Appeal 2006-2900
Application 10/683,531
1. A multilayer film comprising:
a) a first and second outer layer each comprising a polymer; and
b) an internal layer comprising an oxygen scavenger;
wherein at least one of the first and second outer layers comprises a blend
of:
i) a polymer
ii) a siloxane having a viscosity of from 1 x 107 centistokes to 5
x 107 centistokes, and
iii) an antiblock agent;
wherein the kinetic coefficient of friction (film surface to film surface) of the
film is 0.5 or less (ASTM D 1894-99); and
wherein the average oxygen scavenging rate of the film is at least 20
cc/m2/day four days after an oxygen scavenging property of the film is
activated.
The Examiner relies upon the following references as evidence of
obviousness:
Peiffer US 5,681,650 Oct. 28, 1997
Hauenstein US 5,708,084 Jan. 13, 1998
Blinka US 5,834,079 Nov. 10, 1998
Mehta US 6,080,489 Jun. 27, 2000
Appellants' claimed invention is directed to a multilayer film
comprising first and second outer layers and an internal layer comprising an
oxygen scavenger. At least one of the outer layers comprises a blend of a
2
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