Patent ID: 8623178

Claim:
A slitting-material slitting apparatus comprising: a rotatable male blade; a female blade that is provided below the male blade so as to be capable of rotating about a rotation axis aligned with the rotation axis direction of the male blade, and is provided so as to face a blade tip portion of the male blade along the male blade rotation axis direction; and a wrap section that is configured to wrap a slitting-material around the female blade such that the slitting-material makes contact with the female blade on a coated layer side of the slitting-material, which includes a support body with a coating layer on the support body, the coating layer being harder than the support body; wherein the relative position of the male blade and the female blade are determined such that the male blade slits the slitting-material in a state in which the coating layer is wrapped against the female blade by the wrap section and in contact with the female blade, wherein a blade tip angle of the male blade as viewed from the rotation direction of the male blade is 15° to 30°, and wherein a blade tip portion of the male blade is provided with a secondary blade that, when viewed from the rotation direction, has a rotation axis direction thickness of 10 μm to 50 μm and a blade tip angle of 60° to 85°.