Abstract
In micro injection molding, the melt flow behavior is important for the final product quality. However, the current process monitoring and measurement technology are not adequate enough to provide a direct analysis access. In the presented study, a glass insert mold designed for performing the direct visual analysis for melt flow phenomena in micro injection molding is introduced. The micro tensile specimen with 0.1 × 0.4 mm2 (depth × width) cross section dimension is chosen as the objective part. The correlation between processing parameters (injection pressure, injection speed, mold temperature) and flow behavior was investigated and analyzed. The results show that the injection pressure put an obvious effect on the filling speed through micro cavity. Injection speed can influence the filling time dramatically also. Higher mold temperature brings positive influence with the flowing speed, due to the lower viscosity of polymers in higher mold temperature.
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Acknowledgments
The authors would like to thank the DFG (Deutsche Forschungsgemeinschaft) for the financial support of the investigation.
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Xie, L., Ziegmann, G. Visualizing analysis for weld line forming in micro injection molding by experimental method. Microsyst Technol 15, 913–917 (2009). https://doi.org/10.1007/s00542-009-0848-8
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DOI: https://doi.org/10.1007/s00542-009-0848-8