Abstract: A machine includes a liquid lubrication system and a shaft, the shaft being rotatable about a rotation axis, the shaft including a first part, a second part engaged coaxially with the first part, and a journal bearing between the first part and the second part, the first part being rotatable relative to the second part about the rotation axis, a helical feature disposed between the first part and the second part and configured to define a helical pump between the first part and the second part, the pump being hydraulically connected to the liquid lubrication system, the journal bearing being disposed adjacent to the helical feature.

Abstract: Various measures increase the cooling effect on a planetary roller extruder section/module. Those measures include a choke being arranged at an outlet of the planetary roller extruder section or module, a distance between centerlines of adjacent planetary spindles being at least equal to an outer diameter of the planetary spindles, providing a pressurized melt supply, having a cooling section composed of several sections/modules, providing at least one section/module in which a flow, during melt supply is converse to the conveying direction of the extruder, and providing cooling tubes arranged within the central spindle.

Abstract: An extruder screw for plasticizing at least one plastic or plastic mixture, including a melting zone, a shaft zone and a mixing zone arranged between the melting zone and the shaft zone, wherein a conveying flight is formed in the melting zone and in the shaft zone, which extends helically along a longitudinal axis of the screw, wherein a conveying flight of the melting zone ends at an end of the melting zone towards the mixing zone and a conveying flight of the shaft zone begins at an end towards the mixing zone. A flight depth of the melting zone continuously decreases along the longitudinal axis of the screw to the mixing zone. Further, an extrusion device having the extruder screw and to a method for plasticizing at least one plastic or plastic mixture.

Abstract: An apparatus for a high-throughput screw caster of a multi-component gradient metal material from elongate materials, such as multi-component alloy pipes, rods, profiles, and other such materials, has in the lengthwise direction a continuous gradient distribution of chemical components. The apparatus includes an online powder flow-rate regulation system, a rotary feed system, a heating system, a heat insulation system, a motor drive system, a blank forming system and a control system.

Abstract: A micro moulding machine and process for forming small plastic parts for the medical device industry. The machine adds heat in two steps to a precision sized plastic pellet and then displaces the entire pellet volume into the mould cavity. A substantial amount of heat is added to the pellet by forcing it through an orifice very near the gate of the mould. The pneumatic pressure to drive the pellet through the orifice is controlled to regulate the amount of heat introduced into the pellet.

Abstract: Systems, media, and methods for virtualized data compression are provided. For example, a stream of numbered sequences may be generated by transforming an input stream into a sequence of samples each having a predetermined amplitude and a predetermined length. An error correction protocol may be applied through an analysis of a number of bits. A compression routine may be implemented by choosing a number of threads and determining compression depth. The stream analyze may be analyzed utilizing independent component analysis. A specified compression routine may be executed. An output file size may be determined.

Abstract: An apparatus includes a syringe housing and a plunger slidably received within the syringe housing. A plunger magnet is secured to the plunger. A potentiometer housing is fixed to the syringe housing and includes a potentiometer disposed therein. A wiper magnet is also disposed within the potentiometer housing. Movement of the plunger magnet causes a corresponding movement of the wiper magnet.

Abstract: A thermoplastic composite structure is produced by extruding a bead of composite material to a desired cross sectional shape. An extruder extrudes the polymer bead containing reinforcing fibers, using a low compression first extruder stage where the polymer is mixed and de-gassed, and a high compression second stage where the polymer is consolidated and extruded. The cross sectional profile of the polymer bead may be altered using a variable extruder gate.

Abstract: Provided is technology that causes polybutylene terephthalate resin to react with a reactive compound and reduces the thermal decomposition of the polybutylene terephthalate resin, when performing reactive processing method using the polybutylene terephthalate resin. During production of polybutylene terephthalate resin pellets, the polybutylene terephthalate resin (A) and a reactive compound (B) that reacts with the polybutylene terephthalate resin (A) are reacted such that the difference between the intrinsic viscosity of a polybutylene terephthalate resin composition configuring the polybutylene terephthalate resin pellets and the intrinsic viscosity of a polybutylene terephthalate resin composition configuring a polybutylene terephthalate resin molded article is no more than 0.05 dL/g, and the amount of carboxylic group ends in the resin included in the polybutylene terephthalate resin pellets is adjusted so as to be no more than 25 meq/kg.

Abstract: The present invention relates to a process for the insertion and conveying of a labile additive, or a mixture thereof, in a transporting pipe, in which a main stream of molten material flows, said process characterized in that it incorporates said additive, or said mixture, in a portion of the pipe delimited by the main stream, according to one of the following alternative modes: a) in a longitudinal direction with respect to the flow direction of the main stream of molten material, or b) in a transversal direction with respect to the flow direction of the main stream of. molten material, or c) according to a composition of the longitudinal (a) and transversal (b) mode, thus forming a resulting stream which keeps the labile additives segregated from the main stream of molten material.

Abstract: A device stores, mixes, and applies polymethylmethacrylate bone cement. The device comprises a first container for a first pasty component of the bone cement, a dispensing plunger arranged in the first container such that it can be shifted and serves for pressing the content of the first container out of a dispensing opening, a mixing facility for mixing the content of the first container, whereby the mixing facility is arranged in the first container and the mixing facility can be moved in the first container from outside for mixing, and at least one second container for at least one second component of the bone cement is arranged in or on said first container. The second container can be opened, such that the contents of the first container and second container can be mixed with each other in the first container, whereby at least a boundary surface of the first container is formed by a mobile volume compensation element.

Abstract: A method for producing a resin composition using an extruder, the extruder having a cylinder and a screw disposed inside the cylinder, the cylinder being provided with a main feed port and further optionally provided with a side feed port disposed downstream in an extrusion direction from the main feed port, and the method comprising: supplying a resin (A) in the total amount to the extruder from the main feed port; supplying a fibrous filler (B), whose a weight average fiber length is 1 mm or more, in the total amount to the extruder from the main feed port, or, with the extruder being provided with the side feed port, supplying the fibrous filler (B) partly to the extruder from the main feed port and the remainder to the extruder from the side feed port; melt-kneading the supplied resin (A) and the fibrous filler (B); and extruding the melt-kneaded material.

Abstract: A system for use in bone cement preparation can include a chamber for intermixing a liquid monomer and solid polymer components, a container, a vacuum channel, and a filter. The mixing chamber can be configured to hold a non-liquid, polymer powder component of a bone cement. The container can be configured to hold a liquid component of the bone cement. The system can have a first interface disposed between the mixing chamber and the container and a second interface disposed between the mixing chamber and the vacuum channel. The second interface can to receive and position the filter between the mixing chamber and the vacuum channel.

Abstract: Process for extrusion of polymer by feeding a polymer feedstock to the feed port of an extruder having (i) two or more barrel sections arranged sequentially from (a) an upstream feed barrel section to which polymer feedstock to be extruded is fed, the upstream feed barrel section containing two screws each having a diameter of X, to (b) a downstream barrel section from which melted polymer is passed to a die and extruded, and (ii) a feed port for feeding polymer feedstock to be extruded into the extruder at its upstream end. The polymer feedstock is in the form of a powder, and the feed port area is a rectangular shape with width limited by the width of the upstream feed barrel section to 2*X and with a length greater than 2.5*X. The total area of the feed ports through which polymer feedstock is introduced is greater than 5*X2.

Abstract: The invention relates to a metering device for supplying devices such as, for example, extruders, injection molding machines or the like with bulk materials such as pellets, chips, granules, powders, flakes, grains, flour or the like, having a housing. It is demonstrated how an optimally smooth passage of such bulk materials through such a metering device is possible without there being any possibility of nests forming and throughflow being hindered in the feed channel.

Abstract: The invention relates to an apparatus for the pretreatment and subsequent conveying or plastification of plastics, with a container with a mixing and/or comminution implement that is rotatable around an axis of rotation, wherein, in a side wall, an aperture is formed, through which the plastics material can be removed, a multiscrew conveyor being provided, with at least two screws 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, where, on the outflow side, there is an offset distance between the longitudinal axis of the screw closest to the container and the radius that is parallel to the longitudinal axis, and in that the two screws closest to the intake aperture are counter-rotating relative to one another.

Abstract: A container for bone cement includes a first member defining a chamber, which contains a first ingredient. The chamber also includes a second member movably coupled to the first member. The second member includes a mixing device that is movably disposed within the first chamber, and the second member defines a second chamber containing a second ingredient. The container additional includes an opening device that selectively opens the second chamber and allows the second ingredient to enter from the second chamber into the first chamber. The mixing device is movable within the first chamber to promote mixing of the first ingredient and the second ingredient to prepare the bone cement. A corresponding method of preparing bone cement is also disclosed.

Abstract: The invention relates to a kneading apparatus (2) for kneading and mixing dough, having a kneading chamber (6) which is bounded on the reverse side at least in regions by a wall (4) and which has a discharge opening (8) for discharging the kneaded dough from the kneading chamber (6) and an input region (10), which is arranged on that side of the kneading chamber (6) which is averted from the discharge opening (8), for filling the kneading chamber (6) with dough which is to be kneaded. The kneading apparatus has at least two shafts (12, 14) to which tools (18, 22) which are arranged in the kneading chamber (6) are fixed, wherein at least one of the tools (12, 14) is designed to convey dough from the input region (10), in the conveying direction (20), to the discharge opening (8). The rotation speeds of the two motor-driven shafts (12, 14) can be set and changed separately from one another with the aid of a control means (16).

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: An apparatus and method for processing a foodstuff comprises a closed conveyor path, a conveyor device, and a treatment chamber. The conveyor path includes an inlet and an outlet. The conveyor device is positioned within the closed conveyor path and configured to receive the foodstuff from the inlet. The conveyor device is further configured to convey the foodstuff along the closed conveyor path toward the outlet. The treatment chamber is positioned within the closed conveyor path downstream of the conveyor device for receiving the foodstuff from the conveyor device. The treatment chamber includes a rotatably driven first kneading shaft configured to collide the foodstuff within the treatment chamber.

Abstract: The invention provides a method of obtaining a compatible resin blend from at least two incompatible resins which are not conventionally blended with each other. The blend of an incompatible resins is dissolved at a molecular level by being melted and sheared under a high shearing rate by rotating a screw without adding a compatibilizer or the like.

Abstract: The invention relates to a mixing kneader comprising at least two shafts (2,3) configured as hollow shafts, on whose surfaces kneading bars (4) are disposed on elements (5). The construction of the shafts is selected in such a way that the resonant frequencies of the shafts have a separation of at least 5% from the excitation frequencies. At least one of the shafts is preferably flowed through by a temperature-control medium, the inlet being disposed on one side and the outlet on the other side of the shaft. The mixing kneader preferably comprises at least one orifice above the shafts which is configured as a dome, the dome being closed by a displacer (22). In addition, at least one orifice for product withdrawal is provided, whose orifice cross section is adjustable during operation.

Abstract: Injection molding systems and methods useful for making microcellular foamed materials are provided as well as microcellular articles. Pressure drop rate and shear rate are important features in some embodiments, and the invention provides systems for controlling these parameters in an injection molding system. Another aspect involves an injection molding system including a nucleator that is upstream of a pressurized mold. Another aspect involves an extrusion system with the reciprocating screw for forming a single phase solution of non-nucleated blowing agent and polymeric material. Another aspect involves very thin walled microcellular material and very thin walled polymeric material. Another aspect provides a method for producing high weight reductions in very thin-walled parts with surfaces that have no noticeable differences from non-foamed parts.

Abstract: The object is to provide a method for manufacturing liquid crystalline resin composition having a hollow filler and a fibrous filler using a common melting-kneading extruder to maintain well-balanced relation between the residual percentages of hollow filler and the fiber length, which balance could not be attained in the prior art. A liquid crystalline resin composition having 5 to 30% by weight of hollow filler and 5 to 30% by weight of fibrous filler is manufactured using a melting-kneading extruder provided with a screw. (1) The liquid crystalline resin is fed from a main feed port located at upstream side in the extruding direction, while a hollow filler and a fibrous filler are fed from a side feed port located at downstream side in the extruding direction.

Abstract: A mixing and kneading machine (1) for continual compounding comprises a screw shaft (3) rotating in a casing (2) and simultaneously moving axially translationally. To sustainably enhance the efficiency of the machine as regards its material thruput per unit of time the screw shaft (3) comprises at least four groups of radial screw vanes (4a, 4b, 4c, 4d) evenly distributed circumferentially, each group consisting of a plurality of screw vanes in axial sequence. The outer diameter (Da) of the screw shaft ranges from 400 to 800 millimeters. The rotary speed of the screw shaft (3) ranges from 30 to 80 rpm. A mixing and kneading machine (1) engineered as such is particularly suitable for compounding an anodic mass in the production of electrodes—anodes—for the aluminum industry.

Abstract: The invention relates to a mixer comprising tools (6a, 6b) and a frame which supports (i) a bowl (5) for the material to be mixed and (ii) motorization means (4, 8) for rotating the mixing tools (6a, 6b). According to the invention, each mixing tool (6a, 6b) comprises a shaft which is mounted to the base of the bowl (5) such that it can rotate and which co-operates with the motorization means (4, 8) in order to rotate the mixing tools (6a, 6b).

Abstract: A process for producing a cycloolefin resin composition comprising a cycloolefin resin and an additive by using a twin-screw extruder is provided, in which loss of the additive caused by volatilization through a vent during kneading is reduced and kneading of resin material with the additive can be sufficiently carried out. When the cycloolefin resin and the additive are kneaded by using a vented twin-screw extruder (10) to produce the cycloolefin resin composition containing the additive, an additive introduction opening (3) is disposed downstream of a vent (2) located nearest to a discharge opening (13) of the twin-screw extruder, and the additive is charged through the additive introduction opening located at a distance from the discharge opening of the twin-screw extruder in the range between longer than 10D and not longer than 30D.

Abstract: A process for preparing organopolysiloxane compositions (A) having a viscosity measured at 25° C. of at least 500 Pa·s., wherein organopolysiloxanes (O) and fillers (F) are mixed and kneaded in a first process stage in a kneading cascade having at least two kneading chambers arranged in series adjacent one another, each containing kneading tools having parallel axes and capable of being driven in co-rotating or counter-rotating directions, the chambers connected to one another by means of openings through which material can pass in a direction transverse to the axes of the kneading tools, with the first kneading chamber having a feed opening and the last kneading chamber having a discharge opening, to give raw mixtures, and the raw mixtures are kneaded and degassed in a reciprocating kneader in a second process stage.

Abstract: A worm extruder and/or an extruder for processing plastic materials and mixtures of plastic materials includes a worm cylinder and a worm shaft which is drivable for rotation therein, wherein an end region of the worm cylinder comprises an inlet opening for feeding plastic material or mixtures of several plastic materials and/or additives in the form of a bulk material via a feed throat. At least one cooling device is provided in a section of the worm cylinder adjoining the inlet opening. An active heat barrier is provided in the region of the feed throat and includes electrically controllable means for heat dissipation. This increases the efficiency of the cooling process, reduces the operating costs and increases the operational reliability of the worm extruder.

Abstract: An object of the present invention is to economically produce a resin composition pellet with the degradation of resin suppressed, by using an ordinary extruder, the resin composition pellet being filled with a desired filling amount of a uniformly compounded fibrous filler, and having a required weight average fiber length, in particular, to produce a resin composition pellet used for a socket of a planar socket pin in which the pitch interval of a lattice area of a semiconductor device is 2.0 mm or less, the thickness of the lattice area is 0.5 mm or less, and the height of the socket is 5.0 mm or less.

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: There is provided a method for decreasing acetaldehyde level in a molded article. The method of decreasing acetaldehyde content in a molded article to be produced comprises introducing into a feed throat of an injection unit a PET material to be plasticized, the PET material having been dried in a pre-treatment chamber ; and introducing into the feed throat an un-treated agent configured to increase moisture level of the PET material to be plasticized. In some embodiments of the present invention, the un-treated agent is also configured to provide additional lubrication to the plasticizing screw.

Abstract: An apparatus and method for mixing by producing shear and/or cavitation, and components for the apparatus are disclosed. In one embodiment, the apparatus includes a mixing and/or cavitation chamber with an element such as an orifice component that is located adjacent the entrance of the cavitation chamber. The apparatus may further include a blade, such as a knife-like blade, disposed inside the mixing and/or cavitation chamber opposite the orifice component. In one version of such an embodiment, at least some of the portions of the orifice component surrounding the orifice and/or the blade are made of a material or materials that have a Vickers hardness of greater than or equal to about 20 GPa. A process for mixing by producing shear and/or cavitation in a fluid is also contemplated herein.

Abstract: A method for dosing an additive in an injection-moulding unit, and an injection-moulding unit. The injection-moulding unit (1) comprises a screw (2) that comprises at least a feed zone (4). The injection-moulding unit (1) also comprises feed devices (7) that dose the plastic raw material into a space between the screw (2) and a cylinder through a feed opening (9) onto the feed zone (4) of the screw. The additive is fed to the feed zone (4) of the screw from the dosing channel (10) that opens into the space between the screw (2) and cylinder (3) in the flow direction of the plastic raw material.

Abstract: Coating compositions for fibrous nonwoven and woven coated mats comprising a platey filler, mica, talc, clay, etc., of particular critical mean particle sizes and aspect ratios, one or more pigments of particular particle sizes and a resin binder producing a good surface and low permeabilities achieved with low coating weights are disclosed. Also, disclosed are fibrous mats coated on at least one surface with the coating compositions and laminates having a coated fibrous mat bonded to at least one surface of the substrate of the laminate. The platey mica in the coating has a mean particle size of about 38+/?8 or less microns and an aspect ratio of about 36+/?7 or less.

Abstract: An apparatus and a method for injecting a liquid dye into a polymer melt, which includes a metering pump with a metering inlet and a metering outlet. The metering inlet connects to a dye tank and the metering outlet connects to a polymer melt carrying component. To add the liquid dye to the polymer melt in the melt carrying component in a quantity that is as uniform and accurate as possible, the invention provides for connecting the metering inlet of the metering pump to a feed outlet of a feed pump, which connects with its feed inlet to the tank. With that, it is possible to generate a feed pressure at the metering inlet of the metering pump, which can be adapted to an injection pressure at the metering outlet of the metering pump.

Abstract: A plastics processing machine for producing fiber-containing thermoplastics includes an extruder, and a scale assembly having a weighing plate for determining an amount of fiber to be supplied to the extruder. A fiber feeding device supplies fibers from a take-off unit into the extruder and includes a first fiber guide unit, which is securely fixed to the weighing plate, for removing the fibers from the take-off unit, and a second fiber guide unit which is decoupled from the weighing plate and so constructed as to route the fibers between the first and second guide units in a substantially perpendicular relationship to a gravitational force.

Abstract: Provided is a method of producing a composition comprising a thermoplastic resin and a rubber, wherein a solid rubber is molten by a rubber kneading machine and fed into an extruder, and the molten rubber is melt-kneaded with the thermoplastic resin in the extruder. The composition has a uniform component ratio and excellent moldability, and can be used widely as raw materials of molded articles, sheets, films and containers.

Abstract: An apparatus for pre-processing and subsequent plastification or agglomeration of synthetic plastic materials, in particular thermoplastic waste plastics for recycling purposes, has a receptacle (1) in which at least one comminuting tool (6) circulates. The housing (7) of a screw (8) is connected to the receptacle (1). The diameter (D) of the receptacle (1) has the following relationship to the screw diameter (d): D=10.{square root over (K.d2)}, wherein D is the inner diameter of the receptacle in mm, d is the screw diameter in mm and K is a dimension-less constant which amounts to at least 190. Thereby the dwell times of the synthetic plastic material within the receptacle (1) are kept at optimal values.

Abstract: An apparatus for the manufacture of fiber-reinforced plastic compositions. The apparatus addresses the disadvantages of previous methods and apparatuses for the manufacture of fiber-reinforced plastic compositions using a plasticizing extruder. Some embodiments of the apparatus may increase and/or better define the fiber content in the plasticate, as well as improve performance in the production of plasticates from fiber fleeces and fiber mats. Embodiments include an apparatus with a plasticizing extruder with adapted geometry of the extruder casing and the corresponding screw elements.

Abstract: The invention is addressed to the problem of providing a method whereby a mixing of bulk material containing fibers (fiber material) and plastic granules for the plasticate extrusion of long fiber reinforced thermoplastics (LFT) will be possible during the melting process with high production outputs and with minimized material content in the extruder system and minimized fiber damage, and to the problem of creating an apparatus with an extruder for the practice of the method, which will have an extruder housing of modified geometry as to the feed opening and the corresponding screw elements, so that the disadvantages described above are avoided.

Abstract: In the case of thickening a feed resin without pre-drying, a device is taught to enhance the thickening effect. The device includes a chamber 4 having a mixing rotor therein for continuously mixing a resin between a feed port 2 and a discharge port 3. A plurality of vent ports 7 connected to vacuum pumps 8, 9 are provided for reducing the pressure in the chamber. An element, e.g. a screw feeder 10, is provided for introducing a viscosity-increasing chemical agent into the chamber. The screw feeder is isolated from the reduced pressure areas of the chamber by elements 35, e.g. reverse screw flights of the rotor. In operation, feed resin from a hopper 6 enters the chamber through port 2 and is dehydrated while being continuously mixed in a drying section 14 via vents 7. After addition of the chemical agent, the resin is continuously mixed in a thickening section 15 while being deaerated.

Abstract: A device for processing foodstuffs or feedstuffs exhibits a conditioning device (2, 3) encompassing a mixing chamber (3) over a retention chamber (2), which are interconnected. Each chamber has a rotor shaft (4, 6) that extends lengthwise into the chamber, and each rotor (4, 6-8) is equipped with the corresponding tools (7, 8) all around the shaft (4, 6). The retention chamber (2) exhibits a second shaft (5), whose tools (7) intermesh for purposes of joint conveyance.

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: In case of thickening a feed resin without pre-drying, it is intended to enhance the thickening effect.

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: 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: 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 and apparatus for making a multi-colored, injection molded product. A nozzle which has at least two separate feed passageways receives the primary resin stream from the primary feed tube. Two separate fluid-operated cylinders add different colorant masses to the separate portions of the feed stream through lateral openings into the two passageways. Blending of the two different masses is prevented in the nozzle and blending with the primary resin stream is minimized during feed to the mold to optimize the brightness of the colors in the end product.

Abstract: 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 without differential conveying of the fluids or causing excessive back pressure or pressure drop on the solution.