METHOD AND APPARATUS FOR MANUFACTURING OPTICAL FILM, OPTICAL FILM, POLARIZING PLATE, AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To prevent the contact of the film present in a stretching section with the heater arranged in the stretching section at the time of break of the film.

SOLUTION: An optical film manufacturing method includes a process for stretching the film F between a heating roll 32 and a stretching roll 33 while feeding the same, a process for detecting the break of the film F present on a feed route and a process for preventing the contact of the film F present in the stretching section between the heating roll 32 and the stretching roll 33 with the heater 37 arranged in the stretching section when the break of the film F is detected.

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