 This study investigated the effect of di-land length on the performance of ram extruders used to produce dry ice pellets from solid carbon dioxide. It was found that longer di-lands resulted in lower extrusion forces and higher densities of dry ice pellets. This suggests that longer di-lands can be used to optimize the production of dry ice pellets, leading to improved energy efficiency and product quality. This article was authored by Jan Gorecki and Wiktor Lajkowski.