Thermal treatment device and method for operating the thermal treatment device

Thermal treatment device comprising at least one treatment deck and the thermal treatment device comprising per treatment deck a mass flow conveyor and a container feed device for feeding containers to a first mass flow conveyor,

• wherein the mass flow conveyor adjoins the container feed device, and
• wherein the container feed device comprises:
• an infeed conveyor being at least single-tracked which are driveable in a first direction and are designed to convey containers in the first direction,
• a first group of a plurality of parallel first conveyors which are arranged so as to be parallel and adjoining the infeed conveyor being at least single-tracked and which are driveable in the first direction and are designed to convey containers in the first direction,
• a second group of a plurality of parallel second conveyors which are arranged so as to be parallel and adjoining the first group of a plurality of parallel first conveyors and which are driveable in a second direction and are designed to convey containers in the second direction which is counter to the first direction,
• wherein the containers of the second group of a plurality of parallel second conveyors are transferable transversely to the second direction in the direction to the mass flow conveyor.