Spray pistol using electro-kinetic charging of powder material

Details Spray pistol using electro-kinetic charging of powder material Spray pistol using electro-kinetic charging of powder material

B - Operations, Transporting

05

B

32/17.4

B05B 5/047 (2006.01)

Patent

CA 1336130

A spray gun with electrokinetic charging of powdered material for the purpose of electrostatically coating workpieces with a powder coating. As the powder flows pneumatically through a channel of insulation material in the form of an annular gap, the plastic powder to be applied is charged by superimposition of triboelectric effects with ionization processes initiated by these effects at a passive ionizer electrode, and completed by friction against a semiconductive insert within the annular gap. Thus, the effective area of the electrostatic induction ionizer is expanded, the charge on the powder is increased and spark-like sliding discharges in the flow channels as well as dielectric breakdowns of the channel wall are prevented.

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