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doi:10.3850/978-981-07-0319-6_218
Effect of Process Parameters on the Quality of Micro Injection Moulded Parts
M. R. Mani1, R. Surace2, J. Segal1, I. Fassi2 and S. Ratchev1
1Manufacturing Research Division, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
2ITIA-CNR, Institute of Industrial Technology and Automation, National Research Council, Italy
ABSTRACT
Micro injection moulding is becoming more and more important among the available processes for production of micro electromechanical systems (MEMS) and micro system technologies (MST) and more polymer products are being manufactured by micro injection moulding. As a result, achieving high quality parts with high dimensional accuracy is crucial. A set of experiments were conducted to study the effects of three process parameters, injection velocity, injection pressure, melt temperature and mould temperature, on the dimensional accuracy of micro channels. For the smaller channels, mould temperature had to be varied, as the lower mould temperature resulted in short shots. Design of experiments was employed to conduct the experiments and two polymers, polyoxymethylene (POM) Hostaform and Liquid Crystal Polymer (LCP) Vectra, from Ticona were used. Keywords: Micro injection moulding, Polymer, Process parameters.
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