| abstract |
In order to overcome the limitations and problems that earlier apparatus and methods have experienced, a 3D printing head (18) comprising a nozzle (20; 20A; 20B) is proposed, wherein the nozzle (20; 20A; 20B) comprises: a material extrusion portion (22A; 22B), and at least one protective gas injection portion (24A; 24B) co-acting with said material extrusion portion (22A; 22B). A related apparatus (10) for 3D printing an article (12), in particular a food article, is also proposed. A related method of 3D printing an article (12), in particular a food article, is also proposed. |