Theoretical and Experimental Study of Pressing Paper

摘要

This work presents a theoretical analysis and experimental pressing process of Kraft paper. In this paper, an analytical model of pressing paper was developed and validated against data obtained in experiments on Kraft paper 70 g/m~2 produced by the paper machine PM2 at the Tunisian Industrial Paper and board (SOTIPAPEER). This model assumes that the process consists of pressing an operation of external heating followed by isothermal compression and that the paper used to behave during this process, as a spring that is compressed. The predictions of this model indicate a good fit with the experimental results. It shows that for greater dryness at the exit of the press section, it is advisable to work at higher temperatures and stronger constraints.