마이크로 사출 공정에서 충전 특성 규명: Part 1 실험
Investigation of filling characteristics in micro-injection molding processes: Part 1 Experimental
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This study investigated the filling characteristics in microchannels of injection-molded parts featuring microchannel patterns, utilizing experiments and molding analysis. Previous research employed a mold surface heating device to examine unstable flow behavior during the microinjection molding of polypropylene within microchannels. They observed improved replication fidelity of the microchannel structure as the mold surface temperature increased. In this study, experiments were conducted to clarify the filling behavior within microchannels. A stamper containing microchannel patterns, with channels ranging from approximately $24 \mu\text{m}$ to $100 \mu\text{m}$ in width, was used. To suppress solidified layer formation and enhance filling characteristics and molding efficiency, a mold structure capable of rapid surface heating and cooling was employed. The effects of key molding parameters on filling behavior were examined through a designed experimental procedure and molding analysis, and the results were subsequently analyzed and discussed.
Abstract
This study investigated the filling characteristics in microchannels of injection-molded parts featuring microchannel patterns, utilizing experiments and molding analysis. Previous research employed a mold surface heating device to examine unstable flow behavior during the microinjection molding of polypropylene within microchannels. They observed improved replication fidelity of the microchannel structure as the mold surface temperature increased. In this study, experiments were conducted to clarify the filling behavior within microchannels. A stamper containing microchannel patterns, with channels ranging from approximately $24 \mu\text{m}$ to $100 \mu\text{m}$ in width, was used. To suppress solidified layer formation and enhance filling characteristics and molding efficiency, a mold structure capable of rapid surface heating and cooling was employed. The effects of key molding parameters on filling behavior were examined through a designed experimental procedure and molding analysis, and the results were subsequently analyzed and discussed.