Abstract: Disclosed herein is a system for momentarily heating the surface of a mold and system thereof. The system comprises a casting material feeder, upper and lower molds, a water-cooled system, first and second cores, a voltage generator, a electric resistance heater, a controller, an injection molding control, an air and gaseous fuel mixture and supply unit, an interface and a control panel. The casting material feeder serves to supply molten casting material. The injection molding control serves to control the upper mold and the lower mold. The air and gaseous fuel mixture and supply unit serves to supply compressed air and gaseous fuel simultaneously. The gaseous fuel mixture and supply control serves to control the operation of the air and gaseous fuel mixture and supply unit. The interface serves to interface the injection molding control and the gaseous fuel mixture and supply control. The control panel serves to visually display the control, condition and operation of the components of the system.

Abstract: The invention relates to a method for producing fibrous materials from thermoplastic material, wherein thermoplastic material is molten and fed into a rotating reactor to form a molten film and the fibers are formed on and stretched out along an open edge of the reactor. The fibers are formed on the reactor edge without using nozzles or ducts that are susceptible to clogging so that the rotating reactor is heated in such a way that the molten film has a temperature close to decomposition temperature of the thermic plastic material and the reactor is rotated on the edge at an orbital speed of no less than 10 m/s.

Abstract: The present invention relates to an apparatus and method for forming meltblown material with a die assembly. The die may further include a die tip and a heating element positioned relative to the die tip apex to maintain the polymer material extruded from the die tip in a molten state.

Abstract: A method and apparatus for conferring a cup shape to the terminal junction segment of pipes that are bi-axially oriented longitudinally and circumferentially and hence very sensitive to diameter and length reduction through heat. The apparatus includes a furnace which heats the segment to a differentiated temperature, increasing towards the end of the segment such that the inner diameter of the terminal segment progressively drops down to a controlled value as temperature increases (whilst length of the pipe is simultaneously reduced, with a corresponding increase in thickness of the wall of the terminal segment). Preferably then, in an appropriate station, an additional heating is executed to a plastic deformation temperature suited to obtain a correct preliminary dilation of the terminal segment, upon introducing a rigid element which acts as inner contrast, thereby inhibiting any retraction thereof.

Abstract: A method for continuously producing expanded thermoformable materials comprising the steps of: conveying a thermoformable assembly by means of a conveyor through a plurality of heating zones, whereby the thermoformable assembly is heated to a temperature at which the thermoformable material adhesively bonds to the first and second mold plates; disposing the thermoformable assembly between an upper press plate and a lower press plate, and heating the thermoformable material to a temperature in the range between about 50° to 300°C. while moving the upper and lower press plates so as to effect an expansion of the cross-section of the thermoformable material; and conveying the expanded thermoformable material through a cooling zone, wherein the expanded thermoformable material is cooled to a temperature sufficient for maintaining its structural integrity.

Abstract: A method and apparatus for making insignias with a raised design is capable of providing more aesthetic appearance to the insignias thus made. A base material consisting of a base sheet and a surface sheet overlaying the base sheet is prepared for making into an insignia. The base material is coating with a surface coating of decorative material. A bottom mold and an upper mold are used to press the base material to form raised design of patterns. The bottom and upper molds are coupled to a composite heating device including high-frequency induction and electric heating means for applying both high-frequency induction heat and electric heat to the base material while the upper molding is being pressed against the bottom mold. The upper mold is formed with a plurality of edge-defining blades for cutting an edge for the insignia, a plurality of pattern-defining blades for forming a pre-designed pattern on the insignia.

Abstract: An electrically operated apparatus and method for altering the flow resistance experienced by a thermoplastic passing through a flow channel using one or more thermal valves having a short response time is described. The extrudate configuration of thermoplastic emerging from one or more extrusion orifices is alterable by selectively opening one or more of thermal valves that supply thermoplastic to the one or more extrusion orifices. Each thermal valve is cooled by a heat sink and has an associated heater responsive to control signals. Each heater is independently activated in synchronization with movement of the apparatus in a predetermined spatial pattern with respect to a base. By extruding thermoplastic onto a base layer-by-layer in this manner, a three-dimensional object may be formed.

Abstract: An apparatus for conferring a cup shape to the terminal junction segment of pipes that are bi-axially oriented longitudinally and circumferentially and hence very sensitive to diameter and length reduction through heat. The apparatus includes a furnace which heats the segment to a differentiated temperature, increasing towards the end of the segment such that the inner diameter of the terminal segment progressively drops down to a controlled value as temperature increases (whilst length is simultaneously reduced, with a corresponding increase in thickness of the wall of the terminal segment). Preferably then, in an appropriate station, an additional heating is executed to a plastic deformation temperature suited to obtain a correct preliminary dilation of the terminal segment upon introducing a rigid element which acts as inner contrast, thereby inhibiting any retraction thereof.

Abstract: A method and apparatus forming a micro-relief pattern on a surface of an optical disc, which micro-relief pattern may form a holographic image in which a shim bearing a micro-relief pattern is pressed onto the surface of the disc and the apparatus used ensures that a greater force is applied to the periphery of the disc and the remainder of the surface on which it is desired to form the micro-relief pattern, such method and apparatus enables a satisfactory relief pattern to be formed over a substantial area of the surface of the disc.

Abstract: A unique composite material impregnated with a heat curable resin comprising a layer of conductive fibers and one or more resin carrying layers is utilized to reinforce utility poles by wrapping the material around a portion of the utility pole and causing a current to flow through the conductive fibers to resistively heat the material to the resin. The composite material can also be incorporated into molds to produce cured composite parts. The composite material is also used in the construction of large parts without the need for huge, expensive molds. The conductive fibers in composite parts are oriented in a manner to ensure that the entire part is thoroughly heated during the curing process.

Abstract: A process for producing a concrete product, which includes a step of preparing a primary concrete by mixing a super dry consistency concrete having a unit amount of water of at most 100 kg/cm.sup.3, a step of preparing a secondary concrete by weighing a suitable amount of the primary concrete and adding at least water, a water reducing agent and a setting accelerator thereto, followed by remixing, and a step of molding the secondary concrete in a formwork.

Abstract: A method for curing a lens-forming fluid, including exposing the lens-forming fluid to an ultra-violet light, wherein the exposure time is between twenty seconds and thirty minutes, which can completely cure the fluid. The exposure can occur by placing the lens-forming fluid intermediate a plurality of ultraviolet light sources, in which the intensity of the ultra-violet light is at least 1.2.times.10.sup.-2 watts per square centimeter at a wavelength of 350 nanometers. The lens-forming fluid preferably is a monomer. The prior art, in contrast, requires significantly longer exposure times to cure monomer or other lens-forming fluids.

Abstract: An automated method for controlling the amount of charge introduced in a mold having a mold cavity and associated overflow assembly by adjusting the amount of charge introduced into the mold cavity in subsequent moldings using a measurement of the amount of excess charge material received by the overflow assembly. The charge is formed so that the fibers therein are randomly oriented in substantially parallel horizontal planes such that they are always substantially parallel to the direction of initial flow into the cavity of the molding unit. Excess charge from the cavity is forced into the charge overflow unit, which is selectively located in an area where surface finish is less critical. The excess charge displaces an overflow pin, which is kept upwardly biased, under molding pressure, to be flush with the lower inside wall of the molding unit cavity. The pin displacement is measured by a sensing transducer.

Abstract: An apparatus and method for forming a lens using a structure having a front mold, a rear mold, and a gasket having opposed ends and defining an axially extending bore in which the front and rear molds are disposed within the bore and spaced apart from each other therein, comprising a piston for axially moving within the bore of the gasket a selected one of the front mold or the rear mold relative to the other mold to a desired one of a plurality of axial separation distances between the molds. A needle also preferably also communicates with the bore of the gasket between the molds to provide fluid communication between the outer surface of the gasket and the bore to facilitate axial movement of the molds relative to each other. Another needle is used for injecting a desired amount of a lens-forming fluid into the bore of the gasket intermediate the front and rear molds, in which the fluid is cured to form the lens.

Abstract: Liquisolid systems are acceptably flowing and compressible powdered forms of liquid medications. According to the concept of liquisolid systems, liduid lipophilic drugs, or water-insoluble solid drugs dissolved in suitable non-volatile solvents, may be converted into free-flowing and readily compressible powders by a simple admixture with selected powder excipients referred to as the carrier and coating materials. Various grades of microcrystalline or amorphous cellulose may be used as carriers, whereas very fine particle size silica powders may be used as coating materials.

Abstract: An insert is held in a cavity within a die set by a movable hold member. Molten resin is injected into the cavity when the insert is held by the hold member. The hold member is separated from the insert at a given timing. A surface of the hold member is heated to a temperature higher than a temperature of an inner surface of the die set. The hold-member surface contacts the molten resin. The die-set inner surface is exposed in the cavity.

Abstract: The invention relates a control or regulation of a multipiston squeeze head or block squeeze head of a molding machine for clay-bonded molding sand (molding material). In an active pressing process with a squeeze head moving in downward direction, e. g. consisting of multislides or multipistons, the displacement of individual multislides has so far been detected through by end switches (approach switches) or through inductive stroke transducer. Thus, reached positions are registered and processed in a control means. Subject matter of the invention is an adaptation of influenceable parameters to obtain a sand mold of good quality on a long-term basis. Surprisingly, the measurement of the flown oil (Q;q.sub.t (t)) provides a basis for the improvement of the sand mold. If models of different sizes are molded subsequently, the quantity of sand required is different. According to the control signal of the invention (Q;q.sub.t (t)), more or less sand is filled into the bunker.

Abstract: A process for making a foamed shoe sole includes (a)forming at least one unexpanded blank in at least one first mold by introducing thereinto a resinous molding composition, which includes an agent capable of expanding and cross-linking the resinous molding composition, at a temperature lower than that which can cause the composition to expand and cross-link; b) trimming the unexpanded blank to remove flash and inspecting the weight and size of the unexpanded blank; and (c) placing in a second mold the unexpanded blank having a predetermined weight and size and heating the unexpanded blank under pressure at a high temperature sufficient to cause the unexpanded blank to undergo expansion and cross-linking, whereby the sole so produced has good cross-linking characteristics and retains exactly the shape and size of the mold cavity of the second mold. Preferably, the resinous composition contains polyethylene vinyl acetate.

Abstract: A conductive wire is electrically heated in a gas atmosphere, wherein a gas reacts with a constituent material of the conductive wire, under gravity-free or micro gravity state. A ceramic is formed on a surface of the wire sa an outer core through a reaction between the wire and the gas and is left by caving an inside wire by melting while maintaining controlled gas convection.

Abstract: Using a metal mold (8) having an insulating section provided with vapor release sections, pressure outside the metal mold (8) is reduced, and heating is performed while releasing vapor produced thereby through the vapor release sections. This can prevent insulation breakdown caused by condensation of large amounts of vapor produced by materials during molding and heating of starch-based biodegradable molded objects by means of resistance heating, dielectric heating, etc.

Abstract: A method of manufacturing composite board whereby a continuous coat of mortar reinforced with glass cloth or a similar material is laid onto a continuous core. The still fluid mortar dribbles onto the core at a specific viscosity and is distributed over the core. The rate at which the mortar dribbles is regulated.

Abstract: An apparatus for feeding fluid-flow substances composed of at least two mutually reacting components, in particular casting resin, the components being fed from piston-cylinder units (7, 8) associated with supply vessels (1, 2) and from there being conveyed to a mixing system (36). The piston-cylinder units (7, 8) are fitted with retraction capability for the conveyor pistons (17, 19). A drive system is provided to load the conveyor pistons (17, 19) with a pressurized fluid. The piston-cylinder units (17, 19) evince a displacement volume of which the lower limit is determined by the viscosity of the component to be conveyed and the stroke frequency of the conveyor pistons (17, 19) in relation to the required rate of conveyance. The displacement volume of the piston-cylinder units (7, 8) may be between 0.1 and 4 ltr, preferably being 1 ltr.

Abstract: The present invention provides a method of control in thickness of the biaxially oriented film of a plastic material to be extruded via an extrusion port gap adjustable by adjustment of a plurality of die bolts provided on an automatic T-die. A position corresponding to the die bolt is set on the film biaxially oriented so that a thickness of the film at the above position is measured to find a deviation of the measured thickness from a reference thickness predetermined to thereby carry out a feed-back control of the adjustment of the die bolt in accordance with the deviation. It is important for the present invention that the feed-back control in the adjustment of the die bolt is carried out with reference to partial side-drawing rates different in a width direction of a sheet to be drawn prior to formation of the film, where the partial sidedrawing rates are determined for parts aligned in the width direction of the film.

Abstract: The invention relates to a method for painting an object during a creative shaping process, for example an injection-molding, extrusion-molding, or back-foaming method with a paint film, as well as a paint film for working the method. In the method, a paint film is placed in an open mold that internally has the original shape of the part. The mold is closed and filled with a starting material, with the starting material curing and/or bonding and/or reacting inside the mold to at least shape the object. To simplify the method, the paint in the paint layer of the paint film is partially cured and/or partially crosslinked before the starting material is added, without adhesive, and is cured only during and/or after the starting material is placed in the mold.

Abstract: In a process for recycling of gas-containing synthetic plastics material, this material at first is comminuted, molten, degased and filtered. The degased synthetic plastics material is supplied in the same plant before its solidification for gas introduction, and in order to homogenize the gas content, the gas amount introduced into the synthetic plastics material per time unit is controlled in dependence from the synthetic plastics material amount supplied per time unit to the gas introduction, and preferably the pressure of the synthetic plastics material to which gas is to be added, is kept almost constant. The apparatus suitable for performing this process comprises an extruder (12,13) for plasticizing and degasing the synthetic plastics material, the outlet (15) thereof is connected by means of at least one line (16) to a mixer (25), to which also a device (29) for supplying gas is connected.

Abstract: Balanced injection molding in a multi-cavity mold of a plurality of ridged-wall products having is accomplished by providing mold parts defining therebetween at least two cavities for forming the ridged-wall plastic products, wherein each of at least two cavities defines a plurality of flow channels in which injected plastic material flows within the cavity and in which flow channels the first side strips are formed; wherein the relative disposition of the mold parts is adjustable for adjusting the dimensions of the flow channels in at least two mold cavities separately so that when plastic material is injected approximately simultaneously into the at least two mold cavities the injected plastic material flows within the at least two cavities at respective flow rates that cause the at least two mold cavities to be completely filled approximately simultaneously with the injected plastic material.

Abstract: Controlling device and method for an extruder which can continuously process materials of different kinds without burning a following material and without causing variation in physical properties by allowing the following material to succeed to a preceding material without running out of sheet when the materials are replaced. In an extruder in which a roller die 2 having upper and lower parallel rollers 9 is arranged in front of an outlet of an extruder body 1 rotatably including screws 3 for extruding material and a bank portion 12 surrounded by the upper and lower rollers 9 and a side guide 20 closing both of right and left sides of the outlet 7 is formed, the roller die 2 is once stopped when the quantity of the bank portion 12 reaches the bank quantity which is the minimum for the preceding material to be extruded to be succeeded by the following different material to be extruded.

Abstract: One or several molten materials are extruded at low pressure from one or several continuous plasticizers through central stationary nozzles via individually circumferential flow passages of common distribution spools directly into individual extendable transfer reservoirs. From there, the molten materials are transferred in a continuous cascading manner into secondary transfer reservoirs to be subsequently transferred and condensed within mold cavities into finished molded articles. The central stationary nozzles and stationary primary displacement plugs are grooved with lateral longitudinal melt-flow channels to allow the conveyance of molten materials across intersecting molten material passage ways during the extending movement of the manifold assembly. The molten materials are conveyed through secondary displacement plugs into secondary transfer reservoirs by external cylinders, retracting the manifold assembly on adjustable-length spacer rods in unison against the stationary primary displacement plugs.

Abstract: This invention relates to the manufacture of flexible porous plastic aeration pipe having an essentially uniform porosity throughout its length. The plastic pipe of this invention has a gas permeable wall of thermoset polymer particles and thermoplastic binder for the particles with a substantially uniform plurality of micropores through the wall of about 0.001 inch to 0.004 inch along its length for diffusion of gas therethrough and transfer to a medium. The thermoset polymer particles have a mesh size of about 60 to about 140 mesh, preferably approximately 80 to 100 mesh. The method of manufacture includes volumetric delivery of thermoset polymer particles and thermoplastic binder particles to a mixing chamber for preblending and then controlled volumetric feeding of the preblend into an extruder to form the porous aeration pipe.

Abstract: A simulation system predicts a behavior of a molten resin in a mold in filling, packing, and cooling processes by using a fundamental equation formulated by the finite element method, and shrinkage factors in a direction of thickness and planar directions based on anisotropy of a volume shrinkage factor obtained during prediction of the filling, packing, and cooling processes, so that a warp deformation in an injection-molded article can be predicted at a higher precision. In this simulation system, the warp deformation is predicted by calculating the shrinkage factors in accordance with:.epsilon.Z=A+B.multidot.eV (1).epsilon.P=(eV-.epsilon.Z)/2 (2)wherein .epsilon.Z is a shrinkage factor in the direction of thickness, .epsilon.P is a shrinkage factor in the planar directions, eV is a volume shrinkage factor, and A and B are shrinkage coefficients.

Abstract: A control for dispensing foam into hollow body cavities includes an index hole positioned adjacent to a dispense hole to receive the foam. The index hole carries information that is read by a sensor associated with a foam spray gun, wherein the information is selected to correspond to the desired amount of foam for the particular body cavity. With the inventive foam spray gun and method, an operator merely inserts the dispense nozzle into a dispense hole, and the sensor reads the information from the index hole. The sensor signal then allows control of the amount of foam dispensed into the dispense hole. This eliminates problems that have been experienced in the past wherein operators were forced to remember the amount of "shots" of fixed volumes of foam for each hole. In the past, operators may sometimes have dispensed too little foam or too great an amount of foam for a particular hole. Further, in the past, operators may sometimes have dispensed foam into a hole that should not have received any foam.

Abstract: Liquisolid systems are acceptably flowing and compressible powdered forms of liquid medications. According to the concept of liquisolid systems, liquid lipophilic drugs, or water-insoluble solid drugs dissolved in suitable non-volatile solvents, may be converted into free-flowing and readily compressible powders by a simple admixture with selected powder excipients referred to as the carrier and coating materials. Various grades of microcrystalline or amorphous cellulose may be used as carriers, whereas very fine particle size silica powders may be used as coating materials. Based on the theory that the carrier and coating materials can retain only certain amounts of liquid and at the same time maintain acceptable flow and compression properties, a new formulation-mathematical model is provided to calculate the optimum quantities of carrier and coating materials required to yield acceptably flowing and compressible liquid/powder admixtures.

Abstract: The present invention is to improve a laminate molding method and a laminate-molding apparatus for manufacturing molded products that have an external appearance of excellent quality. For this purpose, according to a molding method, by which a mold clamping device (3) laminates sheet of skin material (Mm) and a core resin (200), the tension of the sheet of skin material Mm, which is inserted into a cavity (9) between a clamped fixed metal mold (11) and a clamped movable metal mold (12) and is laminated by the movable metal mold (12), is varied, continuously or in a stepped manner, in consonance with the insertion amount of the sheet of skin material (Mm).

Abstract: The present invention describes a new and innovative method of making the synthetic fiber containing the infrared energy powder. The present invention generally has three steps. The first step is mixing a quantity of the synthetic material with a quantity of the infrared energy powder to form a mixture of the synthetic material and the infrared energy powder. The second step is adding a quantity of silicon oil into the mixture of the synthetic material and the infrared energy powder to form a blend of ready to draw substance. The third step is drawing one or more strands of synthetic fiber containing the infrared energy powder from the blend of ready to draw substance. It is believed that the innovative use of the silicone oil holds together the infrared energy powder and the synthetic material better then other conventional methods. The silicone oil acts as an epoxy and also as a lubricant.

Abstract: An apparatus and method for controlling mass flow in an extrusion die provides cross-directional measurements of at least one property of an extrusion produced by the extrusion die, such measurements being made at a plurality of cross-directional locations that successively span the extrusion. The measurements are assembled to provide cross-directional profiles of the extrusion. A spatial-frequency splitter operates upon the cross directional profiles to separate selected spatial frequency component profiles from each cross-directional profile. A reference profile is provided for representing desired spatial frequency profiles. An error signal generator generates error signals representing the difference between the spatial frequency component profiles and the desired spatial frequency profiles and actuators control mass flow components of the extrusion die in response to the error signals.

Abstract: A method and apparatus for liquid thermoset resin or polymer molding using electromagnetic waves (particularly radiofrequency waves or microwaves), is described. The method and apparatus uses a metal mold (10, 212) with a cavity (401) for the molding as well as for confinement of the electromagnetic waves. Multiple low loss ports (A, B, C, D, E, p1, p2, p3) are provided for introducing the microwaves into the cavity.

Abstract: In a method for quality control during production of concrete blocks by bringing a concrete mortar into an upwardly open hollow mold with a solid peripheral wall for forming at least one molded blank placed on a flat supporting surface, a thickness of a molded blank is determined contact-free for testing the dimensional stability. The volume of the molded blank is determined from the determined thickness and the cross-section of the hollow mold. The density is obtained from the weight and volume, which is a criteria for strength and resistance testing of the molded blank. Finally, the appearance of the molded blank is determined by at least one video camera and compared with the appearance of faulty molded blank to determine the molded blanks with surface errors. All results of the height, density and surface measurements can be used for control of the production arrangement.

Abstract: The present invention provides a method for controlling a firing shrinkage of a ceramic green body. The method includes the steps of: subjecting a ceramic powder to a pretreatment by which a spherical diameter (Rs) of the ceramic powder is adjusted to be 1 .mu.m or less, wherein Rs is expressed by an equation of Rs(.mu.m)=6/.rho. S (.rho. is a true density (g/cm.sup.3) of the ceramic powder, and S is a BET specific surface area (m.sup.2 /s) of the ceramic powder.); subjecting the ceramic powder to heat treatment at a specific temperature calculated in advance; molding the ceramic powder to obtain a ceramic green body; and firing the ceramic green body. A temperature for the heat-treatment is calculated of the basis of a correlation between calculative rates for firing and arbitrary selected temperatures.

Abstract: It is an object of the invention to provide a casting method for forming a resin molding which is able to cast the resin molding according to an assembly line production system while completely eliminating variations in quality between products. In the casting method according to the present invention, a plurality of metal molds are circulated at a given time difference in the order of a step of casting a hardenable resin composition into a preheated metal mold, a step of heating and hardening the casted resin composition, and a step of releasing the hardened product from the metal mold and assembling the metal mold. There are provided a plurality of heating devices and, while one metal mold in the hardening step is being heated by one of the heating devices, the other metal mold is heated at the above given time difference by the other of the heating devices.

Abstract: A mold material introducing apparatus for introducing mold materials into a mold includes material supplying means for supplying a predetermined amount of mold material into the mold, moving means for moving the mold relative to the material supplying means and vice versa, and control means for outputting command signals to those means. The control means divides the inside of the mold into segments and assigns addresses to those segments, and controls the material supplying means and the moving means so that a predetermined amount of a predetermined mold material is located at each of the address locations. Accordingly, the mold materials of different kinds that are led into the mold are dispersed in a predetermined state.

Abstract: The method for controlling a blowmolding machine during a process of making an object is disclosed. The machine includes a die head, a mandrel and an extruder that rotates and drives a plastic material between the mandrel and the die head to form a plurality of elongated parisons. The method comprises setting the distance between the die head and the mandrel and the rotation speed of the extruder to accomplish predetermined target values of the weight of the object and parison velocity. Plastic material is fed to the machine and the extruder is operated to form the parisons. A parameter related to the viscosity or melt index of the plastic material in the extruder is detected and the material distribution function and the speed of the extruder are adjusted in response to the parameter so that object weight and velocity of the parisons made are maintained substantially at target values.

Abstract: An apparatus for making a three-dimensional article based upon article defining data may be used to make a mold for the article and molding the article from the mold. Alternately, the apparatus may be used to make articles having filled or solid portions. The apparatus preferably includes a base, a processor for defining a mold skin for producing a mold for the three-dimensional article, and a build material dispenser for dispensing build material responsive to the processor to construct the mold skin extending outwardly from the base and defining at least one cavity. Solidifiable fill material is introduced into the cavity to form solid mold portions. The solid mold portions may be separated from the mold skin, and injection molding, for example, used to mold the three-dimensional article. The base preferably includes a thin plastic layer which is penetrable to permit introduction of the solidifiable fill material into the cavity.

Abstract: A formwork constructed of prefabricated elements, preferably for building a concrete wall. The formwork has two parallel walls that define a space that is filled with concrete laden with water, sand and large aggregates. An inner wall of the formwork has a lattice or perforated structure to filter and pass water and small aggregates from the space that is filled with concrete. An outer wall also has a lattice or perforated structure to filter additional water and smaller aggregates from the space that is filled with concrete. This invention also includes a concrete heating wall that may be constructed from formwork.

Abstract: A method and apparatus are provided which can automatically and securely supply a molding machine with natural resin pellets and masterbatch pellets at a predetermined mixture ratio, and which is excellent in performance and costs. A natural resin feeder and a masterbatch feeder are connected to a chute of the molding machine via respective tubes. The amount of the natural resin pellets and the amount of the masterbatch pellets which are air-transferred through the respective tubes are controlled such that they are transferred in accordance with the predetermined mixture ratio. The chute and the raw material supply port of the molding machine is connected by a pipe whose cross-sectional area at the upper portion is substantially equal to or smaller than that at the lower portion thereof. The natural resin feeder and the masterbatch feeder are intermittently operated in accordance with signals from an upper limit level meter and a lower limit level meter provided on the pipe.

Abstract: An extrusion blow mounding control system for controlling parison wall thickness in an extrusion blow moulding machine includes a wall thickness controller for controlling the width of an extrusion die gap defining parison wall thickness within the machine, an interface unit for supplying an input signal to the wall thickness controller dependent on an actual position signal from a position transducer indicative of the actual position of a movable die member delimiting the die gap, and an output for supplying a desired position signal from the wall thickness controller to an electrohydraulic servo valve for controlling the position of the movable die member to provide a desired width of the die gap.

Abstract: When molding is carried out by injecting and charging a measured resin into a mold by a pushing-out member, a measured value of a stroke length of the pushing-out member is calculated and set in advance when the pushing-out member is advanced up to the maximum forward position. The stroke of the pushing-out member is measured from the maximum forward position based on the measured value at a time of a measuring. The pushing-out member is advanced from a measuring completion position to the maximum forward position and then the injecting is carried out. Accordingly, a pressure retaining process becomes unnecessary for reserving a cushion amount and controlling a pressure, and also the resin is charged into the mold based on an always constant molten time. Therefore, a molding product can be made uniform.

Abstract: Provided is a method for continuously forming a synthetic stone having a thickness with a high degree of accuracy, without using a complicated apparatus, in which resin compound is filled between belt-like upper and lower films in two layers running horizontally on a band-like floor, upstream thereof, so as to continuously form the synthetic stone, a regulating plate 31 is disposed above the band-like floor 3 and downstream of the resin filling part, and the resin compound (R) is continuously filled in a condition in which the gap between the regulating plate and the band-like floor 3 and is set to a predetermined value. Further, the filling volume of the resin compound is adjusted in accordance with a variation in the thickness of the formed resin plate having passed through the regulating plate.

Abstract: A unique composite material impregnated with a heat curable resin comprising a layer of conductive fibers and one or more resin carrying layers is utilized to reinforce utility poles by wrapping the material around a portion of the utility pole and causing a current to flow through the conductive fibers to resistively heat the material to the resin. The composite material can also be incorporated into molds to produce cured composite parts. The composite material is also used in the construction of large parts without the need for huge, expensive molds. The conductive fibers in composite parts are oriented in a manner to ensure that the entire part is thoroughly heated during the curing process.

Abstract: Apparatus for dispensing predetermined quantities of particulate material is disclosed which includes a casing defining a dispensing chamber and an inlet tube for delivering material to the chamber. The inlet tube extends into and is surrounded by the chamber. The chamber has an outlet for discharging material from the chamber. A mechanism is provided for effecting relative movement between the tube and the casing whereby to vary the volume of material introduced into the chamber on opening of an inlet valve.

Abstract: Methods and apparatus for rapidly drying and compacting wet fiber mats are disclosed. Rapid drying is produced by heating the wet fiber mats with a combination of radiowave energy and conductive heating. As the fiber mats are heated, three-dimensional compacting forces are applied by pressing the fiber mats between a flat surface press and a porous support on which is mounted a resilient mold insert. At high radio frequencies in the microwave range, power is transmitted from a multimode cavity through the porous support and resilient mold insert to the fiber mat. At low radio frequencies, differential radio-frequency voltages are applied directly to metal press plates which contain and compact the fiber mat. Methods and apparatus can be adapted to conveyorized or multi-opening press operations. Objects suitable for use with the invention are most commonly characterized by having a flat face surface on one side and webs or other features which may extend normal or generally normal to the flat surface.