Vacuum metallizing is used for different plastics. The most common technology we use is aluminum evaporation. We can get chrome like color on plastics very fast in a metallizing machine. The raw material is usually aluminum. The added value for plastic items are not high, so we usually make metallizing machine with big vacuum chambers to improve the production output.
Protective painting is necessary for plastic items. The higher vacuum we obtain during PVD coating, the colors will be more bright. And with lower vacuum when coating, the color of coatings will be more dark.