Electrospray coating process

Details Electrospray coating process Electrospray coating process

B - Operations, Transporting

05

D

117/54, 32/17.5

B05D 1/04 (2006.01) B05B 5/025 (2006.01) B05B 5/08 (2006.01) B05D 3/14 (2006.01)

Patent

CA 1260328

Electrospray Coating Process 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 (11) positioned in at least two rows and fed with coating liquid via a reservoir (15). The needles (11) are disposed concentric within holes (13) in an extractor plate (14), a potential is developed between the capillary needles (11) and the extractor plate (14) affording a reduction of the liquid to a mist of highly charged droplets drawn to the substrate by a second electrical field. Insulative layers (64, 66) on the extractor plate provide increased droplet control.

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