Method and apparatus for die cutting a web

Details Method and apparatus for die cutting a web Method and apparatus for die cutting a web

2004-07-29

2010-02-16

Alie, Ghassem (Department: 3724)

Cutting

With means to monitor and control operation

Including means to compensate tool speed for work-feed...

C083S298000, C083S312000, C156S250000, C156S256000, C156S259000, C156S353000, C156S510000, C156S519000

Reexamination Certificate

active

07661344

ABSTRACT:
A method and apparatus for producing shaped articles from a web material is disclosed. The apparatus generally includes a rotary cutting roller, preferably including indicia on an end surface, and an anvil roller operating in cooperating rotational movement with the rotary cutting roller. The apparatus die cuts web material into predetermined shapes. The apparatus further includes at least one sensor for detecting rotational movement of the rotary cutting die by way of the indicia on the end surface of the rotary cutting roller. The information from the at least one sensor and an encoder is processed and translated to drive means to thereby corrects variation in web alignment relative to the rotary cutting roller. The adjustment of the rotary cutting roller of the present invention allows the rotary cutting roller to cut within a high degree of accuracy and precision.

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