Spritzgießverfahren sowie danach hergestelltes Spritzgußteil

摘要

The invention relates to a process for producing an injection moulding having at least two parts of different synthetic material. This may, in particular, be a cock (2) with an outer housing (4) and a plug (5) rotatable therein. In this production process, an outer section (4) is initially moulded in a first injection moulding process and then, in a second injection moulding process, the inner component (5) is moulded by injection of a synthetic material with a greater moulding shrinkage than that of the outer component into an inner chamber (17) of the outer component. In order to seal the components against each other despite this different moulding shrinkage, sealing regions with oblique surfaces (12) are formed between the two components by the shrinkage of the material of the inner component. A filler (16) with a comparatively low moulding shrinkage may be inserted into the inner component with a high moulding shrinkage so that only minor dimensional changes take place in the inner component during cooling.