Appeal No. 1996-2004
Application No. 08/225,889
This is an appeal pursuant to 35 U.S.C. § 134 from the
final rejection of claims 27-32 and 38-49.
Representative claim 27 is reproduced below:
27. A method for adhering two surfaces which comprises:
A. friction rubbing of a thermoplastic, pressure-
sensitive adhesive mass on a first surface and deposition of
adhesive thereon by such friction rubbing;
B. placing a second surface in contact with said
deposited adhesive and applying pressure on the two surfaces
in contact with the adhesive to form a bond wherein the
adhesive consists essentially of a mixture of:
a. about 40% to 75% by weight of polyisobutylene having
a Flory molecular weight of from about 40,000 to 70,000;
b. about 25% to 60% by weight of a wax having a melting
point of at least 165 F and a needle penetration value of fromo
about 1 to 15; and
c. from 0% to 30% by weight of an adhesion promoter
resin for the polyisobutylene and having a softening point
above 150 F; and provided that the wax has a needleo
penetration value of not greater than 8 when the mass contains
at least 10% resin.
The references of record relied upon by the examiner are:
Mueller-Cunradi et al. 2,124,235 Jul. 19, 1938
(Mueller-Cunradi)
Schrader 3,030,322 Apr. 17, 1962
Borisof 3,165,283 Jan. 12, 1965
Pletcher et al. 4,066,600 Jan. 3, 1978
(Pletcher)
Fagan 4,783,354 Nov. 8, 1988
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