Abstract: A process for coating solid particles in powder form with a material which is solid or of high viscosity at room temperature. A device for carrying out the process comprises a housing (1) with a conical surface (16) and a rotor (7) mounted in the housing and provided with a conical surface (9). The housing has an inlet (20) through which a melt of the solid material can be supplied to a gap between the conical surfaces of the housing and the rotor and an inlet (12) for supplying powder material to the top surface (8a) of the rotor. As the rotor rotates, a film is formed on the conical surface of the housing and at the same time powder is slung, with the aid of vanes (10) on the rotor against the film. The material is worked and pressed out through an outlet (30) by wings (11) on the rotor.

Abstract: A coating method which reduces the nonuniformity of a sprayed coating film at an end portion of a moving workpiece. A spray gun moves along a locus in a direction transverse to a conveying direction of the workpiece. The dimensions of the workpiece and passage of an end portion of the workpiece past the spray gun are detected. A reduced amount of coating material is sprayed at an end portion of the workpiece in response to the determination of passage of the end portion past the spray gun in order to prevent an increase in thickness of the coating film at the end portion. In the case of electrostatic spraying, an increase in film thickness at the end portion can be prevented by reducing or nullifying the electrostatic voltage applied to the end portion of the workpiece.

Abstract: A process for coating powders with ultrafine particles of silicon, silicon oxide, silicon nitride or alloys thereof, entailing:a) introducing a reactant gas into a bed of core powders, thereby uniformly suspending the core powders in the reactant gas,b) entraining the uniformly suspended core powders into a chemical vapor deposition (CVD) reactor,c) selectively forming ultrafine particles of silicon, silicon oxide, silicon nitride or alloys thereof in the gas phase by homogeneous deposition of the reactant gas, while minimizing core powder growth by CVD at surfaces of suspended core powders, andd) coating the core powders with the ultrafine particles of silicon, silicon oxide, silicon nitride or alloys thereof, by introducing hot inert gas into the uniformly suspended core powders in the reactant gas.

Abstract: A cable wrap which swells upon contact with water is made by coating one side of a nonwoven fabric support with a polyvinyl alcohol binding agent and then with a superabsorber powder, drying the coated fabric between contact surfaces, printing a polyacrylate binding agent plaste onto the superabsorber surface, and then drying the coated fabric. Alternatively, the cable wrap can be made by printing a polyacrylate binding agent paste onto a nonwoven fabric support, applying a polyvinyl alcohol binding agent onto the polyacrylate binding agent paste, sprinkling superabsorber powder onto the polyvinyl alcohol binding agent, and drying the coated fabric between contact surfaces.

Abstract: A fluidized coating apparatus wherein a rotatable perforated disk 2 is provided at the lower portion of a processing cylinder 1 and perforated disk opening portions 3 are provided in the vicinity of the outer peripheral edge of this perforated disk 2. The ratio of the total opening area of the perforated disk opening portions 3 to an area of an annular slit 8 formed between the perforated disk 2 and the inner wall of the processing cylinder 1 is within the range from 0.2 to 0.6. Each of the perforated disk opening portions 3 is provided with a cover and side walls so that gas is blown out outwardly in the radial direction or obliquely backward with respect to a rotating direction within 30.degree. to the radial direction of the perforated disk.

Abstract: Apparatus and methods for spray coating selected areas of a circuit board with an insulative coating material without coating regions of the circuit board to be left uncoated. A liquid spray device emits the coating material and an air assist attachment connected to the liquid spray device directs jets of air into impinging relation with the coating material emitted therefrom to transform the coating material into an atomized, shaped spray pattern for coating the selected areas. The air assist attachment can be disabled so that the spray device transforms the coating material into a non-atomized, shaped spray pattern for coating selected areas without coating regions of the circuit board to be left uncoated.

Abstract: A method for preparing electroconductive powders by applying a surface coating comprising amorphous silica, and an electro-conducting network of antimony-containing tin oxide crystallites. The process simultaneously applys silica in association with an antimony-containing tin oxide.

Abstract: An aluminum nitride sintered body that has been fired/formed to have a prescribed sintered configuration, is used as a substrate. A metal paste of tungsten is prepared and applied to the substrate. The metal paste of tungsten contains oxide components of at least 1 percent by weight of the paste and not more than 40 percent by weight of the paste. The oxide components include SiO.sub.2 of at least 1 percent by weight of the oxide components and not more than 40 percent by weight of the oxide components. The oxide components include CaO and Al.sub.2 O.sub.3 in a weight ratio of at least 0.5 and not more than 2 of CaO to Al.sub.2 O.sub.3. The aluminum nitride sintered body coated with the metal paste is heated/fired in a non-oxidizing atmosphere at a temperature of at least 1400.degree. C. and not more than 2000.degree. C.

Abstract: A method for preparing high resolution negative-working wash-off relief images comprising the sequential steps of: (a) providing a non-photosensitive, aqueous processable layer, preferably on a substrate, said layer comprising a dispersion of solvent-coalesceable particles in a polymer matrix; (b) imagewise applying an ink to the non-photosensitive layer to coalesce the particles and form a water-insoluble polymer blend between the particles and the polymer matrix in the ink applied areas; and (c) washing the layer with an aqueous developer solution to remove the non-ink applied areas of the layer.

Abstract: A lacquer coating is applied to a laminated metal composite forming a sliding element such as a plane bearing and has particles of solid lubricants incorporated therein to form islets of greater thicknesses than the surrounding film and which serve as lubricant trapping surface formations.

Abstract: A method and system for significantly increasing the density of particulates on a substrate includes disposing a particulate material, such as fibers or abrasive material, onto a surface of the substrate, whereby the particles adhere to the substrate. The substrate is then exposed to conditions sufficient to cause the surface area, on which the particulate material is disposed, to diminish, thereby significantly increasing the density of the particulate material. The system includes a support on which the substrate is disposed, apparatus for disposing the particulate material in the substrate and apparatus for causing the surface on which the particulate material is disposed to significantly diminish.

Abstract: In a method for the manufacture of a substrate for electrical components, a base of metallic material is first sandblasted and thereafter coated by means of a thermal process with a bonding layer of, for example, copper powder. Then the bonding layer is coated with a dielectric layer of a ceramic material, which also is applied by means of a thermal process, and the ceramic material is thereafter impregnated with silicone oil. Finally, the ceramic layer is provided with an electrical conducting layer, also by means of a thermal process, having a predetermined electrical conducting pattern and the finished substrate is cleaned by blasting it with glass spheres.

Abstract: A process for applying a pattern in a contrasting color to textile articles such as socks consists of entering the textile article onto an expandable article support (29), bringing a perforated pattern (38) over the article on the support, causing the support (29) to expand to press the textile article against the interior of the pattern (38), and applying typically by spraying a coloring agent onto the article through the pattern. The support (29) is subsequently contracted and the pattern (38) and then the textile article which a corresponding design has been printed, removed. Apparatus for applying a single color or multicolor pattern to articles such as socks has a carousel (23) carrying a multiple number of article supports (29). The carousel (23) rotates with a stepped movement between printing stations (54).

Abstract: Use of a mixture of from 5 to 95% by weight of an azidosilane of the formulaN.sub.3 --R.sup.3 --Si--R.sup.1.sub.n (OR.sup.2).sub.3-n Iwhere R.sup.1 is C.sub.1 -C.sub.3 -alkyl, phenyl, benzyl or tolyl, R.sup.2 is C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkoxyalkyl, phenyl or benzyl, R.sup.3 is C.sub.1 -C.sub.8 -alkylene, which may be interrupted by oxygen, sulfur or --(N--R.sup.4)-- in which R.sup.4 is hydrogen, methyl, ethyl or phenyl, and n is 0, 1 or 2, and from 5 to 95% by weight of an aminoalkoxysilane of the formulaH.sub.2 N--R.sup.5 --Si--R.sup.6.sub.m (OR.sup.7).sub.3-m IIwhere R.sup.5 is C.sub.1 -C.sub.6 -alkylene, C.sub.5 -C.sub.6 -cycloalkylene or C.sub.5 -C.sub.6 -arylene, each of which may be additionally substituted by one or two C.sub.1 -C.sub.3 -alkyl groups, and R.sup.6 and R.sup.7, independently of one another, are C.sub.1 -C.sub.6 -alkyl or C.sub.5 -C.sub.6 -cycloalkyl, each of which may likewise be additionally substituted by one or two C.sub.1 -C.sub.

Abstract: A semiconductor processing method provides for plasma-enhanced chemical-vapor deposition (PECVD) for intermetal dielectrics while minimizing risk of gate oxide impairment due to plasma discharge. A protective oxide sublayer is deposited without using high-power PECVD. The protective sublayer can be deposited by using chemical-vapor deposition (CVD) without plasma enhancement or by a lower-power PECVD. In the latter case, the initial rf power of the plasma is selected to be low enough to ensure that the gate oxide is not breached in the event of a plasma discharge. The protective sublayer can be thick enough to maintain its integrity in the event of a plasma discharge even during a higher-power PECVD deposition.

Abstract: A protective and decorative sheet material for covering substrates comprisesa flexible carrier film,a paint layer adhered to one surface of the carrier film containing light reflective flakes;a transparent polymeric topcoat overlying and adhered to the paint layer having a thickness of at least about 0.1 millimeter.The sheet material has a substantially unstressed relaxed state and a relaxed area and is heat softenable to a substantially plastic state in which it is extendable to an extended state having an extended area up to at least 50% greater than the relaxed area. The paint and topcoat layers have substantially uniform quality and appearance in both the relaxed and extended states. The thick transparent topcoat provides improved retention of gloss and distinctness of image when the sheet material is stretched. A method of preparing the sheet material comprises the step of extruding in laminar flow a layer of a crosslinkable transparent topcoat composition over the paint layer.

Abstract: A coating system comprising an epoxy resin prepolymer, a hardener, wherein the hardener comprises a polyamide, and at least three pounds per gallon copper/nickel alloy particles. The coating system is prepared by mixing the components, spraying a thin film onto a surface, and allowing that film to cure. The coating is suitable for use as a marine anti-foulant coating and for other non-marine exterior surfaces.

Abstract: An apparatus used for coating particles has a vessel in which a rotor which can be rotated about a vertical axis and possesses a disk. During coating of particles, the particles rest on the disk and are moved by the latter as a result of rotation, a process gas also being passed upward through an annular gap present between the wall of the vessel and the disk. The apparatus has at least one atomizing member which projects into the particle bed present on the disk. A coating material which is solid at room temperature is melted at least for the major part, sprayed by means of the atomizing member in the interior of the particle bed and onto the particles, and solidified by cooling. Pore-free and smooth coatings can be applied in this manner.

Abstract: A method of making granule-covered roofing material comprises discharging granules onto continuously moving asphaltic material, pressing the granules into the asphaltic material, directing light toward the granule-covered asphaltic material, measuring the reflected light from the granule-covered asphaltic material, and responding to the measured reflected light by modifying a process parameter to effect a change in the reflectance of light from the granule-covered asphaltic material.

Abstract: A method of manufacturing a hot-cathode element which consists of a rare-earth-oxide-doped refractory metal, notably thoriated tungsten, and which also contains carbon components, first a plurality of layers of the hot-cathode element being successively deposited on a substrate member (2) by means of a CVD process, after which notably the hot-cathode element is separated from the substrate member (2). The strength required for further working of the hot-cathode element is improved in that in the course of the CVD process decarburizing intermediate treatments are performed, the hot-cathode element being carburized during an aftertreatment.