Abstract: A horizontal multistage press apparatus 1 (multistage drying apparatus) includes conveyance paths R1 to R4 (first to fourth conveyance paths) in which the veneer sheet W1 (sheet material to be treated) is carried out in a standing state. The conveyance path R1 is positioned over between the loader device 10 and the hot press device 20, the conveyance path R2 is positioned over between the hot press device 20 and the open transpiration device 40, the conveyance path R3 is positioned over between the open transpiration device 40 and the temperature control press device 50, and the conveyance path R4 is positioned over between the temperature control press device 50 and the unloader device 60. The conveyance paths R1 to R4 are arranged in a straight line in plan view.

Abstract: A system for crafting railroad crossties of compressed bamboo is described. The system employs a hydraulic press configured to effectively compress multiple stalks of bamboo into a strong unified beam within a mold. Bamboo is first mashed, dried, and treated. A resin is employed as a permanent adhesive, binding the stalks together. The bamboo is stacked within a mold and compressed under the pressure exerted by the hydraulic press. An oven is used to heat the compressed bamboo, and then the bamboo is cooled. The compressed bamboo beam may then be trimmed to remove excess bamboo, and is cut into crosstie segments if needed. The resulting crosstie is sturdy, ecologically friendly, and rapidly manufactured.

Abstract: A post cure tire inflator is provided for use with a tire press to inflate and cure vulcanized tires. The post cure inflator includes a frame fixed between a pair of outer support columns, a first movable beam that is linearly movable relative to the frame, and a second movable beam that is linearly movable relative to both of the frame and the first movable beam. A pair of inflator stations is arranged in a vertically separated formation with each inflator station including a pair of axially aligned, vertically separable tire inflating chuck rings. One of the tire inflating chuck rings from each pair of inflator stations is secured to the frame, and the other tire inflating chuck ring from each pair of inflator stations is secured to one of the first and second movable beams.

Abstract: A rubber vulcanizer includes: a pair of heat plates disposed to be opposed to each other in a prescribed direction and to be apart from each other in the prescribed direction; and one or more dies for rubber molding stacked on each other in the prescribed direction between the heat plates. The rubber vulcanizer is able to realize either a state in which the dies of which the number is N are stacked on each other in the prescribed direction between the heat plates, or a state in which the dies of which the number is (N+1) are stacked on each other in the prescribed direction between the heat plates, where N is a natural number that satisfies at least a condition that 1?N?M, and M is a certain positive integer.

Abstract: A preforming device and method of use thereof, the device including a rack, a pinion, belt, belt tensioning feature, and mechanism for supporting a variably appliable enhanced pressure, such as may be applied using a bladder or bladders having one or more valves, the device capable of engaging a mandrel to form at least one ply and a binder against the exterior of the mandrel.

Abstract: A laminate of thermoplastic polymeric films comprises a fluted ply A and non-fluted ply B, adhered to one another in bonded zones along some of the flute crests the fluted ply A. The wavelength of the flutes is preferably no more than 3 mm. Ply A has a generally uniform thickness or can have attenuated zones of lessor thickness extending parallel to the flute direction, each bonded zone being located mainly within an attenuated zone. The flutes can be sinuous with crests on both sides of ply A and can be adhered on each side to a ply B. The flutes can be filled with filler material, including reinforcement strands, and one or both sides can be perforated. The method and apparatus employ aligned grooved fluting rollers and a grooved laminating roller.

Abstract: A apparatus for pressure casting sanitary appliances including an outer framework, at least one block slidable within the outer framework arid having a male mould part and a female mould part, a fixed endpiece for said framework being provided with the male part which is adapted to be inserted into the female part of said at least one block, a movable head of the framework being provided with the female mould part which is adapted to receive the male part of said at least one block, means for thrusting said movable head in the direction of said fixed endpiece, and means for feeding pressurized slip into the cavities which form when said locks are positioned one against the other, wherein at least the mould portion defining the cavity of the female mould part is surrounded by at least one inflatable element provided with a pressurized fluid.

Abstract: An apparatus for press forming products having a desired shape from a web is provided. The apparatus includes a cyclically operating blanking section for cutting the web to produce a single blank for each blanking cycle and a cyclically operating forming section for receiving a plurality of single blanks from the blanking section during a first portion of each forming cycle and for press forming the plurality of single blanks into a plurality of three dimensional press formed paperboard products having the desired shape during a second portion of each forming cycle. The forming section includes a die set having a plurality of forming die cavities wherein each of the forming die cavities receives a single blank. The blanking section operates cyclically at a predetermined rate r and the die set of the forming section includes n forming die cavities, the blanking section operating at n cycles for each forming cycle and the forming section operating cyclically at a rate r/n.

Abstract: Molding press apparatus (20) for simultaneously operating a plurality of molds (M) having multiple mold parts (M1, M2) including, a framework (25), first and second platen assemblies (U,L) supported by the framework for carrying the mold parts of the molds, a third platen assembly (I) interposed between the first and second platen assemblies for mounting mating mold parts in opposed relation to the mold parts carried by the first and second platen assemblies, a drive assembly (80) for simultaneously moving the first and second platen assemblies relative to the third platen assembly for opening and closing the molds. Loading and unloading apparatus (150) may be provided for simultaneously transporting preformed fiber reinforcements (R) to the molds and for transporting molded parts (P) away from the molds associated with the platen assemblies.

Abstract: A desynchronously opened, stacked, multi-parting molding system includes left, center and right molding blocks for defining a left molding cavity between the left and center molding blocks and a right molding cavity between the center and right molding blocks; a positioning mechanism for moving the left, center and right molding blocks along a common axis with respect to each other for desynchronously opening and closing the left and right molding cavities by retracting the first means and for simultaneously clamping both molding cavities in a closed position by protracting the first means, a locking mechanism for locking one molding cavity in a closed position while both molding cavities are clamped in a closed position and for maintaining the one molding cavity in a closed position while the other molding cavity is in an open position; and a clamping mechanism within at least one of the molding blocks that define the closed cavity provides axial clamping force while the first means is retracted to open the

Abstract: A method for producing high purity silica and ammonium fluoride from silicon tetrafluoride-containing gas wherein silicon tetrafluoride-containing gas from the acidulation of phosphorus-containing rock is recovered and the liquid entrainment is separated from the gas. The recovered gas is converted to an ammonium fluosilicate solution and is ammoniated to produce high purity silica and ammonium fluoride. The recovered gas can be converted to an ammonium fluosilicate solution either by absorbing the gas directly in a solution of ammonium fluoride or by first absorbing the gas in water to produce fluosilicic acid and then reacting the fluosilicic acid with ammonia or ammonium fluoride.

Abstract: A manufacturing device has an outer chamber in which a tool is mounted. The tool is shaped to receive a thermoplastic or staged prepreg. The tool has heaters embedded within it. The chamber region between the tool and the inside wall of the chamber is filled with polysilicone polymer and pressurized to a low pressure such as 50 pounds per square inch. To insure prepreg compaction the chamber is then pressurized in the range of 3,000 pounds per square inch. The chamber to insure prepreg compaction is then pressurized and as is the polysilicone polymer to a pressure in the range of 3,000 psi. At the completion of the temperature/pressure cycle, the cured product is removed from the tool.

Abstract: A method and apparatus for forming corrugated plywood composites is disclosed. The apparatus includes a fixed mold component having a corrugated surface and a series of movable mold components having complemental corrugated surfaces movable toward and away from the fixed surface. Movable mold components are hingedly connected and each such component is associated with a linear motor. By sequentially activating the linear motors each movable mold section is pivotally advanced in a first direction toward the fixed mold component the opposite side of the movable mold component being pivoted toward the fixed mold component when the next adjacent section is advanced into clamping position. High tensile strength low coefficient of friction fabric webs are interposed between the surfaces of the mold and the composite material to be corrugated.

Abstract: A system for producing generally concavo-convex synthetic plastic containers and like articles, such as picnic plates wherein a mold station has a stationary intermediate mold with projecting male mold parts on one side and directly opposite recessed female mold cavities in alignment therewith on the other side. A first movable mold, on the side of the intermediate mold having the male mold parts is provided with recessed mating female mold cavities of the same dimensions as the said cavities in the intermediate mold and a second movable mold on the other side of the intermediate mold has aligned projecting male mold parts mating with the cavities in the intermediate mold. A pair of heated, moldable synthetic plastic webs are advanced in unison to opposite sides of the intermediate mold and are later removed in unison from the mold station. The heated sections of the webs are moved in unison to opposite sides of the intermediate mold when the said first and second movable molds are separated therefrom.

Abstract: A press for vulcanizing annular elements, in particular belts for motion transmission is provided. The press can be used to vulcanize belts having different dimensions and shapes. A device for varying the distance between the pulleys on which the belts are mounted for the vulcanization is separated from the vulcanizing device and provides for variation of the distance between the pulleys for loading and discharging the belts.

Abstract: Control of a laminating press is attained by monitoring the temperature of the heating medium circulating through the press components.

Abstract: The invention includes a sheet moulding machine and a roller for use with the machine. The roller is wave-shaped along its longitudinal axis and/or is cut with one or more longitudinal grooves. This roller is located in the sheet moulding machine together with an adjacent co-operating surface such as a flat-surfaced roller. The moulding composition is extruded between the rollers.

Abstract: A mobile forming station is provided which longitudinally orients plant fibers and compresses them into slugs. A plurality of bonding stations each include a plurality of chambers selectively positionable in alignment with an ejector of the forming station to receive slugs of fibers. Once the chambers are filled with slugs, a bonding substance borne by the fibers is cured to unite the fibers. The chambers are defined by spaced platens which are movable as a unit to sequentially align the chambers with the ejector of the forming station. The ejector includes a tubular nose which enters the chamber as the fibers are inserted to ensure that the slugs, after insertion, are of uniform density. The platens are converged to compress the slugs within the chambers. The platens are mounted on a movable carrier which is displaced away from the forming station each time that a slug is inserted into the chamber against a rear compression wall of the chamber.

Abstract: Relatively simple modifications of an existing three-deck vulcanizing press make it possible to greatly improve press productivity with a small investment in new equipment. The press is modified by providing a manually or automatically controlled wedge lock assembly including separate power locking means located adjacent the upper and lower platens, respectively, and having releasable wedge means for locking each pair of mold halves together.In a typical cycle for manufacture of rubber articles, each vulcanizing mold is held open for a period of time, such as 30 to 60 seconds, to permit unloading of the vulcanized rubber pieces, cleaning and/or coating of the mold surfaces, and reloading of the mold cavities as required while the other mold is locked in a closed position and heated to continue the curing of the rubber.

Abstract: A process is disclosed for greatly improving the productivity of three-deck injection and compression and/or transfer molding presses used for making vulcanized rubber articles in which pressures are applied to both the upper and lower sets of vulcanizing molds for only short periods of time and one set of molds is locked together and continues to vulcanize the rubber parts while the other set is held open to permit unloading and reloading.During each cycle each vulcanizing mold is held open for a period of time, such as 30 to 60 seconds, to permit unloading of the vulcanized rubber pieces, cleaning and/or coating of the mold surfaces, and reloading of the mold cavities as required while the other mold is locked in a closed position and heated to continue the curing of the rubber.

Abstract: This disclosure includes entry and delivery clamps arranged on opposite sides of a multiplaten press for clamping belting in order to apply a tension to the belting prior to pressing. The tension is applied by moving the entry clamp in a direction away from the press. The belting is fed over support rollers on opposite sides of the press which receive the belting from different openings of the press. These rollers are caused to move before the press is closed to maintain the belting away from the hot platens of the press, then moved in concert with and in the direction of the platens during pressing and then, if required, they may be moved independent of the platens when the press has been opened after pressing to effect a stripping of the belting from the platens.

Abstract: A multilevel vulcanizing press is provided which includes a press housing having at least two press levels. Each press level is capable of receiving a molding tool which can be opened and closed within the press housing. Each molding tool is comprised of a plurality of molding plates and can be opened at right angles to the mold parting plane. First and second servicing stations are provided on different sides of the press housing, with each station being able to accommodate a molding tool from each level of the press housing. A first holding station is provided between the press housing and first servicing station for receiving a molding tool from each level of the press housing and a second holding station is provided between the press housing and second servicing station for receiving a molding tool from each level of the press housing. Guide means are provided for guiding each molding tool from the press housing into one of the holding stations and into one of the servicing stations and vice versa.

Abstract: A web of unvulcanized rubber or other curable material moves intermittently in generally horizontal passes through several superposed stages of a multiplaten press by way of a pair of stretching stations flanking the press, each stretching station including a clamp and, with three or more curing stages, at least one deflection roller for the web. Each clamp has at least two jaws which are closable around one or more web passes and, together with the associated deflection roller or rollers, initially hold these passes substantially on the level of the midplanes of the spaces between the open press platens. From this position the jaws and rollers are jointly displaceable in a vertical direction (e.g. downwardly), after a stretching of the web by an outward movement of the clamps and/or the rollers, into a position in which the several passes come to rest simultaneously on the heated platens between movable spacing strips. The platens thereupon successively close in the opposite vertical direction (e.g.