Method of powder coating a substrate

Details Method of powder coating a substrate Method of powder coating a substrate

B - Operations, Transporting

05

D

B05D 5/00 (2006.01) B05D 3/12 (2006.01) B05D 7/06 (2006.01) B05D 7/24 (2006.01) B05D 1/06 (2006.01)

Patent

CA 2313600

In substrates, such as wood substrates, having sharp edges, corners and other surface discontinuities, in a front appearance surface, non-functional machining, such as formation of grooves, is performed on the rear non-appearance surface adjacent the surface discontinuities. Coating powder is applied, e.g., electrostatically, to the appearance surface of the substrate and the coating powder fused or fused and cured to form a continuous coating on the appearance surface of the substrate. The rear surface machining reduces cracking of the coating at the front surface discontinuities. In some cases, non-functional machining is distributed over the entire non- appearance surface of the work-piece to promote out-gassing of volatiles to the non- appearance surface, thereby eliminating out-gassing-caused defects in the coating formed on the appearance surface.

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