METHOD FOR PRODUCING OPTICAL FILM, OPTICAL FILM, POLARIZER, AND LIQUID CRYSTAL DISPLAY APPARATUS

摘要

A method for producing an optical film comprising a cutting step to form an optical film by cutting at least one end of a film (41) which is being transferred, in a direction perpendicular to the transferring direction, and separating an end film (46) which has been cut out; and a transferring step to introduce the separated end film (46) into a pipe (43) and transfer the end film in the pipe (43) by wind transportation, wherein in the transferring step, a wind velocity of the wind used in the wind transportation is increased from the upstream side toward the downstream side of the pipe.