Improved process for manufacturing board

Details Improved process for manufacturing board Improved process for manufacturing board

D - Textiles, Paper

21

H

D21H 17/14 (2006.01) D21H 21/16 (2006.01) D21H 17/17 (2006.01) D21H 17/62 (2006.01) D21H 27/10 (2006.01)

Patent

CA 2414637

11 The invention relates to a process for manufacturing liquid packaging board, in which process a board pulp is treated with a percarboxylic acid by adding to the pulp percarboxylic acid in an amount of 0.5 - 5 kg/ton of dry pulp, indicated as a 100 per cent percarboxylic acid, whereafter, or simultaneously with the percarboxylic acid treatment, sizing is carried out with a combination of a resin size and a neutral size, which is followed by board forming. The manufactured board has good resistance to liquid penetration.

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