Measurement of the properties of a web in paper production
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United States of America Patent
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Jul 10, 1990
Grant Date -
N/A
app pub date -
Dec 8, 1988
filing date -
Sep 22, 1987
priority date (Note) -
Expired
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Abstract
Variations in the properties of a continuously running web are measured by reciprocating the scanning device across the web. The movement of the scanning device is so time controlled that this movement is out of phase with the variation in the paper properties in the machine direction of the web.
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