Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With chemical or physical modification of liberated fiber
Patent
1988-02-12
1989-09-26
Alvo, Steve
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With chemical or physical modification of liberated fiber
162 24, 162 70, 162 71, D21C 900
Patent
active
048697826
ABSTRACT:
Anfractuous cellulose fibers exhibiting exceptional high bulking properties are produced by treatment of dry hammermilled wood cellulose fibers with anhydrous liquid ammonia at substantially atmospheric pressure. Fibrous webs of enhanced bulk are produced by preparing an aqueous furnish comprising at least ten percent by weight ammonia treated anfractuous fibers in admixture with conventional papermaking fibers.
REFERENCES:
patent: 3707436 (1972-12-01), O'Connor
patent: 4227964 (1980-10-01), Kerr et al.
patent: 4488932 (1984-12-01), Eber
Perry's Chemical Engineers' Handbook, Perry et al., pp. 3-5 and 3-43; McGraw-Hill, N.Y. 1963.
Kajander Richard E.
Nelson John G.
Aguele William A.
Alvo Steve
Gallagher Richard J.
James River--Norwalk, Inc.
Whaley Thomas H.
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