Process for the manufacture of a paper or a cardboard having imp

Details Process for the manufacture of a paper or a cardboard having imp Process for the manufacture of a paper or a cardboard having imp

1993-06-02

1995-02-28

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

1621816, 1621818, 162183, D21H 1745

Patent

active

053933818

ABSTRACT:
Process for the manufacture of a paper or a cardboard having improved retention, in which a polyacrylamide and bentonite are added to the fibrous suspension, wherein in that the polyacrylamide is a branched polyacrylamide, which is easily soluble in water, and is introduced in the dissolved powder form at a concentration of 0.03 to 1.0 per thousand (0.03 to 1.0%) by weight of the dry weight of the fibrous suspension.

REFERENCES:
patent: 2368635 (1945-02-01), Booth
patent: 3052595 (1962-09-01), Pye
patent: 4305781 (1981-12-01), Langley et al.
patent: 4749444 (1988-06-01), Lorz et al.
patent: 5126014 (1992-06-01), Chung
patent: 5178730 (1993-01-01), Bixler et al.

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