Biaxially-oriented multi-layer films

摘要

There is provided a biaxially-oriented multi-layer film comprising: a substrate layer comprising as a main component a crystalline propylene polymer; and a layer of a composition laminated on at least one surface of the substrate layer, the composition comprising the following components A, B and C: component A: 100 parts by weight of a propylene random copolymer, component B: 0.05 to 0.6 parts by weight of inorganic or organic fine particles having an average particle diameter of 0.5 to 5 mu m, and component C: 0.5 to 10 parts by weight of a polypropylene modified with an acid, having a number-average molecular weight of 800 to 20,000.