Abstract: A composite torroid forming cup for an automated torroid-forming apparatus has a molded plastic upper closure and a bottom reinforced cup section. The upper closure has a hinge pin and an upper non-stick partial torroid forming surface. The bottom reinforced cup section has a substantially rigid reinforcing subframe and a plastic outer body portion that may be molded about the subframe. The bottom reinforced cup section has a bottom non-stick, partial torroid-forming surface. A method of making a composite dough torroid forming cup has several steps. A flat reinforcing plate is perforated with a plurality of apertures, and studs are spot-welded in a spaced relation onto the reinforcing plate. The reinforcing plate is positioned on a forming die and is formed thereon. The reinforcing plate is positioned in a mold, and plastic is molded about the reinforcing plate to form a reinforced bottom cup section.

Abstract: The present invention is directed to a composition comprising polystyrene with at least 0.1% (w/w) of an additive, the article of manufacture thereof, such as a mold for making contact lenses and the mold assembly containing said mold, and the use of such mold so to facilitate demolding from a two mold assembly in the process of making contact lenses.

Abstract: A shaping mold for the production of ultra-thin shaped rubber articles, has a main body which is dipped into a latex liquid so as to make the latex adhered to the surface of the main body. The adhered latex is heat-dried to form an ultra-thin shaped rubber article over the surface. The mold is such that at least the surface of its main body is made of an amorphous carbon and that its bottom part is fitted with electrifying electrodes and has therebetween a heating area to be heated by resistance heating due to its electrification. The same shaping mold from its dipping step through the inspecting step of inspecting the shaped article as adhered to the surface of the mold. In the heat-drying step of the method, the shaped article as adhered to the surface of the shaping mold is heated and dried from the inside of the mold with preventing as much as possible formation of pin holes in the shaped article.

Abstract: A mold 11 having an inner surface coated with a heat insulating film 14 excellent in heat insulation and conformability to a molten resin 20 is clamped with the other mold 12 to form a molding cavity 13. When the molten resin 20 is cooled and solidified in the cavity 13, heat transmission through the mold 11 is suppressed by the film 14 so that a skin layer 23 preferentially grows at the side of the mold 12. Hence, the volumetric shrinkage of the resin 20 during cooling and solidification is selectively absorbed in the deformation of the skin layer 23 separated from the inner surface of the mold 12. As a result, an obtained product has a smooth front surface free from defects such as sink marks. The heat insulating film 14 exhibits the effect to eliminate weld lines, too.

Abstract: The present invention relates to a decorative mold having an uneven pattern for forming a concrete surface with an uneven pattern by transfer. The present decorative mold is made of a molded product of polypropylene type foamed particles having a density of 0.02 to 0.06 g/cm.sup.3 and is formed with an uneven pattern on one surface for forming a pattern on a concrete surface by transfer, and in the surface having the uneven pattern for transfer, the total area, in terms of projected plane, of gap sections present in all the projected plane of the decorative mold accounts for less than 0.5% of all the area, in terms of projected plane, of the decorative mold. The maximum bending strength of the decorative mold determined by pressing from the undersurface opposite to the side having the uneven pattern is preferably 8.0 kgf/cm.sup.2 or more, and the average particle diameter of the polypropylene type resin foamed particles that are a raw material constituting the decorative mold is preferably 1 to 4 mm.

Abstract: A metal mould for making a frozen confectionery product is made of a titanium-containing materials, the mould being produced by cold-working a sheet-formed blank, either by deep-drawing or by pressing two half shells which are subsequently welded together. By using titanium for the ice lolly moulds, it is possible to avoid the use of poisonous inhibitors, without any risk of corrosion on the moulds. There is a considerable risk of corrosion on the moulds as the moulds used in the production of frozen confectionery products are subjected to freezing baths with strong saline solutions. When using titanium material for making the metal moulds, it is further possible to perform stress-relieving annealing at a lower temperature than was formerly possible when the moulds were made of stainless steel.

Abstract: A mold in accordance with the present invention can be formed by a method which utilizes a fiber reinforced pre-ceramic resin composite which is cured and fired to form a Continuous Fiber Ceramic Composite (CFCC), or alternatively by use of a pre-ceramic matrix composite, which is cured, but not fired into a ceramic state.

Abstract: An integrally molded concrete molding form member is made of a fiber-reinforced plastic and formed of a long flat front plate portion, a pair of horizontal side plate portions perpendicularly extending from cross-sectional ends of the front plate portion toward its back surface, and a horizontal pair of rear plate portions perpendicularly inwardly extending from forward ends of the side plate portions opposed to the back surface of the front plate portion. Each of the front plate portion, the side plate portions and the rear plate portions is provided with a plurality of mounting holes in the same longitudinal positions at prescribed intervals to facilitate connecting front, side, back, upper and lower surfaces.

Abstract: A muffin tray made from modified crystalline polyethylene terephthalate has a plurality of baking wells with heat-transfer inhibiting bottoms, and protruding circumferential ridges to accommodate differential thermal expansion while limiting related distortion. The muffin tray is used in a baking process having a baking step using a spiral oven with a water bath therein. Hot air is directed into close surface contact with the water pool and then into cross-flow relationship with the muffin trays to effect baking of muffin batter.

Abstract: An improved method for forming plastic molds for casting articles having an optical surface such as contact lenses employs a plastic tool having an optically smooth surface.

Abstract: Ophthalmic lens manufacturing equipment includes lens die assemblies constructed to accommodate fragile, high quality glass lens dies. The lens die supports of the assemblies provide a series of grooves of critically small widths on their interface surfaces to apply vacuum pressure from an external source to the backs of the lens dies and thereby hold them in place. The vacuum securement also enables rapid lens die changeover using robotic arms.

Abstract: A domed container for the preparation and display of food includes a receptacle, a dome cover, and a hollow mold member. The receptacle has a bottom with a top surface and an outer circumference. The bottom possesses at least one groove in a closed, continuous pattern. The groove has two side surfaces and a bottom surface, and each side surface is configured to include projections extending into the groove. The dome cover includes a top wall having at least one wall depending therefrom. The depending wall has an outside surface and an inside surface. The container possesses a locking structure for releasably locking the cover to the receptacle. The hollow mold member, which forms a closed continuous pattern, has a lower edge that fits into the groove of the receptacle and is held in place from each side by an interference fit between the projections of the side surfaces of the groove and the lower edge, thereby removably attaching the hollow mold member perpendicularly to the receptacle.

Abstract: A two-part reusable mask to protect objects to be plated. The mask can be used for painting, chemical treatment or other treatments. By adjusting the shape of the mask, any object can be plated. In the case of coins or medallions, a two sided mask is formed. For use with coins, the coin is laid on a piece of glass. A dam is formed around the coin. A quantity of ultraviolet-sensitive liquid polymer is poured on and around the coin. The dam is covered with another piece of glass and the mold is clamped and cured. The mold is removed and an exact copy of the coin is left in the rubber. The rubber mask is then placed on a hard surface and the areas to be plated are cut out. After the mask is cut out, it is placed back over the coin and aligned. A piece of clear, hard plastic is bonded to the rubber using a clear adhesive. After the glue is cured, the plastic is cut out to match the corresponding pattern cut in the rubber. The mask is then ready to use.

Abstract: A molded proofer tray (10) for use in commercial bakeries, includes threaded inserts (28) molded directly into the outer end (14) walls for removably receiving mounting pins (30) to facilitate repair if damaged. A female embodiment (40) is also provided.

Abstract: Disclosed are mold halves useful in molding a contact lens by polymerization of a polymerizable composition disposed between the mold halves. The mold halves are of rigid thermoplastic, preferably polystyrene, transparent to ultraviolet light.

Abstract: A ring-cake preparation system is adapted for use in association with a ring-cake and a ring-cake container. The ring cake container is formed in a cylindrical configuration. A plate with a post is positioned within the cake container. The apparatus includes at least one disc formed in a planar circular configuration with a circular aperture at its approximate center point. The diameter of each circular aperture measures between about eighteen and twenty percent of the diameter of each disc. Each circular aperture is adapted to permit the passage of the post of a ring cake container. At least one rim is formed in a cylindrical configuration and is positioned around the periphery of each disc. The rim is positioned in a perpendicular orientation with respect to the plane of the disc. The width of the rim measures between eight and twelve percent of the diameter of the disc. The disc intersects the rim at its approximate center point.

Abstract: A method and mold for making a wheel of a roller skate including a plurality of circumferentially spaced apart generally axially extending curvilinear paths. A speed skater, traveling a predominately circular course with such wheels properly aligned on such skates, is able to use air moving past the skater to increase skating speed. As air enters the curvilinear paths of the wheel the direction of air flow changes. In this manner, momentum is transferred from the moving air to the spinning wheels, thus increasing the number of revolutions of the wheel and the speed of the skater. The mold may be formed of polyurethane and use flexible fingers to form the curvilinear paths of the wheel.

Abstract: A mold for pressure-cast-molding a ceramic article having a filter material made of an open-cell porous material. The open-cell porous material is prepared by stirring a mixture of a resin material, a microballoon, a curing agent and water to provide an emulsion slurry, casting the slurry in a water-impermeable mold and curing the slurry in the water-containing state. The portions occupied by the water during the preparation of the porous material mainly form open pores.

Abstract: A fiberglass or other material skin is applied to a composite airfoil structure in a mold assembly having a partially compliant caul plate component which defines the shape of the lower surface of the airfoil. The caul plate component includes a first portion which is essentially rigid and which covers the leading edge of the airfoil. The rigid portion of the caul plate component provides improved conformation of the airfoil skin to the leading edge of the airfoil. The caul plate component also includes a compliant portion which covers and defines the shape of the trailing edge of the lower surface of the airfoil. The stiffness of the caul plate component also has a variable stiffness zone which interconnects the rigid and compliant portions thereof.

Abstract: A molded article is prepared by forming a glass core, treating the glass core to induce residual stresses therein, inserting the core into a mold, injecting resin into the mold, curing the resin, fracturing the core to produce glass particles, and removing the glass particles from the molded article.

Abstract: An apparatus for molding experimental, prototype and replacement parts from rubber materials. The apparatus consists of a mold having walls made from layers of fiberglass cloth and laminating resin reinforced with a mixture of quartz sand and laminating resin; a frangible cellular core made of a two component system polyurethane foam core and a hard outer coating of a quick set resin; a wax; and a release agent. The frangible core is formed by coating the surfaces of a core forming cavity of a core box with the wax to fill in irregularities; buffing the wax coating to provide a smooth finish; applying the release agent over the wax; coating the release agent with the hard quick set resin; and filling the core forming cavity with the two component system polyurethane foam. The frangible core is inserted in the mold, a rubber polymer is injected into the mold and the frangible core is removed from the part by breaking the core into small pieces after the part is removed from the mold.

Abstract: There is provided a reproducible molding die comprising a base structure having an unevenness pattern, and a cleaning layer disposed on the surface of the base structure having the unevenness pattern, wherein the cleaning layer is removable while substantially retaining the unevenness pattern of the base structure. By using above-mentioned molding die, a possible molding residue left in a molding step can easily be removed together with the cleaning layer.

Abstract: A tool for fabricating fiber reinforced resin matrix composite structures having molded outside surfaces with intermittent molded inside surfaces e.g. aircraft skin with internal stiffeners. The tool employs a hybrid vacuum bag with soft portions in combination with rigid portions to produce the internal stiffeners. The stiffeners are supported and shaped during curing by pressurized elastomeric tubes, in lieu of mandrels, which can be easily removed when collapsed. The stiffeners and skin can be made from wet lay-ups or prepregs, formed in place or preformed, and in combinations where one part is precured or both parts are co-cured.

Abstract: A module, such as a terminal block (10), configured of a body (12) having an open end (20) and at least one window (24) spaced from the open end, is fixtured and sealed by way of a channel (28) comprised of a pair of parallel, spaced-apart, generally elastic walls (30,32) jointed by a bottom member (34). The walls (30,32) and the bottom member (34) run longitudinally a distance at least as long as the width of the terminal block (10) to allow the block to be received between, and to be held by, the walls. At least one protrusion extends out from a separate one of the walls (30,32) and the base member (34) for receipt in the window (24) in the terminal block to seal the same.

Abstract: A mold assembly includes first and second mold sections having respective first and second mold cavity defining surfaces, the first mold cavity defining surface terminating in an encircling peripheral rim and the second mold cavity defining surface terminating in a deformable peripheral annulus disposed at a diameter corresponding to the rim, and cooperating tapers depending from each of the first and second molds for relatively centering the molds.

Abstract: An insulated mold insert is provided for injection molding compact disks and optical disks. The mold insert is removably located in the mold cavity behind the stamper. The mold insert has an insulation layer retaining heat at the molding surface, thereby increasing surface smoothness of the molded part. The insert may have a metal surface for contacting the back side of the stamper.

Abstract: A porous mold for manufacturing ceramics comprises a porous mold body including a mold central portion and a mold outer peripheral portion and having mold surface of a shape corresponding to an outer shape of a suspension insulator and other similar ceramics to be manufactured having a small diameter hollow cylindrical central core portion with a closed head portion and a large diameter shed portion extended from the core portion in a radial direction, wherein water absorption percentage of a mold surface side portion of the mold outer peripheral portion is larger than that of the mold central portion. The water absorption percentage of the mold surface side portion of the mold outer peripheral is 20-30%, and that of a mold head portion of the mold central portion is 10-20%. A difference of the water absorption percentage between the mold surface side portion of the mold outer peripheral portion and the mold head portion is 5-20%.

Abstract: A plastic-model kit having a plurality of components containing at least one die sheet for molding having cavities therein and at least one thermoplastic resin having a low softening temperature, the die sheet and the thermoplastic resin being packed together in a unitary package. The thermoplastic resin can be softened, by dipping in hot water, for example, at about 60.degree. C. to 80.degree. C., and the softened resin can be cast by hand or by a simple tool into the cavities on or through the molding die sheet and then cooled at ordinary temperature (that is, 20.degree. C. to 30.degree. C.) to form various shaped and sized pieces for the plastic-model kit. Ornaments or decorations having a three-dimensional or roughly three-dimensional visuality such as for dolls, human models, animal models, building models, ship models, car models, airplane models, and the like can be assembled from the plastic-model kit.

Abstract: The present invention is directed to reusable molds which are used to mold various pieces including a modular contained machine foundation unit. Most pieces are molded as a hollow form which surrounds vertically extending reinforcement rods and is filled with a fortifying material to secure the hollow form to a slab. The hollow form is preferably made of an aggregate filled thermosetting resin which is a corrosion and chemical resistant material.

Abstract: Latex foam molded articles are prepared using a plastic mold heated by means of microwave energy. The molded article can be readily released from the mold. The mold has good dimensional accuracy and a long serviceable lifetime. The walls of the mold are composed of a molding composition which has the following constituents:a) 20 to 100 parts by weight of polyphenylene ether,b) 0 to 30 parts by weight of styrene polymers,c) 0 to 30 parts by weight of impact-modifying additives,d) 0 to 40 parts by weight of reinforcing agents and/or fillers ande) 0 to 15 parts by weight of additives.The mold surface is passivated. Compared with conventional processes for the production of latex foam molded articles, the cycle time and the energy consumption are considerably reduced when this mold is used.

Abstract: There is provided an ice tray that includes a body and a laminated cover that has a plastic coat for securing together the body and the cover. The body includes a plurality of individual cavities for receiving liquid therein. Each wall of each cavity has an upper edge that forms a lip. The cover is sealed along each lip of each cavity to provide a liquid tight seal for each cavity. The body and cover are each, preferably, formed of a single sheet of material. The body is made of pure polyvinyl chloride plastic, and the cover is made of a laminate of polyester and polyamide with adhesive therebetween and the plastic coat on the side of the polyester opposite the adhesive.

Abstract: A multilayered insulated mold structure for forming textured articles is disclosed. An insulation layer is deposited on the mold core and a multilayered skin layer is deposited on the insulation layer. The skin is formed of a plurality of sublayers, including a corrosion-resistant phosphorous-rich nickel region on the insulation layer acting as an etchant stop, and an non-corrosion resistant, or etchable, phosphorous-poor nickel region on the corrosion-resistant layer. The upper layer is uniformly textured by selective etching down to a depth terminating at the interface between the layers, but the insulation layer is protected. A method of molding uniformly textured articles is also disclosed, as is a method of making a mold suitable for producing uniformly textured articles and a method for making such a mold surface having bulk imperfections.

Abstract: A form liner, for use in forming a wall having a natural stone wall contour from hardenable construction material, includes a first non-linear mating edge and a lateral relief mode face. The lateral relief mode face includes a plurality of interlocking contoured relief portions adapted to provide the natural stone wall contour. The interlocking contoured relief portions include first portions for forming interlocking contoured mortar regions and second portions for forming non-planar stone regions. A plurality of liners may be mounted adjacent one another to form a gang form liner wherein the non-linear mating edges of adjacent form liners are mated to form a continuous molding surface.

Abstract: This invention relates to the use of a flexible, heat resistant mold member. The mold member is useful in molding processes such as dip or slush molding. The mold member maintains its structural integrity and may therefore be used as an insert in the article being molded to provide flexible stability at specific locations within the article. The mold member is made of a material which is substantially non-reactive with the molded article. The molded article may be any article made from a plastisol such as a binaural for a stethoscope having single or double lumens.

Abstract: A mould assembly for the manufacture of at least one plaster piece includes at least two parts, one being a support member (21) and the other being a mould member (22), the support member being formed of lightweight rigid material with a lower base surface (23) and at least one upwardly open cavity (24), and the mould member being formed of "rigid" film material having at least one depression (26) to depend into the cavity from at least one integral planar flange portion (27) parallel to the base surface of the support member, the inside (28) of the depression being impressed with mould detail for the plaster piece, and space (29) being afforded between the base surface (23) of the support member (21) and the flange portion (27) of the mould member (22) for accommodating at least dry plaster material for use in moulding the plaster piece.

Abstract: It has been conventionally considered difficult to adhere a mold metal and a polyimide, etc. whose coefficients of thermal expansion differ from each other by one figure and to retain the adhesion in injection molding, etc. involving severe heating-cooling cycles over several tens of thousands of times. The greatest merit of injection molding resides in that a molded article of complicated shape can be obtained through one shot. It has been demanded to obtain a mirror-smooth injection molded article with good molding surface reproduction without extending the mold-cooling time while retaining this merit. The present invention provides a mold satisfying both of the durability and the demand. The present invention relates to a mold for synthetic resin molding comprising a mold body made of a metal having a heat conductivity of not less than 0.05 cal/cm.multidot.sec.multidot..degree.C.

Abstract: A mold for molding an industrial product from a powder by slip casting, which has good water-absorptivity, long life, high strength and excellent mold-releasability and is constituted from a composite base material of boron nitride and other ceramic constituents. With this mold, molding of ceramic products and the like can be performed with high efficiency without causing clogging.

Abstract: An elastomeric member is incorporated between a conductor and a conductive interconnection bridge. This elastomeric member serves as a spring providing compliance to an interconnection so that the flatness requirements of an opposing mating structure may be relaxed. A flat metal mandrel is provided with an elongated curved depression extending across a predetermined region where a resilient interconnection bridge is to be located. A nonconductive layer of Teflon is bonded to the surface of the mandrel. Grooves are ablated in a predetermined configuration down to the conductive surface of the mandrel using an excimer laser and a computer-controlled x-y table. Fineline electrical circuits are electrodeposited into the ablated grooves. The elongated curved depression is filled with a silicone material. The silicone material is permitted to cure to form a compliant elastomeric member having the shape of the elongated curved depression.

Abstract: An elastic molding die is composed of an elastomer laminate film, of which the innermost layer is formed of an elastomer not containing fillers. The innermost layer elastomer is preferably an oil-resistant elastomer. Alternatively, an oil-repellent agent may be contained in the innermost layer elastomer. The outer layer may be formed of an elastomer containing fillers. Furthermore, an oil blocking layer can be provided between the inner layer and the outer layer. A master model is dipped in an elastomer solution not containing fillers, heat dried to form a gelled elastomer film, the film is coated with a coagulant, dipped again in an elastomer solution, taken out, gelation treated, and the elastomer film is peeled from the master model to obtain an elastic molding die. In another method, a once-formed hollow elastic molding die is turned inside out, pressed in with a gas to swell, the swollen die is coated with an elastomer solution not containing fillers, heat dried, and turned it again inside out.

Abstract: A lightweight concrete forming tube is disclosed, and wherein the tube has a very thin wall of wound paper layers which permit the tube to be collapsed and wound into a reel to facilitate shipment and storage. In use, the desired length is severed from the reel, and the severed length is opened and positioned about a vertically disposed steel reinforcing structure. Concrete is then poured into the opened tube, and the hydrostatic pressure of the liquid concrete causes the tube to assume a circular cross-section and straight vertical configuration. Upon hardening of the concrete, the tube is severed with a knife and removed, leaving a formed concrete column of circular and straight configuration.

Abstract: The present invention relates to spraying of high viscosity silicone molding compositions and to cured silicone molds or tools formed by that process that allow for near perfect transfer of detail from a surface to a molded object.

Abstract: Concrete forms utilizing a laminated concrete form liner including a porous fabric laminated to a drainage scrim. The laminated form liner is untensioned and used in combination with a support to form a concrete casting system wherein the porous fabric side of the laminated form liner is placed directly in contact with the concrete. The drainage scrim enhances the ability of the form liner to remove excess water from the surface of the concrete.

Abstract: A mandrel for manufacturing a hollow composite material body. The mandrel is formed by a homogeneous graphite felt block whose fibers are embedded in a pyrolysis carbon matrix. The densification of the arrangement of fibers forming the hollow body is carried out in a neutral atmosphere.

Abstract: UV-transparent forming tools or molds are prepared for molding resins comprising a urethane acrylate, e.g. urethane dimethacrylate oligomer, and an alpha,beta-ethylenically unsaturated monomer, e.g., styrene, cured in the presence of a peroxide initiator. The resins are tough, durable and have a wide range of other desirable properties.

Abstract: A mold for an organic polymer, ophthalmic lens element has separate upper and lower mold members with each mold member being composed of a thermoplastic polymer. The lower mold member has a central, bowl-shaped cavity with contours that conform to those of a lens to be molded therein, and has an annular rim surrounding the upper edge of the cavity. The upper member has a central portion with an under surface that corresponds in contour to that of the upper surface of the lens to be molded, and has an annular rim that surrounds the central portion and rests on the annular rim of the lower member when the two members are assembled.

Abstract: A contact lens casting mould includes two casting mould halves. A concave shaping surface (11) is constructed on a female part (1) and a convex shaping surface (21) on a male part (2). When joined together, the two casting mould halves (1 and 2) adhere by frictional connection.

Abstract: The present invention is directed to a reuseable mold for casting a hollow form made of an aggregate filled thermosetting resin. The reuseable mold includes an outer mold, made from sheets of thermoplastic resin, and an inner mold, also made from sheets of thermoplastic resin, having a base with plugable opening(s) for connecting an air supply for popping the inner mold from the cast hollow form fabricated in the reuseable mold. The sheets are preferably 1" sheets of polyethylene.

Abstract: In a casting mold, refractory filled segments are provided between adjacent riser seats to provide more uniform and more controlled cooling of the molten metal to reduce microporosity in the cast product.

Abstract: A mold element comprised of metallic pellets and a bonding agent to bond together the metallic pellets. The metallic pellets can be a mixture of ferrous shot and ferrous grit and the bonding agent can be a solvent or a resin. An associated method is also provided.

Abstract: General purpose equipment is provided for supporting bread making products or similar during the process of fermentation and baking of the dough, including as basic unit elements: a tray with side flanges (1), one or more replaceable and interchangeable non stick membranes or molds, perforated, or not, each preformed to the dimensions and shapes of a bread, Viennese bread or pastry piece or pieces to be baked, each of these interchangeable membranes or molds resting, on the tray without being fixed or at least while remaining removable.