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Characterization of the micro injection-compression molding process for the replication of high aspect ratio micro-structured surfaces

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Abstract

The complete and uniform replication of micro-structured functional surfaces is still challenging, even using state-of-the-art micro injection molding technologies, thus hindering the development of new optical and bio-medical applications. Injection-compression molding is a candidate process to overcome the inherent limitations of conventional injection molding by evening the polymer pressure inside the cavity. However, injection-compression molding is characterized by a more complex process control, especially when a rapid heat cycle molding is adopted. In this work, the applicability of variothermal injection-compression molding for the manufacturing of high aspect ratio micro-structured surfaces was experimentally investigated. To achieve the required replication accuracy the study and the optimization of process parameters were carried out, considering the factors that control the compression phase, which pushes the hesitating polymer into micro features. The results show how the optimization of process parameters that are related to the compression phase can be effective to improve and level the replication of high aspect ratio micro features. Moreover, the critical issues arising from the selection of very high mold temperature were investigated, controlling the breakage of the replicated micro features inside the mold.

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References

  • Becker H, Gärtner C (2008) Polymer microfabrication technologies for microfluidic systems. Anal Bioanal Chem 390(1):89–111

    Article  Google Scholar 

  • Christiansen AB, Clausen JS, Mortensen NA, Kristensen A (2014) Injection moulding antireflective nanostructures. Microelectron Eng 121:47–50

  • Fan B, Kazmer DO, Theriault RP, Poslinski AJ (2003) Simulation of injection-compression molding for optical media. Polym Eng Sci 43(3):596–606

  • Giboz J, Copponnex T, Mélé P (2007) Microinjection molding of thermoplastic polymers: a review. J Micromechanics Microengineering 17(6):R96

    Article  Google Scholar 

  • Griffiths CA, Tosello G, Dimov SS, Scholz SG, Rees A, Whiteside B (2015) Characterisation of demoulding parameters in micro-injection moulding. Microsyst Technol 21(8):1677–1690

    Article  Google Scholar 

  • Hattori S, Nagato K, Hamaguchi T, Nakao M (2010) Rapid injection molding of high-aspect-ratio nanostructures. Microelectron Eng 87(5):1546–1549

    Article  Google Scholar 

  • Hong S, Min I, Yoon K, Kang J (2013) Effects of adding injection-compression to rapid heat cycle molding on the structure of a light guide plate. J Micromechanics Microengineering 24(1):015009

    Article  Google Scholar 

  • Hong S, Hwang J, Kang J, Yoon K (2015) Comparison of injection molding and injection/compression molding for the replication of microstructure. Korea-Aust Rheol J 27(4):309–317

    Article  Google Scholar 

  • Huang M-S, Chung C-F (2011) Injection molding and injection compression molding of thin-walled light-guided plates with v-grooved microfeatures. J Appl Polym Sci 121(2):1151–1159

    Article  Google Scholar 

  • Ito H, Suzuki H (2009) Micro-features formation in injection compression molding. J Solid Mech Mater Eng 3(2):320–327

    Article  Google Scholar 

  • Kim NH, Isayev AI (2013) Birefringence in injection-compression molding of amorphous polymers: simulation and experiment. Polym Eng Sci 53(8):1786–1808

  • Lee H-S, Yoo Y-G (2012) Effects of processing conditions on cavity pressure during injection-compression molding. Int J Precis Eng Manuf 13(12):2155–2161

    Article  Google Scholar 

  • Lucchetta G, Fiorotto M, Bariani PF (2012) Influence of rapid mold temperature variation on surface topography replication and appearance of injection-molded parts. CIRP Ann-Manuf Technol 61(1):539–542

    Article  Google Scholar 

  • Lucchetta G, Sorgato M, Carmignato S, Savio E (2014) Investigating the technological limits of micro-injection molding in replicating high aspect ratio micro-structured surfaces. CIRP Ann-Manuf Technol 63(1):521–524

    Article  Google Scholar 

  • Lucchetta G, Sorgato M, Zanchetta E, Brusatin G, Guidi E, Di Liddo R, Conconi MT (2015) Effect of injection molded micro-structured polystyrene surfaces on proliferation of mc3t3-e1 cells. Express Polym Lett 9(4):354–361

    Article  Google Scholar 

  • Masato D, Sorgato M, Lucchetta G (2016) Analysis of the influence of part thickness on the replication of micro-structured surfaces by injection molding. Mater Design 95:219–224

    Article  Google Scholar 

  • Metwally K, Barriere T, Khan-Malek C (2016) Replication of micrometric and sub-micrometric structured surfaces using micro-injection and micro-injection compression moulding. Int J Adv Manuf Technol 83(5–8):779–789

    Article  Google Scholar 

  • Myers RH, Montgomery DC, Anderson-Cook CM (2016) Response surface methodology: process and product optimization using designed experiments. Wiley, New York

  • Rytka C, Kristiansen PM, Neyer A (2015) Iso-and variothermal injection compression moulding of polymer micro-and nanostructures for optical and medical applications. J Micromechanics Microengineering 25(6):065008

    Article  Google Scholar 

  • Shen YK, Chang HJ, Hung LH (2007) Analysis of the replication properties of lightguiding plate for micro injection compression molding. In: Key engineering materials, vol 329. Trans Tech Publ, pp 643–648

  • Sorgato M, Babenko M, Lucchetta G, Whiteside B (2016) Investigation of the influence of vacuum venting on mould surface temperature in micro injection moulding. Int J Adv Manuf Technol 1–9

  • Sorgato M, Masato D, Lucchetta G (2016) Effect of vacuum venting and mold wettability on the replication of micro-structured surfaces. Microsyst Technol

  • Su Q, Zhang N, Gilchrist MD (2016) The use of variotherm systems for microinjection molding. J Appl Poly Sci 133(9)

  • Suzuki H, Takayama T, Ito H. (2012) Replication behavior for micro surface features with high aspect ratio and structure development in injection compression molding. In: International Journal of Modern Physics: conference series, vol 6. World Scientific, pp 563–569

  • Xu G, Yu L, Lee LJ, Koelling KW (2005) Experimental and numerical studies of injection molding with microfeatures. Polym Eng Sci 45(6):866–875

    Article  Google Scholar 

  • Yang SY, Chen YC (1998) Experimental study of injection-charged compression molding of thermoplastics. Adv polym Technol 17(4):353–360

    Article  Google Scholar 

  • Yang SY, Ke MZ (1995) Experimental study on the effects of adding compression to injection molding process. Adv Polym Technol 14(1):15–24

    Article  Google Scholar 

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Authors and Affiliations

  1. Te.Si. Laboratory, University of Padova, Padova, Italy

    Davide Masato, Marco Sorgato & Giovanni Lucchetta

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  1. Davide Masato
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  2. Marco Sorgato
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  3. Giovanni Lucchetta
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Correspondence to Davide Masato.

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Masato, D., Sorgato, M. & Lucchetta, G. Characterization of the micro injection-compression molding process for the replication of high aspect ratio micro-structured surfaces. Microsyst Technol 23, 3661–3670 (2017). https://doi.org/10.1007/s00542-016-3149-z

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  • DOI: https://doi.org/10.1007/s00542-016-3149-z

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