Abstract: Multiple layered plastic sheets is produced by sequentially disposing at least two powdered flowable materials onto a melted layer of plastic being conveyed in a given direction. Each material corresponds to a separate layer of the resulting multilayer sheet.

Abstract: A filler material for filling an outlet aperture of a casting ladle or similar container, comprising a particulate core principally composed of quartz and a coating layer which covers a surface of the core, the coating layer having a multiplicity of fine particles principally made of at least one material selected from materials of feldspar group can be surely taken off from the outlet aperture of a casting ladle or other similar container to allow substantially complete opening of the aperture when the slide gate is opened.

Abstract: A method of and an apparatus for supplying a powdery material to a workpiece to be processed thereby. According to the method, the powdery material is discharged from a hopper and metered, and then fed into a tube extending in the vicinity of the workpiece. Ultrasonic vibrations are imparted to the tube to supply the powdery material to a portion to be processed of the workpiece while the amount of the supplied powdery material is being detected. The apparatus includes a hopper for storing the powdery material, the hopper having an outlet, a tube extending from the outlet to a position adjacent to the workpiece for conveying the powdery material therethrough, and an ultrasonic vibrating device mounted on the tube for imparting ultrasonic vibrations to the tube, and a device mounted on the tube for detecting the amount of the powdery material supplied through the tube.

Abstract: A light-sensitive printing plate precursor is described comprising a support having provided thereon a light-sensitive layer, said light-sensitive layer having spray-coated and dried thereon an aqueous liquid containing a resin in a dissolved or dispersed state.

Abstract: A metal brazing sleeve includes a ceramic flux band formed on the sleeve adjacent an annular recess typically disposed near an open end of the sleeve for receiving a conventional braze preform, by adhering a powder flux to the sleeve by a tacky adhesive and then melting the powder flux in place, by internal heating of the tube. The ceramic flux band is hard and adherent, and resistant to abrasion effects during insertion of the sleeve into a tube, and provides a shadow effect for protecting an optional cemented powder flux band which may be formed on the braze ring.

Abstract: A method for coating a surface comprises providing an electrostatically charged powder, irradiating the powder with energy until the powder or the surface melts, and allowing the surface to solidify.

Abstract: A gasket made of compressed expanded graphite particles bonded to an apertured reinforcement plate whose apertures are bridged by a relatively narrow area, as in a cylinder head gasket, is made by pressing the graphite particles onto the face of the plate without transverse support of those particles at the periphery of the plate apertures, by pressing between two compressor belts.

Abstract: A ceramic shaped body having an improved mechanical strength which is useful for a structural material, such as engine parts, is produced by coating a slip which is substantially the same in the chemical composition as the ceramic shaped body and is very small in the difference of the thermal expansion coefficient at 800.degree. C. from the shaped body, on the surface of the shaped body, drying the coated shaped body, subjecting the thus treated shaped body to a hydrostatic press and firing such a shaped body.

Abstract: A coil comprising a carbon filament winding with fused particulate insulative coating therearound and method of producing such carbon filament coil.

Abstract: A method of repairing breaks in plastic sheet members such as those used on dashes of automobiles. The abutting edges of the crack formed at the break are coated with a liquid cyanoacrylate adhesive. The crack is filled with a particulate material, preferably hardened polyurethane foam or graphite which has been ground to a particle size corresponding roughly to that of common table salt. The particulate filler is soaked with the liquid cyanoacrylate adhesive and the liquid is then dried. For cracks of substantial depths, several layers of filler soaked with the adhesive may be utilized to completely fill the crack. After the filler composition has completely hardened and the repair smoothed by sanding, the immediate zone may be textured by spraying with a liquid vinyl lacquer. When the lacquer is dry, the region may be painted to blend with the remainder of the member.

Abstract: A method of manufacturing a thin layer detector for integrating solid state dosimeters, in particular for thermoluminescence dosimeters (TLD's), from thermoluminescent powder material, comprising the simultaneous application of high pressure and elevated temperature to the powder layer at selected values (working point) sufficient to cause physico-chemical bonding of the layer with a suitably prepared substrate by plastic flow of the powder grains.

Abstract: Relatively small parts are powder coated without fixturing by placing the parts on a heat conductive surface and the powders are distributed over the exposed surfaces of the parts. The powders on the surfaces of the parts are heated to fuse the powders, as by radiant heat, while the heat conductive surface is kept at a temperature below that at which overspray powders on the conductive surface will become tacky. In a preferred embodiment, the heat conductive surface is an endless belt which advances the parts past a powder coating station, past a top heating-bottom cooling station and then to discharge.

Abstract: The emission of formaldehyde from particle board bound with carbamide resin is reduced by coating the boards, during their manufacture and subsequent to pressing the same, with at least one ammonium compound which decomposes thermally at the temperature of the boards during the conditioning period, whereafter the boards are stacked and stored for conditioning.

Abstract: A protective sheet for a cassette holding a magnetic recording tape comprises a transparent base which is coated with a hardened surface layer formed by bonding hard fine particles with a binder.

Abstract: Ethylene/vinyl acetate copolymer film containing 35 to 50 percent copolymerized vinyl acetate by weight is irradiated with 0.5 to 16 megarads of high energy radiation, contacted with an alcoholic solution of a titanate or silane coupling agent, and subsequently contacted with an alcoholic finely divided mineral particulate slurry. The resulting film is elastomeric, heat sealable, transparent upon relaxation after being stretched and free of surface tack.

Abstract: The invention is a process for the manufacture of substantially pore-free shaped articles from polycrystalline material, such as tungsten carbide, silicon nitride, titanium boride or silicon carbide, in which encased articles preformed from pulverulent materials and having open pores are isostatically hot-pressed in a vacuum-sealed casing of vitreous or ceramic-like material in a high-pressure autoclave using an inert gas as pressure-transfer medium. Before the application of the casing material, a first layer comprising material that can be decomposed or melted, such as an organic wax or a resin-like product, or of a compressible heat-resistant material such as inorganic fibers or felts, is applied to the preformed articles. Then, the encased articles are thermally treated until the glass or ceramic layer is fused or sintered gas-tight. The articles pretreated in this manner are then isostatically hot-pressed.

Abstract: A paint composition comprising a powder paint uniformly dispersed in an aqueous solution of a water soluble carboxylated resin. Use is made of a powder paint having a mean particle size of 1-100 microns and preferably comprising a thermosetting resin as the vehicle. This paint composition contains no surfactant but, nevertheless, features high stability of the dispersion phase and can provide paint films of excellent resistance to water. This paint composition may utilize recovered waste powder paint, i.e. a mixture of differently colored powder paints, preferably with the addition of a black pigment such as carbon black.

Abstract: An enameled steel plate is disclosed having a linear thermal coefficient of expansion at a temperature between 30.degree. C. and 500.degree. C. within the range of from 100.times.10.sup.-7 to 190.times.10.sup.-7 /.degree. C. and covered with phosphate glass or crystallized glass consisting essentially of from 40 to 75 mol % component X, from 20 to 55 mol % component Y, and from 0.1 to 10 mol % component Z, whereinComponent X is P.sub.2 O.sub.5 ;Component Y is selected from ZnO, K.sub.2 O, B.sub.2 O.sub.3 and Al.sub.2 O.sub.3 in an amount of up to 20 mol % and CaO and BaO in an amount of up to 55 mol %; andComponent Z is selected from SrO, Ta.sub.2 O.sub.5, La.sub.2 O.sub.3, CeO.sub.2, and Nb.sub.2 O.sub.5.The product has improved water resistance and chemical durability especially in high temperature and high humidity environment, and therefore, is suitable for use in thick film hybrid integrated circuits employed in automobiles.

Abstract: A method of cladding a wire with a powdered metal includes feeding the wire in its axial direction, applying powdered metal around its surface, compacting the applied powdered layer on the surface and subsequently continuously rolling-over the applied layer on a helical path to provide a helical zone of metallurgically bonded powdered material. The device of this invention has a storage container for powdered material, a rotary shaft defining at its center a forwardly tapering passage with an internal thread acting as a worm conveyor, the shaft being terminated with an exchangeable outlet nozzle, the nozzle supporting a set of cladding rollers, the axes of rotation of which are inclined at an acute angle to the axis of the passage. The driving arrangement for the rollers is preferably driven by a separate motor.

Abstract: There is provided a process for preparing a photosensitive plate for printing which comprises providing a heat-depositable fine powder having a constant directional size of 0.5-40.mu. onto the surface of a photosensitive plate for printing at a ratio of 0.005-0.5 g. of the said powder per m.sup.2 of the said plate to uniformly disperse and adhere the said powder onto the said surface, while preheating the right side (side on which powder adheres) and/or the reverse side of the said plate upon providing said powder or before or after providing, and subsequently contacting the right side of the said plate with a heating roll having a high releasing surface, whereby the said fine powder is fused and fixed on onto the surface of the said plate.

Abstract: There is provided a process for the production of a photosensitive plate for printing which comprises providing a given amount of a fine powder having a constant directional size of 0.5-40 .mu. from a dust supplier directly or via a distributor to a cyclone, feeding the said powder together with a small volume of air from the bottom of said cyclone, uniformly dispersing and adhering the so flowed fine powder onto the surface of a continuously running photosensitive plate for printing.

Abstract: A powder composition having good melt flow under zero shear conditions is disclosed. A process for preparing this powder composition is also disclosed. The composition comprises a thermoplastic elastomer such as a block copolymer of styrene and hydrogenated butadiene as well as a melt flow modifier. The melt flow modifier is preferably a partially hydrogenated styrene/alpha methylstyrene random copolymer. The composition may additionally contain adhesion promoters and stabilizers against oxidation and ultraviolet light. A process for coating substrates such as a glass bottle with this composition, as well as the coated glass bottle, is also disclosed.

Abstract: A layer of a liquid composition containing an epoxide resin as the sole photopolymerizable component, a heat-activated curing agent for epoxide resins, and preferably a photopolymerization catalyst, is exposed to actinic radiation until the layer solidifies to form an essentially solid, continuous film due to photopolymerization of the epoxide resin through epoxide groups, the resin remaining, however, still thermosettable by virtue of residual epoxide groups. The film so formed is contacted with fibrous reinforcing material and caused to flow about the fibers, suitably by applying heat and pressure, to form a prepreg. When desired, e.g., after the prepreg has been formed into some desired configuration or layers of prepreg have been stacked, the assembly may be cured by further heating.

Abstract: Solid constant release composition wherein (a) the solution of soluble core substance within the core space remains saturated during dissolution and (b) the shape and (c) the surface of the coating and (d) the diffusion path for the soluble core substance through the porous coating remains constant while the composition is in a liquid medium, which composition is very useful in media in which constant release during substantially the whole release period is desired, for example, for medical, chemical and fermentation purposes.

Abstract: Steel pipe is provided with protective coating by first applying a corrosion protective coating such as fused powdered epoxy resin or heat activated adhesive or butyl-based pressure-sensitive adhesive adhered to the pipe, then extruding or coextruding an outer polyolefin layer directly onto the corrosion protective coating. The coextrusion step may include an outer layer of high density polyethylene and an inner adherent layer of low density polyethylene, or an outer layer of polyethylene or polypropylene and an inner layer of a copolymer of ethylene or propylene and acrylic acid.

Abstract: This disclosure relates to a lubricant comprised of a mixture of a binder and a lubricating agent in a certain predetermined ratio. The binder is a wax type material having a melting point below the surface onto which the lubricant is applied and the lubricating agent is selected from a group consisting of talc, mica, whiting or Kaolin (China Clay).This lubricant is specifically designed to be applied to a relatively hot surface during a manufacturing operation so that the binder melts to form a film on the surface with the lubricating agent trapped or encapsulated within the film. The binder solidifies on cooling and the film then acts as a lubricant on the surface of the product in its later manufacturing operations and is of such a nature that it does not interfere with the final properties of the product.

Abstract: A coated bottle comprising a bottle having an inner and an outer coating is disclosed. The inner coating applied to the external surface thereof is prepared from non-tacky composite powder particles which are made up of powder particles which have surface deposited thereon comparatively smaller solid particles which are hard and non-tacky. The tacky powder particles comprise a mixture of a thermoplatic elastomer, a specifically defined melt flow modifier, and an adhesion promoter. The smaller, hard particles comprise a specifically defined melt flow modifier which has a glass transition temperature of at least about 20.degree. C. The first coating is applied to the bottle, preferably by electrostatic spraying techniques, and the bottle with the particles is baked to form a smooth coating. An outer coating comprising certain particularly defined synthetic resins, particularly acrylic polymers, is then applied and the coated bottle is again baked until a smooth second coat is formed.

Abstract: Disclosed is a method and apparatus for forming hollow and cylindrical ingots of amorphous or fused silica and other ingot materials. The ingot is formed from a melt on a deposition surface which is lowered as the ingot is formed at a rate which maintains a constant distance between the deposition surface and a heat source vertically positioned above same. The melt is shaped into a vertical cylinder by at least one forming tool which is a roller member rotatable about a vertical axis. In a preferred embodiment the fixed distance from the heat source is maintained with the aid of the laser beam.

Abstract: A method of fixing a toner powder image on a sheet of material. A substantially flat impact surface is provided, and the side of a sheet opposite to the side carrying a freshly applied toner powder image is placed into contact with the flat impact surface. The surface of the sheet of material carrying the toner powder image is impacted by a plurality of pellets, each of which has an impacting area which is substantially smaller than the area of the surface of the sheet of material carrying the toner powder image. The pellets are preferably repeatedly impacted against the sheet of material and in a random manner to achieve pressure fixing of the entire surface of the sheet of material.

Abstract: A glass decorating color is applied to a glass article but is not bonded permanently to the glass. A finely divided heat settable plastic material is applied to the article over the impermanently bonded color and onto glass surface areas beyond the area covered by the color. Heat setting of the plastic material, even though insufficient to permanetly bond the color itself to the glass, forms a smooth plastic film over the decoration and fixes the color with respect to the glass surface.

Abstract: Solids such as char, ash, and refractory organic compounds are removed from coal-derived liquids from coal liquefaction processes by the pressure precoat filtration method using particles of 85-350 mesh material selected from the group of bituminous coal, anthracite coal, lignite, and devolatilized coals as precoat materials and as body feed to the unfiltered coal-derived liquid.

Abstract: A method for producing a tubular multi-layered porous barrier comprising the step of depositing fine powder onto at least one of the inner and outer surfaces of a sintered tubular porous support member in a layer of uniform thickness to form a fine powder layer and pressurizing said powder layer against said support member to form a porous barrier layer on the support member.

Abstract: Process for pre-strengthening a non-woven textile fibre fleece obtained by the wet process wherein a heat-sensitive latex mixture whose coagulation point does not substantially change on dilution is applied in a finely divided form to the surface of the wet fleece and the fleece is then heated to a temperature at which the latex mixture coagulates to form a gel-like film.

Abstract: Calcium silicate monohydrate (2CaO.sup.. SiO.sub.2.sup.. H.sub.2 O) can be produced in a coating which has been formed by a coating material containing silica sol alone or silica sol and other additives such as aggregate, viscosity increasing agent, etc. by subjecting the coating to a chemical treatment such as heat-treatment, ultra-violet ray irradiation treatment, etc. in the presence of water and a calcium compound which may be present either in the coating material, or in the treating liquid, or in an object to be coated. The film which contains the calcium silicate monohydrate produced by said chemical treatment has remarkably high hardness and is excellent in water-resistance, water-imperviousness, weather-resistance, and heat-resistance.

Abstract: A thermosetting powder coating composition comprises a low molecular weight cellulose acetate butyrate as the major component, an aminoplast crosslinking agent, a latent acid crosslinking catalyst, and certain poly(alkylene glycols).

Abstract: A composite material comprising substantially uniformly dispersed, tightly packed smooth spheres or spheroids embedded in a matrix with the size of the spheres or spheroids being between 10 and about 50 mesh USA Sieve size and the surface roughness of said spheres or spheroids being between 1 and about 70 microinches R.M.S.

Abstract: A process and structure are described for protecting objects from the damaging effects of electrical discharges by employing a coating of a conductive, ablative material such as graphite. Upon occurrence of an intense electrical discharge to this material, it evaporates to dissipate the heat produced by the discharge and protect the structural integrity of the object.

Abstract: Surfaces of roads, bridges, floors, etc., are easily paved by using a mixture of at least one of granular, powdery and flaky asphalt material and a suitable paving aggregate and applying heat and press thereto at the working site.

Abstract: Disclosed is a method of selectively coating a surface of a porous earthenware article. The article is heated only on the surface to be coated to which is applied powdered coating material. The coated article is post heated above the melting of the coating material but below the pre-heating temperature in order to produce a smooth coating. By heating below the preheating temperature, bubbles are prevented which may have accured because of the porous nature of the earthenware article. Also disclosed is a suction means for preventing coating material from being applied to undesirable portions of the article.

Abstract: Copolymers of (meth)acrylates and .alpha.,.beta.-monoolefinically unsaturated carboxylic acid having 3 to 5 carbon atoms are used as additives for improving levelling, glass and reactivity in powder lacquers. Said powder lacquers contain polymerized units of at least 35% by weight of styrene and (meth)acrylate and 5 to 30% by weight of at least one monomer containing a hydroxyl, carboxyl, glycidyl, N-methylol or N-methylol ether group. The powder lacquer mixture contains 0.1 to 5% by weight of the additive.

Abstract: A fused resin coating is formed on a yarn fabric by impregnating the fabric with a liquid plasticizer for the resin and then coating the impregnated fabric with solid resin powder. The resin-coated fabric then is heated to fuse the resin. The coated fabrics obtained are more flexible and have better strength characteristics than fabrics coated with a resin plastisol composition.