Appeal No. 1997-3784
Application 08/495,297
1. A coated abrasive article having a patterned abrasive
surface, the article comprising:
a substrate having a periphery, a first side and a second
side opposite said first side and comprising a thermoplastic
material;
said first side having a plurality of raised portions
suitable for the application of an abrasive coating thereon,
and recessed areas extending around said periphery on said
first side and between said raised portions, said second side
being substantially planar;
a first adhesive layer applied to said raised portions;
and
an abrasive material deposited onto said first adhesive
layer thereby coating said raised portions to form an abrasive
coating, said recessed areas remaining substantially free of
said abrasive material.
13. A method of making a coated abrasive article, the
method comprising:
providing a substrate comprising a thermoplastic
material, said substrate having a periphery, a first side and
a second side opposite said first side;
forming raised portions in said first side of said
substrate so that said first side consists of said raised
portions suitable for the application of an abrasive coating
thereon with recessed areas extending around said periphery on
said first side and between said raised portions and said
second side consists of a substantially planar surface;
applying an adhesive layer onto said raised portions,
said raised portions providing a means for said adhesive layer
to be applied uniformly; and
depositing an abrasive material on the first adhesive
layer thereby coating the raised portions of the substrate,
the recessed areas remaining substantially free of the
abrasive material deposit.
THE PRIOR ART
The references relied on by the examiner as evidence of
obviousness are:
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