| abstract |
PROBLEM TO BE SOLVED: To provide a porous film which has excellent thickness uniformity and adhesiveness, is flexible, and has a good texture, and a method for producing the same. SOLUTION: The melt index is 0.5 to 10 g /. 70 to 98% by weight of an ethylene / α-olefin copolymer having a density of 0.890 to 0.945 g / cm 3 in 10 minutes And a polyethylene-based resin (A) containing 2 to 30% by weight of a branched low-density polyethylene having a melt index of 0.1 to 10 g / 10 minutes and a density of 0.910 to 0.927 g / cm 3 , and 25 to 50% by weight. %, And inorganic filler (B) 50-75% by weight and (A) and (B) 10 A porous film comprising 0.5 to 8 parts by weight of at least one additive selected from ricinoleic acid condensate and hydrogenated ricinoleic acid condensate with respect to 0 parts by weight. |