Patent ID: 7879140

Claim:
A method for degassing coating material comprising the steps of: supplying coating material to a first stage of a single degassing apparatus having the first stage in a first compartment and a second stage contained in a second compartment of the same single degassing apparatus; degassing the coating material in the first stage in the first compartment by forming a vacuum therein; forming a vacuum in the second compartment containing the second stage; feeding the degassed coating material from the first stage to a bottom part region of a drum rotating in the second compartment around an essentially vertical axis, the second compartment having an inner wall, the vertical axis defining a radial direction and a height direction, and wherein the drum has an inner wall; rotating the drum to cause the coating material to rise up the inner wall of the drum and to discharge from an upper edge of the drum as a thin film against the inner wall of the second compartment so that the coating material flows downwards along the second compartment inner wall; and conducting the coating material out of the second compartment.