Abstract: The invention relates to a device for processing an edible product in the form a viscous to pasty mass (1), especially an edible product based on a fat mass, such as chocolate, or based on water, such as ice cream. Said device comprises a dosing unit (2) for the dosed delivery of a specific volume of the mass (1) to shaping units (13). The movement of the displacement element (6) determining the dosage volume is performed via servo drive (9) while an inlet (4) and an outlet (5) are closed and opened via servo drive or pneumatic drive, respectively. Preferably, the displacement element is embodied as a combined lifting/rotating plunger (6) which can perform a linear movement for a suctioning lift and a dosing lift while being able to perform a rotary movement for opening and closing the inlet (4) and the outlet (5), i.e. a valve function.

Abstract: The invention relates to a device for moulding a plastic article in which the article is obtained by the compression of a metered quantity of plastic (3) in the molten state between the two parts of a mould, comprising at least one supply of plastic (1), a rod (11), sliding in a sleeve (8) suitable for temporarily supporting said metered quantity of plastic (3), a mould for the head of the article (6, 7) and a mandrel (18) cooperating with said mould (6, 7), the sleeve (8) having an upper face (16) and a lateral wall (17), the device being characterized in that it includes means for depositing the metered quantity on the sleeve (1, 2), which means are designed so that the amount of plastic (22) lying above a plane (20) coinciding with the upper face (16) of the sleeve (8) is between 20% and 40% of the total mass of the metered quantity (3). The invention also relates to a method using the aforementioned device.

Abstract: A material handling system for a hydrolyzer, comprising a material injection assembly further comprising a ram, a cylinder having a cylinder shaft for reciprocating the ram upon actuation of the cylinder shaft, a sleeve having an interior in which the ram reciprocates during use; a gate having a gate plate operable from between an open and a closed position; the gate plate has an aperture formed therethrough and the aperture is sized to enable a plug of compressed municipal solid waste to pass through it when the gate plate is in the open position; and a material exit assembly. The preferred material handling system further comprises a gate plate is interpositioned between the pair of space apart end plates and reciprocates freely therebetween. The end plates are configured to allow a plug of municipal solid waste to pass therethrough.

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: The invention relates to a concrete-block-making machine having a part which is displaceable via a linear drive, the linear drive comprising a drive unit and a linear guide for guide rollers, the drive unit comprising at least one linear motor and the linear guide comprising at least one guide rod for the guide rollers, the at least one guide rod and the guide rollers movable relative thereto being hardened, and guide rollers and guide rod being arranged with slight play relative to one another.

Abstract: Thermoplastic polymers, rubbery polymeric components and reinforcing fillers are mixed and heated to a range of 380° F. to 440° F. The resulting mixture is then fed into a BANBURY mixer, with the resulting mixture fed into a diverter feeding two molds. The velocity of the piston of each mold being filled is controlled to thereby control the density of the molded product along its length (BANBURY is a registered trademark of Farrel Corporation). As each mold is filled, it is deposited in a cool water bath (50° F.–60° F.) while the next mold is being filled. The molds are sequentially transferred to an air cooling rack to complete the process. A texture, generally comprising indentations perpendicular to the longitudinal axis on the molded object, provides a frictional surface between the railway crosstie and the ballast beneath the crosstie.

Abstract: An apparatus for supplying a mold charge for a mold cavity in accordance with one aspect of the present invention includes a mold charge chamber having a longitudinal dimension and at least two lateral inlets for supplying resin materials to the chamber such that the materials are stratified longitudinally of the chamber. A plunger is movable longitudinally into the chamber to force the stratified materials out of the chamber and thereby provide a stratified mold charge for a mold cavity. The at last two lateral inlets to the chamber preferably are spaced from each other lengthwise of the chamber. In one embodiment, the plunger has a contoured end for imparting a contour to the mold charge as the mold charge is forced from the chamber. A gate preferably is positioned at an end of the chamber remote from the plunger for selectively closing the chamber for filling and opening the chamber for discharge of the mold charge.

Abstract: A material handling system for a hydrolyzer comprises a material injection assembly having a ram; a sleeve in which the ram reciprocates during use; a gate plate operable from between an open position, wherein a plug of municipal solid waste may exit the sleeve, and a closed position; and a material exit assembly. The material exit assembly comprises a processed material handling apparatus including a processed material compaction chamber; and a plunger assembly attached to the compaction chamber and further including a working cylinder having a cylinder shaft and a ram operably connected to the shaft enabling the ram to compact the processed material within the compaction chamber upon actuation of the cylinder and the extension of the shaft therefrom.

Abstract: A high volume lens curing system is described. The high volume lens curing system may be configured to cure multiple eyeglass lenses in a continuous manner. An embodiment of a system may include a mold assembly, a lens curing apparatus, a mold filling apparatus and a controller. In some embodiments, the system may include a conveyor system and/or a coating apparatus.

Abstract: A device suitable for use by children which recycles broken crayons and other materials by melting and molding. A stationary melting pot securely retains the charge material during heating. A housing substantially surrounds the melting pot and an associated mold chamber to isolate young operators from all heated surfaces. The melting pot is charged from outside of the housing by use of a filling port. A remotely operated gate controls the flow from the melting pot to a mold. A door provides access to the mold when open and prevents access to the mold chamber when closed. A warning light glows when a heating element for the melting chamber is energized. Various safety switches interrupt power to the heating element if certain conditions are not met.

Abstract: An apparatus for adding a coloring agent to a material used to manufacture brick includes an extrusion container having an opening defined in the sidewall thereof. A coloring agent supply communicates with the opening for delivery of the coloring agent to the interior of the container as brick making material passes through the container. A storage device stores the coloring agent supply amount data corresponding to a supply amount for each of a plurality of brick types, each of the plurality of brick types having a different appearance. A controller is adapted to control a supply of a coloring agent from said coloring agent supply into said extrusion container in accordance with a selected brick type. A computer can be connected to the controller for data transfer. Accordingly, the computer can be used as an interface between a user and the apparatus.

Abstract: A measured amount of a material that is crosslinkable by impingement of a suitable form of energy, especially UV light, is introduced into a two-part mould of which cavity determines the shape of a moulding to be produced. The two mould halves are held a small distance from one another so that a thin annular gap is formed between them, which gap is in communication with the mould cavity and through which gap excess material can escape. The crosslinking is triggered by impingement of the selected form of energy, the impingement being spatially restricted to the cavity by suitable masking so that material disposed outside the mould cavity is not crosslinked. In that manner mouldings are obtained that do not require subsequent mechanical processing, and the mould is reusable. The process is especially, but not, however, exclusively, suitable for the manufacture of contact lenses.

Abstract: Hollow core concrete slabs are extruded through a compaction chamber of an extruder by a plurality of augers with forming elements at their downstream ends. A divider is supported within the compaction chamber to extrude two concrete panels at a time on opposing sides of the divider. A top plate of the compaction chamber carries vibrators on opposing sides of the divider. The top plate includes a relief formed therein in alignment with the divider to permit some independent compaction on opposing sides of the divider. The divider is fixed in relation to a frame of the extruder with a clearance gap between the divider and the top plate being provided. When extruding interlocking tongue and groove panels, the forms for the grooves are supported on opposite sides of the divider while forms for the tongues are supported on the outer sides of the compaction chamber for improved compaction of concrete at the divider.

Abstract: A metering device is disclosed for use in a plastics moulding machine having a mould cavity, relatively movable platens and a feeding passage for feeding a plastics melt into the mould cavity. The metering device comprises a heated block interposed between the feeding means and the mould cavity. A cylinder with a moving piston is formed in the block. A first passage in the block connects the cylinder to the feeding means and a second passage connects the cylinder to the mould cavity. Valves in the passages enable the cylinder to be filled by the feeding passage without the plastic melt entering the mould cavity and subsequently enable the desired dose of plastics melt, when ejected from the cylinder by the piston, to flow from the cylinder to the mould cavity without being returned to the feeding passage.

Abstract: A method forms a concrete block, particularly but not exclusively a composite block with a reflective fascia portion. The block is formed by a dry-cast technique, in which mixture for forming the block has a water/cement ratio less than or equal to 0.35, in combination with application of a compaction force so that the resultant block complies with compressive strength requirements set out in BS 6717: part 1: 1993.

Abstract: A high volume lens curing system is described. The high volume lens curing system may be configured to cure multiple eyeglass lenses in a continuous manner. An embodiment of a system may include a lens forming composition heating apparatus and a controller.

Abstract: A children's toy for making confections of preselected designs. The toy includes a base platform, and confection mold trays adapted to be stacked on the base platform. The base platform includes a vertical alignment structure for aligning the confection mold trays, as they are stacked on the base platform. The confection mold trays include at least one mold cavity for forming confections from a confection solution.

Abstract: A method and apparatus for combining raw fibrous and binding materials in a single mixing step (Step S3), followed by consolidation (Step S5) so as to greatly shorten the overall cycle time to a finished fiber-reinforced composite part. Chopped fibrous materials and binder materials are deposited sequentially onto a belt conveyor (Step S2) so that the materials are successively layered, one on top of each other in a predetermined ratio, and subsequently mixed (Step S3) to achieve uniform dispersion throughout. The mixed materials are then deposited into a rotating mold (Step S4) to further ensure uniform dispersion of fibrous and binder materials. Impregnation of the fibrous materials with the binder material occur in-situ as the uniformly mixed materials are heated and subsequently compacted in the mold (Step S5) to obtain the desired shape of the fiber-reinforced composite part.

Abstract: The present invention provides a method and an apparatus for producing a polyimide molding which have superior productivity and accuracy of dimension. The invention particularly relates to a tubular polyimide applicable to an electrophotographic device, such as a laser-beam printer and a copying machine, or a precision driving belt required for high strength and high dimensional stability.

Abstract: A molten material supply unit includes a heating cylinder. The heating cylinder may receive and heat the material in a substantially vacuum condition. A molding apparatus may include a pressurizing and charging unit in addition to the molten material supply unit. The pressurizing and charging unit is adapted to receive the melted material from the molten material supply unit and to charge the melted material into a die under pressure.

Abstract: A method and system for casting a thermoset layer over a golf ball precursor product is disclosed herein. The system includes multiple stations connected by a conveyor system. The thermoset flowable material is dispensed into a plurality of cavities on each of the mold halves. A plurality of golf ball precursor products are then centered and inserted into the first mold half cavities. The mold halves are mated, heated and cooled. Then, at a de-molding station, the mold halves are separated and the thermoset layered golf balls are removed from the second mold half. A preferred thermoset material is a thermoset polyurethane.

Abstract: A foamed thermoplastic resin fiber reinforced part is provided. The part comprises a member formed of thermoplastic resin, a plurality of cells and a plurality of reinforcing fibers dispersed within the member, and a skin formed on at least one exterior surface of the member. The skin is substantially devoid of cells. Here, the reinforcing fibers have a length of about 25 mm in an amount of about 10% by weight of the foamed thermoplastic resin fiber reinforced part. At least one of a cell density and a cell size of the plurality of cells is inversely proportional to the amount of the reinforcing fibers dispersed within the member.

Abstract: A method and system for casting a thermoset layer over a golf ball precursor product is disclosed herein. The system includes multiple stations connected by a conveyor system. The thermoset flowable material is dispensed into a plurality of cavities on each of the mold halves. A plurality of golf ball precursor products are then centered and inserted into the first mold half cavities. The mold halves are mated, heated and cooled. Then, at a de-molding station, the mold halves are separated and the thermoset layered golf balls are removed from the second mold half. A preferred thermoset material is a thermoset polyurethane.

Abstract: A method and apparatus for casting a molten material using a phase-change material. A funnel means is provided that includes a reservoir containing a phase-change material. The funnel means is used in conjunction with a mold. The phase-change material is heated to a temperature above its melting point. A molten material is poured into the mold, and an excess amount of the molten material is retained in the funnel means after the mold is filled. The latent heat of fusion of the phase-change material provides heat to the funnel means as the phase-change material changes from a liquid to a solid. The heat from the phase-change material maintains the temperature of the molten material within the funnel above its melting point as the molten material within the mold begins to solidify and contract, thereby permitting the excess material within the funnel means to feed into the mold and fill any voids or porosities formed by the contraction of the material within the mold.

Abstract: A template is placed over a mold cavity, with the template including a series of orifices which extend over substantially the entire surface of the mold cavity. Molten plastic is passed through the orifices in a pattern corresponding to the shape of the article to be molded, and the molten plastic is formed into a molded article having the shape of the mold cavity.

Abstract: A block ramming machine is provided that includes: (a) a ramming chamber structure having a longitudinal axis, an input end, an output end, and a ramming chamber located between the input and output ends, (b) a headgate assembly located near the output end of the ramming chamber, wherein the assembly comprises a headgate that can have at least an open position and a closed position, (c) a fill chamber structure positioned along the longitudinal axis and having a first end, a second end, and a fill chamber located between the first and second ends, the input end and the second end being coupled so that the material can be transferred from the fill chamber to the ramming chamber, (d) a ramming plate for pushing the material from the fill chamber to the ramming chamber, and (e) an actuator for moving the ramming plate along the longitudinal axis from a position in the fill chamber to a position in the ramming chamber, thereby transferring the material from the fill chamber to the ramming chamber to form a block.

Abstract: An apparatus having a single screw extruder and a twin screw extruder. The extruders are designed to operate intermittently in a batch-type process. The single screw extruder contains a plurality of barrel segments with an internal cavity, an inlet and a transfer die located at an outlet. The barrel segments provide processing flexibility in that the L/D ratio of the single screw extruder can be varied to accommodate various materials, fillers and material throughputs. The twin screw extruder includes a body having an internal cavity disposed therein. The body includes an inlet at a first end, an outlet at a second end and an inlet located along the length of the twin screw extruder to accept fiber material (fibers) from a side stuffer. A transfer valve is connected to the outlet of the twin screw extruder. The transfer valve controls the flow of melt from the twin screw extruder into an injection plunger.

Abstract: A method and apparatus for removing layers from a circuit side of a semiconductor die includes the use of a holder, for example a semiconductor wafer having an opening therein for receiving the semiconductor die. Additionally the holder can include one or more layers thereover which are removed at a similar rate as those layers which comprise the semiconductor die. A die is placed into the opening and a circuit side of the die is aligned with a front side of the holder, for example using a generally planar surface, and is secured to the holder with an adhesive material. Using a holder reduces uneven layer removal which is known to occur in conventional processing, for example excessive removal at the edges of the die. A potting jig which aids in aligning and securing the die to the holder is also described.

Abstract: A vacuum osmosis and solidification forming machine mainly comprises a forming chamber, a compressible hydraulic cylinder, a closed hydraulic cylinder, and a support frame. A solidifying material A and a pending solidification material B pre-dried and mixed uniformly in pre-determined dose ratio are guided into the air evacuated empty forming chamber to meet with a foggy liquid stabilizer or assistant. So that, the materials A, B are contacted sufficiently with the stabilizer for being thoroughly moistened by the capillary phenomenon and compressed to a minimum volume for being solidified.

Abstract: A microwaveable confection mold for use in a conventional microwave oven. The mold permits solid confection capable of melting when exposed to microwave energy to be introduced into the mold. The mold comprises a clear microwave transparent plastic material to facilitate observation of the confection melting process with subsequent settling in the mold sections. A pigment in the mold changes the colour to indicate to the user when the liquified confection has hardened and the mold cooled.

Abstract: In a method for producing a molded plastic article, individual portions of material are removed from a flow of heat-plasticized material which flows vertically downwards from a closable dispensing aperture of a dispenser and are transferred to a mold before being pressed by closure of the mold to form a molded article. The required portions are cut by cutting shears from the flow of material at a point below the dispensing aperture and at a distance from it. A device for the production of the molded plastic article has a closable mold and a material dispenser for heat-plasticized synthetic material which can be arranged above the molding chamber. The dispenser has a dispensing aperture which points towards the mold and can be closed by a closure unit and from which the flow of plasticized material emerges. A shearing device for separating the required portions of material is situated below and at a distance from the dispensing aperture.

Abstract: An I.S. glass forming machine is disclosed which has a plurality of individual sections each having a parison mold including a cavity having a first vertical axis. There is a trough assembly for each of the mold cavities which includes a deflector defining a second vertical axis. A horizontal beam supported by vertical uprights extends over the individual sections. The horizontal beam has a plurality of vertical openings corresponding to the number of individual sections of the machine which are in substantial alignment with the vertical axis of corresponding parison mold cavities. A corresponding plurality of hangers each defining a third vertical axis. The hangers are secured within the vertical openings with the third vertical axis coincident with the first vertical axis of a corresponding parison mold cavity and the trough assemblies are supported on a corresponding hanger with the third vertical axis of the hanger coincident with the second vertical axis of the supported deflector.

Abstract: A manual loader for use in bypassing an automatic pellet feeder for an automold machine used to encapsulate integrated circuit assemblies in plastic. The loader has a support mounted adjacent the mold section of the machine. The loader also has at least one pellet boat which moves relative to the support into and out of said mold section. The pellet boat includes one or more pellet pots which are adapted to receive and hold a solid pellet of material. The loader has a release mechanism which is movable between a blocking position and a release position. The release mechanism retains the pellets in the pellet pots in the blocking position and releases the pellets from the pots when manipulated to the release position for dropping the pellets into a mold of the machine's mold section.

Abstract: The fish bait molder is a two element mold in which one mold element is inserted into the other in a manner that the fish bait molder may be opened and closed. Each mold element has a portion of a mold cavity such that when the two mold elements are closed together a mold cavity is formed. An access port is contained in one of the two mold elements to allow insertion of a fish hook and removal of a baited fish hook. A slot is provided to allow a fish line to protrude out of the fish bait molder. There is a bait holder with a bait cavity attached to one of the mold elements. The bait cavity is filled with fish bait and a piston slides in the bait cavity to force the fish bait through an inlet passage into the mold cavity and around the fish hook. The piston can be operated by rotating the bait holder into a fish bait container having a threaded lid or rotating a rotational injector with a piston attached into the bait cavity. A ratchet mechanism may also be used to force the piston into the bait cavity.

Abstract: A movable pouring basin including a funnel-type sprue for use with a casting machine is aligned between a source of molten casting material and the downsprues of molds on an assembly line moving beneath the source of molten casting material.

Abstract: A moulding system for moulding a mass with a pasty or dough-like composition, such as a mass of meat, for example for moulding hamburgers, includes a housing having a chamber which is delimited by internal walls of the housing. The chamber emerges on the outside of the housing. A displaceable mould plate, which is formed in a manner corresponding to the chamber, fits with a small degree of play into the chamber and has at least one mould cavity. The housing has a feed opening, which opens into the chamber, for the mass to be moulded, such that, in the position in which the mould plate has been slid into the housing, the mould cavity is in communication with the feed opening and, in the position in which the mould plate has been slid out of the housing, the mould cavity is situated outside the housing.

Abstract: A system for producing a foamed isocyanate-based polymer includes a base line comprising a first mixing device operable in a first mode and a second mode and having an active hydrogen-containing compound input and an isocyanate input. A complementary line is provided and includes a second mixing device having a filler material input. In the first mode, the first mixing device receives a feed from the active hydrogen-containing compound input and the isocyanate input, mixes the feed to produce a first foamable polymeric composition, and dispenses the first foamable polymeric composition into a first mold. In the second mold, the first mixing device returns the feed, without mixing, from the active hydrogen-containing compound input and the isocyanate input to the second mixing device which mixes the feed with feed from the filler material input to produce a second foamable polymeric composition, and dispenses the second foamable polymeric composition in a second mold.

Abstract: An apparatus for making carbon discs for brake disc assemblies by feeding continuous strands of fibrous carbon material from spools into a die, the volume of the carbon material so dispensed being continuously monitored. A cutter terminates the dispensing operation and a debulking plate urges all of the fibrous carbon material so dispensed into the die alone. The material is compressed within a cylindrical annular die and, in one embodiment, is submitted to a convection curing oven where the preform is cured. Subsequently, the preform is carbonized, densified, and machined to form a final carbon disc brake. In another emobodiment, a dry preform is fabricated, obviating the need for curing and carbonizing.

Abstract: The invention relates to a system for dosed conveying and selecting of pellets for a moulding apparatus for lead frames, with which it is possible to prevent crumbled pellets or fragments and/or dust thereof being able to reach the molding apparatus arranged in a so-called clean room. For this purpose the system has structure for successively conveying pellets one by one, structure for selecting to length and feeding pellets to a transporting path, structure for reducing the transporting speed of conveyed pellets, structure for separating the pellets one by one and tranferring the pellets to a transport carrier, and means for transferring pellets from the transport carrier to a conveying device to a mold of a molding apparatus.

Abstract: A constant-rate feeding device can weigh out, with high accuracy and at a high rate, a powdery material containing fibrous substances and thus having a high entangling tendency, such as a material for a friction member. A powdery material A supplied from a belt feeder (17) is divided into a plurality of masses by a first vane wheel (3) and dropped onto a damper provided under the vane wheel. The powdery material deposited on the damper is divided into small masses and discharged by moving vanes (5a) of a second vane wheel (5) through openings (4a) of the damper. Thus, the material can be fed and weighed out with high accuracy. The damper (4) is moved out of the feed path of the material except during the final stage of weighing operation for increased weighing speed. The damper (4) may comprise a plurality of movable comb teeth. By moving or turning the comb teeth relative to one another, it is possible to adjust the area of the opening of the damper and thus the feed rate of the material with high accuracy.

Abstract: A loudspeaker cone assembly having a generally conical cone body and an annular flexible suspension rim. In making the cone assembly, a cone body having an outer free edge is placed within a female mold having an annular channel configured to form the suspension rim with the free outer edge of the cone exposed to the channel. A predetermined quantity of liquid plastic foam is deposited into the channel which is then substantially closed by a male die so as to seal off the cone body adjacent its outer free edge. The foam is then expanded and cured so that the resulting annular rim is integrally impregnated into the free outer edge of the cone body and forms high density closed-cell outer skin surfaces on opposite sides of a low density closed-cell inner core to provide a suspension rim having improved flexibility, strength and durability. A color coating may be applied to selective exposed surface areas of the suspension rim.

Abstract: The recycling of used polyurethane foam is made possible by a process in which the starting material is first dried to a moisture content of 2 to 4% and is then filled into a multi-part mold (16, 17, 18) that defines the molded part (32). The parts of the mold (16, 17, 18) are then, with generation of the necessary compression pressure of below 20 N/mm.sup.2, pressed together and locked. These molds (16, 17, 18) that are subject to the compression pressure are heated in a tunnel furnace (20) so that the molding material reaches a temperature of approximately 130.degree. C. After a predefined holding time, the molds (16, 17, 18) can be opened under pressure and the molded parts (32) can be removed. Molded parts (32) with a thickness of 42 mm and of corresponding size have been produced successfully with this process. Instead of the molds (16, 17, 18), it is also possible that a two-part tool is used.

Abstract: There is disclosed a novel process and apparatus for producing a light weight, self aligning, building block from straw, corn stalks, sugar cane, kenaf and like vegetable based fibrous materials wherein the vegetable based fibrous material is used as an aggregate base to be beat/mixed with one or more binders, sprayed with one or more wetting agents and deposited in to a mold to be subjected to sufficient compression forces having certain alignment enforcing capabilities, to form a pre-determined size, shape, density and thickness finished building block, then ejected for sufficient curing.

Abstract: A molding machine has a mold material supply device, a die setting device, a separating device and a deburring device. The supply device includes a mold material feeding device, an extruding device for receiving a mold material from the mold material feeding device and extruding the mold material so as to form an extruded mold material, a cutting device for cutting the extruded mold material, and a transfer device for receiving the extruded mold material from the cutting device and transferring the same.

Abstract: A process and apparatus for transforming contaminated material such as liquid wastewaters, into a solid and chemically stable composition which can be utilized as construction material, or which is safe for land disposal. The contaminated material is blended with solidification agents such as cement or lime until substantial amalgamation of the agent and material is completed. The contaminated material is contained within microencapsulation matrices which physically isolate the contaminated material from the environment. The apparatus is transportable and can be brought to the contamination site to transform the contaminated material into the solid and chemically stable composition.

Abstract: A process for manufacturing containers that are suitable for containing materials that are to be heated by microwave radiation or other heating equipment includes making a dilute liquid dispersion of quartz and/or glass fibers (very preferably microfibers), depositing them on the interior of a permeable female mold or form, from the dispersion by way of a pressure differential across the female mold, with the liquid passing through the mold, moving a male mold or form which matches the female mold, into and against the container in the female mold, terminating the pressure differential across the female mold, applying a pressure differential across the male mold to release the container from the female mold and press it against the male mold exterior, withdrawing the male mold, with the container held to it, releasing the container from the male mold and sintering the container, to make it form retaining.

Abstract: An apparatus for manufacturing a plastic molded part. A plasticized plastic composition is fed to the open mold cavity defined between a lower and an upper mold half. At least one web and perhaps two webs of decorative material to be applied to the molded part extend across the mold cavity. The closing of the mold halves presses the plastic composition against the web or webs. There is at least one two-part clamping frame for resiliently holding the web of decorative material by clamping it outside the mold cavity, so that the web can slip with respect to the composition as the mold halves move together. One clamping frame half is developed with an immersion edge which defines a side edge of the mold cavity and with a cutting plane spaced from the immersion edge a distance sufficient that the frame half also serves as an ejector for the molded part from the mold cavity as the mold halves open apart.

Abstract: An apparatus (10) for molding a thin-wall plastic shell includes a powder box (12) and a mold box (14). The powder box (12) is positioned to an operative position wherein an opening (18) in the powder box (12) is brought in proximity to the mold surface (20) of the mold. A contoured selective charge application panel (36) has a gasket (30) about the end thereof and the selective charge application panel (36) is extended vertically from the opening (18) at variable heights to perfect a sealed surface at the opening (18) and the periphery (22) of the mold surface (20) to mask vertically extending waste surfaces (14a, 14b).

Abstract: A machine for molding a starting crystalline saturated polyester resin such as polyethylene terephthalate includes a device for first drying and then preheating the starting resin to a temperature above its melting point to lower the viscosity of the resin to such an extent that the resin is not substantially degraded in the compression section of the molding machine. A feed section is provided for quantitatively feeding the molten starting resin to the main body of the molding machine. Accordingly, the starting resin is molded into a desired shape in a molding machine under conditions such that the crystallization temperature of the resulting molded article is within 20.degree. C. of the crystallization temperature of the starting saturated crystalline polyester resin.

Abstract: There is provided by the present invention a compression molding tool for producing apertures of a desired configuration in preselected locations in a compression molded article and a method for producing the apertures. The tool has first and second relatively movable tool halves each supporting a mold section. The mold section associated with the second tool half includes a movable portion that is relatively movable with respect to the second tool half. The first tool half is moved relative to the second tool half until the first and second mold sections engage each other to form a mold cavity therebetween. Devices for creating apertures are included on at least one of the mold sections and are extended into appropriately configured receptacles in the other mold section after the mold sections are engaged, but before molding material is forced by compression into the mold cavity.