Abstract:
An inflatable structure includes a first side of a first material and a second side of a second material different from the first material. A sidewall connects the first and second sides, and a seam extends around the sidewall joining first and second portions of the sidewall. The first and second portions are secured to one another by thermoforming, and an inflation valve is positioned in the sidewall. The inflatable structure may be formed by heating the first and second sheets of material to a temperature above their glass transition temperature and below their melting point, compressing the first and second sheets of material together in a mold having an opposed pair of cavities such that the valve extends through the seal and is in fluid communication with an interior and exterior of the inflatable structure, and trimming excess material from the periphery of the inflatable structure.
Abstract:
The method of manufacturing a multilayer optical recording medium according to this invention is a method of manufacturing a multilayer optical recording medium, having two recording layers deposited, with a spacer layer sandwiched therebetween, on a substrate (D1) formed with a central mounting hole (1a). In forming the spacer layer between a second recording layer (L1) and a first recording layer, the substrate (D1) which has a fitting protrusion (D1a) formed around the central mounting hole (1a) is fixed to a turntable (12) in a state where a center pin (12c) of the turntable (12) is inserted through the central mounting hole (1a). After a coating liquid (R) is dropped onto the substrate (D1) at a predetermined location radially outward of the fitting protrusion (D1a), the stamper (21) is placed over the substrate (D1) while fitting a fitting groove (21b) and the fitting protrusion (D1a) to each other. Then, the turntable (12) is caused to rotate to thereby spin-coat the coating liquid (R). This makes it possible to form the spacer layer without making the recording layers off-center.
Abstract:
A mold to make a plastics material piece includes two parts defining a cavity corresponding to the piece to be made, each part has a peripheral zone for coming into contact with the other part's peripheral zone to define the mold's joint face. One part is made up of two blocks, namely a central block and a peripheral block, the two blocks suitable for sliding relative to each other in the mold closure direction, and the peripheral block capable of movement so as to move the peripheral zone away from the edges of the sheet. A method of making a plastics material piece includes placing a sheet in a part of a mold, moving a peripheral block, closing the mold, and moving the peripheral block to a molding position while keeping the first and second peripheral zones in contact.
Abstract:
An apparatus for molding and a molding method utilizing a moveable mold platen which may hold, have affixed to, or carry a first portion of a mold or molds. A second or door platen may hold, have affixed to, or carry a second portion of a mold or molds. The door platen is placed in its closed position, and the moveable mold platen is brought up adjacent to it, so that the two portions of the mold are brought into engagement with one another. A desired molding material is injected into the mold cavity, after which the moveable platen is retracted, the door platen is opened, and the part is removed. A part to be encapsulated may be placed into the mold before the two portions of the mold are brought into engagement.
Abstract:
When manufacturing a foil-wrapped breast prosthesis with a filling consisting of a curable compound, the curing is performed after placing a filled prosthesis bag formed by two joined foil sheets in a mould cavity without closing the mould cavity and maintaining vacuum at least in the beginning of the curing, whereby especially an increased degree of freedom is obtained with respect to shaping the rear side of the prosthesis, so that this, among other things, can be provided with thin edge parts for obtaining good fitting to the body. To ease the mounting of the bag and the accurate positioning of this in the mould cavity, the latter is formed in a first mould part of a shaping tool, which furthermore comprises a tightening frame having a packing, which provides an unambiguously oriented tightening of the bag when this is placed in the mould cavity.
Abstract:
The compression molding machine is capable of maintaining dies parallel, precisely clamping work pieces and improving quality of molded products and productivity. The compression molding machine of the present invention comprises: a fixed platen 28; a movable platen 38; a fixed die being held by the fixed platen 28; a movable die being held by the movable platen 38; an open-close mechanism including a screw shaft connected to the movable platen, the open-close mechanism 41 turning the screw shaft 43 so as to move the movable die to and away from the fixed die, whereby the dies can be opened and closed. The fixed die can be taken out from the fixed platen 28 in the direction crossing the open-close direction of the movable die.
Abstract:
Die opening apparatus (50) of a die-casting system (10) is operable to open a die (D1, D2). A first cylinder (51) may perform an initial die opening operation and a second cylinder (55) may perform a subsequent die opening operation. The thrust generated by the first cylinder is preferably directly transmitted to the die in a die opening direction, optionally via a push pin (52).
Abstract:
There is provided a method for manufacturing a structural body comprising: a structural body formation step of forming the structural body by combining a plurality of constituent members through a bonding adhesive; a closed space formation step of disposing the structural body into a pressurizing or heating unit, forming a closed space with at least one of the structural body and the pressurizing or heating unit, and charging an elastic body into the closed space; a hardening step of fixing or hardening the bonding adhesive through the elastic body by the pressurizing or heating unit; and a discharge step of discharging the elastic body from the closed space.
Abstract:
The spring plunger of the present invention comprises: a body; a stopping portion for stopping the body; a pin whose projection height from the surface of a plate is to be precisely decided; a spring connected with the pin, and spring stopper for fig the end of the spring. When the stopping portion contacts a pit surface provided on the surface of the plate, the body of the spring plunger does not proceed any more in the female screw in the plate. Thus, the pin projection height from the surface of the plate is kept constant. According to the present invention, the pin projection height from a surface of an object body such as a mold surface can be controlled easily and precisely.
Abstract:
A method and apparatus for compression molding plastic articles such as closures include a plurality of tools mounted in opposed pairs with the tools of each pair including opposed male and female mold sections. The tool pairs are mounted for motion in an endless path. The tool pairs and associated mold sections are closed during motion in the path for compression a molding charge in the mold cavity formed between the mold sections of each pair, and opening the mold cavity to release an article formed between the mold sections. A latch mechanism is associated with each pair of tools for holding the tools and mold sections in the closed position during motion in the path independent of the mechanism for closing the tools and mold halves. In this way, forces imparted to the mold halves and tools to hold the mold closed are isolated from the machine frame. The latch mechanism is selectively unlatched to permit opening of the mold halves and release of the article compression-molded between the mold halves.