Modelling of hot pressing of paper

In this paper a one-dimensional model for hot pressing of paper is considered. It is derived by supplying an energy equation to the pre-viously derived three-phase model. Effects of thermal softening and plastic deformation of paper are taken into account. Numerical solu-tions are obtained using a ‘saturation-upwind ’ method. The results show qualitative agreements with observed features of this process. They also suggest application of multinip or extended nip presses to improve pressing results.