Device and method for calibrating a non-destructive sheet strength measuring system
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United States of America Patent
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May 12, 1992
Issued Date -
N/A
app pub date -
Mar 21, 1991
filing date -
Jan 22, 1988
priority date (Note) -
Expired
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Abstract
A running blade is adapted to move at the same speed as a continuously running sheet and to generate a burst perforation through the sheet. The force exerted by the blade against the sheet is measured and used to calibrate a non-destructive sheet strength sensor.
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