POROUS FILM, SEPARATOR FOR NON-AQUEOUS ELECTROLYTE CELL AND NON-AQUEOUS ELECTROLYTE CELL

摘要

PROBLEM TO BE SOLVED: To provide a porous film having improved handling property in winding by imparting the film with desired rigidity to give stiffness while keeping good gas permeability, and having low elongation under load and excellent heat resistance. SOLUTION: A film composed of a resin composition containing (A) a resin composed of a high-density polyethylene resin and an amorphous thermoplastic resin and (B) a filler having an average particle diameter of 0.1-25μm is drawn to form pores. The strength and tensile elastic modulus are increased by the compounding of the amorphous thermoplastic resin. COPYRIGHT: (C)2006,JPO&NCIPI