Abstract:
Binders for powder coatings are disclosed that contain, solid, unsaturated polyesterurethane (meth)acrylates having a melting temperature of from 35 to 180° C.
Abstract:
A method of producing asphalt strip shingles includes continuously coating a substrate with asphalt to form an asphalt coated sheet, moving the asphalt coated sheet in a machine direction, depositing blend drops of blend drop granules onto the asphalt coated sheet from a blender, providing a signal indicative of the presence of the blend drops at a location downstream from the blender, sensing the color of the blend drops at the downstream location with a sensor, comparing the sensed color of the blend drops with a reference color, and providing a signal indicative of the comparison.
Abstract:
A method is provided for applying metallic or metal-ceramic coatings to a product surface, particularly during the manufacture and repair of pressurized articles and products which require increased corrosion resistance, heat resistance and other qualities. Compressed air is preliminary heated to a temperature of from 400 to 700° C., forming a high-velocity air flow in a supersonic nozzle. A powder material, which is a mechanical mixture of ceramic and metal powders, is accelerating by the flow and is applied to a product surface. The metal powder is a powder mixture of at least two metals, one of which is zinc powder in an amount of from 20 to 60% of the metal powder total weight. The presence of zinc in the powder material and the heating of the compressed air to 400 to 700° C. assures high-efficiency production of coatings having low gas-permeability and high coating-to-substrate bond strength.
Abstract:
A method for manufacturing a cover assembly including a transparent window portion and a metallic frame that can be joined to a micro-device package base to form a hermetically sealed micro-device package. A sheet of a transparent material is provided having a window portion defined thereupon, the window portion having finished top and bottom surfaces. A frame-attachment area is prepared on the sheet, the frame-attachment area circumscribing the window portion. A first quantity of powdered metal particles is sprayed onto the prepared frame-attachment area of the sheet using a jet of gas, the gas being at a temperature below the fusing temperature of the metal particles. The jet of gas has a velocity sufficient to cause the metal particles to merge with one another upon impact with the sheet and with one another so as to form an initial continuous metallic coating adhering to the frame-attachment area of the sheet. Successive quantities of powdered metal particles are applied over the initial continuous metallic coating using the jet of gas so as to form a continuous built-up metallic frame incorporating the initial continuous metallic coating as its base and having an overall thickness that is a predetermined thickness.
Abstract:
In accordance with the present invention, there are provided methods for enhancing the color of gemstone(s) by subjecting a combination of a gemstone and at least one finely divided form of a selected treating agent including the element copper to a temperature in the range of about 700° C. up to about 1000° C., for a time period in the range of about 3 hours up to about 600 hours, under conditions suitable to enhance the color of the gemstone, wherein the treating agent consists of a finely divided form of the selected treating agent such as copper metal or copper oxide, and wherein said gemstone is topaz or sapphire and the enhanced color lies in the color spectrum of light yellow to red.
Abstract:
Glitter is applied to cylindrical articles by forcing them through a pot of clear lacquer, squeegeeing the coating to a desired thickness by means of an elastic elastomeric grommet, and then immediately passing the articles through a pot of glitter. The articles then pass through a vacuum tube, which removes the excess glitter for reuse.
Abstract:
A method of applying blend drop granules to an asphalt coated sheet includes moving an asphalt coated sheet in a machine direction, depositing a blend drop of granules on a blend drop conveyor that is moving at a first speed, changing the speed of the blend drop conveyor to a second speed that is closer to the speed of the moving asphalt coated sheet than is the first speed, and releasing the blend drop from the blend drop conveyor for contact with the asphalt coated sheet.
Abstract:
A method for dispensing particles onto a surface. The steps of the process include holding the particles in a hopper having a dispensing opening covered by a screen which has uniformly sized openings that are sufficiently large to allow the largest particles to pass through, yet sufficiently small to hold the particles back when the dispenser is not operating; rotating, outside the hopper, a cylindrical brush covered with regularly spaced bristles and positioned such that the bristles protrude through openings in the screen and draw particles through the screen to dispense them onto the surface; and varying the dispensing rate of the particles by at least one of (a) varying the rotation speed of the brush, (b) adjusting the distance from the screen to the central longitudinal axis of the brush, (c) adjusting the screen opening size, (d) adjusting the brush-to-screen pressure, or (e) adjusting the tension of the screen. A method of making a web with embedded particles. This method includes the following sequential steps: making the web receptive to the particles; eliminating static charge present on the web; dispensing the particles onto the web; dispersing the particles to minimize particle clumping in the web; and embedding the dispensed particles in the web.
Abstract:
A light-reflective decorative glittered article is made by cutting a light-reflective foil into glitter flakes, mixing the flakes with a powdered resin to form a mixture, flocking the mixture onto a curable adhesive applied on areas of a base material to be decorated, and curing the adhesive while concomitantly causing the resin on contacting flakes to become tacky. Scattering and fall-off of the flakes during manufacture are reduced.