Patent ID: 8096260
Filing Date: 2012-01-17
Classification: B05C,B05D

Abstract:
1. A coating apparatus for coating a surface of a building board while conveying the building board with the surface facing upward, the coating apparatus comprising: an housing having a inlet and an outlet so that a building board is conveyed through the inlet and outlet; a conveyance line for conveying the building board, the conveyance line being disposed so that the building board is conveyed through the inlet and the outlet of the housing; an application device for applying a coating material toward the conveyance line, the application device being disposed so that the coating material is applied to the surface of the building board; a removal device for blowing high-pressure air toward the conveyance line, the removal device being disposed so that an excess coating material applied to the surface of the building board is removed by high-pressure air, thereby forming a coating liquid film on the surface of the building board; a pressure device for blowing air toward the conveyance line, the pressure device having an air chamber having an air outlet from which air is blown and being disposed so that the air is applied to the coating liquid film on the surface of the building board; a decompression device for reducing air pressure under the conveyance line; and a coating material recovering chamber, wherein the removal device, the pressure device, the coating material recovering chamber, and the decompression device are disposed in the housing, the application device, the removal device, and the pressure device are disposed in order from the inlet to the outlet of the housing and above the conveyance line, the application device can feed 50-200 g/shaku the removal device is disposed at an angle toward the conveyance line and to be separated from the application device, the pressure device is disposed adjacent to the removal device so that atmospheric air pressure or higher is applied on the conveyance line while the building board is conveyed from the removal device to the pressure device, the air outlet of the pressure device is wider than the conveyance line so that the blown air covers the surface of the building board to be coated, the coating material recovering chamber and the decompression device is disposed under the conveyance line and in order from the inlet to the outlet, the coating material recovering chamber is disposed beneath the application device and the removal device so as to recover the coating material, the decompression device is disposed so that pressure under the conveyance line is reduced by inhaling air from inside of the housing and exhaling air to outside of the housing, and the decompression device is disposed beneath the pressure device and separated from the coating material recovering chamber.