Method and apparatus for manufacturing paper and boards

Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste

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162261, 241 4617, 366219, 366185, D21B 132, D21C 502

Patent

active

046220992

ABSTRACT:
A method is provided for manufacturing an end product such as, for example, paper or board from a fibrous base material such as waste paper. The method includes the steps of introducing into a pre-soaking device the fibrous base material and admixing such base material with a sufficient predetermined quantity of water to form a fibrous mixture. Controlled amounts of the mixture are thereupon introduced into a pulper and admixed with a quantity of water greater than the quantity of water introduced into the pre-soaking device so as to form a fibrous suspension. The fibrous suspension is then transported to a subsequent processing station for further processing into the desired end product.
The pre-soaking device includes a mixing container, preferably a cylinder, mounted on a support frame and adapted to be tilted so as to discharge a variable amount of mixture from the cylinder as a function of the angle of inclination of the cylinder. The support frame is adapted to tilt the cylinder downwardly at its discharge end for delivery of the mixture to a conveyor belt for transmittal to a pulper. The support frame includes carrying rollers to permit the cylinder to be rotated in order to agitate and mix the mixture.

REFERENCES:
patent: 1674989 (1928-06-01), Powell
patent: 3752445 (1973-08-01), Nowak
patent: 4194968 (1980-03-01), Pfalzer et al.
patent: 4385997 (1983-05-01), Strudal
patent: 4397713 (1983-08-01), Lambrecht
patent: 4465591 (1984-08-01), Holz et al.

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