Method and device for tracking the edge of a web

Details Method and device for tracking the edge of a web Method and device for tracking the edge of a web

2006-01-24

2006-01-24

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Sheet, woven fabric or fiber

Reexamination Certificate

active

06988398

ABSTRACT:
A method and a device for tracking the position of the edge of a moving web (12), such as a fabric or a web of a paper machine, in which method a pressure-sensitive sensor element (14) is disposed in/onto the surface of the roll (10) guiding the web (12), which sensor element reacts to the pressure applied to it by the moving web (12) by producing an electric signal, on the basis of which it is possible to determine the exact position of the edge of the web (12) on the roll (10). The band-like sensor element (14) comprises one single sensor strip or several sensor strips (141. . . 14n) disposed successively in the band.

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