Appeal No. 2006-0440
Application No. 10/291,933
According to the appellants, the claimed method is particularly
well suited for coating rolls, pipes, belts, die cutting devices
and a variety of other cylindrical substrates. (Specification
at 8, lines 5-23.) Further details of this appealed subject
matter are recited in representative claims 1, 17, and 18
reproduced below:
1. A method for coating a substrate comprising:
i) rotating the substrate about an axis at a
selected rotational speed,
ii) applying a polymeric reaction mixture to
a surface of the rotating substrate by
ejecting the polymeric reaction mixture
through a die at a selected flow rate,
said die dividing an inlet stream of the
polymeric reaction mixture into plural
outlet streams, the outlet streams being
applied to the substrate and the outlet
streams being spaced apart from each
other such that the outlet streams flow
together seamlessly after application to
the substrate,
iii) effecting relative linear movement
between the rotating substrate and the
die in a direction parallel to the axis
of rotation at a selected relative linear
speed, and,
iv) synchronizing the reaction mixture flow
rate, the relative linear speed and the
rotational speed in such a way that
successive convolutions of the outlet
streams of the polymeric reaction mixture
overlap and meld together seamlessly.
2
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