Paper making and fiber liberation – Processes and products – Non-fiber additive
Patent
1993-12-21
1995-07-18
Jones, W. Gary
Paper making and fiber liberation
Processes and products
Non-fiber additive
1621815, 427343, 427342, D21H 2518, D21H 2502
Patent
active
054338271
ABSTRACT:
Acidic papers, books, and other sheets of cellulosic material may be deacidified and so given a prolonged life by bringing the papers, books, or other sheets of cellulosic material to be treated in intimate contact with a source of solid alkali such as calcium carbonate filled paper, at an elevated humidity and under mechanical pressure for a period long enough to produce deacidification; the process differs from other processes in that it is carried out in the solid state without the use of liquid or gaseous reactants.
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Middleton Steven R.
Page Derek H.
Scallan Anthony M.
Zou Xuejun
Fortuna Jos'e A.
Jones W. Gary
Pulp and Paper Research Institute of Canada
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