Ceramics-Silikáty 33, (1) 1 - 6 (1989)

The forming of ceramic pastes is described, quantitatively on the basis of mathematical modelling. On the assumption that the forming of ceramic pastes is a process involving joint sharing of weight and momentum, a mathematical model of paste flow through a pipe describing the velocity conditions in the extruder mouth during the forming process was worked out on the basis of balance equations for certain simplifying assumptions.