Paper making and fiber liberation – Processes and products
Patent
1981-10-22
1983-02-22
Chin, Peter
Paper making and fiber liberation
Processes and products
162 9, 162187, 241 5, 241 28, 241 40, D21D 120
Patent
active
043747027
ABSTRACT:
Microfibrillated celluloses having properties distinguishable from all previously known celluloses, are produced by passing a liquid suspension of cellulose through a small diameter orifice in which the suspension is subjected to a pressure drop of at least 3000 psig and a high velocity shearing action followed by a high velocity decelerating impact, and repeating the passage of said suspension through the orifice until the cellulose suspension becomes a substantially stable suspension. The process converts the cellulose into microfibrillated cellulose without substantial chemical change of the cellulose starting material.
REFERENCES:
patent: 3701484 (1972-10-01), Donovan
Sandberg Karen R.
Snyder Fred W.
Turbak Albin F.
Chin Peter
Holt Harold J.
International Telephone and Telegraph Corporation
Raden James B.
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