Abstract: In an extrusion die, restricted flow of material from large to small feed holes is relieved by the formation of a transition zone within the die. The transition zone is formed by extending either or both of the large and small feed holes so that they axially overlap.

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: The present invention is direction to a unique extrusion die which may be employed in the extrusion of materials wherein a specific desired cross section is sought. The die comprises a center plate and one or more outer annular parts. Shaped holes, from which the material being extruded is emitted, are aligned at the respective edges of the center plate and the surrounding outer annular part. The die may be fabricated utilizing conventional equipment and may be employed to achieve extremely detailed cross sectional configurations of extruded materials.

Abstract: A centrifugal pelletizer has a hollow electrically and thermally conductive rotor with a series of orifices along its outer rim portion for centrifugally powering strands of heated thermoplastic material from a body of said material in a flowable state within the interior of the rotor. A knife mounted on the frame adjacent the rotor orifices severs the strands into pellets of a predetermined length. A molten material feed tube with fins therein at the exit end to divide the flow extends into a rotor housing to direct flow in a uniform manner to an axially opposite impeller on the rotor and control mechanism, sensitive to the temperature of the rotor adjacent the orifices, controls the supply of current to electromagnets, which have a peripheral magnetic flux conducting plate system extending to and forming a part of the housing creating a flux field which is interrupted by the spinning rotor to induce currents in the rotor which heat it according to the temperature sensed.

Abstract: A cooking utensil comprising a pan with a flat bottom and vertical side means formed integrally with said bottom, and an array of evenly spaced substantially uniform holes formed in a portion of said bottom to provide a food extrusion area, the remaining portion of said bottom providing a food holding area.

Abstract: A comestible extruding apparatus including a pressure chamber having an outlet, a hollow extrusion die journaled in the outlet, and a hollow seal force fit in the outlet and having a neck extending slidably into the hollow die, the neck and die combining to define a rotary seal for the comestible.

Abstract: The material flow within an extrusion die body is adjusted by a metering device to alter the product perforation pattern of an extrusion product produced in the extrusion die without changes of or modifications to any of the various other parts of the extruder system being required. The extruder system is an apparatus which includes, in addition to a hydraulic cylinder powered press, a basic extrusion die, a die body, a set of perforation forming die pins and a ported cover or pin support plate.

Abstract: Spinneret orifices the planar cross-section of which defines intersecting quadrilaterals in connected series, the improvement being that one or more of the defined quadrilaterals is or are characterized by its or their width being greater than the width of the remaining quadrilateral(s), with the wider quadrilateral(s) defining body sections and with the remaining quadrilateral(s) defining wing member(s).

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: The adaptor, which can be applied to the delivery end of the extruder barrel, comprises a plurality of ducts for feeding corresponding extrusion heads, radiating from a common manifold chamber and each provided with a butterfly valve for the mutual adjustment of the flows of thermoplastic material in the respective ducts. Preferably the ducts with their respective valves are identical to each other and the valves are adjusted to give extruded products which are identical to each other.

Abstract: Spinneret orifices the planar cross-section of which defines an elongated slot having a plurality of wing member bar slots intersecting with the elongated slot at spaced intervals along the axial length thereof, and multiple intersecting body section bar slots intersecting with the elongated slot and intersecting with each of the other multiple intersecting body section bar slots at the elongated slot.

Abstract: A kitchen appliance for and method of making farinaceous products such as spaghetti, fettucini, macaroni, manicotti, lasagna, pizza crusts, taco shells, bagels, breadsticks and like dough products, use a mixing chamber for receiving the product ingredients, a rotary mixer for mixing the ingredients, a rotary extruder for extruding the mixed ingredients through an extrusion die at a discharge outlet, and a reversible motor drive for jointly turning the rotary mixer and rotary extruder about the same axis of rotation in either circumferential direction. In one direction, only mixing is effected; in the opposite direction, extruding is effected. An arrangement for and method of adjusting the thickness of the extruded farinaceous product are also described.

Abstract: A spinneret plate the outlet orifice of which is made up of slots, at least two of the slots being arc shaped, useful to produce textile filaments that are readily fracturable in a fluid jet to produce a yarn having free ends.

Abstract: A spinneret plate having capillaries of different length, and preferably capillaries of different cross-sectional shape. The spinning plate has a boss through which some of the capillaries pass.

Abstract: An extrusion die for a pasta-making kitchen appliance includes a first part which has a perforated main portion and a second part which has a support portion received in a recess in the first part and having at least one projecting portion which extends into the associated aperture of the first member. Advantageously, there are as many projecting portions, all supported on the support portions, as there are apertures, and the projecting portions are received, in a one-to-one relationship, in the respective apertures. At least one fin extends radially of each of the projecting portions and contacts the surface bounding the respective aperture to support the projecting portion in such aperture. The support portion may include a plurality of discrete legs, some of which are connected with the support legs of the other pins or projecting portions, while the remaining legs engage the internal surface of a collar portion of the first member which surrounds the recess accepting the support portion.

Abstract: A method and apparatus for extruding a radiant energy heat exchanging panel structure having a multiplicity of parallel passages extending longitudinally therethrough defined by a multiplicity of longitudinally extending integrally interconnected exterior and interior thin wall sections, in which the temperature of the plastic material moving longitudinally away from the extrusion outlet is reduced by flowing fluid into said passages and on the exterior sides thereof, by contacting the exterior sides with pairs of cooled rollers, by rolling a liquid medium upon the operative exterior side, and by flowing a liquid spray thereon to provide a radiation absorbing coating on the exterior side of the panel structure opposite from the operative side thereof. Certain of the flowing fluids are reactant fluids which chemically react with the hot plastic material or condense thereupon to form molecular coatings thereon enhancing the properties thereof as a panel structure.

Abstract: A device for filtering a liquid, particularly molten polymer, removes incompletely molten polymer, foreign matter, aggregates of various additives and the like from the molten polymer prior to further processing of the liquid such as extrusion through a spinneret plate. The device comprises a housing provided with a liquid inlet and a liquid outlet and, positioned between the inlet and the outlet, a filter pack built up of a number of filtering disks and supporting disks. The disks are so arranged the liquid to be filtered is caused to flow between a center portion and an outer surface of the filter pack. On the filter pack there is placed a piston for applying a compressive pressure to the pack. The piston is displaced and acts to compress the filter pack on a liquid supply side under the influence of the pressure of the liquid to be filtered.

Abstract: A noodle making machine including a cylindrical dough magazine with a powered plunger therein and an apertured expressing die on the end of the dough magazine, wherein the expressing die can be removed from the end of the cylindrical magazine, the magazine removed from the remainder of the machine to expose its interior and the surface of said plunger and its supporting rod, the several parts being quickly and readily separable for quick and easy cleaning to comply with Health Department rules and ordinances.

Abstract: The invention relates to the manufacture of a body of a cellular structure by extruding a ceramic material through a die. The die comprises a succession of coaxial components (6, 10) fitted one round another, with two adjacent components defining between them longitudinal ducts (2) whose downstream ends communicate with an annular duct (3) and wherein the bottoms of said coaxial components fitted one round another have essentially radial notches (4) level with the annular ducts, the width of said notches being less than that of the longitudinal ducts, so that the ceramic material which flows through said longitudinal ducts is evenly distributed in the annular ducts and in the radial notches to form a body with a cellular structure directly on extrusion.The invention has application to thin-walled honeycomb ceramic structures.

Abstract: Certain portions of the discharge slots of an existing extrusion die for forming honeycomb structures are blocked off by selectively positioning a plurality of tabs within such discharge slots so as to convert the cellular configuration originally formed by the discharge slots of such die to that of a desired cellular configuration.

Abstract: Uniformity of flow rate through an extrusion or pelleting die is provided through each of a plurality of orifices of substantially equal cross sectional area by providing a die in which the length of a narrowed portion of a downstream passageway associated with each orifice is chosen to provide the desired flow characteristics.

Abstract: A spinnerette plate having multiple capillaries per counterbore can be effectively used to melt-spin fusion melts of acrylonitrile polymer and water without sticking together of individual filaments.

Abstract: A die for extruding a honeycomb structural body, all parts of which are uniform in mechanical strength, is disclosed. The die is provided with guide grooves between discharge slits and feed inlets for raw stock, said discharge slits having a cross-sectional shape corresponding to that of the honeycomb structural body and said guide grooves having a cross-sectional area larger than that of the discharge slits.

Abstract: In an improved die-nose assembly for a melt-blowing process wherein molten resin is extruded from a series of die-holes while heated gas is blown out through slots on either side of the die nose associated therewith, spacers which are movable widthwise of the die assembly are provided in the gas slots to provide effective uniformity in the gas streams across the width of the die.

Abstract: A die for extruding a honeycomb structural body for a catalyst support, which catalyst removes harmful gases in exhaust gas, composing of an integral metal block provided with(a) one surface provided with a plurality of circular perforated holes A having a given depth and a given pattern and a grid-formed slits conforming to a cross-sectional shape of a honeycomb structural body to be extruded and(b) another surface provided with a plurality of perforated holes B having a given depth and a given pattern,said slits connecting to the holes B, having a smaller width than a diameter of the holes A and passing through center of the holes A. Said die is manufactured by providing the slits after perforating the holes A.

Abstract: There is disclosed an apparatus and method for simultaneously forming a flow of extruded material, especially dough, into a plurality of downwardly extending ribbons each at a substantially uniform flow rate and for controlling the tendency of such ribbons to curve as they emanate from the die. The apparatus is an extrusion device which includes a housing adapted for attachment at the exit of the extruder barrel and includes an inlet passage for directing the flow of extrudant downwardly and an outwardly flared section in fluid communication with and downstream of the inlet passage. A die plate is supported by the housing downstream of the inlet and across the flared section and includes a plurality of dies having orifices for forming the extrudant into a plurality of ribbons. A generally cone-shaped mandrel is supported within the flared section of the housing in spaced apart relationship from the die plate surface and the flared section wall defining an annular flow channel for the extrudant.

Abstract: An apparatus for manufacturing a vitreous blast furnace slag, comprises a rotary drum having a circular barrel formed by endlessly connecting a plurality of rectangular cooling metal members, each of said cooling metal members having a plurality of narrow and deep cooling grooves on the outer surface thereof for rapidly cooling and solidifying a molten blast furnace slag into a vitreous blast furnace slag; a driving mechanism for rotating said rotary drum; a molten blast furnace slag feeder arranged above said rotary drum for pouring a molten blast furnace slag into said cooling grooves; a stripper stationarily arranged at a prescribed position adjacent to the inner surface of the barrel of said rotary drum, for taking out a cooled and solidified vitreous blast furnace slag in said cooling grooves; and, a cooling tank containing cooling water, arranged below said rotary drum so that the lower portion of the barrel of said rotary drum is immersed in the cooling water for cooling said cooling metal members heat

Abstract: A new extrusion die head and method of making the same is provided that permits two strips of elastomeric material to be extruded simultaneously and one above the other from a single core of extrudate. The head is particularly useful for extruding sidewall strips in the manufacture of pneumatic tires. The head design has features common to both conventional strip extruding heads and to heads for extruding tubular shapes, commonly called tuber heads. However, the head is quite different from both the conventional strip extrusion heads and the conventional tuber heads, and has the advantage that it permits two strips to be extruded simultaneously through passages that are relatively short in length and are no wider than the width of a single sidewall strip. The design of the head and the method of making it are such that the extrusion passage surfaces can be easily machined to provide excellent flow characteristics, and the entire head is easily fabricated and cleaned.

Abstract: The method for making bicomponent filaments from two spin dopes wherein the dopes are assembled into alternating layers in a feed tube leading to a transition tube connected to a conventional spinnerette, the layers then being fed through the transition tube and the spinnerette to form filaments. The feed tube has a constant cross-sectional area along the length thereof and the transition tube has a parabolic configuration such that the linear flow rate of the assembled dope layers passing through the transition tube decreases at a uniform rate as the cross-sectional area of the stream of assembled layers is increased to the cross-sectional area of the spinnerette, to thereby maintain the distinctness of the interfaces of the layers and thus insure that good bicomponent filaments will be formed.

Abstract: Apparatus for the extrusion of a flowable mass onto a conveyor, comprises first and second cylindrical containers. The first container is disposed for rotation about a longitudinal axis and includes first passages for depositing the flowable mass. The second container includes a wall portion which contains a plurality of second passages. The wall portion is disposed against the first container, the latter rotating relative to the second container so that the first and second passages are periodically aligned to enable the flowable mass to be deposited onto the conveyor. The first and second containers define a gap therebetween which creates a negative pressure to suck-in excess mass from the outer periphery of the apparatus. A spatula is provided to push the mass into the gap.

Abstract: Extrusion die assembly for forming honeycomb structures, which comprises a die having a discharge surface provided with grid-shaped slits for discharging a honeycomb shaped body and an inlet surface provided with a plurality of independent feed inlets, a mask having an orifice for determining the outer shape and dimension of the extruded honeycomb structure and a ring having an orifice for restraining supply of the batch material into the feed inlets at the periphery of the inlet surface.

Abstract: A spinerette assembly wherein tapered passageways and distribution chambers of diminishing length are so arranged as to provide equal back pressure over all orifices thereby providing extrudates of improved uniformity of diameter after stretching.

Abstract: A method and mechanism for continuously making film with one or more fastener profiles thereon to be used for making reclosable plastic bags. The film is extruded through a T-shaped head having a thin slot die opening, and at least one fastener profile is extruded through a preform die block positioned so that the film and profile will engage and fuse to each other while the plastic is still in the state of fusion. The die block is mounted adjustably to be moved into different positions along the film head with the positions varying across the film width to control the location of the profile relative to the edges of the film or relative to other profiles on the film, with the width of the film also being controllable.

Abstract: An extrusion head for producing synthetic and the like textile yarns comprises a channel for feeding the plastics material stock to be extruded, which channel opens into an extrusion chamber having an annular shaped die provided thereon with a plurality of calibrated holes evenly distributed with respect to the feeding channel, so that the distance of each hole from the feeding channel and the extrusion conditions are the same.

Abstract: A spinneret cleaning device for removing deposits quickly, reliably and uniformly has an adjustable force flat plane cleaning blade.

Abstract: A spinnerette plate having multiple capillaries per counterbore can be effectively used to melt-spin fusion melts of acrylonitrile polymer and water without sticking together of individual filaments.

Abstract: A spinnerette (60, 70, 80) is provided for use in a process in which one or more ends of individual filaments are extruded from a plurality of orifices (61, 71, 81) of the spinnerette (60, 70, 80). The orifices of each end are arranged in a pattern which bounds a predetermined area of the spinnerette. The pattern consists of at least 5 substantially parallel rows, the orifices being equispaced within a given row for substantially all of the rows. The perpendicular distance between rows going from one side of the pattern to the other on an average progressively increases per row by a percentage, preferably about 1 to 10 percent, of the orifice spacing on the row closest to a line parallel to the rows and bisecting the pattern.

Abstract: A spinneret assembly is disclosed that comprises thin individual spinnerets simultaneously exhibiting a great mechanical resistance to pressure and a great number of orifices, in which:the relation between the total piercing area and the total surface of the assembly is between 35% and 90%;the relation between the total number of orifices and the total surface of the assembly is between 0.2 and 25 orifices per mm.sup.2 ; andthe relation between the total surface of orificesand the surface of the assembly is between 0.5% and 40%; the spinneret assembly comprising a rigid supporting plate pierced with holes designed for the passage of the spinning material, every hole being coaxially associated with an individual spinneret and having at least one portion the cross sectional area of which is less than that of the surface of the respective spinneret.

Abstract: Extrusion dies for extruding honeycomb structural bodies which comprise a plurality of cell blocks having a cross sectional shape conforming to cells of the honeycomb structural body, a spoke supporter, and spokes, one end of which is fixed to the cell blocks and another end of which is integrally secured to the spoke supporter, said adjacent cell blocks forming discharge slits conforming to the cross sectional shape of the honeycomb structure, and said spoke supporter being provided with a plurality of feed inlets having a larger diameter, which are perforated from one end surface of the spoke supporter toward the cell blocks and a plurality of openings having a smaller diameter, which are perforated from another end surface of the spoke supporter to the feed inlet and connect to the feed inlet.

Abstract: A method is provided for forming an extrusion die of the type used to form a ceramic monolith having thin walls defining a multiplicity of parallel tubular passageways with at least about 100 passageways per square inch, the die having a feed face and a discharge face, the feed face having a plurality of feed holes extending partially through said die and interconnecting with a network of grid slots in the discharge portion of said die formed by a plurality of grid pins which define the slot width and the wall thickness, shape and size of said passageways. The method involves the steps of forming the width of the slots larger than the desired wall thickness of the passageways, and metal plating the slot defining surfaces of the grid pins to obtain the slot width corresponding to the desired wall thickness. Plating is accomplished by the electroless plating technique using a metal selected from the group consisting of nickel, chromium, cobalt and cobalt-nickel.

Abstract: A novel spinneret orifice defines in the plane of a spinneret face an elongated slot formed by a series of repeating parallelograms connected in end-to-end relation together and alternating in off-set relation along the major axis of the elongated slot, each parallelogram having a pair of opposite side walls "a" substantially parallel to the minor axis of the elongated slot and a pair of opposite side walls "b" substantially parallel to the major axis, and wherein a side wall "a" of one parallelogram and the side wall "a" of the adjacent off-set parallelogram lie on a common line and define the angle of the minor axis relative to the major axis of the elongated slot.

Abstract: In a thermoplastic extrusion system where a single extruder feeds molten polymer through a manifold to a plurality of separate extrusion orifices, a valve system is provided which distributes and regulates the flow of the molten polymer to the individual extrusion orifices.

Abstract: An extrusion device for forming and shaping food product to a chosen cross section area and shape such as the filling for Chinese egg rolls, the product requiring mild compressive action for proper binding, and wherein mild shear forces acting on the product are effective to cause separation, breakup and damage. The apparatus comprises a housing with means for forcing the food product through the housing and in which the housing contains means defining a first section receiving a flow of the food product which initially shapes the flow into a predetermined shape and cross section, followed by a stabilizing section smoothly continuously transitioning from the first section and which has an outlet whose dimensions transverse to the longitudinal direction of movement of the product do not increase. By combining the first section with the stabilizing section food product is first shaped and then gently handled so that it binds together properly.

Abstract: A spinneret for the production of hollow filaments that includes a cylindrical shaped insert swaged into each passage of the spinneret to effect a seal between the insert and spinneret. The insert is constructed to contain the polymer entirely within the insert to prevent leakage of polymer into the core gas supply passages of the spinneret.

Abstract: Synthetic filaments having a circular cross-section are manufactured by melt-spinning from spinneret openings having likewise a circular cross-section which are provided with lateral arms distributed over their circumference and ending in the circular cross-section area at an about right angle. The lateral arms need not cover the complete length of the spinneret holes, but only the outlet opening of the spinneret holes.

Abstract: A process and die are disclosed for preparing a foamed article of thermoplastic resin having a particular cross section configuration. The die of the invention is provided with a plurality of apertures in its face through which the resin is discharged. The apertures in the face of the die are distributed in a shape corresponding to the cross section of the foamed article which is produced. The apertures are further divided into a plurality of groups in which there is at least one zone which is void of apertures so that the apertures in the same group are actually restricted to a narrow band. The zone on the surface of the die which is void of apertures has a thickness more than twice the average distance between two adjacent apertures belonging to the same group.

Abstract: Fusion melts of acrylonitrile polymer and water are effectively melt-spun through spinnerettes of high capillary density without sticking together of the individual filaments.

Abstract: Melt-spinning of a fusion melt of an acrylonitrile polymer and water through a crowded hole spinnerette plate having small orifice diameters is achieved using low molecular weight polymer to provide fiber of desirable physical properties.

Abstract: Scraping agents such as silicone oils are applied, preferably continuously, to the circumference of the spinneret between the outer edge and the spinning holes nearest to it. Application is effected by means of a ring of an absorptive, surface active material, e.g., a ring wick located in a groove or a ring chamber which may be fitted with feed lines to supply the scraping agent.

Abstract: This invention refers to a pelletizing and feeding-out device for fodder with varying degree of moisture, so called semi-moist fodder. The device can also take care of fish waste and other waste products, which can be used as fodder. The device comprises a rotatable container for the fodder, at the bottom of which a feeding-out device is arranged comprising a feeding chamber non-rotatably connected to the container and a feed screw extending through the feeding chamber and which does not take part in the rotation of the container and feeding chamber. The feed screw presses the fodder through a number of holes in the feeding chamber, at which the fodder is cut into suitable pellets or pieces. The container is further provided with at least one internal mixing arm constituting a support for the end of the feed screw located inside the container.