Appeal No. 2000-0048
Application 08/909,869
THE INVENTION
The appellants claim a reverse painting process wherein 1
during a step of applying powder coating material to a
preheated workpiece, a sheet of the workpiece having a slower
cooling rate than another sheet cools to below the softening
point temperature of the powder. The appellants state that
due to the preheating and cooling, 1) the coating material at
the boundary between a film formed by powder coating and an
electrodeposited film formed next to it on the workpiece
surface is sufficiently thick to provide a high level of
rustproofing, and 2) the time required for the subsequent
fusing of the powder coating is significantly shortened
(specification, page 6, lines 12-17). Claim 1 is
illustrative:
1. A reverse painting process for work to be painted
with a powdery paint having a crosslinking and curing
1 The appellants state that reverse painting is “a method
which comprises forming a powder coating on, for example, a
part of a vehicle body, giving it heat treatment, and forming
an electrodeposited coating on the rest thereof”
(specification, page 1, lines 8-11).
2
Page: Previous 1 2 3 4 5 6 7 Next
Last modified: November 3, 2007