High resolution thermoplastic rapid manufacturing using injection moulding with SU-8 based silicon tools

Simulation Tools for Injection Moulding

In this paper the concern is certain simulation tools for the lling phase of injection moulding of plastics. A mathematical model, called the distance model, of the injection moulding process has been developed by Professor Gunnar Aronsson at the University of Linkk oping. From this model one can nd the lling pattern (i.e. ow fronts) of the molten polymer as it enters the mould, by solving a sh...

Predicting Product Quality with Backpropagation" A Thermoplastic Injection Moulding Case Study

This application uses live data from a thermoplastic injection moulding manufacturer to examine the feasibility and effectivehess of using backpropagation artificial neural networks for predictive quality control. Preprocessing and post processing of live data, formulating neural predictive strategies, selecting architecture and parameters, and handling of temporal aspects are topics. Performan...

A Manufacturing Process for Precision Engineering Components METAL INJECTION MOULDING

Comparison of Polyjet Printing and Silicon Moulding as Rapid Plastic Moulding Solutions

The aim of the present investigation is to compare two rapid molding (RM) solutions, namely polyjet printing (PP) and silicon molding (SM), for the manufacture of plastic components. The comparison has been made on the basis of dimensional accuracy (as per IT grades), mechanical properties (namely surface hardness, surface roughness) and production cost. The comparison of the experimental resul...

Manufacturing tolerances for UV LIGA using SU-8 resist

Abstract UV LIGA involves the exposure of SU-8 negative resist, using a UV mask aligner, to produce high aspect ratio pillars or microchannels as part of the manufacturing process for microsystems. This has been made possible by the widespread use of a UV sensitive resist SU-8. Many papers have been written on the Fresnel diffraction theory of exposure, some key properties of SU-8 and prototype...