Automotive lights include automotive lamps and lanterns reflective film, reflectors, front lights, rear lights, turn signals, license plate lighting, etc. Headlights include: low beams, front turn signals, front position lights (also called width lights, position lights indicating the presence of the vehicle), front fog lights. Rear lights include rear guard lights, reversing lights, brake lights, rear fog lights, rear turn signals, etc. These lamps can be coated by pvd coating machine. Car headlights can play the role of lighting on the road at night and showing the width of the vehicle. The parts that need to be aluminized are mainly reflectors and their reflective sight rings and decorative sight rings. Fog lights are turned on in weather conditions with low visibility such as rain, fog, and snow, and act as a warning to the front and rear vehicles. The aluminum-plated parts are mainly reflectors, and the taillights of the car include turn signals, brake lights, rear fog lights, reversing lights, etc., which play the role of warning the traffic signals behind, and the aluminum-plated parts are mainly the lamp body.

Aluminum coating method of pvd coating machine for automobile lamps:
       The thickness of the aluminized film of automobile lamps is 0.4——1.2μm, the surface is flat and has high gloss. The aluminum plating method is divided into two types: no bottom plating and bottom plating. The choice of aluminum plating method is related to the properties of the substrate.
Polyesters (such as PET, PBT, PC) are polar polymers with high surface free energy, surface wet tension above 40dyn/cm (1dyn/cm=1mN/m), and good adhesion to the aluminized layer , can be used for bottomless plating. That is, the substrate (such as PC polar polymer) is directly plated with aluminum and then a protective film is plated. The aluminized protective film can improve the mechanical strength of the aluminum film, block harmful gases (such as O2 in the atmosphere) or the erosion of the aluminum film by substances [6], etc., so that the coating has a bright metallic luster, excellent gas and light barrier properties. , Good moisture resistance, heat resistance, puncture resistance, articles are not polluted, corroded during transportation, storage and use, and keep smooth and shiny.
Since the main chain of PC contains ester groups, the water absorption rate of the substrate is relatively high (0.15%--0.19%) under a certain humidity and normal temperature environment. It is best to carry out aluminum plating within 2 hours of the product after injection molding, and the storage time is long. However, there will be fogging after aluminum plating caused by the absorption of water by the substrate. Polyolefin materials such as PE, PP, and ABS are non-polar polymers with small surface free energy, low surface wet tension (generally 30 dyn/cm), roughness, and poor adhesion to the aluminized layer. After pre-coating the primer, a smooth and flat coating can be obtained, with a mirror effect, which can cover the substrate and prevent the volatile impurities in the plastic substrate from escaping during vacuum coating, which affects the coating quality. Therefore, such materials are generally pre-primed and then aluminized to improve the adhesion between the coating and the substrate. At present, acrylate primers are widely used in China, and the primer formulations are adjusted according to the type of substrate, mainly thermal curing primers and ultraviolet (UV) curing primers, which have good applicability.
Most of the plastic parts of lamps and lanterns are pre-painted and then plated with aluminum, and then plated with a protective film. The essence of the protective film is silicon dioxide. The SiO2 film has good protection and can keep the aluminum film intact in 10% alkaline solution. In order to reduce the process of pre-coating the primer and reduce the production cost, some people
Developed PBT primer-free material and made new progress. No matter which method is adopted, the adhesion test of the aluminum-plated parts should be carried out, and the qualified ones can be used.
        The above is the introduction of the application of aluminum coating of the pvd coating machine for automobile lamps and the method of aluminum coating, as well as where the coating lights can be coated. I hope that this introduction will give you a new understanding of the aluminum coating of the pvd coating machine for automobile lights.