Abstract: The present invention relates to a temperature adjusting device, particularly designed for processing cylinders of extruding, injecting, drawing and the like machines for processing plastics materials in general, which comprises a flexible body, of sleeve shape, which may be arranged on the outside of the plastics material processing machine: the body is housed in an outer duct, for conveying and discharging air in a substantially transversal direction with respect to the body itself.

Abstract: An ultra-high pressure solid pressing machine of the type having a pair of upper and lower platens mounted in a press frame and movable relatively toward and away from each other, a mold unit interposed between the upper and lower platens and including at least a cylindrical cavity for receiving raw material therein, upper and lower conical surfaces formed around the upper and lower ends of the cylindrical cavity, and upper and lower anvils fitted respectively in the upper and lower conical surfaces through a gasket to compress the raw material in the cylindrical cavity under an ultra-high pressure, characterized in that the pressing machine includes a plurality of mold units stacked one on another between the upper and lower platens through insulators with axes of cylindrical cavities of the respective mold units being in vertical alignment with each other and a current supply control separately connected to the mold units.

Abstract: A electric runner distributor heater for use in passageway of a mold into which a flow stream of fluid plastic material is introduced and which in turn communicates with a plurality of sprue orifices. The heater includes a metal casing having an exposed surface over which the fluid material is directed at an elevated temperature, a plurality of unsheathed electrical heating elements disposed in respective zones of the casing corresponding to the location of selected of the sprue orifices, heat transmitting material compacted in the bore of the casing and surrounding each heating element for electrically insulating the heating element from the casing and filling all air voids between the casing and heating element to effect direct heat transfer to the casing from the heating element, leads coupling the heating elements to a power source, and a control for independently controlling the temperature of the heating elements and thus the temperature of respective zones of the casing.

Abstract: An extrusion die for externally ribbed seamless plastic tubing, including an extrusion head with an elongate nozzle within which a hollow mandrel is placed. The nozzle and mandrel define an annular extrusion orifice forming a parison of the tubing and having a coaxial conical portion with its generatrix forming an angle of substantially more than 45" with the longitudinal axis of the head, the diameter of the mandrel at its delivery end being not less than that of the nozzle. The die can be supplied also with an electrical heater incorporated inside the mandrel after said orifice, with a centering means mounting said nozzle uniformly spaced around the mandrel, with a threaded member for adjusting longitudinally said mandrel to vary the size of the extrusion orifice, and with a coupling means interconnecting said mandrel and the head and allowing only the axial, without rotation, movement of the mandrel.

Abstract: An electrically operated heating element for a hot-runner tool has a heat conductor and is positioned in a hot runner and in runners that derive from the heat conductor and lead to a series of outflow channels 8 from the hot-runner tool. The heat conductor is a flat body with tongues on the side toward the outflow apertures, each tongue extending to the vicinity of one outflow aperture.

Abstract: An electrically operated heating element for a hot-runner tool has a heat conductor and is positioned in a hot runner and in runners that derive from the heat conductor and lead to a series of outflow channels 8 from the hot-runner tool. The heat conductor is a flat body with tongues on the side toward the outflow apertures, each tongue extending to the vicinity of one outflow aperture.

Abstract: The invention relates to microcircuit cards, used for electronic transactions or other purposes, and concerns a process for mass producing electronic modules to be used in these cards and the modules obtained according to this process. According to the invention, there are fabricated, on the one hand, a metal grid with a plurality of openings into which there penetrate tongues attached to the frame of this grid and intended to form the modules' contact areas, and, on the other hand, pellets of plastics material which have a generally flat front face, a rear face in which there is a hollow and, between this hollow and the front face, windows so arranged that they can be positioned opposite the grid tongues.

Abstract: A mold assembly for supporting a mold in a molding press, heating elements for controlling the temperature of the mold and an insulating arrangement, disposed between the heating elements and structure of the molding press, having an insulating cavity defined by mold support structure and having thermally reflective means disposed in said cavity remote from the heating elements to reflect heat back through the cavity. The cavity may have an insulating material therein.

Abstract: Apparatus for uniformly preheating sheet material between opposed, spaced, parallel, heated members movable relative to each other into heat-transferring engagement with the sheet material, characterized in that one of said members has a uniformly-flat, unyielding surface and the other a yieldable surface embodying a plurality of uniformly-distributed protrusions between which there are recesses.

Abstract: A broad and continuous sheet or film is uniformly heated in a highly precise manner and with a specific heat profile by using a plurality of radiation heating furnaces, wherein in the interior of each radiation heating furnace, a plurality of rows of heaters are arranged rectangularly to the direction of delivery of the sheet or film to be heated. A thermometer for measuring the temperature of the sheet or film is arranged in the vicinity of an outlet for the sheet or film outside each radiation heating furnace. Outputs of heaters arranged within the radiation heating furnaces located just before the respective thermometers are controlled based on the temperatures detected by the respective thermometers by using a computer.

Abstract: A method of manufacturing a memory card comprises taking an electronic module, which includes an insulating substrate and an integrated circuit, and locally raising the temperature of the plastic material of the card to its softening point. The module is then applied, with pressure, on one side of the card at its softened location to embed the module in the plastic material.

Abstract: An extrusion die plate for a plastic pelletizing machine having a removable central insert having the plurality of extrusion orifices incorporated therein with the main body of the die plate including an opening receiving the insert with the insert being capable of quick and easy removable for cleaning of plastic material and for replacement of the insert with other inserts having a different number of extrusion orifices or a different size of extrusion orifices. The insert is screw threadedly connected or otherwise quickly detachably connected in an opening in the main body of the die plate to reduce the down time for maintenance and for product changes.

Abstract: In a heating device for use in a vulcanizing apparatus in which a green tire is vulcanized by using a metal mold, three magnetic cores around each of which an electromagnetic coil is wound are arranged equidistantly on at least one surface of the metal mold, and a magnetic yoke is arranged on these magnetic cores. Then, three phase alternating currents are respectively supplied to the electromagnetic coils to generate uniform magnetic fluxes passing through portions of the metal mold between adjacent magnetic cores. Therefore, it is possible to obtain the heating device for use in the vulcanizing apparatus which can realize the uniform eddy current distribution i.e. the uniform temperature distribution in the metal mold by a simple construction.

Abstract: A tip-shaping device for crayons is disclosed. The device includes a cylindrical lower section housing a disposable paper cup for receiving melted wax and a conically-shaped top section holding a heat-conductive member with a tapered internal cavity and a drain opening at the bottom of the cavity for draining melted wax into the paper cup. The heat-conductive member is heated by a ceramic heater connected to a source of electrical power.

Abstract: An alternately heatable and coolable moulding block for manufacturing plate-shaped information carriers from thermoplastic material, which block is composed of a plate of an electrically insulating material which has a thin metal mould containing the information and in which plate a duct for a cooling liquid is provided and of an electrical conductor wound to form a flat induction coil. Between the mould and the insulating plate, there are provided a layer of a material of good thermal conductivity, which layer is in contact with the mould, and a layer of a ferromagnetic material.

Abstract: A method for vulcanizing rubber within a mold by dielectric heating. The mold is made of dielectric materials such as ceramics or plastics, and the rubber material is vulcanized within the mold in a dielectric heating furnace. The surface portions of the mold in contact with the rubber material are preferably made of a material having a high dielectric loss factor in order to heat the rubber material or to prevent cooling of the dielectrically heated rubber material by conduction of the heat toward the mold. The other portions of the mold are made of another material having a low dielectric loss factor. The mold is a separate mold. The separate mold is fixed in a frame made of a dielectric material having a low dielectric loss factor.

Abstract: A mold assembly for forming a dough mass into a unique pizza shell. The molding method and apparatus are operable to form the pizza shell from a preestablished, pre-measured quantity of dough sufficient to fill the mold cavity completely, but to obviate extrusion of excess dough from the mold. Thus, material is conserved and wasteful trimming operations are eliminated. The selected mass of dough used is correlated with the specific volume of the mold cavity to ensure complete filling while avoiding "overrun". Controlled spacing is provided between the cooperating dough-shaping mold elements so that air may escape from the mold cavity during compressive closure of the mold while the dough is retained to prevent extrusion. The shell itself is characterized in that it is not merely a flat sheet, but consists essentially of a planar base sheet bounded by a circumambient, integrally-formed, upstanding rim, marginal dam, or edge.

Abstract: A flow molding process and associated molding apparatus for making plastic parts or pieces utilizing a radio frequency heating fluid. The molding apparatus includes a pair of spaced electrodes, at least one of which supports a molding material which may be in the form of an imprinted diaphragm (mold) for forming an imprint on at least one side of the plastic piece being fabricated. The apparatus is, in particular, employed for forming pieces having different thicknesses throughout, the purpose being to provide uniform heating throughout the piece being fabricated regardless of the varying thicknesses thereof. This is accomplished by maintaining the capacitance constant throughout all different thickness sections of the piece. This may be accomplished by equalizing the dielectric constants between the thermoplastic or the like material and the diaphragm (mold) material.

Abstract: A frozen-food server comprises a scoop-shaped head of a massive light metal, e.g. aluminum, provided with a cavity in which is lodged a unit formed with an electric heater, the thermostat and electrical controls for the heater, this cavity being formed on a stem of the head which is received in a tubular handle formed by a sleeve through which an electrical conductor passes. According to the invention, a rigid insulating tubular body is interposed between this stem and the sleeve, receives the electrical connection between the heater circuit and the conductor, and also accommodates a thermally shrunk tube which seals the junction.

Abstract: Molding of expanded plastic material such as dielectric material by microwave radiation is effected in a mold in which the part of the mold which contacts the material to be molded is of a material having high dielectric losses and capable of absorbing microwave radiation. Such mold portion preferably comprises a resin containing a small amount of carbon black.

Abstract: Molding apparatus for laminated foam-body panels, comprising first and second walls defining a molding cavity therebetween, the first wall including means for heating the foam during molding and the second wall comprising hingeably mounted access doors, adjustable holding and shaping means for said panels, disposed within the cavity and at least two of which are perpendicularly adjacent, means for simultaneously positioning each of the holding and shaping means, first and second movable locking means for the holding and extrusion means and for the access doors respectively, the first locking means being automatically actuated in response to the positioning means, means for simultaneously actuating and disengaging the first and second locking means, and means for filling the cavity with unmolded foam material.

Abstract: A device for the production of a non-woven product from a fluid dielectric substance, comprising a first electrode, means for leading this electrode along a closed path, driving means to move this electrode along this path, coating means for coating this electrode with the said substance opposite a first portion of the said path, a second electrode whose surface is relatively extensive with regard to the first electrode, located opposite a second portion of the said path, an electrostatic generator connected to one of the said electrodes to establish a potential difference between them so as to create an electrostatic field capable of acting on the said substance to form a plurality of fibers in the direction of the said second electrode, characterized in that it comprises two endless transport bands mounted respectively around guide means defining two closed parallel trajectories passing near the coating means and the said second electrode, these bands being connected to the said driving means so as to move

Abstract: Apparatus for molding crayons and the like having particular utility in reclamation of broken and worn crayons and molding thereof into new crayons. Means for supplying radiant and convective heat are surrounded by a housing, with a plurality of chutes positioned beneath the heat supply means, each chute having an orifice communicating with a mold cavity into which molten wax flows by gravity. The apparatus has no moving parts and is simple and safe for use by children.

Abstract: Apparatus and method for the continuous manufacture of structural shapes are disclosed. Mineral fiber material in the form of continuous strands, webs, or mats, impregnated with a heat-hardenable resin, is passed through a dielectric heater. The material is shaped as it passes through metallic dies that are disposed within the dielectric heater. The electric field between the electrodes of the heater is reduced or shunted at the location of the dies. The heater is arranged so that the maximum electrical field occurs adjacent the entrance to the heater.

Abstract: A system and method is provided for forming semiconductor tear-drop shaped bodies having minimal grain boundaries. Semiconductor material is melted in a capillary tube at the top of a tower, and forced under gas pressure through a nozzle. Separate semiconductor bodies are formed. They are passed through a free fall path over which a predetermined temperature gradient controls solidification of the bodies. The resultant bodies are tear-drop semiconductor bodies of near uniform size with minimal grain boundaries.