Paper making and fiber liberation – Processes and products – Non-fiber additive
Patent
1987-01-27
1988-06-28
Chin, Peter
Paper making and fiber liberation
Processes and products
Non-fiber additive
1621646, 1621682, 1621683, 1621818, 1621813, D21H 336
Patent
active
047537108
ABSTRACT:
Paper or paper board is made by passing an aqueous cellulosic suspension through a centriscreen or other shear device and then draining the purified suspension, and an improved combination of retention, drainage, drying and formation is achieved by adding to the suspension an excess of high molecular weight linear synthetic cationic polymer before shearing the suspension and adding bentonite after shearing.
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Holroyd David
Langley John
Allied Colloids Limited
Chin Peter
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