System and process for continuous determination and control of paper strength
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United States of America Patent
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Apr 14, 1992
Issued Date -
N/A
app pub date -
Apr 17, 1990
filing date -
Oct 5, 1987
priority date (Note) -
Expired
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Abstract
A system and process for continuously determining the strength of paper sheet material during manufacture includes a plurality of sensors for detecting proxies related to properties such as the strength of individual fibers, length distribution of fibers, quantity of fibers, distribution of fibers, orientation of fibers, number of bonds between fibers, and bond strength of fibers. For a given papermaking machine and paper type, multiple regression analysis is used to determine correlations between the measured proxies and laboratory tests of paper strength. Then, during operation of a papermaking machine, changes in the proxy measures are used to indicate paper strength and to adjust operation of the papermaking machine based upon changes in the strength of sheet material being produced.
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