Appeal 2007-1890
Application 10/444,624
comprising a polymer; and an oxygen barrier layer disposed between the
internal layer and one of the first and second outer layers, where the oxygen
barrier layer has a specified oxygen transmission rate (Br. 7). Independent
claim 1 is illustrative of the invention and a copy of this claim is reproduced
below:
1. A multilayer film comprising:
a) a first outer layer comprising a blend of
i) a polymer, and
ii) an antifog agent;
b) an internal layer comprising an oxygen scavenger;
c) a second outer layer comprising a polymer; and
d) an oxygen barrier layer, disposed between the internal layer
comprising the oxygen scavenger, and one of the first and second
outer layers, the oxygen barrier layer having an oxygen
transmission rate of no more than 100 cc/m2/24hr at 25°C, 0% RH,
1 atm (ASTM D 3985); wherein the antifog agent comprises a
material selected from the group consisting of:
i) glycerol fatty acid ester,
ii) polyglycerol fatty acid ester,
iii) polyethylene glycol fatty acid ester,
iv) polyethylene glycol alkyl ether,
v) ethoxylated alkyl phenol,
vi) sorbitan ester,
2
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Last modified: September 9, 2013