OPTICAL FILM CUTTING END MILL AND OPTICAL FILM PRODUCTION METHOD USING SAID END MILL

摘要

Provided is an end mill that can suppress cracks, yellow bands, adhesive loss, and fluff, when performing an optical film cutting process. This optical film cutting end mill comprises a main body that rotates about a rotation axis, and a cutting blade protruding from the main body so as to constitute the outermost diameter. The cutting blade has a twist angle of 0°, and a rake angle of 5° to 45°. The optical film production method of the present invention includes using the optical film cutting end mill to perform the cutting process at an end surface of the optical film.