1999 / Solid Freeform Fabrication Proceedings
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Author Akiya Kamimura, Tamotsu Murakami, Naomasa Nakajima, The University of Tokyo
Source Solid Freeform Fabrication Proceedings, 1999, pp 583-590
Abstract A "refrigerative stereolithography" process is presented in this paper. In this process, a photopolymer resin for one building layer is supplied in a liquid state and cooled to become gel state before photopolymerization by laser. After repeating this process for all layers, a fabricated object is obtained by heating, melting and removing the non-photopolymerized resin from around the object. Since the object is fabricated in gel state resin, support structures are unnecessary and distortion by photopolymerization is reduced. A method of restraining surplus growth, which is caused by the overcuring of the bottom surface of solidified parts, is also proposed. The effectiveness of the method is confirmed by fabrication experiments using a prototype machine. (Auth abstract) [References: 3]
Solid Freeform Fabrication Proceedings can be obtained from: The Solid Freeform Fabrication Symposium
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