セパレータ洗浄方法、セパレータ製造方法、およびフィルム洗浄方法

摘要

The present invention provides a washing method and the like suitable for a long and porous battery separator and a separator producing method including the washing method. The washing method of the present invention includes the steps of (i) transferring a separator in its longitudinal direction and (ii) washing the separator by causing the separator, which is being transferred, to sequentially pass through washing waters in washing tanks.