Perforation rule for rotary cutting system

摘要

The invention provides a perforation cutting rule for a rotary cutting machine and method of operating the same. The cutting rule (30) has a length, height and thickness and includes a plurality of dovetail-shaped gaps formed along a longitudinal edge to define a plurality of dovetail-shaped cutting teeth (34). Each tooth (34) includes an outer cutting end (33) and an inner base end (35), the outer cutting end (33) having a length greater than an inner base end (35). As the cutting end (33) cuts through multiple sheets the angled sides (36) of the dovetail-shaped teeth (34) provide a relief area to prevent the sheets from bunching or pulling against the teeth (34) during the cutting operation.