Method of electrostatically coating nonconductive panels

Details Method of electrostatically coating nonconductive panels Method of electrostatically coating nonconductive panels

1991-09-03

1993-11-16

Beck, Shrive

Coating processes

Direct application of electrical, magnetic, wave, or...

Electrostatic charge, field, or force utilized

427210, 427421, B05D 104

Patent

active

052622070

ABSTRACT:
Plastic automotive panels are painted electrostatically by coating the rear of the panel with conductive material to serve as the grounded terminus of an electrostatic paint deposition field and paint is sprayed onto the front of the panel by conventional electrostatic spray guns. The coating is applied to the panels by spraying a conductive salt or a conductive primer to the rear surface and allowed to dry, or the panel is formed with the conductive coating molded in situ. In the latter case, conductive material is sprayed onto a mold surface or a metal foil or metallized plastic sheet is inserted into the mode before the part is formed to result in a panel with a conductive rear surface. Also, in-mold coating can be used to apply a conductive coating during the formation of a plastic panel.

REFERENCES:
patent: 3236679 (1966-02-01), Spiller et al.
patent: 3741793 (1973-06-01), Simmons
patent: 4585699 (1986-04-01), Berteaud et al.

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