Patent ID: 8056455
Filing Date: 2011-11-15
Classification: B26D,B26F,Y10T

Abstract:
1. A method of die cutting comprising: providing a web material having a first side and an oppositely disposed second side; moving the web material along a web material path; providing at least one web indicia on one of the first side and the second side of the web material; providing a web sensor for sensing the at least one web indicia located on the web material; moving the web material past the web sensor; providing a rotary cutting roller and a cooperating anvil roller, the rotary cutting roller having a first end surface and a second end surface, and a circumferential surface, the rotary cutting roller being further providing with at least one indicia on the first end surface and at least one cutting knife on the circumferential surface, wherein the location of said at least one indicia on the first end surface corresponds to the circumferential placement of said at least one cutting knife; providing an end sensor for sensing the at least one indicia located on the first end surface of the rotary cutting roller; providing an encoder for sensing anvil roller rotational movement; providing a nip between the rotary cutting roller and anvil roller; moving the web material through the nip between the rotary cutting roller and anvil roller whereby a predetermined die cutting configuration is cut in the web material; and providing a processor for receiving and processing data from the web sensor, the end sensor, and the encoder and adjusting the rotational movement of the rotary cutting roller.