Method and device for producing a coated object by means of additive manufacturing in a vacuum

A method for producing a coated object by additive manufacturing in vacuum, the method comprising:

• forming a first polymer layer on one or both of a workpiece and a printing bed;
• forming a first coating layer on at least a part of the first polymer layer by vacuum-based vapor deposition;
• and
• forming a second polymer layer on at least a part of one or both of the first polymer layer and the first coating layer, wherein the second polymer layer is formed before, during or after forming the first coating layer,
• wherein the first polymer layer, the first coating layer and the second polymer layer are formed in vacuum at a gas pressure of less than 1 mbar.

A device for producing a coated object using a method for producing the coated object by additive manufacturing in vacuum, the method comprising:

• forming a first polymer layer on one or both of a workpiece and a printing bed;
• forming a first coating layer on at least a part of the first polymer layer by vacuum-based vapor deposition;
• and
• forming a second polymer layer on at least a part of one or both of the first polymer layer and the first coating layer, wherein the second polymer layer is formed before, during or after forming the first coating layer and wherein the first polymer layer, the first coating layer and the second polymer layer are formed in vacuum at a gas pressure of less than 1 mbar,
• the device comprising:
• a vacuum chamber with a receiver configured to receive the workpiece during the production of the coated object;
• an additive manufacturing unit arranged completely or partially in the vacuum chamber and configured to selectively form a polymer layer on at least a part of one or both of the workpiece received by the receiver and the printing bed;
• and
• a coating unit arranged completely or partially in the vacuum chamber and configured to form a coating layer on at least a part of one or both of the workpiece and the polymer layer by vacuum-based vapor deposition.