Development of an alternative process technology for foam injection moulding with physical blowing agents

W. Michaeli and S. Habibi-Naini

Institut für Kunststoffverarbeitung (IKV), Pontstraße 49,
D-52062 Aachen, Germany

1. Abstract

When processing physical blowing agents like carbon dioxide or nitrogen in a low pressure process like the foam injection moulding a special meaning comes to the treatment of the gas/melt-system. First of all it must be guaranteed that a sufficient quantity of blowing agent in the solve status is present. Second, a materially and thermally homogeneous melt needs to be provided in order to achieve an even foam structure and surface.

In this paper an IKV-development for FIM with physical blowing agents using a special injection nozzle is introduced. Results of investigations in this context will be presented.