Production of paper, board and cardboard

Details Production of paper, board and cardboard Production of paper, board and cardboard

1987-05-29

1988-09-20

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

162165, 1621682, 1621684, 1621685, 162180, D21H 302

Patent

active

047723599

ABSTRACT:
Paper, board and cardboard are produced by draining a pulp slurry in the presence of high molecular weight, water-soluble polymers of N-vinylamides as drainage aids, retention agents and flocculants. These polymers are particularly effective in a pulp slurry which has a high content of interfering substances and other phenolic compounds.

REFERENCES:
patent: 3036950 (1962-05-01), Martin
patent: 3081219 (1963-04-01), Drennen
patent: 3597314 (1971-08-01), Laube et al.
patent: 3926718 (1975-12-01), Guilbault et al.
patent: 4057533 (1977-11-01), Hort et al.
patent: 4144123 (1979-03-01), Scharf et al.
patent: 4167439 (1979-09-01), Killam
patent: 4305781 (1981-12-01), Langley et al.
patent: 4421602 (1983-12-01), Brunnmueller et al.
patent: 4444662 (1984-04-01), Burkert et al.
patent: 4444667 (1984-08-01), Burkert et al.
patent: 4644020 (1987-02-01), Stahl
Tappi Journal (1984), vol. 67, #9, Atlanta, GA "Filler and Fiber Retention . . . ".

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