Method and equipment for controlling properties of paper

Details Method and equipment for controlling properties of paper Method and equipment for controlling properties of paper

D - Textiles, Paper

21

F

D21F 1/06 (2006.01) D21H 23/12 (2006.01) G01N 33/34 (2006.01)

Patent

CA 2311322

The invention relates to an improved method and equipment for controlling properties of paper, which method comprises modelling the effect of the flow of retention agent (Fra) both on the amount of filler in the white water and on the paper ash content (ASH), and the effect of the flow of filler (Ffi) both on the paper ash content (ASH) and on the amount of filler in the white water. The fulfilled modelling is used to adjust the amount of filler in the white water and the paper ash content (ASH) by controlling simultaneously the flow of retention agent (Fra) and the flow of filler (Ffi).

Cette invention concerne un procédé et un appareil permettant de réguler les propriétés du papier, lequel procédé consiste à modéliser l'effet du débit d'un agent de rétention (Fra) tant sur la quantité de matière de charge dans l'eau blanche que sur le contenu en cendres (ASH) du papier. Ce procédé consiste également à modéliser l'effet du débit de matière de charge (Ffi) tant sur le contenu en cendres (ASH) du papier que sur la quantité de matière de charge dans l'eau blanche. Une fois achevée, cette modélisation est utilisée afin d'ajuster la quantité de matière de charge dans l'eau blanche ainsi que le contenu en cendres (ASH) du papier, ceci en régulant simultanément le débit de l'agent de rétention (Fra) et le débit de la matière de charge (Ffi).

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