Paper making and fiber liberation – Processes and products – Undigested cellulosic fiber
Patent
1990-01-22
1991-06-04
Fisher, Richard V.
Paper making and fiber liberation
Processes and products
Undigested cellulosic fiber
162165, 1621816, D21H 1100
Patent
active
050211226
ABSTRACT:
A shaped product comprising exploded bark. Preferably the shaped product comprises exploded softwood bark having at least 23% cellulose and at least 18% lignin and polyphenols content, based upon the dry weight basis of the bark. One of the methods to make the shaped product comprises exploding softwood bark to obtain exploded softwood bark having at least 23% cellulose and at least 18% lignin and polyphenols content, compressing that exploded bark into a shaped product, while removing in part water, and drying the shaped product to remove the remaining water.
REFERENCES:
patent: 1663503 (1928-05-01), Mason
patent: 3984363 (1976-10-01), D'Alelio
patent: 4879066 (1989-11-01), Crompton
Rydholm, Pulping Processes, Interscience Publishers, 1967, p. 100.
Desrochers Michel J.
Drouin Michel P.
Jean Michel
Domtar Inc.
Fisher Richard V.
Friedman Charles K.
Gauvin Antoine H.
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