METHOD AND APPARATUS FOR PHOTO-CURING WITH SELF-LUBRICATING SUBSTRATUM FOR THE FORMATION OF THREE-DIMENSIONAL OBJECTS

• Main Authors: Tringaly, Luciano, Zitelli, Gianni, Denaro, Andrea
• Format: Patent
• Language: English
• Published: 06.09.2018
• 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; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Described is a method for forming three-dimensional objects by photo-curing a photo-curing liquid polymer exposed to a radiation, wherein said three-dimensional objects form by growth, due to the progressive curing of said photo-curing liquid polymer, in the space between a sheet transparent to the radiation and a supporting plate, that is, a portion already formed of said objects, said supporting plate progressively moving away from said transparent sheet, characterised in that on the side of said transparent sheet facing towards the photo-curing liquid polymer a membrane is arranged, said membrane being transparent to said radiation, said membrane being covered by a layer of liquid lubricant, which is released gradually by said membrane, as well as an apparatus for implementing the method.