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Process factors influence on cavity pressure behavior in microinjection moulding

Griffiths, Christian Andrew, Dimov, Stefan Simeonov, Scholz, Steffen Gerhard, Hirshy, Hassan and Tosello, G. 2011. Process factors influence on cavity pressure behavior in microinjection moulding. Journal of Manufacturing Science and Engineering 133 (3) , 031007. 10.1115/1.4003953

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Abstract

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.

Item Type: Article
Status: Published
Schools: Business (Including Economics)
Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TS Manufactures
Uncontrolled Keywords: microinjection moulding, process monitoring, cavity injection pressure
Publisher: ASME
ISSN: 1087-1357
Last Modified: 05 Jan 2018 21:00
URI: http://orca-mwe.cf.ac.uk/id/eprint/15555

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