Electrostatic powder coating device

Details Electrostatic powder coating device Electrostatic powder coating device

1988-12-21

1990-02-20

Nozick, Bernard

Coating apparatus

With means to apply electrical and/or radiant energy to work...

Electrostatic and/or electromagnetic attraction or...

118 70, 118100, 118326, 118DIG7, B05B 502

Patent

active

049016660

ABSTRACT:
A cover for forming a space for coating is provided above an electroconductive belt conveyor for adjusting an electric field at an end portion of a flat plate-like object to be coated, electrostatic powder coating guns pointed at the object to be coated on the belt conveyor in the space for coating are provided, and means for introducing air into the space for coating and means for exhausting the air are respectively provided. As a result, the strength of the electric field formed from the electrostatic powder coating guns to the electroconductive belt conveyor and the object to be coated is made uniform through their entire surface so that the thickness of a powder layer to be adhered to the object to be coated is made uniform from its central portion to an end portion. Consequently, the waste of the powder coating material is prevented, and local cracks in a portion having a great thickness generated when the coated object is bent are prevented.

REFERENCES:
patent: 2723921 (1955-11-01), Starkey
patent: 3902455 (1975-09-01), Lehmann et al.
patent: 3918641 (1975-11-01), Lehmann et al.
patent: 4587924 (1986-05-01), Reinlein et al.

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