The “dipping” of heated parts into a fluidized (aerated) bed of epoxy powder to obtain very high insulation properties and suppressed arcing. In order to accomplish this, compressed air is injected under a porous plate at the hopper’s base. As a result, the fluidized epoxy powder acts like a fluid rather than a compacted powder. The heated part is then “dipped” into the tank, the epoxy melts to create a smooth, continuous coating. With this form of application, epoxy powder can be applied at greater thicknesses than with electrostatic spray. The coated parts are subsequently placed in a curing oven to obtain a hard, good-looking coating.
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