Method for fiber stock preparation

Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With chemical or physical modification of liberated fiber

Reexamination Certificate

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Details

C162S024000, C162S181100, C162S181400, C162S182000, C241S021000

Reexamination Certificate

active

10672817

ABSTRACT:
A method for the preparation of fiber stock for the production of paper or cardboard, including the steps of:a) Supplying fibers in the form of a suspension that has a predetermined solids content,b) Loading of the fibers with a precipitation product, without refining the stock,c) Refining of the fibers after completion of the loading process, in order to improve the freeness value and/or to alter the fiber characteristics, andd) Transporting of the fiber stock suspension in direction of the paper machine.

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Smook, G.A., Handbook for Pulp and Paper Technologists, Chapter 13, pp. 194-208 (1992).

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