Abstract: An apparatus for spray marking lumber boards with paint at predetermined locations while they are being conveyed past the device for further processing. A tachometer and a photoelectric unit are employed for determining the location and speed of the board. A solenoid-operated paint sprayer is used to deliver the paint to the boards. Electronic control circuitry is provided to activate the paint sprayer and properly coordinate the operation of paint sprayer with the location and speed of the board so the board is marked at the desired locations.

Abstract: Cross-linked acrylate-acetoacetate polymers are disclosed. These polymers are prepared by the reaction of at least one polyfunctional acrylate with at least one diacetoacetate in the presence of a catalyst capable of promoting the reaction between the polyfunctional acrylate and the diacetoacetate. In a preferred embodiment, the polymers are employed to produce wear layer compositions for surface coverings.

Abstract: Crosslinked acrylate-acetoacetamide polymers are disclosed. These polymers are prepared by the reaction of at least one polyfunctional acrylate with at least one diacetoacetamide in the presence of a catalyst capable of promoting the reaction between the polyfunctional acrylate and the diacetoacetamide. In a preferred embodiment, the polymers are employed to produce wear layer compositions for surface coverings.

Abstract: The process for making a surface covering having an embossed wear surface, including embossed design portions which differ in elevation and shading, by depositing a liquid resinous base coating onto a backing, depositing a layer of resinous dryblend onto the liquid resinous coating while it is still wet, heating to sinter the dryblend and at least partially set the base coating, producing a design on the sintered layer by applying settable resinous ink to at least a portion thereof in sufficient amounts and viscosity to permit penetration of the ink into the dryblend layer to a depth of about 10 mils (0.254 mm) at the points of application, at least a portion of the design being formed by applying the ink in minute separate but closely spaced deposits, and heating the composite structure for final fusion to form a non-porous sheet wherein the design areas containing the closely spaced ink deposits may differ in shading and elevation in their ink-containing and non-ink-containing portions.

Abstract: An apparatus for measuring an exothermic reaction in a thin film of a photopolymerizable, ethylenically-unsaturated mass, which apparatus comprises a thin foil differential thermocouple means, a pore means adjacent to and mounted above the thermocouple means, a perforated plate means positioned above the pore means and an ultraviolet light source means positioned above the plate means is disclosed.

Abstract: The process for making a cellular surface covering having a multi-level embossed decorative wear surface by applying to a porous substrate a plurality of thermoplastic resinous inks developed from thermoplastic binders having different molecular weights and therefore different melt viscosities, the inks and substrate comprising a composite structure which also includes a blowing agent. The blowing agent may be either in the substrate or in the inks applied thereto. Upon final heating to fuse and foam all the resinous material of this structure, the metal viscosity differences of the resins in the inks provide varying degrees of physical resistance to expansion of the total system in the inked areas, thus producing multi-level design areas on the final product.

Abstract: A process of forming an embossed surface covering is disclosed. The process comprises forming a crosslinkable foam on a backing, depositing a deactivator composition to inhibit cross-linking on at least a portion of the cross-linkable foam, and heating the resulting crosslinkable foam-containing sheet to a temperature sufficient to crosslink the portions of the foam not affected by the deposition of deactivator composition and melt the portions of the foam affected by the deposition of deactivator composition.

Abstract: A method and apparatus for reducing the surface gloss of a coating are disclosed. In one embodiment, the method comprises moving in a continuous manner a material which is to be coated, applying at least one coating composition on the material, impinging the surface of the coating composition with a fluid, partially curing the coating composition by radiation, removing any remaining fluid from the surface of the coating composition, and completing the cure of the coating composition.

Abstract: The invention is directed primarily to a display device for floor tile. The display device mounts on the top of a carton of floor tile with one floor tile positioned within the display device. The display device also has a provision for a photo showing the particular tile product in use in a room display scene.

Abstract: A process of forming a surface covering having decorative effects is disclosed. The process comprises forming a foam comprising at least one polymer having at least a first phase region and a second phase region on a backing, heating the foam to the flow temperature of the first phase region of the foam, compressing the heated foam and cooling the foam while in the compressed shape, thus facilitating coating the surface of the foam which remains in the compressed shape, and reheating the foam to permit the compressed foam to return to substantially its precompressed shape.

Abstract: An improved method for producing acoustical fiberboard, which method comprises adding agglomerate articles formed from an aqueous composition comprising fiberboard dust, a glactomannan gum or glactomannan gum derivative, and a crosslinking agent to an aqueous fiberboard slurry, is disclosed. The resulting acoustical fiberboard exhibits excellent sound absorption.

Abstract: The invention is directed to an electroforming mandrel of a specific structure which is used for making an electroformed product. The invention also embodies a method for producing an embossing surface.

Abstract: A microwave oven is provided having a field stirring and shifting device for use at high power levels. A circular plate having a set of parallel strips affixed to its surface is mounted in a recessed position in one wall of the heating chamber of a microwave oven. The plate is rotated to periodically affect the microwave heating field distribution in the chamber and to provide more uniform heating of objects in the chamber.

Abstract: The invention is directed to a technique for the generation of film negatives which will be used in a chemical etching process to provide a previously etched surface with texturing on the broad, flat areas of a previously etched surface. A rubbing is used to form a basis for a series of photographic negatives which provide an indication of the different levels of texturing.

Abstract: An acoustical board comprised of felted mineral wool and clay is embossed by applying an aqueous dispersion of lithium carbonate and borax to selected areas of the board surface, drying the coating and firing at a temperature in the range of from about 1200.degree. F. to 1600.degree. F. A prime clay coat may be provided which acts as a barrier and gives better control of board embossing.

Abstract: The invention is directed to a method of embossing a wood grain pattern on a composition board surface to provide it with a grain detail such that auto-glazing may be carried out. Auto-glazing is automatically providing variable amounts of glazing on a wood surface to highlight the grain pattern of the wood.

Abstract: A process is disclosed for the making of a decorative carpet through the use of sublimable dyes. A shading effect is secured through the use of air flow control sheets that affect the flow of air through a transfer sheet and a carpet product adjacent thereto. By lessening air flow, the intensity of dye being transferred is also lessened so that shades of a certain color can be secured.

Abstract: A microwave energy trap for use in conjunction with the exit and entrance ports of a conveyorized microwave oven. The energy trap operates to prevent the escape of microwave energy through the ports into the surrounding environment. The energy trap comprises a tunnel having a current suppressing coating, resonant slots communicating through the wall of the tunnel, and waveguide chambers located over the slots for absorbing and dissipating microwave energy.

Abstract: A photoinitiating composition is disclosed which is useful for incorporating into an ethylenically-unsaturated photopolymerizable mass and which comprises a peroxygen-containing naphthalenic compound or an organic peroxygen-containing compound and naphthalene or substituted naphthalene.