The influence of finishing operations on the surface quality of injected parts

Abstract

In the production of plastics tools, due to the high mould price, high demands are placed on cost reduction or shortening mould production times. The price of the injection mould is reflected not only in the price of used injection material but also in the price of its own production. Mould form cavities were made with different materials and different machining technology (finishing methods). Various polymeric materials were injected into the cavities thus prepared, and the surface quality of the samples was evaluated and compared to the quality of the surface cavities, thereby verifying the copying of the surface of the mould cavity onto the surface of the polymer product. The aim of this article is to determine the impact of technological conditions on the quality of the plastic tool (injection mould) and the future polymer product. In this experiment, they were made by different technological conditions of the shape cavity and their influence on the resulting roughness parameters of tested samples was determined.