| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method for a separator, which inhibits fall of powder resulting from the cutting of a laminated porous film.SOLUTION: In a method for manufacturing a separator by cutting a laminated porous film having, on one side of a porous base material layer containing polyolefin as a main constituent thereof, a filler layer containing inorganic particles as a main constituent thereof, and having on the other side of the porous base material layer, a resin layer containing resin particles as a main constituent, the film is cut from the filler layer side by means of a slit blade. |
