A system for producing chocolate-based articles in solidifying form includes at least a first conveyor belt and a loading section for loading mould trays onto the at least first conveyor belt, which is arranged for transporting the mould trays through a cooling chamber along a first cooling path. The cooling chamber is arranged for solidifying the chocolate mass under predetermined conditions before the mould trays are collected. An air circulation device is arranged between the top load carrying side of the at least first conveyor belt and a bottom side of the mould trays such that cooling air can circulate along the bottom side of the mould trays
