Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Simultaneous mechanical defibration and chemical treatment
Patent
1976-03-22
1977-04-12
Bashore, S. Leon
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Simultaneous mechanical defibration and chemical treatment
162 27, 162261, 241 15, 241 28, 241 43, 241 62, 241280, 241296, B02C 2318, B02C 712, D21B 116, D21B 126
Patent
active
040173569
ABSTRACT:
An improved apparatus and method for manufacturing ground wood pulp from ligno-cellulose containing wood block material by forcing the block material to be ground against the end surface of a rotatably mounted grinding disc which has projecting grinding means in the shape of elevations or ridges located on the disc end surface which define grooves directed towards the end surface circumference. The apparatus includes a pressure plate for pressing the block material along a longitudinal side against the disc end surface with the fibers directed outwardly from the center of the grinding disc and toward the periphery of circumference of the disc while the fibers are separated. In this manner the fibers are oriented in the same direction as the edges of the elevations or ridges which carry the fibers radially outward and the elevation edges engage the block fibers under a movement component which is transverse to the longitudinal direction of the fibers. The elevations may be straight or radial ridges or bars arranged along the radii of the end surface. Increased fiber releasing capacity and delivery of pulp of greater uniformity and improved quality can be obtained by this apparatus.
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patent: 3815834 (1974-06-01), Gilbert
Bashore S. Leon
Defibrator AB
Fisher Richard V.
Munson Eric Y.
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