Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1989-06-15
1990-08-21
Lawrence, Evan
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
118622, 118629, 118630, 118DIG5, 427182, B05D 722, B05D 126, B05B 5057
Patent
active
049504975
ABSTRACT:
Electrostatic apparatus and method for coating interior surfaces of objects. The apparatus employs a fluidized bed unit in which the fluidization chamber is relatively shallow, and is circumscribed by a marginal portion that conforms closely to the dimensions and configurations of the cavity of the object. The apparatus employs a non-vacuumized powder recovery and recirculation system, and provides a peripheral slot in the marginal portion of the housing for entry of undeposited powder. Coating inside corners of objects is effectively achieved using the method of the invention, and heavy, uniform builds of the particulate material are produced efficiently and at high rates.
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Gillette Donald J.
Hajek Bedrich
Dorman Ira S.
Lawrence Evan
S.L. Electrostatic Technology, Inc.
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