Upgrading waste paper by treatment with sulfite waste liquor

Details Upgrading waste paper by treatment with sulfite waste liquor Upgrading waste paper by treatment with sulfite waste liquor

1978-09-01

1980-03-04

Bashore, S. Leon

Paper making and fiber liberation

Processes and products

Plural fiber containing

162163, 162164R, 162175, 162184, 428182, D21H 318

Patent

active

041916107

ABSTRACT:
Fibrous materials are disclosed having incorporated therein upgraded waste sulphite liquor; the liquor is neutralized, e. g., with sodium borate, sodium aluminate, reacidified, if needed, with alum; the modified sulphite waste liquor of hardwoods as well as articles of manufacture of fibrous materials such as corrugated medium made of waste materials are diclosed; further, articles of manufacture thus modified include starch or sizing and are within the scope of the invention.

REFERENCES:
patent: 550712 (1895-12-01), Ekman
patent: 1235153 (1917-06-01), Hoeffner
patent: 1842712 (1932-01-01), Bradley
patent: 3007910 (1961-11-01), Adolphson et al.
patent: 3007910 (1961-11-01), Adolphson et al.
patent: 3236720 (1966-02-01), Tousignant et al.
patent: 3305435 (1967-02-01), Williston et al.
patent: 3644167 (1972-02-01), Mowry
patent: 3794557 (1974-02-01), Harmon

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