Patent ID: 7049361

Claim:
A polyolefin series resin film comprising polyolefin and polyolefin wax wherein the polyolefin [A] has a weight average molecular chain length of 2850 nm or longer and a density ρ 1 (g/cm 3 ), the polyolefin wax [B] has a weight average molecular weight of 700–6000 and a density ρ 2 (g/cm 3 ), the polyolefin and the polyolefin wax are incorporated at [A]/[B]=90/10–50/50 (ratio by weight), and the densities ρ 1 and ρ 2 satisfy the following conditions: 0.92≦ρ1≦0.94 0.91≦ρ2≦0.93 −0.01≦(ρ1−ρ2)≦0.03.