Why Should The Primer Be UV Sprayed Before Vacuum Coating The Plastic Substrate
Apr 02, 2021| Why should the primer be UV sprayed before vacuum coating of the plastic substrate
2, close the residue in the substrate to ensure the coating quality
The UV coating is used to seal the residue of plasticizer, corrosive gas and lubricant of demoulding agent in the substrate, so as to prevent the leakage of these volatile impurities in the substrate during vacuum coating or the use of the workpiece, which affects the coating quality.
The release of volatile impurities in the substrate will make the aluminized film color, discoloration, oxidation, blackening and so on, which will affect the metal texture and appearance effect of vacuum plating.
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