Production of paper and paper board

Details Production of paper and paper board Production of paper and paper board

1997-11-28

2000-05-16

Fiorilla, Christopher A.

Paper making and fiber liberation

Processes and products

Non-fiber additive

1621641, D21H 1100, D21H 1300

Patent

active

060632402

ABSTRACT:
Paper or paper board is made by adding cationic polymeric retention aid to a cellulosic supension, shearing the suspension to degrade the resultant flocs, aggregating the suspension by adding an aqueous composition of bentonite or other anionic bridging coagulant in the presence of anionic dye, pigment or optical brightening agent, and forming paper from the aggregated suspension.

REFERENCES:
patent: 4753710 (1988-06-01), Langley et al.
patent: 4824523 (1989-04-01), Wagberg et al.
patent: 4913775 (1990-04-01), Langley et al.
patent: 4969976 (1990-11-01), Reed

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