Appeal No. 2002-0983
Application No. 09/399,890
polyacetate, is critical to ensure the adhesion of the extrusion
coated breathable polymer onto the substrate. (Column 3, lines
29-54.)
In contrast to the invention recited in the appealed
claims, Doyle does not describe “a layer of a thermoplastic
resin blended with a high temperature volatile particulate,”
i.e. layer c).
Topolkaraev discloses a microlayer polymer film useful for
making flushable personal care items comprising a plurality of
coextruded microlayers including a non-degradable layer
comprising a non-water degradable, melt-extrudable polymer and a
degradable layer comprising a water-degradable, melt-extrudable
polymer. (Column 1, lines 44-59.) Topolkaraev further teaches
that both the water degradable and non-water degradable layers
may include a particulate filler material to enhance the water
vapor permeability of the film. (Column 7, line 40 to column 8,
line 18.)
The examiner’s basic position is that the particulate
filler described in Topolkaraev is a “high temperature volatile
particulate” as recited in the appealed claims and that “it
would have been obvious to add the filler of Topolkaraev et al.
to the primer layer of Doyle et al. motivated by the desire to
enhance the water vapor permeability of the laminate composite
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