Appeal 2007-2144
Application 10/147,015
STATEMENT OF THE CASE
The subject matter on appeal is directed to applying a particular
release coating having low adhesion on a pressure sensitive adhesive
backing layer comprising a fibrous material (Specification 2-6). According
to page 6 of the Specification, examples of polymers used for this particular
release coating
are described in U.S. Pat. Nos. 5,214,119 (Brandt et al.),
5,290,615 (Tushaus et al.), 5,461,134 (Leir et al.), and
5,512,650 (Leir et al.), and also European Pat No. 0 380 236 B1
(Leir).
A particular example of a thermoplastic silicone-
containing polymer is a solvent-borne silicone polyurea, an
example of which is disclosed in U.S. Pat. No. 5,512,650 (Leir
et al.).
Another particular example of a thermoplastic silicone-
containing polymer is a water-borne or water-dispersible
silicone polyurea, an example of which is disclosed in EP Pat.
No. 0 380 236 B1 (Leir).
This release coating allows a roll of tape to be unwound without the
undesirable transfer of adhesive to the backing layer (Specification 1).
Further details of the appealed subject matter are recited in representative
claim 11 reproduced below:
1. An article comprising:
a porous substrate comprising a fibrous material, wherein
greater than 75% of the fibers have a denier of less than 9; and
1 The Appellants state that “[a]ll claims stand or fall together”(Br. 2).
2
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