| abstract |
The present invention provides a laminated porous film and a nonaqueous electrolyte secondary battery. Wherein the laminated porous film is a laminated porous film in which a heat resistant layer containing a binder resin and a filler is laminated on one side or both sides of a base porous film comprising a polyolefin as a main component, wherein at least one present portion of the binder resin and the filler, The total thickness of the porous film is set to be in contact with the heat resistant layer and the total thickness of the porous film is 1% to 20% of the total thickness of the base porous film. The nonaqueous electrolyte secondary battery includes the laminated porous film as a separator. |