Appeal No. 2004-2292
Application No. 09/747,537
The Examiner rejected claims 1-7, 9, 10, 13-18, and 30 under 35 U.S.C.
103(a) over the combined teachings of Schloegl and Blemberg. We affirm.
We select claim 1 as representative.
According to the Examiner, Schloegl teaches a shrink film which
comprises a plurality of polyolefinic layers. The base layer comprises 60-95
wt% polypropylene and 5-40 wt% of a hydrocarbon resin mixture. The
layers on each side of the base layer comprise polyolefinic sealable raw
materials (Answer, pp. 3-4). Schloegl discloses that suitable hydrocarbon
resins include styrene resins, cyclopentadiene resins, toluene, and their
hydrogenated derivatives (col. 3, line 23+). The Examiner asserts that the
film of Schloegl possesses a shrinkability of more than 15% in the transverse
direction and less than 6% in the longitudinal direction. 2 (Answer, p. 4).
According to the Examiner, Schloegl does not teach that the base layer
should comprise a polymeric modifier. However, Schloegl discloses “[i]n
order to further improve certain properties of the polyolefinic film
according to this invention, effective amounts of appropriate additives,
such as antistatic agents, slip agents or lubricants, may be contained in the
2 Appellants have not argued that the film of Schloegl does not possess
the property of greater than 20% overall area reduction shrinkage at 135oC.
(See Briefs generally).
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