Knife arrangement used for cutting paper, cardboard, plastic woven material and metal comprises circular knives rotating against each other and a counter knife

摘要

Knife arrangement comprises two circular knives (1, 2) rotating against each other (lower knife and upper knife) and a counter knife. A diamond or boron nitride layer is provided in the lower knife and the diamond or boron nitride grains are welded to plastic or other materials. The upper circular knife is sharpened on the lower knife during cutting by the diamond or boron nitride.