The appropriate parameters were adjusted to reduce the warpage defect on the tensile test specimen of dumbbell.
The type of injection moulding machine used in this research is Arburg 420C 800-250C.
The most influential factor, that affecting warpage is holding pressure with 33.68% of the contribution.
In the other hand, injection holding with 44.25% of contribution, need to be closely monitored if the manufacturer needs to control shrinkage.
The findings of this project shall be good enough to be used as reference in producing similar product in future.
The optimization of processing parameters on warpage of polypropylene (PP) in the application of injection moulding machine was studied.For information combination on several parameters of plastic products formation the Venn diagram has been used. more Plastic products formation process duration is the important parameter of technological injection molding.For information combination on several parameters of plastic products formation the Venn diagram has been used.It is found that the optimum parameters setting that have been obtained were inject...Plastic products formation process duration is the important parameter of technological injection molding.The diagram contains the whole set of possible parameters (sample space).Having chosen rational parameters for optimum duration achievement of formation process, it is offered to formalize them by means of information model. However, in general once a few optimally located sensors are placed, the quality of the estimate does not improve significantly by adding more sensors. The objective of this research is to explore the effects of parameter settings towards the quality of thermoplastics snap fit samples through practical injection moulding.The quality of samples was gained by measuring the value of shrinkage and warpage.To measure the warpage of the dumbbell, digital height gauge was used to measure the flatness of the part surface.According the analysis of variance (ANOVA), the most significant factor that effect the warpage was holding pressure by 57.82%, followed with back pressure by 25.75%, clamping pressure by 16.27% and injection pressure by 0.16%.