Abstract: An aluminum alloy pipe produced by porthole extrusion includes: Mg at a concentration equal to or higher than 0.7% (mass %, the same applies hereinafter) and lower than 1.5%; Ti at a concentration higher than 0% and equal to or lower than 0.15%; with the balance being Al and unavoidable impurities. As the unavoidable impurities, Si has a limited concentration of 0.20% or lower, Fe 0.20% or lower, Cu 0.05% or lower, Mn 0.10% or lower, Cr 0.10% or lower, and Zn 0.10% or lower. Difference between the maximum value and the minimum value of the Mg concentration in a lengthwise direction of the pipe is 0.2% or lower, and the average crystal grain size in a cross-section perpendicular to the lengthwise direction is 300 ?m or smaller. An aluminum alloy pipe used for piping or hose joints and having excellent strength, corrosion resistance, and processability can be provided.

Abstract: One aspect of the disclosure relates to an apparatus including an extrusion nozzle. The nozzle includes an inlet end, an outlet end opposite the inlet end and an axis extending between the inlet end and the outlet end. The extrusion nozzle is configured to rotate about the axis. The extrusion nozzle also includes a rotary drive engagement portion between the inlet end and the outlet end. The extrusion nozzle further includes a cavity including an inlet opening at the inlet end and an outlet opening at the outlet end. The inlet opening has a different configuration than the outlet opening.

Abstract: Melt pumps for producing synthetic granules, extruded profiles or molded parts are disclosed. One disclosed example apparatus includes a worm machine to move synthetic melt, a tool for producing granules, an extruded profile or a molded part, and a melt pump separate from the worm machine, where the melt pump is to press synthetic melt through the tool, and where the worm machine transfers the synthetic melt to the melt pump at a lower pressure than the synthetic melt provided by the melt pump to the tool.

Abstract: The present invention relates to an extruder for a polymer, and a process for extruding a polymer using said extruder. In particular, the present invention provides an extruder comprising: (i) two or more barrel sections (1a, 1b, 1c) arranged sequentially from: (a) an upstream feed barrel section (1a) to which polymer feedstock to be extruded is fed, the upstream feed barrel section containing two or more screws each having a diameter of X; to (b) a downstream barrel section (1c) from which melted polymer is passed to a die and extruded; and (ii) one or more feed ports for feeding polymer feedstock to be extruded into the extruder at its upstream end, characterised in that the total area of the one or more feed ports through which polymer feedstock is introduced is greater than 4*X, and a process for extrusion of polymer comprising feeding a polymer feedstock to the feed port of such an extruder.

Abstract: A dough depositing machine adapted for use in the manufacture of non-traditional baked goods and methods related thereto. Non-traditional dough (e.g., gluten-free, wheat-free, dairy-free, egg-free, vegetarian, or vegan dough) may have properties that are more difficult to accommodate during manufacturing than the properties of traditional dough. Accordingly, various components of the dough depositing machine may be adapted to operate with non-traditional dough. For example, at least one of a dough delivery mechanism, a forming portion, a cutting assembly and a controller of the dough depositing machine may be adapted for use with non-traditional dough. These components of a dough depositing mechanism may be provided as originally manufactured equipment or may be retrofit to an existing dough depositing machine designed for use with traditional dough.

Abstract: A head assembly (10) is provided for use in a rotary head extruder (12) for extruding a food product. The head assembly (10) includes an annular-shaped stator plate (20) and a rotating blade plate (22). The blade plate (22) preferably includes at least six blades, each with a wedge shaped profile, and the stator plate (20) includes extrusion channels that extend at an angle in the range of 20°-50° from tangent to a circle defined by an inner surface (30) of the plate (20).

Abstract: The present disclosure relates to methods and systems for manufacturing rotational spun materials. The rotational spun materials are medical appliances or other prostheses made of, constructed from, covered or coated with rotational spun materials, such as polytetrafluoroethylene (PTFE).

Abstract: A kneading extruder includes a barrel having an extrusion port through which kneaded material including first and second liquid raw material is extruded, and a screw shaft placed in the barrel, the screw shaft kneading the first and second raw material to produce the kneaded material in melted state. A screw driving device continuously rotates the screw shaft at a constant speed, and a die communicates with the extrusion port of the barrel, the die having an extrusion port through which the kneaded material in a pressurized state is extruded. An ejection device ejects a portion of the kneaded material between the extrusion port of the barrel and the extrusion port of the die, the ejection device including an ejection quantity regulating unit for regulating the ejection quantity of the kneaded material so that the pressure of the kneaded material at the extrusion port of the barrel is kept constant.

Abstract: Device (1) for manufacturing a rubber strip material comprising cord material. The device comprises an extruder (4) with an integrated gear pump (13) with adjustable pump speed and with a conveying screw for extruding unvulcanised rubber around the cord material for the purpose of producing a continuous rubber strip. The device furthermore comprises a control unit (15) for adjusting the pump speed of the gear pump, a measuring unit (16) for measuring the height and the width of the rubber strip and for emitting a measuring signal indicative of the measured height and width. The measuring unit can be connected to the control unit for adjusting the pump speed of the gear pump for emitting the measuring signal to it, wherein the pump speed of the gear pump can be controlled by the control unit at least based on the measuring signal.

Abstract: A molding material 22 from an extruding machine 33 is fed by a molding material feed pump 34 to a molding material discharge pump 32, which discharges the molding material from a coating gun 31 to a peripheral edge portion 21a of a multilayer glass panel 21. The rate at which the molding material 22 is discharged from the coating gun 31 is adjusted by controlling the rotational speed of the molding material discharge pump 32 depending on the relative speed between the multilayer glass panel 21 and the coating gun 31. An amount of molding material 22, which is commensurate with the difference between the rates at which the molding material 22 is fed to and drawn into the molding material discharge pump 32, is circulated through a flexible circulation hose 39 to the extruding machine 33.

Abstract: A nanocomposite material apparatus suitable for fabricating a nanocomposite material from different materials is provided. The nanocomposite material apparatus includes an acceleration inner tube and a collection outer tube. The acceleration inner tube disposed along a rotation axis has a top surface, a bottom surface and an outer peripheral surface. Pipes for accelerating different materials is distributed within the acceleration inner tube. Each pipe includes an inlet, an outlet opening at the outer peripheral surface and a spiral trench connecting the inlet and the outlet. Nano materials having electricity are emitted from the corresponding outlets by accelerating different materials within the corresponding pipes.

Abstract: A device for extruding a strip of rubber comprises a passage for forming the strip, which passage is defined by a rotary roller for forming and driving the strip. The device also comprises a shutter for shutting the forming passage, which shutter is deactivatable under the effect of the pressure of the rubber upstream from the shutter exceeding a predetermined threshold.

Abstract: An extrusion system and method uses an accumulator to control and use excess plastic melt. The accumulator is situated between an extruder and a gear pump. The accumulator includes an accumulator housing to store excess plastic melt from the extruder and an accumulator spring connected to an accumulator piston to subsequently send the excess plastic melt to the gear pump. In another embodiment, the accumulator includes an accumulator housing to store excess plastic melt from the extruder and a hydraulics system to send the excess plastic melt to the gear pump. The accumulator can be a first in first out (FIFO) device having a melt passage through the accumulator piston. The system and method are used particularly advantageously in Alternate Polymer extrusion installation in which gear pumps regularly increase and decrease their speed but in which the melt-supplying extruder cannot accommodate such rapid speed changes.

Abstract: A head assembly (10) is provided for use in a rotary head extruder (12) for extruding a food product. The head assembly (10) includes an annular-shaped stator plate (20) and a rotating blade plate (22). The blade plate (22) preferably includes at least six blades, each with a wedge shaped profile, and the stator plate (20) includes extrusion channels that extend at an angle in the range of 20°-50° from tangent to a circle defined by an inner surface (30) of the plate (20).

Abstract: The present invention comprises a rotary drive nozzle die machine for use with at least first and second dough extruders. The machine includes at least one rotatable nozzle having at least two openings for extruding at least two strands of dough therethrough, a first compression head for directing a first flow of a first type of dough under pressure from the first extruder toward the at least one rotatable nozzle and a second compression head for directing a second flow of a second type of dough under pressure from the second extruder toward the at least one rotatable nozzle.

Abstract: An extrudate rotator die element, (24) extrusion die (18) comprising the extrudate rotator die element and a method for making multiple stripe extrudate from multilayer extrudate. The extrudate rotator die element (24) comprises a plurality of inlet slots (46), a plurality of outlet slots connected by rotated slot cavities (44). Each slot cavity (44) has a major cavity axis that rotates such that the outlet major axis of each outlet slot is oriented at an angle from the inlet major axis of the connected inlet slot (46) and the outlet slots are oriented such that each outlet major axis is coplanar with each other outlet major axis.

Abstract: An extrusion device for making spiral stripping electrical wires is disclosed to include a fixed mold member, which has a main flow path and a supplementary flow path for the passing of a first insulative material and a second insulative material, and a rotating mold member, which is rotatably supported on the front end of the fixed mold, having a mold hole axially connected to the outlet of the main flow path and one or multiple flow paths, each flow path of the rotating mold member having an outlet in communication with the mold hole and a common annular inlet disposed in communication with the outlet of the supplementary flow path for guiding the second plastic material spirally into the first plastic material to form a spiral strip in the insulator during extrusion of the two plastic materials with a conductor through the mold hole.

Abstract: High-capacity extrusion die assemblies (20, 90, 130, 140, 180, 252) each having a tubular section (44, 146, 162, 268) and an elongated, axially rotatable, helically flighted screw section (56, 56a, 152, 168, 276, 278) which cooperatively define frustoconical, outwardly diverging material flow paths (75, 160, 291) at constant or differing divergence angles of from about 1-11°. The use of diverging tubular sections (44, 146, 162, 268) and screw sections (56, 56a, 152, 168, 276, 278) permits the use of larger die plates (76, 118, 292) with an increased number of die openings (80, 124, 296). This allows significant increases in extrusion production rates. The die assemblies (20, 90, 130, 140, 180, 252) can be used in the production of a wide number of human foods or animal feeds, and particularly aquatic feeds of the floating or sinking variety.

Abstract: An extrusion system and method uses an accumulator to control and use excess plastic melt. The accumulator is situated between an extruder and a gear pump. The accumulator includes an accumulator housing to store excess plastic melt from the extruder and an accumulator spring connected to an accumulator piston to subsequently send the excess plastic melt to the gear pump. In another embodiment, the accumulator includes an accumulator housing to store excess plastic melt from the extruder and a hydraulics system to send the excess plastic melt to the gear pump. The accumulator can be a first in first out (FIFO) device having a melt passage through the accumulator piston. The system and method are used particularly advantageously in Alternate Polymer extrusion installation in which gear pumps regularly increase and decrease their speed but in which the melt-supplying extruder cannot accommodate such rapid speed changes.

Abstract: Cylindrical extrusions having multiple colors, capable of serving as parisons for subsequent blow molding operation, are formed in an apparatus in which plastics of each color to be incorporated in the finished product are fed by separate extruders to an extruding head having a stack of cylindrical spools each formed with a number of apertures around their periphery. The apertures in each spool are interleaved with corresponding apertures in the other spool or spools. The interiors of the apertures are fed into a conduit which extends coaxially with the axes of each of the spools so that the outputted plastic has multicolored stripes along its length. In an embodiment in which the spool is rotated in timed relation to the feed from the extruders, the output is twisted along the central axis to form a “barber pole” stripe arrangement. In an alternate embodiment a programming plate is disposed beneath the output.

Abstract: An extruder has a casing with at least one bore. One screw each is arranged in the bore in a rotatably drivable manner and is provided with a screw tip adjoining a nozzle plate. A shearing tool is arranged at the screw tip directly in front of the nozzle plate and is provided with at least one arm, with a shearing gap being formed between said arm and the nozzle plate.

Abstract: In a joining section there are columnar distribution pins, on whose periphery a groove is formed. A size of the groove is strictly determined. A first dope and a third dope are fed through the respective grooves such that a width of each dope is controlled. Thereafter, the surface and third dopes are joined with an second dope. Thus a multi-layer stream is obtained and cast through a die lip of a casting die for forming a casting film having a multi-layer structure. The casting film is dried and thus a multi-layer film is obtained.

Abstract: Extruding radiused plastic articles with an extruding machine terminating in die defining a path of travel between upstream and downstream ends. The die has an outlet opening extending longitudinally in the direction of the path of travel, the opening oriented so a polymeric material is extruded therefrom in a direction approximately perpendicular to the path of travel through the die. Oppositely rotating rollers of tapered diameters are disposed side by side to receive the extrudate therebetween, the rollers arranged so their longitudinal axes intersect and their smaller diameters are oriented towards the downstream end of the die. Extrudate passing through the opening is characterized by a higher flow rate proximate the upstream end thereof to thereby form a radiused extrusion. The rollers draw the extrudate from the die outlet opening without significantly altering the radiused shape of the fluid plastic material.

Abstract: The invention is an extrusion apparatus having a driven feed segment that is rotatably driven about central mandrel or within a housing member. Rotation of the driven feed segment subjects one or more streams of resin introduced onto a surface thereof to transverse shear during radial flow. One of more driven feed segments can be assembled with other components of conventional extrusion die assemblies. Extrusion die assemblies can include one or more driven feed segments rotated in the same or opposite direction of each other. The number of streams of resin and rotational speed of the driven feed segment can be controlled to produce microlayered film having in excess of 4000 layers.

Abstract: An extrusion molding system includes a die having a first opening with a unvariable shape and a second opening with a variable shape, an extruder which feeds resin to the die, and a gear pump arranged between the die and the extruder. An ECU conducts a first sequence control to change the shape of the second opening and a second sequence control to change the rotation speed of the first gear pump in synchronism with a change in the shape of the second opening.

Abstract: An apparatus and method for molding balloon catheters is disclosed. The balloon may be molded by providing a polymeric tube within a mold having an interior cavity in the shape of the desired balloon. Microwave energy, which may be generated by a gyrotron, may then be directed toward the mold, to heat the polymeric material without heating the mold. Once heated, pressurized fluid may be injected into the tube to blow the polymeric material against the interior cavity whereupon the material can cool to form the balloon or can be further heatset by additional microwave energy and be cooled to form the balloon. In accordance with one embodiment, microwave energy can also be used without a mold to form a medical device. A polymer extrusion apparatus is disclosed utilizing a microwave energy for heating polymer feedstock material within the extruder tip and die unit just prior to formation of the extrudate product.

Abstract: Apparatus for extruding a profile on a glazing comprises drive means on which is mounted an extrusion head with an extrusion nozzle, and means for rotating the nozzle relative to the drive means. The apparatus may be used in a process which comprises extruding the profile through the nozzle while it is being moved by the drive means along a first edge of a glazing, around a corner of the glazing and along a second edge of the glazing, the nozzle being rotated relative to the drive means as it moves around the corner. The extruded profile comprises a first edge portion extending along a first edge of the glazing, a sharp corner portion extending around a sharp corner of the glazing and a second edge portion extending along a second edge region of the glazing, the portions of the profile being continuous.

Abstract: A die head for an extruder including an outer shell, an inner cylindrical mandrel, an annular die gap at a discharge side of the die head, at least one intake opening for receiving a melted mass, at least one distribution element for distributing the melted mass to a central ring channel terminating in the die gap, an inflow channel connecting the at least one intake opening to the at least one distribution element. Further, at least one of the distribution element and the inflow channel are formed such that the distribution element is set into torsional motion around a longitudinal axis of the mandrel due to an flow of the melted mass, and the flow of melted mass is routed to the central ring channel.

Abstract: The invention provides a method for controlling the width of a plurality of extruded filaments comprising providing a polymer supply and an extrusion die comprising a plurality of extrusion capillaries and a plurality of counterbores allowing fluid communication between the extrusion capillaries and polymer supply, providing an adjustable insert for interrupting fluid communication between the polymer supply and at least one extrusion capillary, providing at least one fluidized polymer, conveying the polymer through the polymer supply, counterbores and extrusion capillaries to extrude a plurality of filaments, and interrupting the fluid communication between the polymer supply and at least one extrusion capillary by adjusting the insert.

Abstract: An apparatus and method for extruding a multilayered article employs a shearing rod connected to the end of an extruder screw. The shearing rod is rotated along with the extruder screw and shears the polymer materials being advanced along an annular space between the shearing rod and the inner surface of a bore in a housing. A first melt stream of polymer material is advanced by the extruder screw into the annular space. A second melt stream of polymer material is fed (e.g., from a second extruder) through a passage in the housing into the annular space to join with the first melt stream therein. The rotation of the shearing rod shears the melt streams and swirls them together to produce a multiplicity of layers of the polymer materials.

Abstract: A crosshead assembly for forming extruded shapes from molten polymer. The assembly includes body sections, a mandrel, a choke ring, and a tip holder for admitting, turning, and accelerating molten polymer toward a novel rotatable die sub-assembly. The die sub-assembly includes a hub, axially-loaded duplex ball bearings, and a pulley for rotating the sub-assembly. The choke ring extends into the die sub-assembly, and a cylindrical seal element is disposed therebetween. A changeable extrusion tip is threaded onto the second cylindrical portion of the tip holder. A die in the sub-assembly is specific to the shape to be extruded. For forming a spiral ribbon and a skin layer on core material, the die opening is a circular central aperture and a radial slot. Multiple ribbons may be extruded simultaneously by using multiple slots.

Abstract: The present invention relates to a method of forming and an apparatus for forming a profiled helical tube (100, 200) by rotating a profile die (102, 202) during the extrusion process to impart a helical form to a profiled tube. A method of forming and an apparatus for forming a profiled helical tube (100, 200) can include a rotating or non-rotating profile die (202) with a helical extrusion gap (204). An extruded helical or non-helical tube 300 can be rotated by rotating the tube itself, for example, by rotating a haul-off mechanism (340, 340?).

Abstract: An apparatus is disclosed for converting feed material into granules under the application of pressure. The apparatus includes a conveyor screw arranged about an axis of rotation with at least one screw spiral, a rotationally symmetric working chamber arranged about the axis of rotation, which chamber is formed by two annular walls arranged at an axial distance from one another and by an annular perforated die. The annular wall has a central opening arranged coaxial to the axis of rotation into which the conveyor screw discharges in order to feed the working chamber with feed material. The apparatus also includes a pressure element that rotates about the axis of rotation and has at least one pressure arm, which extends from the axis of rotation toward the perforated die delivers the axially supplied feed material to the perforated die in the radial direction, and compacts it while doing so.

Abstract: A food shaping device for forming a three-layered food comprises: at least two first guide units and a food output unit. The food output device comprises a main tube; a middle tube; an inner tube; an inner circular path; an inner material guiding nozzle; and an outer material guiding nozzle. Stuffing is filled into a second guide unit; then the stuffing is pushed to the output end of the inner tube by a screw propeller to be as an inner layer material. Dough is fed into the inlets of the main tube from the two first paths and then is further processed to be as an outer layer material of the food product. A part of the dough horizontally passes through the transversal inlet of the middle tube and is further processed to be as a middle layer material. Thus a three layers food is formed.

Abstract: An assembly for use in continuously forming a plurality of lengths of flexible noise attenuating cutting line for use in rotary vegetation trimmers. The assembly includes a breaker plate having a conically shaped inner portion and a planar outer portion. A plurality of extrusion dies are disposed in the outer portion wherein each die defines a die hold configuration at its lower end for the extrusion of one or more monofilament polymer strands therethrough, and a drive assembly is provided for rotating each of the dies at a predetermined speed such that upon directing a flow of molten monofilament polymer material onto the breaker plate, the material is directed from the inclined central portion onto the planar outer portion where it is extruded through the rotating dies to create a plurality of twisted strands of polymer material that upon cooling, stretching and heating, define lengths of flexible noise attenuating cutting line.

Abstract: A polymer extrusion crosshead assembly for forming a spirally-striped extrusion. The assembly includes conventional components for admitting, turning, and accelerating primary molten polymer toward a novel rotating die sub-assembly. A body element includes an axial counterbore for receiving a manifold supply block in communication with a source of secondary striping polymer. A wear plate is attached to the manifold block. The die sub-assembly includes a striping die having an annular passage for conveying the primary polymer to form an extruded tube or a core material coating. The die is loaded against the wear plate by a Belleville washer. The die includes one or more striping nozzles in communication with the manifold block for injecting secondary striping polymer into the annular stream of primary polymer flowing through the die, creating a longitudinal stripe of striping polymer. Rotating the die while extruding both polymers yields a helically striped (spiral) extrusion.

Abstract: A polyurethane resin coating device includes a material mixing unit for mixing materials to have them reacted to form polyurethane resin liquid mixture. Subsequently, the polyurethane resin liquid mixture flows downward to a pressuring and sending unit to be mixed and reacted again by the helical rods rotating in the pressuring and sending unit and then pressured and conveyed to a gear pump. Afterward, the polyurethane resin liquid mixture is controlled by the rotating speed of the gears in the gear pump and steadily conveyed onto a coating wheel. A gap adjustable in size is formed between the wheel surface of the coating wheel and the outlet of the gear pump, able to carry out coating steadily and evenly.

Abstract: An extruding apparatus for food materials having a filling material and a wrapping material extrudes and envelops the filling material with the wrapping material. An internal cylinder supplies the filling material while a concentrically arranged external cylinder creates an annular space for extruding and enveloping the material supplied. The wrapping material is fluidized by a fluidizer accommodated in the annular space. A driving mechanism is sealed from the fluidizer and drives the fluidizer in the annular space. The driving mechanism is driven by a transmission mechanism. A storage space section near the seals prevents wrapping material from penetrating the driving mechanism.

Abstract: A spiral die assembly can obtain a homogeneous pipe body, an inflation film with/without drawing and a functional film by dispersing molten resin homogeneously, and the spiral die assembly is capable of being applied to various molten resins and extruding conditions. The spiral die assembly comprises a main body 1 of said spiral die assembly, a mandrel 2 having a spiral groove 3 around its outer surface inserted on the inside of the main body and a rotatable ring 5 having a desired width fitted along the outer surface of the spiral groove 3 and fitted in a portion of a die cylinder which forms the inner surface of the main body 1 in a range corresponding to both ends of the spiral groove 3.

Abstract: A method and system are provided that efficiently compound high levels of inorganic filler, processing fluid and silicone polymer at a commercial rate into homogeneous filled and devolatilized silicone compositions. In the method, filled silicone compositions are compounded by compounding a filler, processing fluid and silicone polymer in a first compounding apparatus to produce a first dispersed composition and simultaneously compounding a filler, processing fluid and silicone polymer in a second compounding apparatus that shares a common extruder shaft with the first compounding apparatus to produce a second dispersed composition. The system comprises a first compounding apparatus and a sequential second compounding apparatus that shares a common shaft with the first compounding apparatus.

Abstract: An extrusion device (1) for manufacturing a product based on a rubber mix, which comprises a rotary roller (5), an inlet orifice (15) for the rubber mix and a vault (6) partially circumferentially covering the external surface (51) of the roller (5), the rubber mix being driven from the inlet orifice (15) into the air gap situated between the vault (6) and the roller (5) towards an extrusion orifice (21) defining the profile of the product. The extrusion orifice is delimited by a wall (20) which cooperates with the external surface (51) of the roller (5), and the vault (6) carries on its internal surface oriented towards the roller projecting threads in order to delimit with the surface (51) of the roller a chamber for plasticization of the mix, at least two of the threads extending substantially axially of the roller.

Abstract: An extrusion die for extruding biodegradable material, the extrusion die comprising: a mandrel; a nozzle extending from the mandrel; an outer member positioned near the mandrel; an extrusion orifice between the mandrel and the outer member; a member in communication with at least one defining member of the extrusion orifice, wherein the member is capable of producing relative movement between the outer member and the mandrel, wherein the relative movement has a component transverse to an extrusion direction of biodegradable material through the extrusion orifice; a flow control device which controls flow of biodegradable material through the extrusion die; and a positioning device which positions the outer member and the mandrel relative to each other.

Abstract: The two belt parts (2a, 2b) of a belt (2) made of plasticatable material are produced with the aid of a first station (6) and a second station (8). The first station (6) includes a rotatable mold drum (14) and a continuous mold belt (18). The mold belt (18) is brought together with the mold drum (14) along a peripheral section via an upper pressure roller (20), a lower pressure roller (22) and a tensioning roller (24) in such a manner that a hollow mold space (26) is formed between the mold drum (14) and the mold belt (18). An extruder (10) is mounted forward of the hollow mold space (26). Furthermore, the first station (6) includes a filament feed (28) for forming a reinforcement layer (4) in the first belt part (2a). For a simplified manufacture of the belt (2), the second station (8) includes only a direction-changing roller (30) in addition to the extruder (12) and a mold drum (16).

Abstract: A rotating circular die for mounting on an extruder. The die incorporates an inner component comprising a cone with support independent of the outer component and extruder, thereby permitting forward and backward adjustment of the inner component in relation to the outer component during actual processing. Independent support for the inner cone eliminates the sanitary and microbial concerns that are present when die assemblies are housed within the extruder. The inner cone is self-centering to provide extrudate of uniform thickness and capable of imparting rotational shearing stresses on the extrudate to provide for starch alignment. The rotation of the inner component considered with the positional adjustability produces uniform extrudate as well as minimizes production downtime by reducing clogging and backup risks and providing for easy clean up.

Abstract: An extruder for extruding extrudate is provided and includes a generally cylindrical barrel portion having an end face. A screw conveyor is rotatably arranged coaxially within the barrel portion and has a downstream end. The screw conveyor has helical flights that define a first flow path with the barrel for the extrudate. The first flow path has a first cross-sectional area. An adapter is arranged on the end face of the barrel portion and defines an exit portion of the extruder. A screw tip is secured to the downstream end of the screw conveyor and extends into the adapter. The screw tip and the adapter define a second flow path for the extrudate with a second cross-section area being at least as large as the first cross-sectional area.

Abstract: The present invention provides a device for producing an unvulcanized rubber member for tire manufacturing. The device includes an extruder with a die that extrudes the unvulcanized rubber member to form multiple rib-protrusions that extend in a direction corresponding to a circumferential direction of the tire. A conveying apparatus receives the unvulcanized rubber member and conveys it in the extrusion direction. A roller has an outer surface with protruding portions that form multiple grooves in the unvulcanized rubber member that extend in a direction radial direction of the tire and intersect the rib-protrusions.

Abstract: For producing coiled bakery products comprising two strands each made of an outer and an inner doughy substance, a nozzle arrangement (12) comprises two inner nozzles (14, 16), which are each surrounded by an outer nozzle (18, 20), wherein all of the nozzles (14, 16, 18, 20) are rotatable about a common axis of rotation (148).

Abstract: An improved process for producing polybutadiene golf ball cores is disclosed. The golf ball cores are from polybutadiene rubber compositions having a high Mooney viscosity and/or a high molecular weight and a low dispersity is disclosed. The apparatus includes an internal mixer that compounds a batch of golf ball core stock. A sheeter forms sheets of golf ball core stock and has a sheeter inlet proximate the mixer outlet and a sheeter outlet. A preform shaper forms golf ball core preforms from the sheets of golf ball core stock.

Abstract: An external stabilizer or guide cage for plastic film extrusion has an upper frame comprised of a ring and structure for rotatably supporting the ring. A lower frame is suspended from the ring of the upper frame, and is positioned such that the lower frame surrounds the extruded tube. The lower frame can employ one or several banks of guide arms that keep the tube aligned axially as the tube is drawn upwards. The arms on the lower frame define an iris aperture, or a stack of iris apertures. The arms include channels for coolant flow. Heat transfers from the film to the guide arm. The upper frame includes a drive for rotating the ring and the lower frame of the guide cage over a predetermined arc, e.g., 60 degrees, to compensate for gauge variations in the film.

Abstract: In the extrusion of feed-stuff pellets and relevant consumer products, the extruded products are subject to expansion as a result of the boiling of their water content when the products, after being exposed to high extrusion pressure and a correspondingly high temperature, are discharged to the atmosphere through the extrusion nozzles. Such an expansion is directly aimed at, but it is desirable to be able to control it, which is difficult by adjustment of the ordinary process parameters. With the invention it has been found that the expansion which arises can be controlled in a highly constant manner, i.e. by carrying out the extrusion into a closed chamber in which an over-pressure of a few bar is established in relation to the atmospheric pressure, and which can be regulated. The extrusion products can be continuously discharged from this chamber, or they can be discharged intermittently in portions.