| abstract |
The present invention provides a film including, in at least a part thereof, a layer comprising an ethylene-based resin, which is a copolymer of ethylene and an α-olefin of 4 to 10 carbon atoms, and satisfies the following requirements (1) to (5) at the same time or an ethylene-based resin composition containing the resin;n (I) the melt flow rate at 190° C. under a load of 2.16 kg is in the range of 0.1 to 50 g/10 min, (II) the density is in the range of 875 to 970 kg/m 3 , (III) the ratio of a melt tension at 190° C. to a shear viscosity at 200° C. and an angular velocity of 1.0 rad/sec is in the range of 1.00×10 −4 to 9.00×10 −4 , (IV) the sum of the number of methyl branches and the number of ethyl branches, each number being based on 1000 carbon atoms and measured by 13 C-NMR, is not more than 1.8, and (V) the zero shear viscosity [η 0 (P)] at 200° C. and the weight-average molecular weight (Mw) as measured by a GPC-viscosity detector method (GPC-VISCO) satisfy the following relational formula (Eq-1):n n0.01×10 −13 ×Mw 3.4 ≦η 0 ≦4.5×10 −13 ×Mw 3.4 (Eq-1). |