Production of paper

Details Production of paper Production of paper

1994-07-06

1996-05-07

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

1621643, 1621681, 1621682, 1621683, 1621816, 1621818, 162183, D21H 2110

Patent

active

055142494

ABSTRACT:
Paper is made by adding nonionic or anionic polymeric retention aid to a suspension that contains a high electrolyte content, shearing the flocculated suspension, aggregating the sheared suspension by adding anionic particulate material (especially bentonite), and draining the suspension.

REFERENCES:
patent: 3052595 (1962-09-01), Pye
patent: 4305781 (1981-12-01), Langley et al.
patent: 4388150 (1983-06-01), Sunden et al.
patent: 4643801 (1987-02-01), Johnson
patent: 4749444 (1988-06-01), Lorz et al.
patent: 4753710 (1988-06-01), Langley et al.
patent: 4795531 (1989-01-01), Sofia et al.
patent: 4913775 (1990-04-01), Langley et al.
patent: 5032227 (1991-07-01), Derrick et al.
patent: 5234548 (1993-08-01), Hatton

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