Perforating device for use on e.g. paper web in printing machine, has groove that is formed on support element, and into which perforation wheel is partly inserted without being contacted by perforation wheel

摘要

A path (4) e.g. paper web runs at a given rate, v, in the longitudinal direction (A) between a perforation wheel (2) and a support element (1). The support element has a groove into which the perforation wheel is partly inserted, without the perforation wheel contacting the groove.