Patent ID: 8763526
Filing Date: 2014-07-01
Classification: B26D,B26F,B65H

Abstract:
1. An apparatus for perforating a web having a Z-direction, comprising: a mechanical perforator for perforating the web at each of a plurality of discrete locations where the web is to be mechanically perforated, said mechanical perforator causing fibers comprising the web to move apart and deflect in said Z-direction of said web; a device for printing a liquid weakener onto the web in one or more locations at or near where the web is to be mechanically perforated; the liquid printing device being located at least in close proximity to the web for printing the liquid weakener onto the web before or after the web has been mechanically perforated; a supply of the liquid weakener for printing onto the web at each of the one or more locations at or near where the web is to be mechanically perforated; a device for transporting the web past the mechanical perforator and the liquid printing device for mechanically perforating and printing the liquid weakener onto the web; and a controller for controlling the mechanical perforator for mechanically perforating the web at each of the discrete locations where the web is to be mechanically perforated and for controlling the liquid printing device for printing the liquid weakener onto the web at each of the one or more locations at or near where the web is to be mechanically perforated to thereby form perforations in the web.