Patent ID: 7589162

Claim:
A polymer composition comprising: a copolymer of ethylene and an alpha-olefin comonomer, wherein the alpha-olefin comonomer comprises propylene, 1-butene, 1-pentene, 1-hexene, 3-methyl-1-butene, 4-methyl-1-pentene, 1-heptene, 1-octene, 1-nonene, 1-decene, or combinations thereof; a density equal to or greater than about 0.947 g/cc; a high load melt index from about 1 g/10 min to about 30 g/10 min; and a tensile natural draw ratio less than about 14157ρ-12958, where ρ is the density (g/cc) of the composition, wherein the tensile natural draw ratio is determined in accordance with ASTM D 638-00 at room temperature using a crosshead speed of 51 mm/min, and wherein the polymer composition comprises a metallocene polyethylene.