Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1986-08-29
1988-05-31
Kittle, John E.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427 32, 427 39, 118638, 118630, 118 72, 346140PD, 239696, B05D 104, B05B 502
Patent
active
047480432
ABSTRACT:
An electrostatic coating system for applying very thin coating to a substrate in air at atmospheric pressure comprises a plurality of spaced capillary needles positioned in at least two rows and fed with coating liquid via a manifold. The needles are disposed concentric within holes in an extractor plate, a potential is developed between the capillary needles and the extractor plate affording a reduction of the liquid to a mist of highly charged droplets drawn to the substrate by a second electrical field. Insulative layers on the extractor plate provide increased droplet control.
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Eckhardt Carey J.
Seaver Albert E.
Barnes John C.
Bashore Alain
Kittle John E.
Minnesota Mining and Manufacturing Company
Sell Donald M.
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