Coating processes – Immersion or partial immersion
Patent
1996-02-29
1997-12-02
Utech, Benjamin
Coating processes
Immersion or partial immersion
427435, 118429, B05D 118, B05D 124, B05D 302
Patent
active
056933720
ABSTRACT:
A process for dip coating drums comprising providing a drum having an outer surface to be coated, an upper end and a lower end, providing at least one coating vessel having a bottom, an open top and a cylindrically shaped vertical interior wall having a diameter greater than the diameter of the drum, flowing liquid coating material from the bottom of the vessel to the top of the vessel, immersing the drum in the flowing liquid coating material while maintaining the axis of the drum in a vertical orientation, maintaining the outer surface of the drum in a concentric relationship with the vertical interior wall of the cylindrical coating vessel while the drum is immersed in the coating material, the outer surface of the drum being radially spaced from the vertical interior wall of the cylindrical coating vessel, maintaining laminar flow motion of the coating material as it passes between the outer surface of the drum and the vertical interior wall of the vessel, maintaining the radial spacing between the outer surface of the drum and the inner surface of the vessel between about 2 millimeters and about 9 millimeters, and withdrawing the drum from the coating vessel.
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Chambers John S.
Cummins Leslie B.
Dilko John T.
Forgit Rachael A.
Grammatica Steven J.
Chen Bret
Utech Benjamin
Xerox Corporation
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