Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With non-fiber material added to product
Patent
1991-02-04
1992-03-31
Chin, Peter
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With non-fiber material added to product
156 624, 162 12, 162 13, 162 16, 162150, 162163, D21H 1723
Patent
active
051005115
ABSTRACT:
A method for the manufacture of products containing fibers of lignocellulosic material which involves the disintegration of a lignocellulosic material into fibers and forming and pressing of the fiber web into the product in question, which is preferably in the form of fiberboard (board products). The material that forms the fibers is impregnated with lignin in conjunction with water and at a pH which does not substantially exceed 12.5. When the lignin has been absorbed by the material it is fixed against leaching by water through the modification of said lignin into an essentially water-insoluble form.
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Ohlsson Brita
Simonson Rune
stman Birgit
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