Abstract: A foil-blowing apparatus has at least one deformable lip defining the annular orifice from which the thermoplastic tube which is blown to form the coil is extruded. The lip can be provided with an array of effectors which, in response to a thickness-profile measuring unit, can radially deform the lip to correct thickness errors. The lip can be under prestress and the radial deformation is effected by measuring the thickness and superimposing a radial force on the prestress.

Abstract: Platelike webs of thermoplastic material are produced by extruding a strip of the thermoplastic material and passing it through a roll unit having a pair of intake rolls upstream of which a bank of the material is formed. The delivery speed is controlled in response to the bearing pressure of the intake rolls.

Abstract: A system for making synthetic wood products from waste wood fiber and recycled plastic material by mixing waste wood fiber having a moisture content of less than about 15% with dry waste plastic material, including low density and/or high density polyethylene; heating and kneading the mixture to form a homogeneous mass; sizing the mass into discrete chunks suitable for use as an extruder feed material; extruding the material to form products having predetermined cross sections; and rolling and cooling the product to prevent deformation of the product shape.

Abstract: This invention relates to a device for the production of grate constructions. In general, such constructions are manufactured manually by connecting transverse ribs to elongated supporting means by welding. Grate constructions can be manufactured automatically at a single step by means of an extruder known from pipe manufacturing techniques. Chill moulds moving in the production direction are thereby modified in such a manner that the chill moulds comprise at least two moulding spaces communicating with each other by means of conduits.

Abstract: Pastilles are formed by passing small quantities of a viscous material through small openings and onto a moving conveyor surface located therebeneath. The viscous material is contacted by the conveyor surface after the material protrudes from the openings, but before the material becomes sufficiently large to break free and fall. Instead, the conveyor surface forcefully extracts the material from the openings, thereby resulting in the formation of pastilles which are of smaller size than would have been the case had the material been allowed to break free and fall on its own accord.

Abstract: A method of producing round rod formed of thermoplastic material by extrusion is described. The rod, following extrusion, is first heated and then cooled while rotating fully supported on rollers. The rollers impart a concentric outer surface shape to the extruded rods and permit uniform cooling across the entire cross section of the extruded rod.

Abstract: A fishing line, or just a leader, has a core (11) which is coated by plastic material as it is pulled through an extruder (3) and then a quench bath (4) by a variable speed drive device (9). Very fine control can be exerted by laser devices (11, 12) before and after coating, and adjusting a selection of parameters such as drive speed, extrusion rate, pressure and temperature, and cooling. A double coating may be applied or additives mixed in the extruded plastics which will give a desired floating or sinking characteristic.

Abstract: An apparatus for the production of a collagen tube to be used as a vascular prostheses or nerve suture, including a cylindrical tubular spinneret having a feed end for an aqueous solution of collagen gel and a discharge end and a coagulant tube concentrically disposed in the spinneret with all around circumferential clearance and terminating upstream of the discharge wherein a tube of aqueous acid collagen gel is extruded through the clearance around the coagulant tube. The coagulant tube has its inner wall contacted with a coagulating solution emerging therefrom before the tube of aqueous collagen gel reaches the discharge end of the cylindrical tubular spinneret. The discharge end of the tubular spinneret terminates in a bath of coagulating solution and a bed is disposed in the bath to receive the extruded collagen tube from the end of the tubular spinneret. The tubular spinneret is capable of being displaced with respect to the bath.

Abstract: To make decorated strands of pasty products, a pasty material is continuously extruded from a nozzle integral with a mobile support disposed above a continuously moving conveyor belt. The apparatus thus includes a conveyor belt adapted for continuous movement, a mobile support disposed above the conveyor belt, at least one extrusion nozzle integral with the mobile support, at least one source for providing a continuous supply of pasty product to each nozzle and means adjacent an edge of the conveyor for transmitting movement to the support for moving it in one plane while keeping it in the same orientation in space for providing a repetitive curved trajectory for each extrusion outlet orifice. In operation, the extrusion nozzles, having their outlet orifices above the conveyor belt, are positioned at an angle of from 60.degree. towards the direction of movement of the conveyor belt to being parallel with the belt.

Abstract: A molten film extruded from a slot die onto a take-off drum in a cooling system is first cooled on the circumferential surface of the take-off drum and by the ambient air, is subsequently passed into the water bath of a water trough in which the take-off drum is immersed, and finally is transferred from the water bath of the water trough into a post-cooling water bath, in which the film solidifies to an intermediate film having a desired final temperature of approximately 40.degree. C. When the film leaves the take-off drum, the partially solidified molten film has a mean temperature T.sub.u of between 100.degree. C. and 120.degree. C. For optimization of the dwell time of the molten film in the cooling system and in the post-cooling water bath, the drum diameter D of the take-off drum and the length L of the post-cooling water bath are determined by a specific relationship.

Abstract: A direct or indirect extrusion press is disclosed, which includes a container (20) that defines a chamber (19) to hold a billet (11) to be extruded, a ram (12), a die (14), a die holder (41), a base (13) and a shears (15) to shear heels (17) of the billets (11). The die (14) is movable axially to the container (20) or vice versa. The container (20) defines at least two chambers (19) and is movable in a plane perpendicular to the plane on which the axis of the chamber (19) and the die (14) lies. An extrusion plant which includes a press as described above is also disclosed. The extrusion plant includes three stations that perform extrusion (19a), charging (19b) and the cleaning and readying of chambers (19c) respectively, the stations cooperating respectively with the chambers (19).

Abstract: In accordance with the apparatus for practicing the instant invention, biaxially oriented polymer sheet is produced by flowing and advancing a polymer workpiece between pairs of opposed working surfaces which converge in the "X" direction while diverging in the "Y" direction. The surfaces which converge in the "X" direction are provided with protruding working surfaces which squeeze the workpiece laterally as the workpiece advances longitudinally. The protruding working surfaces force the material of the workpiece to expand to the full width of the working surfaces while minimizing limitations due to friction between the surfaces of the die and the workpiece. In accordance with a first embodiment of the invention, the apparatus utilizes an extrusion die to effect the transformation of stock into flat sheet polymer material.

Abstract: An extruder having a barrel with a central passageway, which passageway journals a single rotating extruder screw with flight thereon. The extruder screw has a feed section, a transition section and a metering section with the metering section discharging the extruder melt. The extruder barrel has an opening at the feed section that receives a deflector member that is located between such opening and the hopper that receives the plastic material to be processed for feeding into the central passageway for conveyance and working by the extruder screw. The deflector member has a progressively restrictive inlet that cooperates with the flights of the extruder screw to draw in the plastic material fed thereinto.

Abstract: A screw extruding machine for extruding a material such as rubber, plastics or the like kneaded and blended into a sheet-like form. The screw extruding machine includes two screws horizontally and rotatably supported on a casing, a top-open hopper provided on the side of a screw base portion of the casing, an outlet opened in an axial direction of the screw on the side of a screw front end of the casing, and a roller die in proximity of the outlet, the screw having a feed portion which corresponds to a portion facing the hopper and a compression portion which corresponds to a front end side, whereby material to be extruded supplied from the hopper is extruded into a sheet-like form by the roller die from the outlet via the feed portion and the compression portion by the rotating twin screws, the hopper being positioned over the feed portion of each screw.

Abstract: An apparatus for the production of reinforced tubes by helical winding of thermoplastic strips and reinforcing members on a rotating mandrel, comprises a dual orifice extrusion die means capable of extruding a plastic strip in several different widths while simultaneously feeding a reinforcing member to the rotating mandrel.

Abstract: An improved machine for manufacturing short cut varieties of Italian pasta ("orecchiette", etc.) comprises three cascaded units: a first unit, with screw feeders, by which pasta mix is fed in and extruded into sticks; a second unit by which the pasta sticks are cut into cylindrical pellets; and a third unit by which the pasta pellets are gathered up and shaped, comprising a first knurled roller and a forming plate with a bead, which operate in conjunction to the end of flattening and curling the pellet, and a second roller in soft material that rotates in the opposite direction to the first roller and interacts with a third roller, carrying a projection, to form the pasta into the typical cup shape of the varieties in question.

Abstract: An equipment for portioning out pieces of a doughy product, which pieces have a weight, which, to a great accuracy, is equivalent to a certain desired, predetermined weight. The equipment includes a pump having a feeding device and a discharge duct as well as means in a feeding unit to feed said doughy product through said feeding duct into said pump. The equipment also includes means to cut off said pieces of the product, which is discharged by the pump through said discharge duct. The pump is a lobe rotor pump. The doughy product is fed to the lobe rotor pump by a device, which provides a flow, which is somewhat larger than the discharge flow of the pump, a certain amount of the product being recirculated in said feeding unit.

Abstract: A process for forming discrete, shaped interlayer blanks comprising extruding thermoplastic melt into an endless, distortable straight-sided sheet having a gradient color band along one side, the melt forming the region of the sheet laterally of the color band extruding at a greater thickness than that forming the portion containing the color band, stretching the side of the sheet containing the region formed from the greater thickness melt more than the other side while extrusion continues to shape the sheet into an arcuate form of substantially uniform thickness having different radii along each edge, the edge of greater radius being on the side formed from the greater thickness melt, quenching the sheet to set the polymer, advancing the shaped sheet to a cutting station and cutting shaped quadrilateral sections out of the sheet having the gradient color band along one longitudinal side to form the blanks.

Abstract: Apparatus for preparing extrudable food products prior to cooking includes depositing portions of food product onto a horizontal surface, coating the food portions with flour, vacuuming away excess flour, and incrementally flattening the food portions to a desired thickness. An apparatus for performing this process includes a first flour depositor, a food depositor, a second flour depositor, and a food flattener, all mounted above a conveyor belt. The conveyor belt is mounted atop a supporting chassis which, in addition to providing a mounting base for the components named above, houses the electrical and hydraulic control means for the apparatus. The food depositor comprises conventional extruding means suitable for use with raw dough or ground meat, and a duality of hydraulically activated, high-speed cutter blades. The uniquely designed cutter blades have flattened, essentially planar cutting edge portions which create an aerodynamic shock wave along the line of impact between the blades.

Abstract: A device for measuring the wall thickness of an extruded tube by means of ultrasonic pulses comprises a tube wall thickness measuring instrument being rotatable about the circumference of the tube and being connected to an arm extending in a plane perpendicular to the tube. The arm is hingedly connected in said plane to a ring perpendicular to the axis of the tube and concentrically about the tube. The arm bears a weight outside said ring. An adjustable pressure element, such as a spring or preferably a two way operable air cylinder, acts upon the arm.The measuring element may engage two supporting faces, the angle between the supporting faces being adjustable.Furthermore a detachable fixing element, such as a magnet, engages the arm so that the arm can be disconnected from the magnet and may be moved from the plane perpendicular to the tube.The wall thickness is measured only by means of one echo coming from the inner wall of the tube when an ultrasonic pulse emitted by the device hits said wall.

Abstract: An apparatus for monitoring the production of elongate profiles which are formed from one or more mixtures of rubber or thermoplastics material in an extrusion head which is fed by one or more extrusion devices. The profile passes through a cooling zone in which longitudinal shrinkage of the profile occurs. The actual shrinkage is monitored and compared with desired shrinkage by a control device which controls the drive means for the extrusion devices. The profile also passes over a weighing device which determines the weight per unit length thereof, with the weighing device also being operatively connected to the regulating or control means. If a deviation from the desired shrinkage in the zone or station is ascertained, the regulating device sets a new, corrected, desired weight per unit length value to be achieved at the weighing device. To achieve this desired weight per unit length, the drives for the extrusion devices are each adjusted by a uniform amount by the regulating or control device.

Abstract: Apparatus for producing frozen confections includes a plurality of metering pumps which equally divide a flow of semi-solid confectionary material into a like plurality of flows and delivers such flows to a like plurality of forming heads. The forming heads are reciprocated along a generally diagonal axis relative a conveyor during formation of confectionary products and in the opposite direction upon completion of formulation. The speed of translation in one direction is preferably distinct from the speed in the other direction. If desired, such flows may be combined with other unidirectionally flowing material to form a layered product. A cutting wire severs the flows of combined confection material into a desired length product in timed relation to the reciprocation of the forming heads. The individual products are received on a moving conveyor which transports them to the next operating station.

Abstract: A system for molding elongated ribbon-like products from thermoplastic materials utilizing a plurality of molds which are moved in tandem along a production line. As the molds are moved along the line at successive stations they are, while open, thermally adjusted to a temperature suitable for forming the product to be molded and then a ribbon of plastic is deposited in them. They are then closed and cooled and reopened and the molded product removed. The system utilizes only enough molding pressure to assure distribution of the plastic to all parts of the mold cavity and shaping of the molded product to the geometric design of the mold. The system includes a transfer means for the molds which returns the emptied molds for recycling through the molding process.

Abstract: A device for filling in a single operation of several mould spaces in a mould tray with a thick fluid substance such a chocolate, creme, fondant, and similar. The device consists primarily of a tank; a distribution vessel with filler openings; a transport pipe between the tank and the distribution vessel; a constant-flow pump connected to the tranport pipe and intended for pumping the substance from the tank to the distribution vessel and for pumping the substance out of the filler openings; at least one mould tray located under the distribution vessel with filler openings; a means which switches on and off the pump for pumping the substance; and a means which switches on and off the pump for withdrawing and retaining the substance in the filler openings once the mould tray is filled.

Abstract: Apparatus and method for extruding and cooling self-adhering elastomeric materials to obtain substantial uniform consistency. This is accomplished by bisurfacially exposing the material to cooling while supporting the material as a foraminous means.

Abstract: Dough pieces are produced in high volume by a plurality of dual extruders spaced across a conveyor and each having a pair of extrusion nozzles aligned in the direction of conveyor travel. A cut-off mechanism severs the dough extrusions to deposit dough pieces on the conveyor. The speed of the conveyor is related to the speed of the cut-off mechanism so that the dough pieces produced by each extruder form a single uniformly spaced line. The extruders are fed from a common supply through individual inlets and means are provided to balance the flow through the nozzles.

Abstract: An apparatus for rotationally driving two closely spaced shafts comprises a driven gear on each shaft and two drive apparatus for driving each of the driven gears. The shafts are constrained to rotate at the same speed by interengaging teeth of the driven gears or by an idler gear. Four independent motors are used to drive the shafts. If the shafts are not parallel, the driven gears may be conical. Alternatively, the driven gears may be cylindrical, and each shaft may have thereon a conical gear, the conical gears being sized and positioned to mesh.

Abstract: An apparatus for molding externally ribbed and corrugated thermoplastic pipes, including a pipe die for extruding a parison of a thermoplastic material; moldblock halves circulating in endless paths and cooperating with each other to form a travelling mold; and a means withstanding the hydraulic pressure of molding. The means is represented by yokes having shanks for engagement with complimentary recesses made in the halves. The yokes are provided with rollers guided in parallel paths ensuring that the shanks are driven toward and away from the recesses in a progressive motion without changing their orientation.

Abstract: An improved nonwoven-sheet-making apparatus includes an improved rotatable baffle which has a conical section that whose axis is displaced from the axis of rotation of the baffle. In preferred operation, the baffle deflects, spreads and oscillates a fiber stream as it advances from a spinneret to a moving receiver on which the stream fibers are deposited to form a ribbon which is overlapped with like-formed ribbons to form a sheet. The apparatus is particularly useful in making a less ropy more uniform sheet of flash-spun plexifilamentary strands.

Abstract: A machine for continuously depositing a sorbitol-sweetened hard candy confection which allows the manufacture of such hard candies in a continuous commercial high volume operation. The machine deposits the hard crystalline candies from an aqueous sorbitol solution having a crystalline seeding material therein, such that the sorbitol solution must be maintained in the depositing machine within a relatively narrow temperature range to prevent rapid thickening of the solution at too low temperatures and destruction of the crystalline seeding materials at too high temperatures. The machine includes a heated hopper for the aqueous sorbitol solution and a heated depositing base, through which the aqueous sorbitol solution is deposited through an array of nozzles into candy molds positioned therebeneath. The depositing base is fabricated with heating medium passageways therein, through which a heating medium is circulated.

Abstract: A machine for making funnel cakes includes a holding tank for containing a generally fluid batter, a channel suitable for containing a cooking liquid, and a heater for heating the cooking liquid in the channel to a temperatures suitable for cooking funnel cakes. A plate is disposed at one end of the channel in an upper position adjacent the surface of the cooking liquid. A dispensing head dispenses a predetermined amount of batter from the holding tank onto the plate, and a pneumatic cylinder moves the plate from its upper position in which the batter forms a generally solid, uncooked product to a lower position in which the solid uncooked product floats away from the plate. A submerged track in the channel leads away from the deposit station. The funnel cake is guided along this track submerged in the cooking liquid to completely cook the funnel cake as it moves along the track. At the end of the track, the funnel cake is automatically removed from the cooking liquid.

Abstract: A flat sheet comprising a layer of fat sandwiched between two layers of dough is produced using a coextrusion die having two slot-like orifices. In order to avoid distortion of the sheet due to the dough leaving the center portion of the outer slot-like orifice more quickly than the end portions thereof, multiple augers or other drive means are used and the drive means which drive the dough through the end portions of the orifice operate more quickly than those which drive the dough through the center portion of the orifice. The coextruded sheet may be laminated, rolled and cut to form multi-layered bakery products.

Abstract: Apparatus for making a tubular plastic sheath having one or more imperforate panels around the periphery of the sheath with intervening plastic net connecting the imperforate panels, the apparatus including an extruder, perforating means and stretching means, the improvement being extrusion means to form bands of different thickness asbout the sheath the perforation means being positioned such as to perforate only bands of one thickness.

Abstract: An improved heat transfer or chill roll is disclosed employing a static mandrel, and agitation within the roll together with longitudinal distribution of the heat exchange fluid provides increased uniformity of surface temperature.

Abstract: An apparatus for producing a spunbond by pneumatic take-off and laying of melt-spun filaments comprises a superatmospheric pressure chamber which is connected to the melt spinneret in a gas-tight manner and has discharge orifices for the filaments. Said superatmospheric pressure chamber tapers weekly conically into a drawing cell. The aperture angle of the weakly conical superatmospheric pressure chamber is less than 7.degree.. The filaments are spun in the form of a linear curtain into the interior of the superatmospheric pressure chamber which is just as wide as the curtain. One side of the conical portion and of the drawing cell is moveable and, at the start of the melt spinning, can be moved away from the other wall, so that the start-up of spinning is facilitated.

Abstract: The molding machine of the present invention comprises a screw extruder for extruding plastic material. A plurality of molds are moved one at a time to the outlet end of the extruder for receiving the plastic material therefrom. One end of the mold is open for receiving the plastic material and the opposite end of the mold includes a closure plate covering the end of the mold. The closure plate has a small fill sensing aperture therein. A sensing switch is mounted adjacent the fill sensing aperture and is adapted to sense when molded plastic exits from the fill sensing aperture so as to shut off the extruder and cause the mold to move away from the extruder so that an additional mold can be filled. A cylinder operated closure device clamps the opposite ends of the mold after the mold has moved away from the filling station so as to contain the plastic material within the mold while the plastic material cools and hardens.

Abstract: A rotatable accumulator roll which may move substantially horizontally or vertically is disposed between the die of an extruder and a take-away conveyor to minimize the effects of output surging of the extrudate from the die of the extruder in order to maintain substantially the dimension of the extrudate as delivered to a constant speed take-away conveyor. Variable force is applied to the roll to maintain tension on the extrudate.

Abstract: A die assembly for generating a green tread extrudate for pneumatic tire fabrication is presented. Fundamentally, the invention includes a preform die of fixed configuration, having passages and openings therein for passing both a base stock material and a cap stock material. The openings are separated by a partition. Upper and lower final die plates are then formed to communicate with the openings, one for the cap stock, and the other for the base stock. The configuration of the die portion of the die plates control not only the external geometry of the resulting extrudate, but also the geometry of the junction between the cap stock and the base stock in the extrudate. The invention accommodates a broad range of tire specifications with the simple change of die plates.

Abstract: A food processing apparatus having an extrudate outlet nozzle, an extrudate receiver, the nozzle and receiver being movable to discharge extrudate in a preselected two dimensional line configuration on the receiver, and a programmable controller for controlling the movement to achieve the configuration.

Abstract: An apparatus and method for supporting, guiding and temperature-treating a continuously moving rope of puff extruded farinaceous food material of generally C-shaped cross-section. The moving rope is supported and cooled from below by a stream of air exiting from openings in the upper edge of a former bar, which is positioned below the rope and extends into the concave portion of the cross-section. Air is directed downwardly onto the top and sides of the moving rope from a plenum chamber and nozzle assembly positioned above the moving rope.

Abstract: A differential pressure calibrating tank for sizing and cooling just-extruded duct having electrical cable extending through it includes a duct inlet opening and a calibrator head adjacent to that opening for sizing the just-extruded duct. Differential pressure across the walls of the duct tends to keep the duct in a round cross-sectional shape. Flexible conduit in the duct and fixed relative to an adjacent extrusion die but movable in the tank precludes contact between the duct and cable within it while the duct is still molten. The flexible conduit precludes sticking or adherence between the insulation of the electrical conductors and the duct inner walls. In addition, an improved means is provided for restraining the duct submersed in the water as it traverses through the differential pressure calibrating tank. The means for restraining the duct includes, in part, a perforated tube situated within the tank having an inverted V-shaped channel traversing the length of the tube.

Abstract: A process for producing a foamed synthetic resin body comprising continuously extruding a foamable thermoplastic resin extrudate composition from an extruder die into a reduced pressure zone, subjecting the extrudate to an expansion molding step, a cooling-hardening step and a cutting step while transporting the extrudate through the reduced pressure zone to obtain a foamed piece of predetermined length, shutting off a portion of the reduced pressure zone surrounding the foamed piece from the other portion thereof when the foamed piece has reached a specified position to restore the foamed piece surrounding portion to a normal pressure, subsequently discharging the foamed piece into the atmosphere, and thereafter bringing the surrounding portion into communication with the reduced pressure zone again upon reducing the pressure. Foamed resin bodies of desired expansion ratio and shape can be prepared continuously with high cooling efficiency. An apparatus for practicing the process is also disclosed.

Abstract: Foam extrusion apparatus and methods employing a vacuum chamber at reduced pressure into which foamable material is continuously extruded, hardened and cut to length, means for inventorying a plurality of successively cut lengths in a second chamber then at such reduced pressure, and means for discharging the inventory from the second chamber to the outside after the second chamber has been brought to atmospheric pressure without affecting the reduced pressure in the vacuum chamber. Stacking devices are employed to inventory the cut lengths in either a vertical or horizontal stack for transfer as a stack into and/or out of the second chamber. Provision also is made for accumulating the boards in close but spaced facial relationship with substantially the entire surface areas of the cut lengths exposed to the reduced pressure prior to stacking and discharge to the atmosphere.

Abstract: An apparatus for producing edible food products having a filling therein, the filling being introduced into the center of the food product by an injection nozzle that is contiguous with a nozzle from which the food product is discharged. A conveyor having a descending gradient is associated with the nozzles and advances the food product downwardly to a feeder apparatus which severs product to length. A sensor is positioned between the conveyor and the feeder apparatus to control the speed of the feeder apparatus.

Abstract: A food extruder comprises, a molding plate provided with a multitude of perforations each having a prescribed opening area, a drum having both upper and lower ends open, fitted with said molding plate at the bottom, and containing therein molding food material, a push cover disposed on the molding food material and capable of pressing the molding food material against said molding plate, an oil hydraulic pump having a movable handle lever and supplying oil under a given pressure by moving the handle lever, an oil hydraulic cylinder having a movable piston rod capable of engaging the push cover and causing the piston rod to move so that the push cover engaging the piston rod may press the molding food material against the molding plate by means of the oil supplied by the movement of the handle lever, a regulating mechanism capable of regulating the stroke of the handle lever, and a cutting mechanism for cutting portions of the pressed molding food material extruded from the drum through the perforations.

Abstract: An apparatus for continuously extruding and drying/cooling cereal bran is provided. This apparatus comprises a feed screw extending horizontally from the bottom of a hopper, a main screw arranged in the cross direction to said feed screw at a proper position spaced under said feed screw, a frustoconical main screw top which is secured to the end of said main screw, said top being provided with a flight therearound, an agitating means positioned in said hopper, said means being operated intermittently by way of a ratchet gear system being operated by the revolution of said feed screw, a drying/cooling device vibrating at a certain angle of inclination, and a blower system which is connected directly to said drying/cooling device. With use of this apparatus, it is possible to produce even sized enzyme inactivated pellets of bran having a desired size and strength.

Abstract: Apparatus for continuous thermoforming of sheet material including an extruder, stretching means, a rotary wheel having female mold means thereon and plural plug-assist means interlinked so as to form an orbiting device having the plug-assist members engaging the sheet material about a substantial arc of wheel surface and means to reciprocate the plug assist members into and out of engagement with the female mold means.

Abstract: Extrusion apparatus including rotary shell having plural circumferential rows of extrusion orifices and a stationary inner member, defining with said shell, circumferential channels communicating with said orifices.

Abstract: Turbulence members made of a synthetic resin are manufactured by a method which comprises melting a synthetic resin and causing the molten resin to be rotated around its axis and at the same time extruded in a state wherein the molten resin is spirally twisted by use of an extruding means provided with a rotary nozzle having a slit, passing the extruded molten resin under water in a cooling means thereby cooling and solidifying the extruded resin and drawing the resultant resin with a drawing means. The cooling means is provided with a relatively narrow and relatively wide chamber to facilitate uniformity and efficiency of production.

Abstract: A depositing apparatus for the manufacture of shaped food product includes a hopper having an open top for receiving a prepared mix. Feed rollers positioned within the lower end of the hopper force mix through an extrusion die assembly. The die assembly includes an elongated plate defining a plurality of apertures and supporting a plurality of dies in coaxial relationship with the apertures. A variable restrictor is supported at each of the apertures for varying the effective open area or flow area of the apertures. The flow area may be varied to compensate for variations in weight, consistency or volume of the mix so that relatively uniform weight shapes are deposited onto a conveyor passing underneath the feed hopper. The variable restrictor includes a pair of opposed plates having edges configured in a complementary fashion to the cross-sectional shape of the die. A drive is operably connected to each of the plates so that they may be moved towards and away from each other into the aperture.