Patent ID: 6179964
Filing Date: 2001-01-30
Classification: D21G,Y10S

Abstract:
A paper quality control device for controlling at least one of the cross-machine direction profile and the machine direction profile of at least one quality feature of a paper web as it is being produced in a paper making machine, the paper quality control device comprising:a controller for receiving signals from a sensor and for driving and controlling an actuator; least one actuator which is connected with the controller and is operable by the controller for influencing at least one of the cross-machine direction profile and the machine direction profile of the at least one quality feature of the web;at least a first sensor adapted to and positioned for picking up a first measured signal of at least one of a first cross-machine direction profile and a first machine direction profile of a first quality feature of the paper web, the first sensor being connected with the controller for supplying a first signal to the controller;at least a second sensor spaced from the first sensor in the machine direction adapted for picking up a second measured signal of a second cross-machine direction profile and a second machine direction profile of a second quality feature of the web, the second sensor being connected with the controller for supplying a second signal to the controller;the controller receiving signals from the first and second sensors and being adapted to drive the actuator to adjust or control at least one of the cross-machine direction and machine direction profiles of the one quality feature of the web.