Patent ID: 6998089
Filing Date: 2006-02-14
Classification: B29C,B33Y

Abstract:
1. A method of fabricating a molding tool comprising the steps of: forming a pair of thin die surface layers, each having a predetermined die surface shape, integrally with the corresponding one of a pair of reinforcing rib portions on the back surface of the corresponding one of said thin die surface layers by a stereolithography method using a stereolithography material, and forming each of a pair of back reinforcement resin layers integrally by casting a back reinforcement resin material into a space of the corresponding one of said reinforcing rib portions on the back surface of thin die surface layer, wherein a core portion is arranged on the back surface of the corresponding one of said reinforcing rib portions and said core portion is composed of a selected one of polyethylene resin, polypropylene resin, polystyrene resin, ABS resin, polyamide resin, polyethylene fluoride resin, polyurethane resin and a foamed material of any of said resins.