Injection Moulding Synthesis

LITERATURE REVIEW
Gurjeet Singh, M. K. Pradhan, Ajay Verma: Effect of Injection Moulding Process Parameter on Tensile Strength Using Taguchi Method.:. The experiments were designed with Taguchi’s orthogonal array to achieve the result with least number of experiments. Plastic material polypropylene is studied. Tensile strength test of material is done on universal testing machine, which is produced by injection moulding machine. By using Taguchi technique with the help of MiniTab-14 software the best value of injection pressure, melt temperature, packing pressure and packing time is obtained. they found that process parameter packing pressure contribute more in production of good tensile plastic product. They concluded that the Plastic injection

The study aims to determine the optimum process parameters for the rHDPE in the application of injection moulding process. Taguchi method is adopted to optimize the process parameter combination from the four controllable process parameters, namely the melting temperature, packing pressure, packing time and injection pressure. The effects of the process parameters are evaluated and benchmarked against the established mechanical properties and dimensional stability of the moulded plastic tray from virgin source. The result of the study reveals that the qualities of the moulded rHDPE plastic tray are good and optimized under the process combination of the melting temperature of 513.15 K, packing pressure of 70%, packing time of 30 s and injection pressure of 15 MPa for the shrinkage; mean while the combination of melting temperature of 518.15 K, packing pressure of 85%, packing time of 30 s and injection pressure of 15 MPa for the tensile strength and lastly, the combination of melting temperature of 518.15 K, packing pressure of 80%, packing time of 10 s and injection pressure of 14 MPa for the flexural strength. The feasibility to injection moulded rHDPE and optimize the process parameters shows huge potential of using rHDPE