TED-AJ03-116 A NOVEL POLYMER PROCESSING ASSISTED BY INFRARED RADIATION FROM AN EXTERNAL SOURCE TO ATTAIN HIGH PRECISION TRANSCRIPTION
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概要
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This paper proposes a novel polymer processing for precision replication developed from a heat transfer point of view. It has two stages of processing : a molding process and a replication process assisted by an infrared radiation from an external heat source (FigureA-1). In the first stage, a blank workpiece is molded by a conventional injection molding process. Then, in the second stage, the workpiece is inserted into a precise mold cavity having a window transparent to infrared radiation, and is radiated by an infrared radiation beam from an external source. The temperature of polymer surface rises due to absorption of radiation, and it helps replication of the information on the window surface to the polymer one. Replication is evaluated in this process, and the effect of mold wall temperature on the transcriptional ability is also examined. The temperature distributions in the mold system were numerically estimated to assess the temperature rise at the surface layer of polymeric workpiece in the tested processes the direct irradiation through a grooved IR-transparent mold and the process using a stamper for transcription. Figures A-2 and A-3 shows the temperature distributions within the mold system in the direct radiation process just after irradiation beginning and in the indirect radiation with a metallic stamper sheet just after radiation beginning. It is considerable from this numerical simulation that enough heat can be generated to process the polymeric replica.[figure]
- 一般社団法人日本機械学会の論文