Appeal No. 1997-1516
Application No. 08/326,501
(a) a paper substrate having a front side and a
back side;
(b) a polypropylene coating layer located on
said front side of said paper substrate; and
(c) a protective sealant layer selected from the
group consisting of a soap based acrylic resin,
polyvinylidene dichloride and polyvinyl alcohol
located on said back side of said paper
substrate.
2. A release liner comprising:
(a) a paper substrate having a front side and a
back side;
(b) a polypropylene coating layer located on
said front side of said paper substrate;
(c) a silicone coating layer located on said
polypropylene coating layer; and
(d) a protective sealant layer selected from the
group consisting of a soap-based acrylic resin,
polyvinylidene dichloride and polyvinyl alcohol
located on said back side of said paper
substrate.
In the rejection of the appealed claims the examiner
relies upon the following references:
Groff et al. (Groff) 3,118,534 Dec. 16,
1959
Keeling et al. (Keeling) 3,896,249 Jul.
22, 1975
Hosoda et al. (Hosoda) 4,609,589 Sep. 02,
1986
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