D - Textiles – Paper – 21 – B
Patent
D - Textiles, Paper
21
B
D21B 1/02 (2006.01) D21B 1/16 (2006.01) D21C 1/00 (2006.01)
Patent
CA 2073048
2073048 9106700 PCTABS00005 Mechanical and chemimechanical cellulose pulp, particularly paper pulp, is produced at a low energy input by disintegrating and beating wood material in one or more stages. Acccording to the invention, a substance capable of forming complexes with polyvalent metal ions, particularly calcium ions, so-called complexing agent, is added to the wood material prior to the beating process in order to replace said calcium or other polyvalent metal ions with sodium ions, therewith a further reduction in the energy input is obtained.
Engstrand Per
Hammar Lars-Ake
Htun Myat
Sjoegren Birger
Svensson Boerje
Engstrand Per
Fetherstonhaugh & Co.
Hammar Lars-Ake
Htun Myat
Sjoegren Birger
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