Method and apparatus for guiding a web of paper or board web during manufacture
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United States of America Patent
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Apr 22, 2003
Grant Date -
N/A
app pub date -
Mar 30, 2001
filing date -
Aug 19, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Method and apparatus for guiding a web of paper or board or, alternatively, an edge strip sheared therefrom, in a paper machine or finishing equipment, the method being particularly suited for threading the web tail or edge strip through the machine in conjunction with a production shutdown or after a web break. According to the invention, the web (6) or its tail sheared from the web so as to form an edge strip is supported electrically by means of taking surfaces or electrodes (3, 5) disposed on opposite sides of the web (6) to different potentials. Particularly advantageously, the web (6) or the edge strip can be adhered to a roll (16), a belt (7) or a wire by taking said support element to a lower potential and disposing a higher-potential electrode (5) or a number of electrodes to the opposite side of the web.
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