| abstract |
The present invention provides a biaxially stretched polypropylene film that is useful for a separator film as a protective material and has excellent peelability. A biaxially stretched polypropylene film in which an A layer and a B layer are laminated, wherein the A layer comprises a propylene-based polymer, a 4-methylpentene-1 polymer, 20 to 50% by mass, and 1- It is formed from a resin composition containing 0.1 to 5% by mass of a butene polymer, and the B layer is formed from a resin composition containing a propylene polymer. [Selection figure] None |