Spraying method for object coating

摘要

The method includes delivering a part of coating powder to a chamber (6) via a powder lead-in (10). The powder is pneumaticly let out of the chambers via an outlet (14) which is mutually opened and closed. An air blast which has the same cross section as the exhaust port, is linearly blown through the chamber to the powder outlet. The coating powder is moved as a stopper and the powder which falls behind the stopper is taken with the air blast to the outlet. The direction of the air blast is vertically directed from the air lead-in (24) through the chamber to the powder outlet.