Abstract: A composition which provides enhanced removal of aldehydes from the air of the building interior. The composition includes an amino silane and a multivalent metal carbonate and is especially suitable for adding to building product board substrates, such as acoustical ceiling panels and gypsum wallboards. The composition of the invention can be applied during manufacturing or can be post applied to already constructed room surfaces. The composition provides longevity of aldehyde removal heretofore unachieved.

Abstract: The invention is a surface coating which will reduce the aldehyde concentration in a room via a aldehyde reactive material contained in the coating. Upon reaction, the aldehyde becomes part of the reactive molecule and, thus, is permanently held within the coating.

Abstract: The invention is a surface coating which will reduce the aldehyde concentration in a room via a aldehyde reactive material contained in the coating. Upon reaction, the aldehyde becomes part of the reactive molecule and, thus, is permanently held within the coating.

Abstract: A composition which provides enhanced removal of aldehydes from the air of the building interior. The composition includes an amino silane and a multivalent metal carbonate and is especially suitable for adding to building product board substrates, such as acoustical ceiling panels and gypsum wallboards. The composition of the invention can be applied during manufacturing or can be post applied to already constructed room surfaces. The composition provides longevity of aldehyde removal heretofore unachieved.

Abstract: A fire protective flat panel radiator assembly for installation in a suspended ceiling grid is provided. The assembly includes a flat panel radiator having a frame that supports a sonic diaphragm, which is driven by a transducer to reproduce an audio program. A back box is mounted to the radiator and the back box covers and encloses the diaphragm and other fire susceptible components of the radiator. The back box is provided with a cut-out portion that is covered with an air pervious panel, which is resistant to fire hazards but that allows air flow in and out of the back box. In one embodiment, the radiator has a bridge and the back box is formed by a pair of shells mounted on each side of the bridge to enclose and protect the diaphragm. The result is a fire protected flat panel radiator assembly that meets the fire performance requirements for air handling plenums while retaining the sonic fidelity of a flat panel sound radiator without a fire protective back box.

Abstract: A fire protective flat panel radiator assembly for installation in a suspended ceiling grid is provided. The assembly includes a flat panel radiator having a frame that supports a sonic diaphragm, which is driven by a transducer to reproduce an audio program. A back box is mounted to the radiator and the back box covers and encloses the diaphragm and other fire susceptible components of the radiator. The back box is provided with a cut-out portion that is covered with an air pervious panel, which is resistant to fire hazards but that allows air flow in and out of the back box. In one embodiment, the radiator has a bridge and the back box is formed by a pair of shells mounted on each side of the bridge to enclose and protect the diaphragm. The result is a fire protected flat panel radiator assembly that meets the fire performance requirements for air handling plenums while retaining the sonic fidelity of a flat panel sound radiator without a fire protective back box.

Abstract: Disclosed is both a method and composition for forming a thermo-formable acoustical panel. The panel may be formed from multi-component polymer fibers or mono-filament polymer fibers dispersed in a mineral fiber batt. The polymer fibers are bound to the mineral fibers by the application of heat to form the acoustical panel. The panel exhibits both enhanced flame resistance and thermal insulation.

Abstract: Disclosed is both a method and composition for forming a thermo-formable acoustical panel. The panel may be formed from multi-component polymer fibers or mono-filament polymer fibers dispersed in a mineral fiber batt. The polymer fibers are bound to the mineral fibers by the application of heat to form the acoustical panel.

Abstract: The present invention relates to a method and apparatus for segmenting groove molded building boards. In a preferred embodiment, a sheet of groove molded board is conveyed onto a first apparatus which separates the side edge trim scrap from the board. The board then passes onto a segmenting apparatus comprising a first horizontal conveyor, an inclined conveyor, a second generally horizontal conveyor, and adjustably mounted roller assemblies. The first apparatus removes the side-edge trim scrap from the board and the second segmenting apparatus breaks the groove molded board transversely along the groove molded lines. In addition, the second apparatus separates the leading and trailing edge scrap so as to provide individual board panels which require no additional trimming. As an alternative, two segmenting conveyors can be used in tandem so as to remove all of the scrap, thereby obviating the need for the first trim-scrap removing apparatus.

Abstract: The present invention relates to a method and apparatus for segmenting groove molded building boards. In a preferred embodiment, a sheet of groove molded board is conveyed onto a first apparatus which separates the side edge trim scrap from the board. The board then passes onto a segmenting apparatus comprising a first horizontal conveyor, an inclined conveyor, a second generally horizontal conveyor, and adjustably mounted roller assemblies. The first apparatus removes the side-edge trim scrap from the board and the second segmenting apparatus breaks the groove molded board transversely along the groove molded lines. In addition, the second apparatus separates the leading and trailing edge scrap so as to provide individual board panels which require no additional trimming. As an alternative, two segmenting conveyors can be used in tandem so as to remove all of the scrap, thereby obviating the need for the first trim-scrap removing apparatus.

Abstract: The present invention relates to a method and apparatus for segmenting groove molded building boards. In a preferred embodiment, a sheet of groove molded board is conveyed onto a first apparatus which separates the side edge trim scrap from the board. The board then passes onto a segmenting apparatus comprising a first horizontal conveyor, an inclined conveyor, a second generally horizontal conveyor, and adjustably mounted roller assemblies. The first apparatus removes the side-edge trim scrap from the board and the second segmenting apparatus breaks the groove molded board transversely along the groove molded lines. In addition, the second apparatus separates the leading and trailing edge scrap so as to provide individual board panels which require no additional trimming. As an alternative, two segmenting conveyors can be used in tandem so as to remove all of the scrap, thereby obviating the need for the first trim-scrap removing apparatus.

Abstract: An apparatus and method for reducing material accumulation on processing equipment caused by electrostatic charge. By proper selection of materials, the equipment is designed to automatically develop a charge of the same polarity as that on the material being processed and thereby repel the material. The selection can be based on the relationship of the materials in the Triboelectric Series. The processing equipment is also electrically insulated from discharge paths so that the charge developed will not be dissipated or require high current generation to maintain the voltage required to repel the material particles.

Abstract: A mixture of binder and fibrous material is introduced into the upper regions of a mat-forming zone. The mixture is intersected by a horizontally or upwardly directed air stream and entrained therein, then layered onto at least one foraminous wire by exhausting the entraining air through said foraminous wire or wires. By reducing turbulence and by controlling the manner in which the particulate matter is deposited upon the foraminous wires, uniform non-woven webs can be obtained which may be used in a variety of ways to form versatile building products.

Abstract: A mixture of binder and fibrous material is introduced into the upper regions of a mat-forming zone. The mixture is intersected by a horizontally or upwardly directed air stream and entrained therein, then layered onto at least one foraminous wire by exhausting the entraining air through said foraminous wire or wires. By reducing turbulence and by controlling the manner in which the particulate matter is deposited upon the foraminous wires, uniform non-woven webs can be obtained which may be used in a variety of ways to form versatile building products.

Abstract: A mixture of binder and fibrous material is introduced into the upper regions of a mat-forming zone. The mixture is intersected by a horizontally or upwardly directed air stream and entrained therein, then layered onto at least one foraminous wire by exhausting the entraining air through said foraminous wire or wires. By reducing turbulence and by controlling the manner in which the particulate matter is deposited upon the foraminous wires, uniform non-woven webs can be obtained which may be used in a variety of ways to form versatile building products.

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: A process for forming a mineral wool, resin-bound acoustical insulating fiberboard product is described, which includes steps for mixing mineral wool fibers and powdered thermosetting binder, the introduction of the mixture into an air stream, and the directing of the entrained mixture into a mat-forming zone formed by converging upper and lower forming wires, the exhausting of air through the wires to build up layers of fiber and binder thereon and the consolidation and heating of the layers to form a fiberboard product, the amounts of air exhausted through the forming wires being adjusted so that a resin-enriched layer of predominantly fine fibers is initially deposited on the upper forming wire. A preferred embodiment is disclosed wherein an open mesh glass fabric is positioned between the lower forming wire and the layer of fibers and resins being formed thereover, said fabric acting as a carrier for the board-forming mat.

Abstract: An apparatus for forming a mineral wool fiberboard product is described which includes means for separating mineral wool fibers and means for intimately mixing said fibers with a thermosetting powdered binder, means for entraining said mixture of fibers and binder in an air stream including means for directing said air stream into a mat-forming zone formed by converging upper and lower forming wires, means for exhausting air through said forming wires whereby the fiber and binder mixture is collected as two layers on the forming wires with the two layers becoming consolidated at the nip opening formed between the converging screens, and compacting and heating means whereby the mat of fibers and resins is compacted and cured to form a mineral fiberboard product, said exhaust system behind said screens being adjustable whereby the upper and lower outer layers of fibers and resins initially formed on said screens is comprised of an enriched layer of predominantly fine fibers.

Abstract: The edge of a ceiling tile adjacent the fissured or embossed face of the ceiling tile is provided with a powder coating. The ceiling tile is formed from a fibrous board which has an open pore structure, and powder is dusted on the edge of the ceiling tile and is mechanically held in the open pore structure of the ceiling tile. The powder coating covers the upper edge of the ceiling tile with a coating so as to eliminate the dark edge effect secured when two ceiling tiles are in position with their front planar surfaces not quite in the same plane.

Abstract: A punch press is utilized for rapidly embossing ceiling tile. The embossing plate in the press is backed up with a high output heater to assist in the embossing operation.