reciprocating extruder. Another continuous process of preparing a heat-vulcanizable filled silicone composition, comprises forming a premix? of filler and high viscosity silicone polymer; mixing the premix and additional high viscosity silicone polymer continuously in a co-rotating intermeshing twin screw extruder; and compounding a filler and silicone polymer mixture from the co-rotating intermeshing twin screw extruder in a second single shaft reciprocating extruder.

Abstract: An extruder includes a material feeding device feeding into a radial pump unit. The radial pump unit includes conical screws which are adjacently positioned and rotate in the same direction. The radial pump unit transfers an annular flow of the material into the extruder's nozzle. Additional material can be supplied into the product through the radial pump unit.

Abstract: A method and apparatus for converting liquid alloy into its thixotropic state and for fabricating high integrity components by injecting subsequently the thixotropic alloy into a die cavity. The apparatus includes a liquid metal feeder, a high shear twin-screw extruder, a shot assembly and a central control system. The apparatus and method can offer net-shaped components characterized by close to zero porosity, fine and equiaxed particles with a uniform distribution in the eutectic matrix, and a large range of solid volume fractions.

Abstract: The invention relates to a compounder comprising a mixing unit, which can be mechanically driven by a drive module and is provided with one or more feed devices (5) for the material to be processed and one or more additives that are to be mixed with this material. The mixing unit is located in a supporting frame configured as a three-dimensional framework, and the supply and discharge lines required to operate the mixing unit, for the material being processed, and auxiliary materials or operational materials and energy as well as for the measurement, control and regulation technologies are substantially completely installed in or on the supporting frame and are connected to the mixing unit. The supporting frame is configured both as a transport frame for transporting the compounder to the job site and as a mounting frame for the placement of the operational compounder on a substructure at the job site.

Abstract: A treatment material agitating and processing apparatus comprises a casing (1) having a supply inlet (13) and a delivery outlet (12) provided therein, an agitator (2) of a screw form arranged to extend lengthwise in the casing (1), and a driving mechanism (3) for driving the agitator (2) to rotate in the casing (1). The agitator (2) repeats a given pattern of its forward and backward rotating actions thus to agitate and convey the treatment material (A) throughout the casing (1). Accordingly, while the duration of the treatment material (A) staying in the casing is favorably determined by the pattern of the forward and backward rotating actions of the agitator (2), the agitated effect of the treatment material (A) can be preset to a desired level by adjusting the rotating speed of the agitator (2).

Abstract: An extruder for polymer melts, with an extrusion space arranged in an extruder barrel and through which at least one extruder screw shank extends so that it can be rotated by a motor. The screw shank has at least one section in the form of a cylinder casing, the extrusion space having at least one barrel section which surrounds the cylinder casing in an essentially equidistant manner to form an encircling gap as a restricted flow zone (blister), in particular to set the pressure of the melt. The clearance of the encircling gap at the restricted flow zone can be changed in a specifically selective manner by externally adjustable force, with elastic deformation of the inside surface of the extrusion space and/or of the surface of the screw shank, by a hydraulic pressure chamber provided in the region of the restricted flow zone in the wall of the barrel section and/or in the least one screw shank.

Abstract: An extrusion apparatus is provided having an extrusion worm with a threaded exterior passage and rotatably driven by a drive shaft operatively couplable with a drive motor for driving rotation of the drive shaft. A feed in device feeds to the extrusion apparatus material that is to be extruded. The extrusion device includes a socket having a threaded interior passage, the socket receiving therein the extrusion worm in at least partial axial overlap such that material to be extruded passes between and in contact with the threaded exterior passage of the extrusion worm and with the threaded interior passage of the socket. The rate of rotation of the socket and the rate of rotation of the extrusion worm are independently adjustable relative to one another.

Abstract: An apparatus for injection molding two compatible polymeric materials, in which two substantially coaxial extrusion screws are used to plasticize the two materials into a common accumulation space. The charge comprising multiple layers of material is then injected into a closed mold by means of forward axial motion of the outer screw with respect to its enclosing barrel. Once inside the mold, the first material forms a skin layer totally or partially surrounding the other material. In this way a part having a plurality of material properties may be produced in a single operation.

Abstract: A procedure to continuously produce a suspension of cellulose in aqueous N-methylmorpholine-N-oxide is characterized in that: (a) The cellulose is conveyed through a first shearing zone in the absence of N-methylmorpholine-N-oxide and is homogenized, and (b) the homogenized cellulose is conveyed through a second shearing zone after adding enough aqueous N-methylmorpholine-N-oxide for a suspension to result in a N-methylmorpholine-N-oxide content in the liquid phase of 70-80 weight percent after mixing, whereby the cellulose or suspension almost completely fills the available content cross-section in the shearing zones.

Abstract: 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, for kneading the material by shearing the material in tip clearances and a wedge-shaped space between an inside wall of the chamber and the kneading blade sections. The tip clearance becomes narrower from the upstream side to the downstream side in the direction of extrusion of the material. The kneading apparatus, which performs a continuous kneading operation, makes it possible to set proper kneading conditions in accordance with changes in the state of a material being continuously kneaded, and achieves high kneading efficiency.

Abstract: An extrusion method and an extruder, the material to be extruded being fed with a material feeding device (1) into a radial pump unit included in the equipment. The radial pump unit comprises conical gearwheels (2) which are adjacently positioned and rotate in opposite directions. The radial pump unit transfers the material in an annular flow into the extruder's nozzle (4). Additional material (20) can be supplied into the product through the radial pump unit.

Abstract: A polymer is fed upstream into an extruder. The polymer is melted and mixed in a zone (A). Cellulosic fibres are fed into the extruder in a zone (B). A mixture of the polymer and the fibres obtained in zone (B) is transported through a degassing zone (C) and then through a pressure building zone (D). The mixture is released from zone (D) into a die. Each of zones (A), (C) and (D) includes at least one positive transportation screw element. The zone (B) includes at least one positive transportation screw element, at least one kneading section and at least one negative transportation screw element such that the cellulosic fibres are fibrillated to obtain cellulosic fibres with an aspect ratio as high as possible while simultaneously mixing the cellulosic fibres with the melted polymer.

Abstract: An extrusion apparatus is provided having an extrusion worm with a threaded exterior passage and rotatably driven by a drive shaft operatively couplable with a drive motor for driving rotation of the drive shaft. A feed in device for feeding in strip form material which is to be extruded is disposed relative to the rotational axis such that the material strips fed in by the feed in device are advanced substantially parallel to the rotational axis during rotation of the drive shaft and the extrusion worm.

Abstract: An extrusion apparatus is provided having an extrusion worm with a threaded exterior passage and rotatably driven by a drive shaft operatively couplable with a drive motor for driving rotation of the drive shaft. A feed in device feeds to the extrusion apparatus material that is to be extruded. The extrusion device includes a socket having a threaded interior passage, the socket receiving therein the extrusion worm in at least partial axial overlap such that material to be extruded passes between and in contact with the threaded exterior passage of the extrusion worm and with the threaded interior passage of the socket. The rate of rotation of the socket and the rate of rotation of the extrusion worm are independently adjustable relative to one another.

Abstract: In a continuous process for producing filler-containing silicone compositions (P), a silicone composition (E) comprising filler (F1) is mixed with filler (F2).

Abstract: The present invention provides a process for continuous production of pigment flushes and an apparatus for carrying out the process. In the process of the invention, the pigment press cake is first fluidized. The fluidized press cake and a hydrophobic liquid organic medium are fed into a twin screw extruder. The kneading of the organic medium and press cake between the twin screws flushes the pigment into the organic medium. The water phase and flushed pigment phase are separated by removing at least part of the water phase through a vent in the extruder. An impediment to the flow of material downstream of the water vent causes the flush to accumulate in the vented section for a period of time sufficient to remove the desired amount of the water phase. The flush works over the impediment and passes downstream to where vacuum is applied to remove residual water from the flush. The flush may be further combined with other ink ingredients to form an ink product.

Abstract: A continuous mixer in which a pair of left and right rotors 4 are rotatably inserted into a chamber 2 having a feed port 13 and a discharge port 14 for materials at both axial ends, respectively, a gate device 17 for adjusting the polymer flow resistance of the materials is provided halfway in the axial direction of the chamber 2, and a first and a second mixing portions 19, 21 are formed at portions, respectively, of the rotors 4 positioned upstream and downstream of the gate device 17, wherein a forced feed means 23 for forcibly post-adding the materials is connected to a portion downstream of the gate device 17 in the chamber 2 and upstream of the discharge port 15.

Abstract: The present invention provides a process for continuous production of pigment flushes and an apparatus for carrying out the process. In the process of the invention, the pigment press cake is first fluidized. The fluidized press cake and a hydrophobic liquid organic medium are fed into a twin screw extruder. The kneading of the organic medium and press cake between the twin screws flushes the pigment into the organic medium. The water phase and flushed pigment phase are separated by removing at least part of the water phase through a vent in the extruder. An impediment to the flow of material downstream of the water vent causes the flush to accumulate in the vented section for a period of time sufficient to remove the desired amount of the water phase. The flush works over the impediment and passes downstream to where vacuum is applied to remove residual water from the flush. The flush may be further combined with other ink ingredients to form an ink product.

Abstract: A method of and device for removing a liquid from a resin of high melting point by means of a co-rotating twin extruder and an operation system of a liquid removal molding of a resin of high melting point by which a scaled down, highly effective, high performance and continuous stable operation of the device may be achieved.

Abstract: A machine for continuous processing of flowable materials has at least one shaft (4) with worm or similar processing elements (9, 15, 16). The housing (1) has at least one material inlet (14) at one end and at least one material outlet at the other end. The housing (1) is further provided with a flange (22) to which the driving member (8) is fastened with tension rods (28). The flange (22) is disposed so as to form between it and the driving member (8) a housing portion (13) with the material inlet (14) which is largely relieved of tensile forces. In order to also relieve the housing portion (13) of torques, the flange (22) is in addition connected so as to rotate in unison with a frame (27) to which the driving member (8) is fastened.

Abstract: A method for making a product to be extruded and an extruder. The extruder has at least two conical stators and at least one conical rotor placed rotatably between the stators. The extruder further has supply conduits for feeding the material to be extruded separately into the exterior and interior of the rotor. Each supply conduit is provided with a separately adjustable feeding device by means of which the amount of material flow to be supplied can be adjusted. The degree to which the space between the rotor and the stator is filled and the amount of the heat generated by friction can be regulated. Further, the ratio of the material flows in the different supply conduits determines the ratio of the thickness of the layers obtained. The method and extruder according to the invention make it possible to regulate the properties of a final product easily and in several different ways.

Abstract: In a twin extruder wherein an underwater cutting apparatus 12 is connected, via a gear pump 9, to an discharge port 8 of a cylinder 1 which houses therein twin screws both ends of which are supported, both sides of both screws 2, 3 are material conveying sections 5a, 5b having flights of small lead, the downstream sides of the respective material conveying sections 5a, 5b are kneading sections 6a, 6b having flights of large lead, both kneading sections 6a, 6b are connected about the center of the screws 2, 3, and the cylinder 1 positioned at the center of the screws 2, 3 is provided with the discharge port 8.

Abstract: A method of mixing first and second molding components in a non-intermeshing twin screw compounder having a discharge opening wherein the first component is added around a first of the two rotating screws at a point remote from the discharge opening, the second component is added around the first screw nearer the discharge opening, vacuum is applied to the mixing components nearer the discharge opening, rotation of the two screws is stopped, and the second screw is axially moved toward the discharge opening to eject mixed components from the compounder and into a female mold.

Abstract: A process for producing a polyoxymethylene using a reactor having a discharging port having a weir, which process comprises introducing trioxane or a mixture of trioxane and a compound reactive therewith into the reactor from its feeding port and continuously recovering the powdery polyoxymethylene formed, from said discharging port having a weir. Owing to the presence of the weir, the residence time of reaction mixture in reactor is long, making high the conversion of the monomer.

Abstract: A mixer in particular for viscous elastic materials has a processing channel having an outlet opening at one end which can be closed. The materials can be transported and simultaneously mixed along the processing channel using a a transport device. A feedback channel branches off from the processing channel near the outlet end and feeds back into the processing channel at an upstream location so that the material mixture can be circulated though the processing channel and the feedback channel when the outlet opening is closed. In order to be able to measure rheological quantities of the mixture during the mixing procedure, the feedback channel is configured as a measurement path. Towards this end a pressure sensor device can be provided for in the feedback channel to measure the transport pressure in the transported material mixture at at least two mutually separated cross sectional locations of the feedback channel.

Abstract: A transmission for a high-output two-shaft extruder, comprising a speed-reduction gear (1) and a distribution gear (2). The distribution gear has one take-off shaft (4) driven directly by the speed-reduction gear and another take-off shaft (5) driven by the first take-off shaft in conjunction with two distributor shafts (11 & 12), one on each side. The speed-reduction gear is a planetary gear, its sun wheel (21) driven by a main motor and its ring (27) by a superimposition motor, and its planetary bearing (25) coupled to the distribution gear's first take-off shaft. The main motor operates at a constant speed and is designed to handle most of the total power demand. The superimposition motor is regulable or discontinuously variable in speed and is designed to handle a fraction of the total power demand.

Abstract: A multi-screw extruder consists of contra-rotating screws (20) inserted in a housing, whose flights (1) form intermeshing crests (2) and roots (3), and which have at least two axial sections (21, 22, 23) of flights each differing in number and pitch. To improve the manufacturing conditions, and to achieve uniform wear conditions over the screw length, adjacent axial sections (21, 22, 23) of a screw (20) verge into each other within an axial transition zone (24) free from annular grooves, where all roots (3) extend through the transition zone (24) while making turns (.alpha.) and forming ramifications or combinations (V), and at least one of the crests (2) begins or ends in the transition zone (24).

Abstract: In a method of carrying out continuous preparation processes on tightly meshing extruders rotating in the same sense such as twin-screw and multi-shaft screw-type extruders, the extruder is operated at a screw speed of rotation of at least 800 rpm, accompanied with a simultaneous increase of the so-called "torque density" (M.sub.d /a.sup.3) of at least 11 Nm/cm.sup.3 and a volumetric ratio (Da/Di) of at least 1.5.

Abstract: A method for continuous preparation of a high consistency or liquid silicone rubber base does not cause abrasive wear of the extruder screw and of the extruder cylinder or blackening of the silicone rubber base even when the latter is admixed with such fillers as an inorganic filler in the form of a diatomaceous earth powder, quartz or a similar large-grained and hard substance, or with a fumed silica, sedimentary silica, or a similar reinforcing silica filler. The method comprises continuously kneading the following components in a multiple-stage shear type single-screw extruder: (A) a freely-flowable powdered silicone rubber mixture having its main components in the form of (a) a cross-linkable polydiorganosiloxane with a viscosity exceeding 1.times.10.sup.5 mPa.multidot.s at 25.degree. C. and (b) an inorganic filler, and (B) a high consistency silicone rubber base having its main components in the form of (a) a cross-linkable polydiorganosiloxane with a viscosity exceeding 1.times.10.sup.5 mPa.multidot.

Abstract: A liquid silicone rubber base including (A) an alkenyl-containing organopolysiloxane, (B) a reinforcing silica filler, (C) a mixing assistant in the form of a silanol-containing compound, (E) an organohydrogen polysiloxane, (f) a platinum catalyst and optionally, (D) a wetting auxiliary catalyst is prepared by previously mixing 10-120 parts of component (A) with 1-35 parts of component (C) and 0-35 parts of component (D) to form a premix liquid, mixing the premix liquid with 100 parts of component (B) to form a premix power, and kneading the premix powder with the remainder of component (A). By adding a curing agent of organohydrogenpolysiloxane/platinum catalyst to the liquid silicone rubber base, there is obtained a liquid silicone rubber composition having improved fatigue endurance.

Abstract: Method for continuously mixing polymer materials by means of a continuous mixing machine having a mixing chamber provided with at least one opening for supplying the polymer and at least one mouth for discharging the mixture and having arranged inside it a pair of rotors parallel with one another, the method includes the stages of:supplying the material and any additives to the mixing chamber through the supply mouth; andmixing and feeding the materials towards the outlet, by pre-mixing performed by axial sections of rotors rotating tangentially with respect to one another, and subsequent mixing performed by axial sections of the rotors rotating in a mutually intermeshing manner.

Abstract: Machine with two generally converging threaded rotors (5) for the extrusion of plastomers, elastomers and the like, comprising a structure (1, 2, 3) supporting a housing (4) containing the rotors (5), a casing (6) containing a pair of reducers (7), a device (11) for generating the movement and devices (10) for synchronized transmission thereof to the two reducers (7), wherein said housing containing the rotors (5) and said casing (6) containing the reducers are rigidly fixed to the support structure (1, 2, 3) and integrally connected together via a housing (8) arranged between the two and containing first means (8a, 8c) for supporting the rotors (5), said rotors being formed in two separate parts (5a, 5b), removably joined to one another, said devices (10) for synchronized transmission of the movement being integral with the bottom part of the said casing (6) and having a high-speed shaft (12) arranged along an axis forming an angle with the axis of the associated rotor (5) and coaxial with the high-speed sha

Abstract: A polycondensation reactor for polyesters, polyamides or polyarylates, for example, in which a low viscosity material is introduced into the reactor and a relative high viscosity polymer exits the reactor. The reactor has at least two longitudinally intersecting cylindrical interior chambers, each with a rotating shaft through its length. Each shaft has a plurality of stirrers and spacers designed to wipe all interior surfaces of the reactor. The stirrers can be shaped as a cycloid or involute profile, for example. Generally the stirrers on each shaft are indexed from one another preferably by 90.degree. and intermesh with stirrers on the adjacent shaft. Stirring the low viscosity material by rotating the stirrers (on the shafts) spreads the material into a plurality of thin films. At the temperature and vacuum conditions of the reactor, a volatile component is removed, thus causing the material to polymerize, by condensation, forming a relatively high viscosity polymer.

Abstract: Machine for the extrusion of polymers and the like, comprising a pair of threaded rotors (5) with axes which are generally converging with respect to each other and means (7) for synchronized transmission of the movement to the said rotors (5), wherein each rotor (5) is made to rotate by means of its own actuating motor (8).

Abstract: Methods and apparatus are provided for the recovery of organic compounds from fibrous plant materials. Organic compounds which can be recovered from the fibrous plant materials include plant metabolites, such as arabinogalactan and phenols, which can be isolated from the wood, for example, of the Western Larch and Tamarack tree varieties. In addition to the recovery of organic compounds from wood, fibrous wood products also may be isolated, in the form of a clean fiber that can be used, for example, as raw material in wood processing applications or in the manufacture of high quality paper products. In one embodiment, a fibrous plant material first is compressed, to recover a liquid exudate and a first pressed plant fiber product. Optionally, the fibrous plant material, such as wood particles, is compressed in the substantial absence of any added solvent, to produce a pure normal liquid exudate and a first pressed plant product.

Abstract: An apparatus for degassing thermoplastic synthetic plastics material has a first screw section (11) for the intake of the material to be treated. The plasticized synthetic plastics material flows from the housing (10) of this screw section (11) through a connection channel (15) to a filter (16) and from there through an inflow opening (17) into the housing (18) of a second screw section (19) which conveys the material to an outlet (21). Between the two coaxial screw sections (11, 19), a sealing section (26) is disposed which avoids a by-pass of the filter (16). A baffle member (28) is disposed in front of the inflow opening (17) which forces the synthetic plastics material stream into a hose-formed shape. The baffle member (28) is displaceable with respect to the inflow opening (17) in axial direction and has a cross section which tapers towards the second screw section (19).

Abstract: The method for manufacturing rubber mixtures includes the steps of plasticizing batchwise rubber in a first inner kneader to produce a batch of plasticized rubber and transporting the batch of plasticized rubber, while still hot, into a second inner kneader. In the second kneader nonreactive additives are mixed into the batch of plasticized rubber.

Abstract: A screw for a double-screw extruder has its flight defining an outer cone and an inner cone of different convergencies with the inner cone converging more steeply than the outer cone from the feed end to the exit end of the extruder. Where A is the outer diameter at the feed end, B is the outer diameter at the exit end, C is the flight height at the feed end and D is the flight height at the exit end, the screw is defined by the relationship m.times.(A-B)/B=(C-D)/D where m is less than zero and greater than -0.75, the screw having a length L.gtoreq.15B.

Abstract: An apparatus for creating extrusions having an inner portion of one substance and an outer portion of another substance. The apparatus includes two bins that each receives a different type of material, two multi-paddle members for feeding material, an inner worm screw conveyor, an outer worm screw conveyor, a casing maintaining distinct materials within the worm screw conveyors while separated from one another, an electronic eye assembly for detecting the amount of material extruded, a material cutting mechanism, a replaceable nozzle, and two independent motors for driving the worm screw conveyors. In operation, the feeding members feed materials from the bins to the worm screw conveyors, which convey the material to the replaceable nozzle. The materials are expelled from the nozzle in such a way that one type of material forms an outer portion, and the other type of material forms an inner portion. The motors are coupled to the conveyors by gears allowing variation of the speed of conveying of materials.

Abstract: An apparatus provided for extruding a polymer in an extruder barrel having an upstream portion and a downstream portion with a discharge port. A hopper is positioned for delivering polymer to the upstream portion of the extruder barrel and a screw shaft is mounted for rotational movement in the extruder barrel. A drive means is connected for rotating the screw shaft. The screw shaft has a conveying screw flight and a metering screw flight arranged for conveying and metering the polymer through the barrel. A seal is provided for sealing against polymer flow and includes at least two different passageways positioned between a seal barrel and at least one seal shaft mounted for rotational movement within the seal barrel. The passageways are oriented to urge the polymer toward the screw shaft.

Abstract: An apparatus for the physiochemical treatment and reaction of material which includes a pair of conveying screws which convey the material from an inlet to an outlet and wherein the portion of the material is recycled through spaced openings between the screws and wherein the material is introduced from one screw to the other screw in such a manner that an air space is created between the threads of the other screw so that air may be provided to or taken from the material being conveyed.

Abstract: Disclosed herein in are a magnetic paint composed of a kneaded composition comprising fine magnetic iron based alloy particles, acicular fine magnetic iron oxide particles or plate-like fine magnetic ferrite particles, a binder resin and an organic solvent, the solid content of the fine magnetic iron based alloy particles, the acicular fine magnetic iron oxide particles or plate-like fine magnetic ferrite particles and the binder resin in the kneaded composition being from 65 to 85% by weight, the binder resin being from 5 to 30% by weight based on the fine magnetic iron based alloy particles, the acicular fine magnetic iron oxide particles or plate-like fine magnetic ferrite particles, and a gloss at 45.degree. after dispersion for 6 hours being not less than 120% when formed into a coating film; and a method of preparing the same.

Abstract: A planetary gear for a multiple-screw extruder includes a circular stationary housing having internal teeth, a sun wheel formed from at least one toothed portion of a spindle, and a plurality of main planet wheels formed from at least one toothed free end of a plurality of screws and arranged in a circle. The plurality of main planet wheels are spaced from one another, from the sun wheel and from the internal housing teeth. A plurality of internal and external intermediate planet wheels are arranged between the sun wheel and the main planet wheels and between the main planet wheels and the internal housing teeth, respectively.

Abstract: A mixer for viscous liquids and masses has a stationary first housing of circular cross section preferably disposed horizontally with inlet and outlet means for the material to be processed and surrounding a driven inner coaxial rotatably mounted second housing. The annular space jointly limited by the two housings with closing portions disposed on the faces contains a number of axially parallel mixer shafts driven in the same direction and disposed in a ring which perform a common revolving motion about the longitudinal axis of the housing. The mixer shafts extend with their envelopes as far as the inner and outer walls of the two housings leaving small gaps free. The mixer shafts formed as screw conveyors at least in portions are combined into meshing groups.

Abstract: A screw for a double-shaft extruding device having a shaft and a spiral flight provided at an outer periphery of the shaft. A height of the flight from an axis of the shaft is substantially constant. An angle of torsion of a spiral of the flight becomes smaller toward a shaft distal end. A cross-sectional area of extrusion formed by the shaft and the flight continuously increases from the shaft distal end to a shaft proximal end. Material can be smoothly discharged and completely extruded.

Abstract: An apparatus for continuously processing viscous liquids and masses has axially parallel satellite shafts (23) disposed in a ring within a housing (4) and driven in the same direction which bear meshing processing means (24) and are driven by a central shaft (17) bearing central gearwheels (19; 20). Each satellite shaft (23) bears two axially spaced coaxial pairs of pinions (27; 34), one pinion (28; 36) of each pair of pinions engaging a central gearwheel (19; 20) and the other pinion (29; 35) engaging the internal toothing of an annular gear (5; 9) fixed on the housing. The toothings of the pinions (28, 29) of one pair of pinions (27) are formed with a module which results in an integral number of teeth on the central gearwheel (19) or on the internal toothing of the annular gear (5) from satellite shaft (23) to satellite shaft (23). The central shaft (17) is supported on the annular gears (9, 10) only via the central gearwheels (19, 20) and the pinions (28, 29; 35, 36).

Abstract: In a cone type twin screw extruder, two rotor shafts are disposed in such a manner as to approach one another in the direction towards the leading edge, and to be rotatable. An interlocking device is provided on the side of the base portions of the rotor shafts for interlockingly connecting the rotor shafts with each other. The interlocking device has a pair of reduction gear devices disposed on the base portion sides of the rotor shafts, and the reduction gear is constituted of a spur gear train or a planetary gear train. High speed shafts of the reduction gears are interlockingly connected with bevel gear devices, and one shaft of the bevel gear device forms a connecting shaft projecting from the other bevel gear device side. Further, a pair of the connecting shafts are interlockingly connected with each other by a coupling device.