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A Study of Plastic Processing and Tool Design for a Polypropylene Product

Injection moulding process needed for creation of selected polypropylene product is investigated in the paper. Material selection together with mixing ratios and their preparation for production process are shown. Influence of material composition on the quality of the product is discussed. Several parameters that the process uses are analyzed and a solution of a robust process for specified product is given. Tooling for mould cavity is investi-gated, modelled with Solidworks software and recommendations are given for improvement of the current and future designs. Temperature of the material and the liquefying – solidifying process of the melt is monitored and final shape errors discussed. The material required for each shot and moulding cycle is analysed and improve-ments implemented into design. A CAD design of mould is given and cycle time analysed. Mold flow simulation with MoldflowXpress that is found in Solidworks 2007 was also used in presented investigation.

injection moulding; 3D design; polypropylene; mould; plastic

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