Patent ID: 6562196
Filing Date: 2003-05-13
Classification: D21H,Y10S

Abstract:
A method for optimizing the degree of flocculation in layers in a multi-layer headbox (P2), wherein by means of a detector (R1) of flocculation, the degree of flocculation is measured continuously from each stock flow (M2, M3, M4) which is passed into a headbox (P2), and a signal is transmitted from the detector (R1) to a regulator (H1) which regulates the metering of retention agent (10) and/or fillers (11) and/or auxiliary chemicals (12) into the stock flow(s) (M2, M3, M4) continuously on the basis of the signal to an optimal level, wherein regulating the metering of retention agent (10) and/or fillers (11) and/or auxiliary chemicals (12) into said each stock flow is performed prior to the passing of said each stock flow into said headbox.