Folding of digital prints has been investigated experimentally in order to determine the influence from different features on the residual tensile strength of the folded paper. In particular, the effect of toner-layer, paper-fibre orientation and pre-creasing is investigated and the experimental results are supplemented with numerical ones based on the finite element method. The results indicate that creasing, and to a less extent also fibre orientation, is the most important factor influencing the residual tensile strength after folding.
Conference Paper