Coating apparatus – Control means responsive to a randomly occurring sensed... – Responsive to attribute – absence or presence of work
Patent
1989-03-20
1991-07-09
Beck, Shrive
Coating apparatus
Control means responsive to a randomly occurring sensed...
Responsive to attribute, absence or presence of work
118627, 118630, 118638, B05C 1100
Patent
active
050295535
ABSTRACT:
An apparatus for providing a uniform application of a functional coating to one or both sides of a moving metal strip includes an enclosed cabinet in which a corona discharge field is established between high voltage electrodes and the strip. The coating liquid and air are separately supplied under pressure to atomizing nozzles within the enclosure. The nozzles create a dense flat spray that is directed into the discharge field at an acute angle relative to the strip. The particles in the spray become charged and are attracted to the grounded strip, while those that are not charged are directed onto the strip by the force of the discharge field. The rate at which the coating liquid is supplied to the nozzles is varied in accordance with the speed of the strip to thereby obtain a uniform coating regardless of variations in strip speed or width.
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Bashore Alain
Beck Shrive
Trion, Inc.
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