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The newly developed “integrated metal/plastic injection moulding” allows the manufacturing of plastics/metal-hybrids combining the injection moulding of plastics with the pressure die casting of metals on one machine. The materials plastic and metal are combined in a specially designed multi-component injection mould. In a first step the plastics preform is moulded. In the second step, the injection of the liquid low melting tin-zinc metal alloy enables the integration of full metal areas, preferably working as electrically conductive tracks. For applications in electric devices a certain bond strength between plastics carrier and metal conductor is demanded. This article is focused on different surface treatment techniques to improve the achievable bond strength between the thermoplastic and the metal component. Refereed/Peer-reviewed