IMPROVED PROCESS FOR MANUFACTURING BOARD

摘要

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, indicate d 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 boa rd has good resistance to liquid penetration.