Electrostatic coating

Details Electrostatic coating Electrostatic coating

B - Operations, Transporting

05

B

117/54, 32/17.2

B05B 5/00 (2006.01) B05B 5/03 (2006.01) B05B 5/12 (2006.01) B05B 15/04 (2006.01)

Patent

CA 1078674

Abstract of the Disclosure Disclosed is an electrostatic coating device and method employing highly charged particles that are charged remote from the articles to be coated and then delivered to an area where they are to be applied by conveying them in a moving air stream. The movement is stopped by closing off the air stream, suspending the particles in space. Thereafter the particles are applied to an article by electrostatics. Special components are a powder entraining device which uses air fed at the bottom to erode the powder, feeds additional air from above then removes entrained powder from below; a charging device using the reaction of two converging opposed vortexes to oscillate the powder turbulently through an isolated high voltage electrical zone; and a multiple valve that feeds the charged powder to a can and vents the can, then isolates the can, bypassing the powder.

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