Application of the Fluid Injection Technique (GIT/WIT) at bifurcated and ring-shaped moulded parts

Walter Michaeli, Oliver Gröenlund, Tim Jüentgen

Institute of Plastics Processing (IKV) at RWTH Aachen University

Pontstraße 49, 52062 Aachen, Germany

Abstract

Conventional injection moulding has not been able to meet the permanently rising demands on parts in terms of complexity and integration of functions. In this context specialty injection moulding processes offer new potential to produce complex, highly integrated parts fully automated in virtually one process step. The Fluid Injection Technique as a specialty injection moulding process is utilised whenever sink marks should be prevented, warpage compensated, cycle time reduced, material saved, cavity pressure reduced or thick walled sections need to be integrated. Bifurcated or ring-shaped parts constitute an important field of application for injection moulded parts, but are critical to manufacture by means of Fluid Injection Technique (FIT). The paper gives an insight into the challenge of the application of FIT and presents different investigations dealing with this problem.