Treatment of waste paper, especially to effect the recovery of c

Details Treatment of waste paper, especially to effect the recovery of c Treatment of waste paper, especially to effect the recovery of c

1974-07-25

1976-11-30

Lindsay, Jr., Robert L.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

162 6, 162 8, 162 55, 162191, 209163, 209173, 241 21, 241 60, D21C 502, D21F 166

Patent

active

039947700

ABSTRACT:
Waste paper is treated to recover the fiber content thereof in a clean condition and without damaging the fibers by shredding the paper, admixing the paper with a treatment agent, retaining the paper and admixed treatment agent in a treatment zone for a period of time during which the paper is substantially completely disintegrated in the treatment agent, diluting the mixture, and processing the mixture through further treatment stations to a final flotation stage wherein the now clean fibers are separated from the liquid whereby the fibers can then be used in a further papermaking operation.

REFERENCES:
patent: 2005742 (1935-06-01), Hines
patent: 2083884 (1937-06-01), Wells
patent: 3245868 (1966-04-01), Espenmiller et al.
patent: 3248277 (1966-04-01), Gartner
patent: 3440134 (1969-04-01), Murphy
patent: 3441130 (1969-04-01), Sisson et al.

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