Method for the contact-free continuous measurement and monitorin

Coating processes – Measuring – testing – or indicating – Thickness or uniformity of thickness determined

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Details

427 9, 365 51, 365 72, 324212, G01B 704, G01B 1104

Patent

active

042763240

ABSTRACT:
The invention relates to a method of contact-free, almost continuous measurement and monitoring of the width, thickness and position of magnetic tracks on moving film strips within wide limits of the speed. The track width and track position of the magnetic tracks are measured optically and the magnetically acting track cross section is measured electromagnetically via the track volume. The measured values are together recorded, evaluated and displayed and/or used for recontrolling the casting arrangement for emitting warning signals or for stopping the coating machine.

REFERENCES:
patent: 2751313 (1956-06-01), Speed et al.

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