Process for the production of paper

Details Process for the production of paper Process for the production of paper

1989-01-24

1992-07-07

Dang, Thi

Paper making and fiber liberation

Processes and products

Non-fiber additive

162175, 1621811, 1621812, 1621813, 1621815, 1621816, 162183, 162185, D21H 320, D21H 378

Patent

active

051279940

ABSTRACT:
A process for the production of paper by forming and dewatering a suspension of cellulose containing fibres, and optional fillers, on a wire. The forming and dewatering is carried out in the presence of a combination of an aluminum compound, a cationic retention agent and a polymeric silicic acid having a high specific surface area. The combination of substances improves dewatering and retention of fines and fillers.

REFERENCES:
patent: 4294885 (1981-10-01), Sunden
patent: 4388150 (1983-06-01), Sunden et al.
patent: 4643801 (1987-02-01), Johnson
patent: 4710270 (1987-12-01), Sunden et al.
patent: 4750974 (1988-06-01), Johnson
patent: 4927498 (1990-05-01), Rushmere

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