Patent ID: 6174413
Filing Date: 2001-01-16
Classification: B25J,D21G,G05B,Y10S

Abstract:
A device for detecting a change in a fiber orientation cross-direction profile in at least one position in a paper or cardboard web in the manufacturing process on a paper or cardboard manufacturing machine, comprising:at least one sensor having an evaluation unit for determining a chronological course of a basis weight in a traveling direction of the web in at least one position with regard to a width of the machine;at least one determining unit for determining at least one of a change speed and a relative change speed of the basis weight in said at least one position with respect to the width of the machine;at least one comparing unit for comparing the change speed to a predetermined value raster for determining if the change speed can correspond to a change in the fiber orientation cross-direction profile; and,an output device for indicating a change in the fiber orientation cross-direction profile.