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마이크로 패턴에서의 급속 반응 사출 조건 최적화에 관한 연구
정희택(Hui-Tack Jeong),권오경(Oh-Kyung Kwon),윤재호(Jae-Ho Yun),박근(Keun Park),김용찬(Yong-Chan Kim) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
The rapid thermal response(RTR) molding is a novel process developed to raise the temperature of mold surface rapidly in the injection stage and then cool rapidly to the ejection temperature by air or water. The objectives of this paper are to investigate the effect of mold temperature, pressure and thickness of micro pattern molding and to provide an optimization method of RTR injection molding for micro pattern from Moldflow simulation. Optimal minimum temperature and pressure were found without shortcut according to thickness. Filling percentage was influenced by glass transition temperature with a variation of resin. The optimal temperature was slightly higher than the glass transition temperature regardless of pressure, thickness, the kinds of resin in the micro pattern molding.