METHOD AND APPARATUS FOR COATING ELECTROSTATIC POWDER

摘要

On the upstream side of an electrostatic powder coating gun (2), corona discharging means (3) and (104) are provided to apply a voltage of the opposite polarity to that of the gun (2). Before the baking-finished surface of objects (20) and (30) are coated with charged powder, ions are neutralized by providing the baking-finished surfaces with electric potentials of the opposite polarity of the charged powder, thus preventing reverse discharge.