A PROCESS FOR PRODUCING A THREE-DIMENSIONAL (3D) OBJECT EMPLOYING GRANULATES

• Main Authors: STEINKE, Oleg, ARBTER, Rene, STAUDT, Thorsten Martin, SEILER, Rudolf, SCHWENDY, Sascha Tim
• Format: Patent
• Language: English; French
• Published: 22.04.2021
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; ARTIFICIAL STONE; CASTING; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; REFRACTORIES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SLAG; TRANSPORTING; TREATMENT OF NATURAL STONE; WORKING METALLIC POWDER; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The present invention relates to a process for producing a three-dimensional (3D) object by employing a three-dimensional (3D) printing process wherein a granulate having an particle size in the range of 0.2 to 1 mm is used as a starting material to be printed within said 3D printing process, employing a 3D extrusion printer. In one preferred embodiment, the process according to the present invention is employed for producing a 3D green body. The invention further relates to 3D objects as such and the corresponding processes for obtaining such 3D objects, in particular a 3D green body, a 3D brown body and a 3D sintered body. La présente invention concerne un procédé de production d'un objet tridimensionnel (3D) par l'emploi d'un procédé d'impression tridimensionnelle (3D) dans lequel un granulé ayant une taille particulaire dans la plage de 0,2 à 1 mm est utilisé en tant que matériau de départ devant être imprimé au sein dudit procédé d'impression 3D, employant une imprimante 3D par extrusion. Dans un mode de réalisation préféré, le procédé selon la présente invention est employé pour la production d'un corps cru 3D. L'invention concerne en outre des objets 3D en tant que tels et les procédés correspondants pour obtenir de tels objets 3D, en particulier un corps cru 3D, un corps cuit 3D et un corps fritté 3D.