By Michal Vykoukal, Markéta Přerovská, Alois Burian, Tomáš Bajer. SAND TEAM, spol. s r.o., Holubice 331, 683 51 Holubice, the Czech Republic. The GEOPOL® technology is currently used in the foundries for three basic production processes/technologies: (1) for self-hardening moulding mixtures, (2) sand mixtures hardened by gaseous carbon dioxide and (3) the hot box technology with hot air hardening. The…