Investigation on the influences of injection moulding process parameters on the short-shot filling of polymeric micro features
Eladl Abdelkhalik Mohamed (1)*, Tosello Guido (2), Islam Aminul (2), Mostafa Rania (3), Soltan Hassan (3), Hansen Hans (2)
(1) DTU and Mansoura University - Faculty of Engineering - Denmark - Denmark, (2) DTU - Denmark - Denmark, (3) Mansoura University - Faculty of Engineering - Mansoura - Egypt
Micro injection molding is known to be one of the most important mass production technologies because of its high productivity with many applications in industries. Mould filling of micro-features is one of the most important process characteristics. This paper investigates the effects of four processing parameters on filling behavior presented by part mass and runner mass on micro finger test structure moulded with Acrylonitrile Butadiene Styrene (ABS) using DOE approach. In particular, the following factors are considered: injection speed, holding pressure, melt temperature and mould temperature. The study revealed that holding pressure and melt temperature are the most influential parameters increasing the magnitude of the part mass for all short shot stroke. Melt temperature is the most influential parameters decreasing magnitude of the runner mass for all short shot stroke and it the especially at 7 mm and 8 mm. From 9 mm to 13 mm short shot stroke holding pressure is the most influential parameters for increasing the runner mass.