| 摘要 |
A slitter device can provide a sheet-like article with a neat cut surface and causes less wear and chipping of blade edges to provide a cutting tool including the blades with a long service life. Specifically, to achieve the above, the slitter device uses round blades, or an upper blade and a lower blade having a difference in the hardness of approximately 10 or more in HRC. More specifically, for example, if one of the upper and lower blades is made of tool steel, the other is made of a superhard material or a ceramic material, and if one is made of a superhard material, the other is made of a ceramic material. |
