Apparatus for additive manufacturing of three-dimensional objects

An apparatus for additively manufacturing three-dimensional objects, the apparatus comprising:

• a process chamber, a coating device, and a shielding device;
• wherein the process chamber comprises a first working plane area and a second working plane area, the first working plane area comprising a construction plane, and the second working plane area housing at least a part of a guiding device;
• wherein the coating device comprises:
• a coating element assembly group that is movably supported relative to the construction plane by the guiding device, and
• at least one coating element configured to form construction material layers in the construction plane;
• wherein the shielding device is configured to shield the second working plane area from intrusion of construction material or impurities from the first working plane area arising related to operation of the apparatus;
• wherein the shielding device comprises a shielding band that extends longitudinally along the first working plane area, wherein the shielding band is coupled for movement with the coating element assembly group;
• and
• wherein the shielding band is configured to be guided movably along a plurality of supporting points that define an interior region of the second working plane area, wherein the guiding device is arranged or formed inside the interior region of the second working plane area.