Micro Plastic Part Fabrication Using Custom Made Vertical Injection Molding Machine

Abstract:

This study focuses on fabrication of a micro plastic part using custom made vertical injection molding machine. Electrical discharge machining (EDM) and micro mechanical machining was used to fabricate micro shape cavity on aluminum mold. The mold was embedded with Polymethyl Methacrylate (PMMA) window to observe the behavior of plastic melt flow during injection. The custom made vertical injection molding machine has capabilities to produce a micro plastic part. But, the filling behavior observation was contrast with MoldFlow analysis software. The flashing problem occurs at each molded micro part due to improper selection of injection molding parameter.

• Periodical: Advanced Materials Research (Volumes 197-198)
• Pages: 1337-1345
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.197-198.1337
• Online since: February 2011
• Authors: M. Azuddin, Z. Taha, Imtiaz Ahmed Choudhury
• Keywords: Aluminum Mold, Micro Molding, Plastic Flow, Polypropylene (PP), Vertical Injection Molding

References

[1] W. B. Young: Applied Mathematical Modelling Vol. 31 (2007), p.1798.

[2] C.A. Griffiths, S.S. Dimov, E.B. Brousseau and R.T. Hoyle: Journal of Materials Processing Technology Vol. 189 (2007), p.418.

[3] C. Kukla, H. Loibl and H. Detter: Kunststoffe Plast Europe (1998), p.1331.

[4] L. Weber and, W. Ehrfeld: Kunststoffe Vol. 89, No. 10 (1999), p.192.

[5] M.C. Song, Z. Liu, M.J. Wang, T.M. Yu and D.Y. Zhao: Journal of Materials Processing Technology Vol. 187–188 (2007), p.668.

[6] C.K. Huang, European Polymer Journal Vol. 42 (2006), p.2174.

[7] A. Chandekar, M. Alabran , S. K. Sengupta, J. S. Lee, L. Joey, J.L. Mead, M.F. Barry, J.E. Whitten, S. Somu and A.A. Busnaina: Microelectronic Engineering Vol. 85 (2008), p.187.

DOI: 10.1016/j.mee.2007.05.008

[8] A.W. McFarland and J.S. Colton: Journal of Microelectromechanical System Vol. 14, (2005), p.1375.

[9] P.C. Chang and S.J. Hwang: Journal of Polymer Research Vol. 13 (2006), p.25.

[10] B.K. Lee, D. S. Kim, and T. H. Kwon: Microsystem Technologies Vol. 10 (2004), p.531.

[11] R.D. Chien, W.R. Jong and, S.C. Chen: J. Micromech. Microeng. Vol. 15 (2005), p.1389.

[12] K.C. Lee, T.H. Kwon S.S. Lee and D.S. Kim: J. Micromech. Microeg. Vol. 12 (2002), p.236.

[13] J. Giboz, T. Copponnex and P. M´el´e: J. Micromech. Microeng. Vol. 17 (2007), p.96.

[14] M.C. Yu, W.B. Young and P.M. Hsu: Materials Science and Engineering A Vol. 460–461 (2007), p.288.

[15] C.H. Huang, Y.K. Shen, C.Y. Chang, C.H. Wu, J.H. Chen and, P.J. Guan: International Communications in Heat and Mass Vol. 35 (2008), p.1097.

[16] B.R. Whiteside, M.T. Martyn and P.D. Coates: Int. Polymer Process Vol. 20 (2005), p.162.

[17] J. Zhao, R. H. Mayes, G. Chen, H. Xie, and, P.S. Chan Polym. Eng. Sci. Vol. 4 (2003), p.1542.

[18] J. Zhao, R. H. Mayes, , G. Chen, , P. S. Chan, and, Z. J. Xiong: Plast. Rubber Compos. Vol. 32, (2003), p.40.

[19] V. Kalima, J. Pietarinen, S. Siitonen, J. Immonen, M. Suvanto, M. Kuittinen, K. Mo¨nkko¨nen and T.T. Pakkanen: Optical Materials Vol. 30 (2007), p.285.

DOI: 10.1016/j.optmat.2006.11.046

[20] H. Oktem, , T. Erzurumlu and, I. Uzman: Materials and Design Vol. 28 (2007), p.1271.

[21] W. Michaeli, , A. Spennemann and, R. Gartner: Microsyst. Technol Vol. 8, (2002), p.55.

[22] W. Michaeli and, A. Spennemann: Journal of Polymer Engineering Vol. 21, (2001), p.87.

[23] P.C. Chang, S.J. Hwang, H.H. Lee and D.Y. Huang: Journal of Materials Processing Technology Vol. 184 (2007), p.163.

[24] C.K. Huang: Journal of Micromechanics and Microengineering Vol. 17 (2007), p.1518.

[25] Y.C. Su, J. Shah and L. Lin: J. Micromech. Microeng. Vol. 14 (2004), p.415.