Invention Grant
US06945922B2 System for cutting a moving web in the cross direction to form sheets of a given length at high web speeds 有权
用于在横向上切割移动幅材的系统,以在高幅面速度下形成给定长度的纸张

System for cutting a moving web in the cross direction to form sheets of a given length at high web speeds
Abstract:
A system, apparatus and method is provided for perforating a web such as a paper tissue or paper toweling into distinct and perforated sheets. The invention provides a laser array capable of providing an incident beam of light upon the surface of the web. The web travels at relatively high speed on a web support mechanism. The web is contacted by the laser light source, which is directed at predetermined locations upon the web to provide a perforation or severing of the web. The employment of a laser in the practice of the invention provides the ability to precisely measure and vary the length of the perforations along the web in a more efficient manner, for a precise cut.
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