Abstract: A die assembly for plastic pelletizing apparatus of the type including a cooling bath into which the plastic is extruded. The die assembly includes a heated main body having first and second oppositely disposed exterior faces connected by a plurality of relatively small extrusion passageways. A layer of thermal insulation material overlies the second face, and a cover member having an outer surface adapted to be exposed to the cooling bath is positioned over the thermal insulation material and joined to the main body. Wear resistant insert members formed from a material having a higher coefficient of thermal conductivity than the material from which the cover member is made extend from the outer surface of the cover member through the layer of insulation into the main body. Extrusion outlet orifices are formed through the insert members and define continuations of the extrusion passageways of the main body.

Abstract: An apparatus for depositing a viscous food mix onto a conveyor which carries the deposits of the food mix through an oven. The apparatus includes a hopper into which the food mix is loaded and an array of dies at the underside of the hopper. Counter-rotating rollers are located within the hopper and they are driven at periodic intervals to force a predetermined quantity of the food mix to be extruded downwardly through the dies at the periodic intervals. A shearing mechanism, which includes two reciprocating blades which are mounted in overlapping relationship, is located at the underside of each die for severing the extruded mix from that remaining in the die. The two blades associated with each die are formed with apertures, the blades being driven in such a manner that the apertures align when the blades are located in a first position and move out of alignment when the blades are driven to move into a second position.

Abstract: A device for granulating strands of thermoplastic materials that are discharged molten from several nozzles side by side, with a cutter roll acting on a counterknife and a feed device filled with cooling water located prior to the cutter roll. The feed device consists of the support face of the counterknife approximately radial to the cutter roll, which essentially completely fills up the space between the nozzle surface and the cutter roll and onto which the cooling water is sprayed.

Abstract: An apparatus for supplying constant amount of ceramic batches includes a cylinder having a cover adapted to be opened for receiving ceramic material in the cylinder and closed and locked when the ceramic material is compressed, a piston telescopically moving in the cylinder with a clearance therebetween, a taper portion provided on the cylinder and tapered toward a discharge opening of the taper portion to compact the ceramic material compressed by the piston toward the taper portion, and cutting means at the discharge opening. With this apparatus, the indefinite ceramic material is automatically transformed into constant shape and constant amount batches which are supplied into a predetermined apparatus simply in short time. The compacting and deaerating of the ceramic batches can be effected during the operation of supplying the constant batches.

Abstract: High melt flow rate polymers are pelletized with greater uniformity and less malformed pellets from underwater extrusion process by die orifices having a narrow preland sufficient to evenly distribute the polymer followed by a wide final hole that forms a polymer strand sufficient to avoid deformation by water currents during pelletization.

Abstract: The mass to be extruded is forced into an extrusion duct (die) (1) so as to make it emerge in the extruded state from the outlet end (3) of the duct in a direction (2) generally-axial of the duct itself. An annular flow of fluid is generated around the outlet end (3) of the extrusion duct (1), oriented in an axial direction relative to the extrusion duct (1), and surrounds the extruded mass, preventing it from bending accidentally. The extruded mass is divided into pieces by a cutting operation (9) carried out within (7) the zone in which the annular flow of fluid acts.

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: On an extruder for extruding foodstuffs a cutting means consisting of rotatable blades (36, 38, 40, 41) is provided. With the aid of these blades an extruded strand emerging from the nozzle (12) can be cut off or structured at the surface. The cutting blades are driven synchronously.

Abstract: A process is described for manufacturing laminated pieces, such as tiles and wall tiles, by means of successive independent extrusion of mortars or concretes, process in which mortar is deposited on some molds, said mortar is extruded and compacted and is dislodged from a transversal strip in the zone of contact of two consecutive molds. Thereafter a complete sheet of mortars is shaped on the first layer, filling in turn the emptied transversal zone and the limited sides and lastly the thickness of the piece is cut in its entirety in a vertical transversal plane.An installation is also described for carrying out the abovementioned process which in essence includes a molding bench with a series of molding heads, a lower pushing train of the molds, a bevelling mechanism inserted between the heads and which is provided with incisor blades and with devices for evacuating and returning the mortar, as well as with a cutting mechanism provided after the last head.

Abstract: A perforated plate construction for the underwater granulating of plastic strands comprising a base member with a melt distribution channel and a plurality of inlet channels connected to the melt distribution channel and to extruder nozzles of a cutting plate. The base plate is heated in the region of the inlet channels. Between the base member and the cutting plate is an insulating layer through which the extruder nozzles extend. In order to permit compensation for thermal expansion in the cutting plate without damage to the cutting plate and the insulating layer, the latter is formed as an air gap which is substantially coextensive with the cutting plate in the transverse direction of the extruder nozzles. The cutting plate is supported on the base plate by a plurality of tubular support elements which are separate from each other and freely extended through the air gap.

Abstract: A device for cutting string cheese at a precise length as the string cheese is extruded. The device is comprised of a trip lever, a pivoting counterweight attached to the trip lever, a support bracket having an upper and lower stop to limit the movement of the pivoting counterweight, a plastic rod connected to the pressure release valve, the pressure release valve which operates the valve actuator when the pressure release valve is displaced from its rest position by the counterweight deflecting the plastic rod as the counterweight pivots, a valve actuator connected to an air supply, a valve connected to the valve actuator by tubing, a pneumatic cylinder connected to a valve by tubing and having a piston, and a knife attached to the piston of the pneumatic cylinder. When the desired length of cheese is reached, the weight of cheese on the trip lever activates the device causing the knife to intersect the path of the cheese and cut it.

Abstract: A die assembly for plastic pelletizing apparatus of the type including a cooling bath into which the plastic is extruded. The die assembly includes a heated main body having first and second oppositely disposed exterior faces connected by a plurality of relatively small extrusion passageways. A layer of thermal insulation material overlies the second face, and a cover member having an outer surface adapted to be exposed to the cooling bath is positioned over the thermal insulation material and joined to the main body. Wear resistant insert members formed from a material having a higher coefficient of thermal conductivity than the material from which the cover member is made extend from the outer surface of the cover member through the layer of insulation into the main body. Extrusion outlet orifices are formed through the insert members and define continuations of the extrusion passageways of the main body.

Abstract: An apportioning apparatus, particularly for dispensing discrete metered quantities of comestible material, such as sausage meat, wherein a cutter is first moved parallel to a surface surrounding a nozzle outlet from which the comestible material is dispensed and wherein after cleanly cutting through the dispensed material emerging from the nozzle outlet, the cutter is advanced in a direction away from the nozzle outlet surface in order to effect a clean cutting process with the cutter then being returned to its initial position to commence a further cutting operation. The cutter is mounted to be driven and guided by an articulation mechanism which includes a power cylinder device and metering gear pumps operate to dispense the comestible material through one or a plurality of outlet nozzles at which the material is cut.

Abstract: An automatic dough cutter that is preferably for use in a mall type cookie store and includes pneumatically operated moving parts. The dough cutter is contained within a single housing that includes a vessel wherein the dough is deposited and is acted upon by a piston traveling therein to extrude that dough through a nozzle, the invention including an oscillating knife that is operated to swing a blade at set intervals through that extruded dough column cutting end sections therefrom. All of which components including covers, a chute, the knife blade, piston, vessel, dough conveying pipe and nozzle that contact the dough are removable for cleaning so as to limit a possibility of bacteria growth and contamination.

Abstract: This invention relates to a process for manufacturing, by injection of synthetic material, objects comprising a film forming an integral part thereof, by means of an injection machine incorporating a mould comprising a punch and a die, and at least one nozzle for injecting synthetic material, wherein a web of the film material is advanced step by step towards the mould and, after advance of said web by a step corresponding to a certain dimension of the film to be cut out, a film is cut out from said web in the desired format, with the result that the film cut out to the chosen format lies between the punch and the die at the instant when the mould is closed.

Abstract: An underwater pelletizer providing more efficient formation of uniform size pellets including the provision of a taper on the die holes so that polymer will freeze near the exit and form an insulated die hole and a resultant cylindrical die hole for smooth polymer flow, axially movable ball bearing assemblies to support the pelletizer shaft in a housing, a threaded assembly with a thrust bearing to axially adjust the pelletizer shaft for compensating for blade wear, radial clearance for the outer race of the thrust bearing to eliminate preloading of the axially movable ball bearings, a gear coupling between the shaft and driving motor to permit axial movement of the shaft for blade adjustment, and a spring support for the pelletizer, all of which cooperate to form an effective underwater pelletizer which will efficiently produce uniform plastic pellets.

Abstract: Multi-bladed disc cutter for cutting into pellets thermoplastic material extruded from a die plate of an underwater pelletizer, wherein the blades of the cutter are integrally formed on the periphery of a backplate and radially project therefrom, the sidewalls of the blades being integrally connected by shroud members to provide added strength against bending and twisting of the blades under load. Perforations are provided in the shroud members and backplate to permit passage of water to cool and flush away the cut pellets. Additionally, integrally formed blades may be arranged in concentric circles inwardly of the periphery of the backplate. The integral of the disc cutters avoids weakening and misalignment of the blades, saves space and permits a greater number of cutting edges than is possible in disc cutters wherein the blades are fastened to a hole by bolts. Casting the cutter integrally with its blades permits off-line grinding for final alignment purposes.

Abstract: An extrusion die assembly for a pelletizing apparatus including a die body, a die insert carried by the die body, the die insert having a die plate with a die plate face and a die plate back surface, there being a plurality of extrusion ports through the die plate face extending from the face to the back surface, the die insert further having a plurality of extrusion port formations such as tubes projecting from the die plate back surface and defining a plurality of extrusion passageways, each of said extrusion ports being in register with a respective one of said passageways, the tubes and the die plate comprising a monolithic structure formed from a unitary piece of material, and a heating jacket formed at least partially by the die body, at least a portion of the tubes being received in the heating jacket.

Abstract: An apparatus for granulating thermoplastics materials comprising a nozzle plate and a cutter device in which the spacing between these integers can be pre-set and accurately maintained. This is achieved by isolating the component parts of the granulation apparatus, particularly a housing for the cutter device, which is subjected to variable thermal expansion, from the components which locate the cutter device in front of the nozzle plate.

Abstract: A granulator for forming granules of cross-linkable plastic compounds in which a screw extruder extrudes the compound into the smaller diameter end of a funnel-shaped, annular conduit, the other end of the conduit facing a die with circular arrays of through-holes. The compound which passes through the through-holes is cut into granules by rotating blades having air nozzles which remove particles of the compound from the blades. The granules are received in a chamber from which they are removed pneumatically. Where the annular conduit meets the die, there are channels within and outside of the arrays of through-holes which lead to the outside of the granulator and which provide conduits for removal of compound which does not directly impinge on the entrances of the through-holes which are specially shaped to avoid accumulation of the compound between the through-holes.

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: The die includes a body provided with a plurality of polymer flow channels and a plate fixed to the front surface of the body and bored at locations corresponding to each channel. An insulating layer is positioned between the body and the bored plate. The channels include a thermoregulating system for the die body. A plurality of nozzles is provided, with the nozzles being rooted inside the die body at locations corresponding to the channels. The nozzles protrude from the body itself to cross through the insulating layer and the bored plate. The nozzles are made of a metal having a thermal conductivity higher than 60 W/m.degree.K.

Abstract: This invention relates to means for cutting a mass of material, such as dough or ground meat, into pieces of predetermined shape and of substantially uniform size as the material is fed from a hopper on to a conveyor belt.

Abstract: An extruder head 1 for molten material such as polymer has a die plate 6 orificed at 5, rotating blades 11 sweeping over the die plate to operate and fling outwards emerging short lengths 22 of molten material, and a surrounding freestanding wall or curtain of high-pressure water 14 around the blades to entrap and cool separate cut lengths without agglomeration. The wall of water can be formed of merging, or overlapping, flat jets from nozzle 13, and must be essentially uninterrupted viewed from the center of the die plate.

Abstract: In the case of a process for producing pourable spherical-segment-shaped packing material particles (18) made of plastic which have an external convex and an internal concave surface, the plastic material is mixed with additives, such as bubble forming agents, coloring pigments and similar agents. The plastic material is fed, by means of a feeding funnel (17) into an extruder (14) through an opening in a bush (13) surrounding the extrusion screw. The plastic material plasticizes over the course of the extruder (14) and, because of the difference in speed existing over the cross section of the mass, comes out of an opening (15) in the die with a bent surface. The plastic material is cut off directly at the opening (15) of the die and before any considerable expansion has taken place. Before the processing of the plastic granules in the extruder (14) a bubble-forming agent (nucleation agent) is applied to their surface in a drum (5).

Abstract: A method for manufacture of aerated concrete or other similar calcium silicate hydrate products. An optimal utilization of the investment for erection of the plant is achieved by keeping the time for the stiffening of one cast body shorter than the pacing time between two consecutive pourings of mix. A suitable way to achieve the short stiffening time is to use an extremely highly reactive binder.

Abstract: A process for the production of expandable granules of thermoplastic polymers comprising: (a) the extrusion of the polymer in which an expanding agent is incorporated, through a die-head in order to obtain an expandable polymer; (b) immediate cooling of this polymer in water, kept at a temperature at which the polymer remains in the non-expanded state, but not lower than the Tg of the expandable polymer; (c) cutting of the polymer to granules in water immediately at the outlet of the die-head, and (d) annealing of the thus obtained granules, by slow cooling in a temperature range comprised between at least +5.degree. C. and at least -5.degree. C. the Tg of the expandable polymer, wherein the cooling and the cutting of the polymer to granules and the annealing thereof are carried out under pressure.

Abstract: A machine is provided for forming a supply of jellifiable fluid into jelled spherical droplets by pouring that fluid out of a housing through nozzles while intersecting the path of the fluid with knives rotating in a horizontal plane on a rotated axle. Valves for the nozzles and the rotational speed of the axle are subject to adjustment. A mechanical arrangement is provided for holding all of the valves open to a desired degree against a closing force provided by springs. A jellifying agent is fed through the axle and out onto the knives so that jellification begins to occur immediately as the jellifiable fluid is cut into segments by the rotating knives.

Abstract: Apparatus for cutting thermoplastic filaments or rods with multiple blades in a granulation head of the type which is completely immersed in a cooling liquid, the blades acting with an extrusion die having extrusion orifices arranged in one or more rings centered on the axis of the die and coaxial with a rotary cutting means carrying cutting blades, wherein the cutting blades have an extrados surface inscribed within a regular convex polygon having an apex angle of 7.degree. or less and an intrados surface having a point of inflection situated at a distance between one quarter and one half of the width of the blade, the remainder of the intrados beyond the inflection point having a profile pattern similar to that of the extrados, and methods for chopping thermoplastics with such apparatus.

Abstract: A method for obtaining strips from a material, particularly a latex coagulum, is characterized by raising the material with a fluid via a solid piece arranged below the material and placed directly in contact with the material, and cutting the material into strips above the solid piece by the use of cutting means.The invention also concerns apparatus for carrying out this method, as well as the strips obtained by this method or with the apparatus.

Abstract: A machine for manufacturing croquettes from a source of elastic food mass continuously discharged from a nozzle assembly having a reciprocating chopper controlled by sensors for severing the mass into croquettes, a plurality of conveyors for moving said croquettes through tunnel assemblies for compressing said croquettes into a desired shape and a shaker assembly for breading said croquettes and providing a frictional means for rolling said croquettes through said tunnels.

Abstract: A sealing profiled strand of elastomeric materials provided with sealing lips along portions of the strand. The strands emerge from the nozzle or orifice of the extruder, at which point they still have a complete cross section. While still in the plastic state, the strands are cut by a transversely movable cutting knife which is curved in conformity to the outer contour of the strand. The strand is cut pursuant to a prescribed pattern in such a way as to remove portions of the sealing lip.

Abstract: The pelletizing die for a synthetic resin extruding machine has a sintered hard tip which is shaped such that the outlet side is small as compared to the inlet side. A sintered hard tip pressing plate is formed to surround the sintered hard tip, and the sintered hard tip and sintered hard tip pressing plate are fixedly adhered to the die body by solder.

Abstract: A method for obtaining strips from a material, such as a latex coagulum, is characterized by floating the material in a fluid, such as water, and cutting the material into strips from a portion of the material located above the fluid, for example, by means of a band saw.

Abstract: An extrusion die having a die face with plural apertures therethrough, the die face having a contour such as to mate with a non-linear cutting edge of a rotary cutter mounted for rotation about an axis parallel to the die face.

Abstract: A manually adjustable blade assembly for an underwater pelletizer to enable radial adjustment and axial adjustment as well as maintaining parallelism of the blade assembly to the die cutting surface through the use of a shaft bearing support for the driven cutter blade assembly which enables accurate and positive adjustment of the rotating cutter blade assembly in relation to the cutting surface of a die in an underwater pelletizer.

Abstract: A continuous process for carrying out the process for preparing substantially dust-free thermoset plastic particles from soft plastic mixtures of reactive thermoset plastic-forming materials and volatile components. These soft mixtures which quickly harden after drying are extruded under low pressure and are granulated by cutting while soft. To eliminate excessive amounts of dust the invention uses a premixer and a worm conveyor in a special housing and the conveyor flights are at a low angle of inclination to the horizontal to extrude the soft mixture at low pressure. The soft material at the outlet of the special material is pushed out of the nozzle under a worm rotation which is less than 25 r.p.m. and a pressure is of the order of one pound after which the material is conveyed pneumatically to a cooling station to harden and after cooling is cut into uniform size particles by knives without the formation of dust.

Abstract: A sealable discharge die for thermoplastics, comprising a housing, a dieplate which closes the latter except for perforations for discharge of the plastic melt in strands or filaments, and a perforated plate located immediately below or above this dieplate, one of the plates being slidable or rotatable and the perforated plate having orifices which can be brought into alignment with the perforations of the dieplate.

Abstract: The invention relates to a process and an equipment to obtain a plate provided with holes directly by extruding plastic materials. The process consists in submitting the material coming out of an extruder head to expansion stresses according to more than one direction and in executing a plurality of perforations in said material submitted to expansion by means of perforating means; the equipment consists of a plurality of perforating devices provided with a reciprocating motion so that they can reach an interference position with respect to the material coming out of the extruder head and of means which, acting at the same time as the perforating devices, are suitable to produce an expansion of the extruded material.

Abstract: A pipe die for an underwater pelletizer is provided in which a nozzle plate is provided on the surface of a pipe die, the nozzle plate having a hole coaxially with and of the same diameter as a pipe of the pipe die. The nozzle plate is made of a material of the same quality as the die body and is provided with a hardened layer at its cutter side surface. Replacement and repair of the nozzle plate is improved by connecting the same to said die body by bonding the whole junction plane therebetween.

Abstract: The fluid loss and viscosity loss characteristics of a water expandable bentonite clay are substantially improved by extruding the clay through die openings while, at the same time, passing a wiper or scraping blade across the entrance of the die openings. In this manner, very inexpensive and low grade clays can be substantially improved and thus modified making such clays acceptable in fluid loss and viscosity for use in a drilling fluid or mud.

Abstract: In a face cutting apparatus having an extrudate feed means with an extrudate delivery end, a die plate and a cutter, an apparatus and method for controlling extrusion back pressure includes a die having a plurality of extrusion orifices through which a heat plastified material is adapted to be extruded, having a varying orifice density along the length of the die, a pressure sensing device for sensing the pressure adjacent the delivery end and an apparatus for moving the die relative to the delivery end in response to changes in the pressure adjacent the delivery end to align a die area of differing orifice density with the delivery end in order to adjust the flow rate of heat plastified material through the die and the extrusion back pressure.

Abstract: A machine for extruding and cutting yeast raised dough for making solid donuts or bismarcks is described herein which employs a discharge tube angled from the horizontal and changes within the discharge tube and to the discharge tube outlet in order to create a circular donut or other desired shape.

Abstract: A plastified mass of thermoplastic material containing an expanding agent is extruded and sliced into pieces by shaped cutting edges to produce--on expanding--elements which are shaped in a billowed manner or a double-bubble manner. The billowed elements have an inturned peripheral edge which prevents nesting and interlocking together when used in a shipping container. Similarly, the double bubble elements preclude nesting and interlocking.

Abstract: An apparatus for sealing tarts or pies, particularly almond tarts, comprises a plate intended to receive the product to be subjected to the confection process, a suitably shaped mould arranged above said plate and fixed to a shaft capable of making an ascending-descending movement with a means for applying pressure to said product and a means associated with said mould and consisting of lateral arms carrying at their ends means for nipping and cutting into the periphery of the product to be obtained, said arms being activated in such a way that said nipping and cutting means are applied to said product when the mould is in its lower position.The apparatus enables a sequence of operations hitherto carried out manually with several different tools to be performed simply, economically and automatically.

Abstract: A food extruder wherein an extruder plate has perforations between its inside and outside surfaces and is sandwiched between a food chamber and a fluid housing is disclosed. Food enters the chamber and is passed through the perforations in the extruder plate. A rotary knife within the fluid housing cuts the food into portions of preselected size immediately upon their extrusion. A second rotary knife contained within the food housing clears any food blockage occurring in the vicinity of the interior surface of the extruder plate. Fluid is directed through the fluid housing past the exterior surface of the extruder plate for the purpose conveying food portions thus formed to the next stage in processing in a manner which prevents food portions from adhering either to one another or to elements of the food portion maker.

Abstract: This invention is concerned with an improved construction of resin pellet producing machine so adapted that a length of resin material extruded in a circular shape through a die of an extruding means is cooled down by a quantity of cooling water jetted forth from a cutter nozzle and at the same time cut continuously to form a plurality of resin pellets thereby to make it unnecessary to appeal further to a cooling water tank.

Abstract: Apparatus is provided for the recovery of dry polymer in porous crumb form in which pellets of polymer containing volatile material from a cutter located at the output end of an extrusion device are conveyed by a first gas stream from the cutter through a first pipe means to a cyclone separator. A second pipe means is supplied with and conveys a second gas stream to the cyclone separator, both the first and second pipe means terminating at and forming an entry to the cyclone separator in which the pellets are cooled and separated from the gas streams and volatile material. The pellets are then removed from the cyclone separator and conveyed to weighing and packaging means.

Abstract: A granulation apparatus in which a conical chamber having a downwardly and outwardly inclined wall is provided for collecting cut granules. The wall is covered with a flowing, circulating film of water, such film being of uniform thickness and circulating quickly. An annular water channel is provided around the cylindrical or conical chamber for collecting the granules, the annular channel being fed through a tangential water inlet. A flat, annular horizontal acceleration chamber is disposed in the upper region of the annular channel and communicates with the channel through an annular aperture formed in the upper radially outward region of the annular channel. At its radially inner periphery the acceleration chamber communicates with the chamber through an annular aperture.The disposition of the inlet, the channel and the acceleration chamber cause water flowing into the chamber to be subjected to centrifugal force whereby the film of water remains closely adjacent the wall and is of uniform thickness.

Abstract: A granulation apparatus which operates in the manner of a water-ring granulator comprises a perforated plate and rotatable cutter tool for granulating material fed through the plate. A recess is provided beneath the perforated plate which is concentric with, but inwardly of, a collection chamber for collecting the granulated material. The recess is dimensioned so as to have a cross-sectional area at least equal to the surface area of the plate.