| abstract |
The present invention relates generally to polymer films, and more specifically to polymer membranes, methods for making such membranes, and the use of such membranes as battery separator films. In certain embodiments, the present invention relates to a liquid permeable multilayer microporous membrane comprising a thin layer. According to the present invention, a liquid-permeable multilayer microporous membrane having excellent physical properties such as permeability can be obtained without peeling. |