Appeal No. 1997-3282
Application No. 08/189,314
Before addressing the examiner's rejection specifically,
we note that on page 4 of the brief, appellant has indicated
that "claims 1-12 stand or fall together as a group."
However we will separately review each of the independent
claims since we note that the subject matter central to
appellant's arguments with regard to independent claim 1 is
absent from independent
claim 12.
Shibano relates to pressure sensitive adhesive products,
including tapes or double-coated tapes, having a pressure
sensitive adhesive layer and one or more release layers
(column 1, lines 11-16). The invention is characterized by a
release layer (A) exclusively comprising a polyolefinic
elastomer (a) having a predetermined shearing modulus and
predetermined surface wettability and a pressure sensitive
adhesive layer (F) composed mainly of a polyacrylate, wherein
the release layer and the adhesive are allowed to come into
contact with each other (column 1, lines 42-48). The
polyolefinic elastomer (a) used as the release layer may be a
polymer or a mixture of two or more polymers. Polyolefinic
5
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