Injection moulding of plastic two material parts, e.g. vehicle indicator light covers

摘要

A method of injection moulding of plastic parts of box, cask or cover types consists of moulding a top (2) which defines an anchorage means (3) and over-moulding onto the top, which has been submitted to a retraction, a part (1) having a complementary anchorage means to that of the top and consisting of a material that presents at the moment of injection a retraction greater than that resting in the top previously moulded.