| 摘要 |
The invention relates to a process for manufacturing special paper designed for printing security means or papers, said paper being manufactured so as to show increased wet strength and containing known fluorescent security means which cannot be reproduced by photocopiers. The process is carried out on a common paper-making machine and consists in that, for the purpose of increasing the wet strength of the paper, an amount of 4 ... 18 l/t of aqueous solution of polyamin-polyamid-epychlorhydric resin with a content of dry matter of 12.5 plu/minus 0.5 % is dosed in the grinding holenders and in the selectifiner intake, and the paper surface is treated with an oxidated starch solution of 4.5 ... 6 % concentration on the sizing press.
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