Drilling with multiple orifu00eccio selective or double online automated

摘要

"Drilling with orifu00eccio multiple or dual selective automated line.A device for improved and more efficient, and a method for the creation of multiple holes drilling, during a process of loose leaf paper and of other materials in sheet.A feature of the present invention is the ability to select between at least two configurations of drilling holes automatically, without manual adjustment and "in motion".Without interruption of the sheet or the paper flow.The perforation of film improved comprises two rotating drilling regulated in different angles, so that when an intercept the path of the sheet,The other is outside of the path of the sheet. The rotation speed is controlled so that the drilling non selected intercept the path of the sheet into a space between pitches.