IIMC 2021 will focus on the main challenges facing the injection moulding industry: Digitalisation of production, additive manufacturing and 3D printing, modelling and simulation as well as resource efficient production. Since its initiation in 2014, the IIMC has proved a great success both as an inspiring forum for cutting-edge technological innovations in injection moulding as well as a meeting point for leading experts and scientists from all over the world.