D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
92/15
D21F 9/02 (2006.01) D21F 1/00 (2006.01) D21F 1/46 (2006.01)
Patent
CA 1068143
ABSTRACT OF THE DISCLOSURE An improved method for manufacturing paper utilizing an improved Fourdrinier paper making machine, as well as an apparatus for improving the efficiency of the machine, while producing paper of improved quality. The present invention overcomes the drawbacks associated with the conventional paper making machines in that the improved method and apparatus permits the use of a higher consis- tency of pulp stock supplied at the upstream end of the forming section of the machine, resulting in reduced water consumption and smaller pumps and associated piping. The apparatus comprises shear means situated above an upper surface of a top run of a Fourdrinier fabric such that a lower portion of the shear means is adapted to penetrate a pulp stock web situated on the Fourdrinier fabric. The shear means is operated by an external source of power, the source of power adapted to drive the shear means at a sur- face speed exceeding a linear speed of the fabric by greater than 3% and less than 8% of the speed of the fabric. The shear means is situated at a location where a consistency of the pulp stock web situated on the fabric is between 2% and 5 1/2%; and the shear means adapted to provide a shearing action to fibre bundles and flocs situated in the pulp stock web as the pulp stock web passes between the shear means and the fabric, there re-working the pulp stock web and re-forming the fibre network and smearing the flocs thereof.
277020
Hansen Victor E.
LandOfFree
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