Appeal No. 2000-2014
Application No. 08/713,672
BACKGROUND
The appellants' invention relates to a thermal processing
unit for processing a plastisol-containing article comprising
a radiant heat transfer section followed by a separate
convection heat transfer section. The radiant heat transfer
section raises the temperature of the article relatively
rapidly to an approach temperature which is lower than a
target temperature and the convection heat transfer section
raises the temperature of the article at a slower rate of
increase to the target temperature. The target temperature is
a temperature which must be reached, but which should not be
exceeded, for appropriate processing of the article. As
explained on pages 11 and 12 of appellants' specification,
appellants' arrangement takes advantage of the benefits of
both radiant and convection heat transfer units. For example,
this arrangement permits the temperature of the article to be
rapidly raised to a temperature close to the target
temperature while availing the process of the more precise
control of a convection heat transfer section so as to reduce
the probability of exceeding the target temperature. The
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