Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste
Patent
1976-08-02
1978-02-28
Lindsay, Jr., Robert L.
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Waste paper or textile waste
162 6, 162 7, 162 8, D21C 502
Patent
active
040765784
ABSTRACT:
Waste paper, particularly newsprint, is treated to release adhering ink particles (e.g. pigment carbon) from the paper fibers, and the ink solids (and organic contaminants) are then preferentially collected on the surface of inserted non-soap solids which have an affinity for, and are of larger size than, the ink solids. The ink-coated solids can be removed from the system by suitable physical means such as hydrocyclones, screens or decantation.
REFERENCES:
patent: 2005742 (1935-06-01), Hines
patent: 3056713 (1962-10-01), Gartner
patent: 3764460 (1973-10-01), Miyamoto et al.
patent: 3803033 (1974-04-01), Sutherland
patent: 3844941 (1974-10-01), Jones
Puddington Ira E.
Sexton Ernest A.
Sparks Bryan D.
Canadian Patents and Development Limited
Lindsay, Jr. Robert L.
Smith William F.
The Ontario Paper Company Ltd.
Thomson Alan A.
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