System and process for continuous determination of paper strength

Abstract From the Canadian patent

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 …