Appeal No. 94-2995
Application 07/976,827
The subject matter on appeal relates to a multilayer
metallized film comprising a substrate layer having a layer of a
polymer blend on at least one surface thereof. The blend
contains (a) a polyvinyl alcohol homopolymer or copolymer and (b)
a vinylidene chloride copolymer. The layer of this polymer blend
is effective to reduce transmission of oxygen and moisture. This
appealed subject matter is adequately illustrated by independent
claim 1 which read as follows:
1. A multilayer metallized film comprising
a substrate layer of oriented propylene homopolymer or
copolymer, capable of transmitting oxygen and moisture, wherein
the substrate layer has two surfaces at least one surface of said
polymer substrate layer having a layer of a blend of (a) a
polyvinyl alcohol homopolymer or copolymer and (b) a vinylidene
chloride copolymer, said layer of said blend being on at least
one of said two surfaces; and
wherein said layer of said blend is effective to reduce
transmission of said oxygen and said moisture.
The references relied upon by the examiner as evidence of
obviousness are:
Scopp 3,725,184 Apr. 3, 1973
Migliorini 5,153,074 Oct. 6, 1992
All of the claims on appeal are rejected under 35 USC § 103
as being unpatentable over Migliorini in view of Scopp.
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