Abstract:
In plastic injection forming, the problems found in the mold design stage are the
capability of plastic flow and the cross-section of flow channel. Different cross-section
of flow channels will result in different flow distance.
This research uses Computer Aided Engineering (CAE) technology for design
analysis and construction of spiral injection molding. The materials used in this study
in order to find the effects on the capability of plastic flow are Polypropylene (PP) and
Polystyrene (PS). The variables used in this spiral injection mold consist of melt
temperature, mold temperature, and cross-section of flow channel. Moreover, a
comparison between the result of plastic flow using Computer Aided Engineering
(CAE) program and the results from an actual experiment is presented in this thesis.
The result from the experimentation, if cross-section is changed from rectangular
to circular shape, shows higher effects on flow distance than melt temperature or mold
temperature. That is, when the cross-section is change, the flow distance increase 76%.
However, the increase in melt temperature will cause the flow distance to increase
35%. And the increases in mold temperature will 1% of increase in flow distance. The
comparison between results Computer Aided Engineering (CAE) and the actual
injection experiment shows small difference.