Abstract: An apparatus that dispenses a food substance has a housing and a barrel removably connected to the housing. A rod connected to a plunger is disposed within the housing and the barrel. A drive mechanism including a dual-direction electric motor is located in the housing. The drive mechanism actuates the rod so that the plunger is advanced in the barrel to dispense the food substance. The drive mechanism includes a nut housing having an inner passage housing a nut positioned between a pair of compression springs. The nut is restricted from rotational movement relative to the nut housing but may move a limited distance vertically. The rod is positioned through the nut housing. The nut travels along the rod as the rod moves within the apparatus.

Abstract: A material handling exit section in the nature of a material extruder and mold combination for shaping the material exiting a hydrolyzer, comprising an extrusion chamber and a plunger assembly attached to the extrusion chamber and further including a working cylinder having a cylinder shaft and a ram operably connected to the shaft enabling the ram to move the material within the extrusion chamber upon actuation of the cylinder and the extension of the shaft therefrom.

Abstract: A pump assembly for dough-like material wherein a roll feeder delivers the material, under pressure, to a progressing cavity pump. In that process, the roll feeder also de-airs the dough. In preferred embodiments, the progressing cavity pump may be interconnected to the roll feeder by a screw feeder. The pump assembly may be employed to pump material from place to place, or alternatively, to extrude a pumped material, including delivering the pump material to an extruder.

Abstract: In an extrusion method and an extruder, an annular material flow is created by extruding material into an annular extrusion channel (6). The extruder has a tubular filtering unit (7) arranged to the annular extrusion channel (6), whereby the annular material flow flows through the tubular surface of the filtering unit (7).

Abstract: An apparatus is provided for making an unvulcanized rubber tape having a finished thickness TO in a range of from 0.3 to 1.5 mm, comprising an extruder which includes a passage for unvulcanized rubber defining an outlet for the extruded unvulcanized rubber, and a pair of calendar rollers disposed near the outlet for adjusting the thickness of the extruded unvulcanized rubber passing therebetween, wherein the passage is comprised of a transforming part having an inlet for the unvulcanized rubber at its upstream-side end, and a thinning part on the downstream side thereof defining the outlet at its downstream-side end, with the transforming part gradually changing in the cross sectional shape from a circle to a flat shape in the lower course of the passage, and the thinning part having a flat cross sectional shape and gradually decreasing in thickness in the lower course of the passage.

Abstract: An extrusion die includes a pair of die body portions that together define flow passages and toggle clamps that clamp the die body portions together.

Abstract: The invention relates to a device for producing plastic articles by forming them in an inert atmosphere, the device comprising a hopper, a feed screw and means for forming the polymer melt. The device for injecting inert gas comprises a gas feed pipe, a gas injection surface near the wall of the hopper and a homogenization chamber fitted between the wall of the hopper and the gas feed pipe. That end of the gas feed pipe which is directed towards the injection surface is closed and has at least one radial opening o allowing the gas to be ejected at right angles to its direction of flow in the pipe.

Abstract: Disclosed is a method for producing patterned compound food products that realizes production, by simple control, of food products having a surface color pattern, enclosing a food material of a taste different from that of the food material forming the outer section, and having excellent appearance without seams on the surface. The method includes: (A) pouring predetermined amounts of at least two kinds of fluid food materials of different colors for forming the outer section into a cavity of a mold to obtain a preshaped product in a substantially fluid state held in the cavity shape; (B) inserting a nozzle into the preshaped product; (C) injecting a predetermined amount of fluid filling material for forming the inner section through the nozzle into the preshaped product; (D) drawing the nozzle out of the preshaped product; and (E) solidifying, after (D), at least the fluid food materials in the cavity.

Abstract: A valve for controlling the flow of a high pressure fluid is provided. The valve provides a reliable way of controlling the flow of high pressure fluids in applications requiring multiple cycles where equipment may be exposed to environmentally harsh conditions, such as high temperatures and pressures.

Abstract: A process for the production of a shaped article of a consumable product in which a composition is extruded through a die comprising at least one orifice characterised in that the cross-sectional area for flow through the said at least one orifice is varied in a continuous fashion during at least part of the time said extrusion is occurring, whereby an extrudate is obtained whose cross-sectional area varies along at least a part of its length. Apparatus suitable for carrying out the process are also described.

Abstract: Extrudable materials are provided in a pre-packaged disposable container. The container includes a first end having a dispensing aperture and a second end containing a shuttle that may be advanced within the container to dispense or extrude the contents. The shuttle is advanced towards the dispensing aperture in incremental amounts corresponding to the desired amount of contents to be extruded. Advancement of the shuttle may be accomplished using an extruding device integral with the container or from a separate extruding device. The container and shuttle are configured such that when the shuttle is advanced to a position proximate to the first end, the shuttle is locked so as to prevent rearward retraction of the shuttle back to the second end of the container. When the desired quantity of food has been prepared, the user recycles or disposes of the container, eliminating or greatly reducing the necessary amount of required cleanup.

Abstract: The present invention is directed to solid products produced by extrusion of recycled plastic materials from urban sweeping materials, comprising a first component containing plastic polyethylene and polypropylene materials in a proportion that ranges between 25% and 30% of the final weight of the product; a second component of plastic PET type materials ranging between 30% and 40% of the total weight of the product; and a third component selected from: PVC, styrene, polyamides, polycarbonates, polystyrene, ABS, aluminum and cardboard.

Abstract: An aromatic polycarbonate extruder which is a twin screw extruder for kneading components into a molten aromatic polycarbonate, the extruder comprising at least one module consisting of a kneading unit, a material seal unit, a back kneading unit and a full-flight unit which are arranged from an upstream side to a downstream side and a method of kneading components into an aromatic polycarbonate by using the above extruder. The present invention can provide a kneading apparatus and method for producing an aromatic polycarbonate which has an extremely small content of foreign matter and is free from residence deterioration such as coloration, cross-linking or gelation when the aromatic polycarbonate is to be kneaded with various components.

Abstract: Systems and apparatus combinations for producing a coating powder are provided wherein a stream of a powder coating precursor including at least one resin and at least one additional powder coating ingredient is contacted with a process fluid effective to reduce the viscosity of the powder coating precursor to allow processing of the powder coating precursor at a lower temperature.

Abstract: An extrusion/coating die. The die has an internal cavity and one or more static mixers in the die cavity. The static mixer fills the die cavity at its respective cross section. The die may also have one or more auxiliary inlets for separately admitting material/energy to the die.

Abstract: A die having first inlet and at least one auxiliary inlet for admitting materials to the die. Different materials may be admitted to the die at different positions, due to the placements of the inlets. The inlets may also be used to admit energy to cure/crosslink/disperse/blend materials contained in the die. By staggering the inlets and static mixers, different materials may have different residence times and different degrees of mixing, crosslinking and/or curing prior to being extruded from the die. A static mixer may be disposed in the die.

Abstract: This invention relates to a method and apparatus for forming soft capsules and provides novel processing flexibility. The apparatus includes extrusion dies as an alternative to spreader boxes and the use of melt-on-demand technology to enhance the long term stability of the film-forming materials. Preferred embodiments provide a positive displacement pump to transport the molten film-forming material from the melt-on-demand device to the extrusion device and preferably a reservoir means disposed between said extrusion device and said means to melt said film-forming material. The encapsulation apparatus may also include a valved injection wedge.

Abstract: This specification discloses a method and apparatus for forming and extruding ceramic materials. The apparatus utilizes a vacuum chamber mounted within a heating chamber or element; and the ceramic forming chamber is mounted within the vacuum chamber. A press is slidably mounted within vacuum and forming chambers in order to apply pressure to the ceramic materials during the heating step and subsequently during the ceramics extrusion step. The heating chamber applies heat to the vacuum chamber and forming chamber during the sintering and extrusion step. The forming chamber preferably remains in position within the vacuum chamber during the entire ceramic article manufacturing process.

Abstract: Apparatus and a method for extruding a honeycomb, providing correction in bowing of the extruded honeycomb structure, employs a deflector device having a base plate including an aperture aligned in a direction parallel to the extrusion axis through which the plastic material is conveyed to the die, the aperture having a varying diameter; and, a slide plate movably mounted to the base plate, the deflector device positioned upstream of the extrusion die, the degree of bow reduction depending on the diameter or width of the aperture imparting a pressure drop gradient on the flow stream entering the die.

Abstract: The invention relates to an adapter for an extruder for producing plastic profiles which is provided for the purpose of being disposed between an extrusion cylinder and an extrusion die, with the basic body of the adapter comprising a flow channel which is delimited at one outer side by a wall surface of the basic body and at one inner side by a deflection body which is rigidly connected with the basic body. A careful homogenization of the melt can be achieved in such a way that the deflection body is provided with a substantially spherical arrangement and is exclusively held by a holding pin which is situated downstream and is connected via bridges with the adapter.

Abstract: In order to achieve an economical and trouble-free continuous extrusion of plastic hollow profiles having at least one hollow chamber that is filled with foam, the profile tool of an extrusion device is configured in the shape of a pistol. The profile tool comprises a pistol shaft (102) with a melt feed channel (166), which is connected to the melt discharge opening of the extruder (300) and which opens into a melt radial distributor channel (164) that surrounds the lance guide channel (150). The profile tool is also equipped with a pistol barrel (101) comprising a melt ring channel (162), which extends from the melt radial distributor channel (164) to the profile nozzle (160) and comprising a lance guide channel (150), which extends in a continuous manner from a lance inlet (152) to the profile nozzle (160).

Abstract: An apparatus for dewatering a slurry of elastomeric polymer and water, using an extruder or extruders provided with a device for measuring an actual water content of the elastomer at a position within the extruder or extruders, and a control system for controlling the moisture content of elastomeric polymer exiting the extruder or extruders through an exit die based, at least in part, on the measured water content.

Abstract: A toner extruder for the preparation of a toner resin extrudate from a resin is provided. The extruder includes a housing defining a housing aperture and a resin inlet opening in the housing. The extruder also includes a conveyor for conveying the resin through the housing aperture. A lead-in gap at the resin inlet opening collects prematurely melted base resin and holds it for take-up by the conveyor, thus preventing fusing of the resin on the conveyor and avoiding clumping. The extruder can further include a member adjacent the resin inlet opening for inhibiting the heat transfer from the housing and/or the conveyor to the resin at the opening. The flow of resin adjacent the opening is thus improved.

Abstract: A resin extrusion apparatus having a weighing device (11) connected to a controller (18). A powder container (12) for supplying a powder (Y) to a resin extruder (20), a screw (13), and a motor (14) are installed over the weighing device 11. The motor (14) rotates a powder feeder (10) in proportion to a frequency of an inverter (17) connected to the controller (18). The powder feeder (10) is installed on the resin extruder (20). The powder feeder (10) supplies the powder (Y) to the resin extruder (20) quantitatively by a feedback control that is executed at regular intervals. The resin extruder (20) heats and kneads the powder (Y) and a resin (X) supplied thereto from a hopper (21) to form a resin pellet P containing the powder (Y) and the resin (X) mixed uniformly with each other.

Abstract: A method and apparatus for recycling plastic waste to produce a wood substitute material for use in manufacture of garden products. A mixture of one or more types of plastic materials is extruded in a partially plasticised condition so as to allow gases formed by the extrusion process to escape from the surface of the extrusion to create a simulated wood. Holes (9) formed in the surface of the extruded plastic material by escaping gases are elongated by passage of the extrusion through a finishing die (7) downstream of the extruder (5) to form a rough textured surface similar to sawn wood and the plastic material is set to retain the shape and configuration of the textured surface by cooling in a water bath (8) downstream of the finishing die (7).

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

Abstract: A spiral conveyor for a concrete extrusion machine has a first spiral conveyor section with a first external diameter. There is a second spiral conveyor section having a second external diameter which is greater than the first diameter. The second section is spaced apart from the second section. A third spiral conveyor section is between the first section and the second section. The first end of the third section is connected to the first section and the second end is adjacent to the second section. The second spiral conveyor section may be mounted on a hollow shaft of the third section. The second section has two longitudinally divided components, each having a recess therein. Connectors interconnect the two components and a locking device is between the hollow shaft and the second section.

Abstract: The invention relates to an extrusion die assembly having a balanced flow path in which the die and tip modules cooperate to form an extended exit channel which communicates with an extrusion channel. The die is rotatably mounted on the die holder and the tip module is rotatably mounted within the axial bore. Each of the rotatably mounted components is independently driven by a motor. The motors are controlled to provide an infinite variation in relative rotational motion between the rotating components.

Abstract: An apparatus for pelletizing a feed material containing finely divided solids and water by compressing the feed material in the die cavities of a pellet mill and permitting excess water to escape from the material being compressed through at least one water escape opening in each die cavity.

Abstract: The invention provides systems, methods, and articles useful in the production of foams, and, in particular microcellular foams. The systems include a restriction element that reduces the backflow of polymer melt in an extruder while polymeric material is injected into a mold or ejected from a die. The restriction element is positioned upstream of a blowing agent injection port to maintain the solution of polymer and blowing agent in the extruder above a minimum pressure throughout an injection or ejection cycle, and preferably above the critical pressure required for the maintenance of a single-phase solution of polymer and blowing agent. The systems can be used in injection molding, blow molding, or in any other processing techniques that include injection or ejection cycles. In some embodiments, the systems utilize reciprocating screws for injection or ejection.

Abstract: A method for food extrusion comprising the steps of: a) releasably installing an extrusion container having generally elliptically shaped open cavity with a frustro-conical shaped bottom terminated by a circular outlet on a base plate of an extrusion assembly; b) placing a food product to fill the cavity of the extrusion container, the food product including at least one soft constituent such as soft ice cream and the like; c) activating an elliptically frustro-conical shaped piston via a manual arm by applying pressure on the piston to downwardly push the food product contained in the cavity of the extrusion container, the piston being coaxial to the cavity and adapted to slidably engage the same; d) extruding the food product by providing circular downward flowing of the same with variable speed through the cavity down to the outlet of the extrusion container while performing a blending of air into the food product and twisting of the same; and e) collecting the food product being extruded from the containe

Abstract: The present invention provides microcellular articles, as well as methods and apparatuses for producing polymeric foams, and, in particular microcellular material. The methods involve forming a gas blanket within a polymer processing die that prevents contact between the polymer melt and surfaces of the die during extrusion. In one set of embodiments, the gas blanket is provided by gas diffusing out of surfaces of the nucleated polymer material. In other embodiments, the gas blanket is formed by introducing a gas from an external source into the polymer flow channel within the die. The dies, according to the invention, are specially configured to generate and to support the gas blanket. The extruded foams are free of surface defects that, typically, arise from contact between the polymer melt and the die surfaces.

Abstract: The present invention relates to an apparatus for the extrusion of plastic profiles with an extruder having an extruder flange, an extrusion die with a die flange through which the extrusion die is detachably connectable with the extruder flange, a fastening element with the two halves which is arranged to embrace the extruder flange and the die flange, a tensioning element in order to press the two halves of the fastening element against the flanges. An improved function is achieved in such a way that the two halves of the fastening element are fastened swivelably on the extruder and that they are mechanically coupled in order to perform an oppositely directed swiveling movement.

Abstract: Efficient, improved output systems and methods for producing polymeric film are described. Such systems include a feed assembly for positively and substantially constantly feeding polymeric raw material to a grooved feed extruder. The system also includes suitable apparatus for forming the molten polymer output from the extruder into film. The raw material may consist of 100% pelletized polymer, 100% polymer fluff, or any combination of the two. If necessary, a blending apparatus is included to blend the pellets and fluff prior to feeding the raw material to the extruder.

Abstract: Disclosed is a process and apparatus for formation of optical quality plastic sheet in a continuous fashion, wherein the plastic sheet produced is capable of use in a variety of optical and electronic display applications.