Numerical Prediction of the Particle Concentration Distribution in a Slot Die

In this study, the uniformity of particle concentration in a cavity die containing the unstable dispersed particles is predicted by using one-dimensional flow model for non-Newtonian fluid in a cavity and the Stokesian sedimentation model. In order to depict the movement of particles, the equation combining the one-dimensional flow equation in a cavity with the particle concentration equation predicting the sedimentation is derived. We investigated the resolution to avoid the sedimentation from the operational and material point of views. As a result, we found the appropriate conditions to prevent from the problems.