SEPARATION MEMBRANE HAVING HIGH TENSILE STRENGTH, MANUFACTURING METHOD THEREFOR, AND SECONDARY BATTERY COMPRISING SAME

摘要

The present invention relates to a method for manufacturing a separation membrane for batteries, a separation membrane manufactured by the method, and a secondary battery comprising the separation membrane. More specifically, the present invention relates to a method for manufacturing a separation membrane having enhanced tensile strength by performing a shutdown process stopping a stretch during a process of stretching a base film of the separation membrane.