Process monitoring of microinjection moulding (μIM) is of crucial importance when analysing the effect of different parameter settings on the process and then in assessing its quality. Quality factors related to cavity pressure can provide valuable information about the process dynamics and also about the filling behavior of different polymer melts. In this paper, a pressure sensor mounted inside a tool cavity was employed to analyse maximum cavity pressure, pressure increase rate during filling and pressure work. The influence of four μIM parameters, melt temperature, mould temperature, injection speed, and packing pressure on these three pressure-related process parameters was investigated. A design of experiment study was conducted by moulding a test part, a microfluidic component, in three different polymer materials, PP, ABS, and PC. The results show a similar process behavior for all three polymers, in particular a higher injection speed led to a reduction of the pressure work while a lower mould temperature reduces the pressure rate.
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June 2011
Research Papers
Process Factors Influence on Cavity Pressure Behavior in Microinjection Moulding
S. S. Dimov,
S. S. Dimov
Manufacturing Engineering Centre,
Cardiff University
, Cardiff, UK
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S. Scholz,
S. Scholz
Manufacturing Engineering Centre,
Cardiff University
, Cardiff, UK
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H. Hirshy,
H. Hirshy
Manufacturing Engineering Centre,
Cardiff University
, Cardiff, UK
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G. Tosello
G. Tosello
Department of Mechanical Engineering,
Technical University of Denmark
, Kgs. Lyngby, Denmark
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S. S. Dimov
Manufacturing Engineering Centre,
Cardiff University
, Cardiff, UK
S. Scholz
Manufacturing Engineering Centre,
Cardiff University
, Cardiff, UK
H. Hirshy
Manufacturing Engineering Centre,
Cardiff University
, Cardiff, UK
G. Tosello
Department of Mechanical Engineering,
Technical University of Denmark
, Kgs. Lyngby, Denmark
J. Manuf. Sci. Eng. Jun 2011, 133(3): 031007 (10 pages)
Published Online: June 9, 2011
Article history
Received:
September 16, 2010
Revised:
March 16, 2011
Online:
June 9, 2011
Published:
June 9, 2011
Citation
Griffiths, C. A., Dimov, S. S., Scholz, S., Hirshy, H., and Tosello, G. (June 9, 2011). "Process Factors Influence on Cavity Pressure Behavior in Microinjection Moulding." ASME. J. Manuf. Sci. Eng. June 2011; 133(3): 031007. https://doi.org/10.1115/1.4003953
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