Production of high strength linerboard with oxygen and alkali

Details Production of high strength linerboard with oxygen and alkali Production of high strength linerboard with oxygen and alkali

1989-01-13

1990-12-18

Simmons, David A.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Gas, vapor or mist contact

162 90, D21C 910

Patent

active

049784269

ABSTRACT:
Pulp of improved refinability for the production of high strength linerboard is obtained by digesting wood chips in alkaline cooking liquor, defibering, treating with oxygen and alkali in the absence of a cellulose protector, and refining. Linerboard pulp produced by this method results in improved paper strength properties. The treatment is conducted in its best mode at temperatures below 100.degree. C. to minimize pulp yield losses.

REFERENCES:
patent: 3832276 (1974-08-01), Roymoulik et al.
patent: 4363697 (1982-12-01), Markham et al.

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