Patent ID: 6884836

Claim:
A polyolefin based resin film wherein a polyolefin [A] having a weight average molecular chain length of 2850 nm or more and a polyolefin wax [B] having a weight average molecular weight of 700 to 6000 have been compounded in a ratio of [A]/[B]=90/10 to 50/50 (by weight) as the resin component, and 10 to 300 parts by weight of inorganic fillers have been added to 100 parts by weight of the resin component wherein the density ρ1 (g/cm 3 ) of said polyolefin [A] and the density ρ2 (g/cm 3 ) of said polyolefin wax [B] are in the following relationship: 0.92≦ρ1≦0.94 0.91≦ρ2≦0.93 −0.01≦(ρ1−ρ2)≦0.03.