Patent ID: 6053040
Filing Date: 2000-04-25
Classification: D21G

Abstract:
A system for monitoring a wet line of a wet continuous, moving web of paper formed by depositing wet pulp on a forming fabric of a paper making machine in a paper making process and subjecting said deposited pulp to a vacuum to increase a rate of water drainage from said deposited pulp and for controlling the paper making machine or paper making process to enhanced uniformity of drying, said system comprising:at least one observing means for collecting an image of a portion of said web comprising the wet line of said web and transmitting a digital image of said portion of the web;computer means for receiving said digital image and for discerning from said digital image an actual profile of said wet line of the web;comparator means for comparing said discerned actual profile of said wet line of said web and predetermined ideal profile of said wet line; andmeans for modifying an operation of said machine or said process to reduce the differences between said actual profile of wet line and said ideal profile of said wet line when said differences exceed a certain amount.