FILM PRODUCTION APPARATUS, FILM ROLL PRODUCTION APPARATUS, FILM PRODUCTION METHOD, AND FILM ROLL PRODUCTION METHOD

摘要

An embodiment of the present invention prevents a defect from occurring in a joint portion, in a case where a film is produced by processing a film original sheet including the joint portion. A coating device carries out processing in different manners, respectively, for a joint portion of a first porous film original sheet and a second porous film original sheet and for portions other than the joint portion.