Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste
Patent
1991-05-21
1993-05-25
Hastings, Karen M.
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
Waste paper or textile waste
162 7, 162 8, 162DIG4, D21C 502, D21C 9147
Patent
active
052136612
ABSTRACT:
A method is disclosed for the detackification of stickies in the production of recycled paper products containing secondary fibers. Oxygen is used to reduce the tackiness of stickies in secondary pulps, and optionally is used with alkali and/or detackification agents for optimum stickies control. The preferred alkali source is fully oxidized white liquor.
REFERENCES:
patent: 4416727 (1983-11-01), Elton et al.
patent: 4710267 (1987-12-01), Elsby et al.
patent: 4886575 (1989-12-01), Moreland
Casey "Pulp and Paper Chemistry & Chemical Technology" vol. III 1981 pp. 1614-1617.
L. D. Markham & C. E. Courchene, Oxygen Bleaching of Secondary Fiber Grades, Dec. 1988, pp. 168-174.
P. C. Miller, et al., Chemical Treatment Programs for Stickies Control, 1988, pp. 345-348.
A. de Ruvo, et al., Upgrading of Pulp from Corrugated Containers by Oxygen Delignification, Jun. 1986, pp. 100-103.
Hristofas Konstantinos
Magnotta Vincent L.
Naddeo Ronald C.
Air Products and Chemicals Inc.
Fernbacher John M.
Hastings Karen M.
Marsh William F.
Simmons James C.
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