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US 4,122,211 AGranted
Process for coating electric or electronic elements
AssigneeSumitomo Durez Company, Ltd.
InventorsToyoji Kikuga, Masayuki Nakamura, Tateo Goto, Tosaku Amakawa
Life of this patent
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Abstract
A process for coating electronic elements comprises the steps of (1) forcibly impregnating an element with a liquid thermosetting resin undercoat, (2) depositing a powdered coating material on the element as a topcoat by electrostatic fluidized bed dip coating the element before the undercoat is dry, and (3) curing the resin by heating.
Claims9
An improved coating process for electronic elements which comprises the steps of:
- (1) forcibly impregnating the element with a liquid thermosetting resin,
- (2) applying a powdered resin to the element before the liquid thermosetting resin is dry by electrostatic fluidized bed dip coating, and
- (3) heating the element to cure the liquid thermosetting resin.
Dependencies are inferred from the claim text.