Patent ID: 6592672
Filing Date: 2003-07-15
Classification: B05B,B05D,Y10T

Abstract:
A coating apparatus for coating a concavity of a building board, said coating apparatus comprising:a conveyor for transferring the building board; one or more coating nozzles for paint jetting a gradated coating on the concavity formed in a surface of the building board transferred by said conveyor, each of said one or more coating nozzles being a jetting nozzle including a center jetting orifice for jetting paint as a regulated jet in the form of a paint membrane, and one or more air-jet orifices for jetting air along one or both of right and left edges of said paint membrane, such that said paint membrane has a gradated shading which is darkest at a center thereof and gradually lightens outwardly from the center; and a controlling mechanism for controlling an orientation of said coating nozzles relative to the concavity based on information of a cross-sectional geometry in crosswise direction of the concavity, such that the gradated coating is darkest at a bottom of the concavity and gradually lightens along sides thereof toward an upper surface of the building board.