What is described is a blow-molding machine for plastic containers, comprising a plurality of platens for supporting blow mold halves, wherein at least two of the platens are in the form of movable multi-carriers for simultaneously supporting at least two blow mold halves which are assigned to different blow-molding cavities. Since the multi-carriers are driven in such a manner that at least one of the blow-molding cavities can be opened and at the same time at least one other of the blow-molding cavities can be closed by means of a continuous movement of the multi-carriers, acceleration and deceleration ramps can be reduced upon opening and closing and it is possible to gain process time for the blow molding.