LAMINATED POROUS FILM, SEPARATOR FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a laminated porous film which has superior characteristics such as heat resistance, stretchability and communicative properties and has also the superior characteristics when used as a separator for non-aqueous electrolyte secondary batteries.

SOLUTION: The laminated porous film is obtained by layering a covering layer containing a filler (a) and a resin binder (b) on at least one side surface of a porous film of a polyolefin resin. The resin binder (b) is a glycol-modified thermoplastic resin.

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