Process for producing a neutral paper

Details Process for producing a neutral paper Process for producing a neutral paper

1988-09-29

1990-02-20

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

1621811, 1621814, 1621816, 1621818, D21H 328

Patent

active

049023829

ABSTRACT:
A neutral wood containing paper can be produced by adding, to a stock slurry containing mineral filler and a large majority of high yield pulp, a cationized starch, and thereafter bentonite and colloidal silica either simultaneously or successively with a time interval of at most 60 seconds, resulting in an improved retention of fiber and filler, an improved drainage, and a decreased pitch problem.

REFERENCES:
patent: 4388150 (1983-06-01), Sunden et al.
patent: 4643801 (1987-02-01), Johnson
patent: 4753710 (1988-06-01), Langley et al.

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