Electrospray coating apparatus and process

Details Electrospray coating apparatus and process Electrospray coating apparatus and process

B - Operations, Transporting

05

D

B05D 1/04 (2006.01) B05B 5/025 (2006.01) B05B 5/035 (2006.01)

Patent

CA 2143960

An electrospray coating head system (10) for applying thin coating to a substrate comprising a slot (20) or blade to meter a liquid onto a shaping structure (15) which forces the liquid to have a single continuous and substantially constant radius of curva- ture around the shaping structure (15). A voltage applied to the liquid around the shaping structure causes the liquid to produce a series of filaments which are spatially and temporally fixed, the number of filaments being defined and temporally fixed, the number of filaments being defined by a simple adjustement in the applied voltage. The filaments break up into a uniform mist of charge droplets and are driven to a substrate by electric fields to produce a coating. Also a method for electrospray coating.

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