Abstract: A spray device which is provided with a nozzle for spraying a lubricant is arranged in proximity to a bottom mold and/or a plunger, and the nozzle is operated and controlled by a control device to spray the lubricant on a mold surface of the bottom mold and/or the plunger.

Abstract: An apparatus for generating generally uniform compression forces over a film of a relatively low-viscosity liquid by passing the low-viscosity liquid through a porous plate, from an upstream face to a downstream face of the porous plate. The porous plate has a specified porosity and arrangement of the through holes or other pores that results in forming a uniform pressure through and uniform compression forces over a film of the low-viscosity liquid that is at or near the upstream face of the porous plate. The apparatus of this invention results in homogeneous deformation of a material, such as molten polymer, polymer solution, multiphase polymer systems, asphalts or foods.

Abstract: A powdery mold release agent spray device including a nozzle having spray ports on its tip end side wall, a nozzle having spray ports on its tip end surface and shut pins, all of which are assembled in through holes made on both metal molds. The spray ports of the former and latter nozzles are exposed to cavity inside at time of spraying work, the spray ports of the former and latter nozzles are located in the through holes and the cavity is isolated from the spray ports of the latter nozzle by the shut pin. By using this spray device, a powdery mold release agent can be sprayed onto inside surfaces of the metal molds without exception, economically and without worsening a work environment.

Abstract: A method for enhancing the uniformity of wall thickness of an article having a high aspect ratio horizontal cross section and produced from a parison in a blow molding process whereby a barrier layer is applied to a selected area of the outer surface of each parison prior to its introduction into the blow molding apparatus, the barrier layer being effective to prevent premature freezing of the blown parison upon contact with a wall of the blow molding apparatus. The barrier layer application apparatus includes a generally contoured pad coupled to a supply of the barrier material, the pad being situated to contact a selected portion of each parison prior to its introduction into the blow molding apparatus.

Abstract: An apparatus for carrying out a process for the manufacture of a moulded product by compression of a powder or granules in a die, wherein a powdered die lubricant is used, lubricant particles are electrically charged and the charged particles are fed to the die in advance of the moulding powder is provided. The apparatus includes a first feed for feeding a powdered lubricant to the die, a second feed for feeding powder to the die after the powdered lubricant, and means for maintaining the electrical potential of the die at a predetermined value different from that of the powdered lubricant.

Abstract: A lubricating device for clay or ceramic extruders in the form of a separable lubricating ring inserted between the exit end of the extruder casing or barrel and the entrance end of the die. The lubricating ring includes an annular outer member having a substantially cylindrical inner wall. A frustoconical liner is affixed to the inner wall in such a manner as to form a reservoir therebetween and deliver a variably controlled supply of lubricant to the clay column at the entrance to the forming die. The frustoconical shape of the liner provides a negative angle of impingement between the clay and the lubricating ring resulting in longer life of the liner and an improved penetration of lubricant into the clay or ceramic material.

Abstract: The invention is directed to a process and apparatus for dotting molding tools with droplets of liquid or suspended lubricant in the production of shaped articles in the pharmaceutical, food, or catalyst fields. Pressurized lubricant solutions or suspensions and pressurized gas are alternately passed through capillaries, in conjunction with alternating single-substance nozzles, in such a way that drops are formed on the nozzle surface, in between the jets of gas, and are then detached from this surface and directed to specific zones of pressing tools. The apparatus comprises fast-acting valves for the brief release of pressurized gases and lubricant liquids or suspensions. The delivery lines of a gas valve and a liquid valve combine upstream of a capillary, and single-substance nozzles are mounted at the end of the capillaries.

Abstract: The invention is directed to a process for dotting molding tools with droplets of liquid or suspended lubricant in the production of shaped articles in the pharmaceutical, food, or catalyst fields. Pressurized lubricant solutions or suspensions and pressurized gas are alternately passed through capillaries, in conjunction with alternating single-substance nozzles, in such a way that drops are formed on the nozzle surface, in between the jets of gas, and are then detached form this surface and directed to specific zones of pressing tools. The apparatus comprises fast-acting valves for the brief release of pressurized gases and lubricant liquids or suspensions. The delivery lines of a gas valve and a liquid valve combine upstream of a capillary, and single-substance nozzles are mounted at the end of the capillaries.

Abstract: A multipiece spray assembly is disclosed which provides an annular axially and radially inwardly inclined nozzle passage operative to rapidly and efficiently apply a substantially complete and uniform coating to the inner surfaces of a forming cavity. Additional nozzle means may also be provided to simultaneously coat an overlying forming tool.

Abstract: A die casting machine comprises a die cavity, a sleeve communicating with the die cavity, and a piston which reciprocates within the sleeve to inject molten metal through the sleeve into the die cavity. The piston includes a stem portion having a passage which communicates with the interior of the sleeve. An air supply system is adapted to communicate with a source of pressurized air and with the stem portion passage to selectively deliver a stream of pressurized air into the sleeve through the stem portion passage. A lubricant supply system is adapted to communicate with a source of lubricant and is operatively connected with the air supply system for introducing lubricant into the air stream for delivery by the air stream into the sleeve. A cleaning fluid supply system is provided to selectively flush cleaning fluid through the lubricant and air supply systems and the stem portion passage.

Abstract: A method and apparatus for the coating of molding tools which comprises dispersing liquid or suspended lubricant in directional manner before each pressing operation in discrete, specific droplets onto the pressing zones of the molding tools, said dispersing being effected by means of f.i. piezoelectric transducers.

Abstract: A new spray ring apparatus for use in metal forming and glassware forming machines of the type having a forming cavity into which a fluid lubricant material is sprayed, said spray ring including a plurality of nozzles through which the fluid lubricant material is sprayed into the cavity in a tangential helical flow pattern to thereby uniformly coat the interior surfaces of the cavity prior to the forming of the metal or glassware parts therein.

Abstract: In a method for producing a plastic foam of a desired expanded dimension which is constituted by extruding a melt of a thermoplastic synthetic resin containing a blowing agent through a die of an extruder and passing the extrudate through a shaping device located outwardly of the extruder and secured to the discharge end of the extruder while expanding and solidifying the molten mass so that it fills the shaping device; the improvement wherein at least a part of that area of the inside surface of the shaping device with which the expanded resin makes contact is formed of a plate of a fluorocarbon resin, said plate being secured to the inside surface of the shaping device by fitting portions, said fitting portions having a sufficient space for absorbing an increase in the volume of the fluorocarbon resin plate at the temperature of extrusion molding; and an apparatus for use in the above described process.

Abstract: A device for lubricating the tie rods in the die closing unit of an injection molding machine, consisting of a tubular shell which forms an annular chamber around the tie rod and a lubricant absorbing fleece body occupying said chamber, the shell being constituted by two identical half shells which are joined along longitudinal edges provided with matching flexible tongue-and-groove formations, for the forcible radial snap assembly between shell-straddling wall portions of the guided part of the die closing unit.

Abstract: A press for compacting powders in which a first plunger is moved into a stationary die to meter and charge powder to be compacted into the die from one end of the die, the first plunger and a second plunger are advanced to compact the powder within the die and the first plunger is then used to push the compacted powder from the other end of the die.The press may be used to make pellets of ceramic nuclear fuel material.

Abstract: A self-lubricating tablet press having a force detector for measuring the force required to eject the tablet from the die cavity connected to and activating a lubricator for lubricating the dies and punch faces when the ejection force reaches a predetermined value.

Abstract: An apparatus for lubricating the internal wall of moulds for blanks comprises a corona charger for charging electrically the lubricant which is then injected into the mould. This latter is maintained at an electric potential such as to attract the lubricant and cause it to be deposited on the inside walls of the mould.

Abstract: A high pressure apparatus for synthesizing diamonds which comprises a pair of opposed tapered pistons each having a truncated end surface, a pair of hollow truncated-conical piston protectors each of which is made of a ductile metal and arranged on the tapered piston surface, and annular die member having a substantially cylindrical wall of a diameter larger than that of each piston truncated end surface, a hollow cylindrical body made of less compressibility coefficient material than the die material and having an outer diameter substantially same or slightly smaller than the diameter of said truncated end surface of each pistons and positioned coaxially within the die cylindrical wall, and gaskets placed respectively at the ends of said cylindrical body.