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Simulation of the Solidification Kinetics and Crystallisation Kinetics at Injection Moulding

During the moulding process of semi-crystalline plastic parts inner structures are locally created during solidification. These local structures dominate the final parts properties to a great extent. A big influence in this is the crystallisation process during the cooling of the part. The crystallisation by the spherulite growth plays a dominant role. A model to predict the spherulite growth was implemented by us in a three-dimensional injection moulding simulation tool using the Finite Element Method. The implementation and first results are presented and discussed in this paper.