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What are the requirements of vacuum aluminum plating for the substrate to be plated?

Due to the particularity of the vacuum evaporation process, it has the following requirements for the substrate to be coated: 1. Good heat resistance, the substrate must be able to withstand the radiant heat of the evaporation source and the latent heat of condensation of the evaporation; 2. From The volatile substances generated on the film substrate should be less; for the substrate with high hygroscopicity, it should be dried before evaporation; 3. The substrate should have a certain strength; 4. Good adhesion to the evaporation layer; 5 . For non-polar materials such as PPPE, surface treatment should be carried out before evaporation to improve the adhesion fastness of the coating. Oh

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