Because the surface of the plastic part is the reproduction of the surface of the mold cavity of the plastic mold, if the surface of the plastic mold has scratches, corrosion, micropores and other defects, it will be copied on the surface of the plastic parts, producing bad luster. If the surface of the cavity is oily and moist, the surface of the plastic part will be dark. Therefore, the cavity surface of plastic mould should have good finish. The surface of die cavity must be kept clean and oil and water stains should be removed in time. The type and amount of release agent should be appropriate.

The temperature of plastic mold also has a great influence on the surface quality of plastic parts. Generally, different types of plastics have different surface gloss under different temperature conditions, and the injection mold temperature cannot be too high or too low, which may lead to poor gloss. Visit Link: https://www.jasonmolding.com/how-to-solve-the-matte-surface-of-plastic-injection-parts-2/