Methods and apparatus for conducting electrostatic spray coating

Details Methods and apparatus for conducting electrostatic spray coating Methods and apparatus for conducting electrostatic spray coating

1987-03-16

1988-11-22

Lawrence, Evan

Fluid sprinkling, spraying, and diffusing

Processes

Including electrostatic charging

118626, 239 7, 23921425, 239224, 239703, 427 31, B05D 104, B05B 504

Patent

active

047859954

ABSTRACT:
The invention provides methods and apparatus for conducting electrostatic spray coating by which an improved coating layer made uniform in gloss, hardness, weather-tightness, and other characteristics is obtained on an object to be coated. The coating layer is formed with use of a rotary spray head device which is provided with a funnel-like body having an inner wall surface and an open end portion. The rotary spray head device is driven to turn on an axis of rotation surrounded by the inner wall surface of the funnel-like body, and supplied with plural kinds of coating material which are discharged to a substantially common location on the inner wall surface of the funnel-like body simultaneously through respective separate paths so as to form their respective layers superimposed on said inner wall surface of the funnel-like body and move toward said open end portion of the funnel-like body.

REFERENCES:
patent: 3133702 (1964-05-01), Stelchek
patent: 3144209 (1964-08-01), Griffiths

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