Patent ID: 6945922
Filing Date: 2005-09-20
Classification: B23K

Abstract:
1. A system for perforating a web, the system comprising: (a) a web conveying means adapted for supporting and conveying a web, the web having a cross direction bounded by a first edge and a second edge, the web being adapted for travel upon the surface of the web conveying means; (b) a frame; and (c) at least three lasers mounted upon the frame in an array across the web from the first edge to the second edge, the plurality of lasers being adapted for directing a beam of light upon the surface of the running web to form severed portions that form a perforation in the cross direction of the web, the perforation comprising severed portions and bonded portions in alternating sequence, wherein the lasers provide light beams upon the web at an angle that deviates from the cross direction, but results in a severed portion that is oriented in the cross direction.