Transforming Art into Science

Finding the cut point

Slitter geometry determines the location of the cut point (Figure 6). The designs are different for wrap slitting and tangent slitting. In wrap slitting—typically used with materials that require additional support throughout the slitting process—the web is wrapped around the lower anvil section and is supported throughout the process. There is a small gap in the anvil to allow the upper knife, which is placed above the center of the shaft, to penetrate below the web line. The web material is deflected around the top blade after being slit.