Appeal No. 1996-0328
Application 08/060,891
c. The Warren patent
Warren describes thermoplastic packaging films that contain a polymer formed from ethylene and
“one or more alpha olefins.” The ethylene and an alpha olefin polymer is described as having a density19
3 3 20
of about 0.911 g/cm to about 0.935 g/cm . The polymers are described as linear low density
polyethylene polymers (LLDPE). The described LLDPE polymers contain ethylene and at least one21
higher alpha olefin. The described higher alpha olefins include butene-1, hexene-1, pentene-1, and22
octene-1. The melt flow ratio is described as the I /I ratio which is the melt flow ratio of condition23
10 2
190/10 to condition 190/2.16 as per ASTM D 1238. Warren teaches the films can be manufactured into24
25 26
shrink (i.e. oriented) films. Warren teaches the films to have good abuse resistance.
d. The Machon patent
Machon describes the production of copolymers of ethylene and “at least one” C or greater alpha
4
27 3 3 28
olefin. The polymers have densities ranging from 0.905 g/cm up to 0.940 g/cm . Machon teaches the
19Warren, column 2, lines 21-22.
20Warren, column 4, lines 16-17.
21Warren, column 2, lines 63-67.
22Warren, column 3, lines 59-62.
23Warren, column 3, lines 62-65.
24Warren, column 23, lines 26-35.
25Warren, column 4, lines 44-48.
26Warren, column 2, lines 37-42.
27Machon, page 4, lines 3-5.
28Machon, page 4, lines 5-7.
6
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