LAMINATE POROUS FILM MANUFACTURING METHOD

摘要

[Problem] To provide a process for manufacturing a laminated porous film in which wrinkling is suppressed and a covering layer is laminated on at least one surface of a polyolefin-based resin porous film. [Solution] A process for manufacturing a laminated porous film comprising layering a covering layer on at least one surface of a polyolefin-based resin porous film, wherein film tension (Ta) in a drying step is controlled at 40 N/m or less.