Electricity: electrical systems and devices – Electric charging of objects or materials – Particulate matter
Patent
1979-09-28
1982-10-26
Moose, Jr., Harry E.
Electricity: electrical systems and devices
Electric charging of objects or materials
Particulate matter
43132A, 118626, 239690, 361228, B05B 502
Patent
active
043565280
ABSTRACT:
Electrostatic spraying of liquid compositions is carried out by supplying the liquid to a spray orifice, preferably of capillary dimensions, having a charged surface which is electrically conducting or semi-conducting and which is adjacent a field intensifying electrode, the arrangement being such that the liquid is drawn out primarily by electrostatic forces, atomized into electrically charged particles without substantial corona discharge and projected past the field intensifying electrode. The spraying process and apparatus has particular utility in the spraying of liquid pesticide compositions at ultra-low volume, in that the droplets are of uniform size and are electrostatically attracted to the plants so as to wrap around the leaves of the planets and coat both the upper and lower surfaces of the leaves.
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"Electrostatics and Its Applications" A. D. Moore, ed., John Wiley and Sons, New York, 1973, pp. 250-280.
"Naturwissenschaften", vol. 40 (1953), p. 337, column 1.
Paper by F. E. Luther, "Electrostatic Atomisation of No. 2 Heating Oil" given at API Research Conference on Distillate Fuel Combustion, Chicago, Illinois, Jun. 14-20, 1962.
"Application of Electrostatic Charging to the Deposition of Insecticides and Fungicides on Plant Surfaces"-Bowen et al., Agricultural Engineering 6/52, pp. 347-350.
Generation of charged drops of insulating liquids by electrostatic spraying"-Kim et al., Journal of Applied Physics, vol. 47, No. 5, pp. 1964-1969, 5/76.
Imperial Chemical Industries plc
Moose Jr. Harry E.
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