Electrostatic fluidized bed coating unit
AssigneeCanada Wire and Cable Limited
InventorsDouglas C. Nethersole, Michael A. Dudley, Mellapalayam R. Parthasarathy
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Abstract
An electrostatic fluidized bed coating unit is disclosed. The coating unit comprises a plenum chamber with means for ingress of a gas under a greater than atmospheric pressure, a porous plate located on top of the plenum chamber and extending to the limits of the containing walls of the plenum chamber, containing walls for powder immediately above the porous plate and forming essentially a continuation of the plenum chamber walls, a coating chamber secured to such powder containing walls, and an exhaust system for effecting a uniform fluidizing gas removal from an area essentially directly above the porous plate.
Claims13
An electrostatic fluidized bed coating unit for applying charged powder particles continuously onto discrete or elongated objects comprising:
- a. a plenum chamber with means for ingress of a gas under a greater than atmospheric pressure;
- b. a porous top plate for said plenum chamber extending to the limits of the containing walls of said plenum chamber;
- c. containing walls for powder immediately above the porous plate and forming essentially a continuation of the plenum chamber walls;
- d. a coating chamber secured to said powder containing walls;
- and
- e. an exhaust system means for effecting a substantially uniform fluidizing gas and powder removal across the entire area essentially directly above the porous plate.
Dependencies are inferred from the claim text.