| 摘要 |
A method for the production of impregnated paper from fiber suspension or pulp is disclosed. It comprises the formation of a paper web on a conventional papermaking machine followed by treatment of the web in the stage of having a residual water content of 6% to 20% with a mixture of a) 0.5% to 5.0% by weight of a silicone-free, adhesive-repellent surface-active agent, (b) 89.0% to 95,5% by weight of an elastomer or rubber-like polymer, and (c) 2.0% to 6.0% by weight of a paper softener and continuation of the drying-process until the paper is completely dried. The mixture is added in an amount such that the dried paper web contains 7% to 60% by weight of the mixture. The mixture may be added, particularly in the case of lightweight papers, to the web itself after its formation at a residual water content of 6% to 20%. Alternatively, a primary amount of the mixture can be added to the fiber suspension or pulp prior to the formation of the web, the amount being 1% to 12%, based on the dry weight of the fiber suspension or pulp. |
