Evaporative vacuum coating is the use of vacuum coating machine of hot evaporator to produce coated glass. Because the overall production is intermittent, the cleaned part of the glass often needs to wait for a period of time in the workshop before it can be coated in the coating room. At this time, the glass will be subject to secondary pollution, resulting in the polluted part of the film coating easy to fall off, the uniformity of the film layer is poor, easy to have rainbow color difference and high reflectivity, and glass plating only a layer of film, easy to change color in the air and can not produce large specifications of glass. Such coated glass is not easy to make curtain wall glass.
Vacuum magnetron cathode sputtering method: The use of magnetron cathode vacuum coating equipment will plate glass in the vacuum chamber with high vacuum, in the negative voltage between the two poles of the positive ions fly to the cathode under the action of orthogonal electromagnetic field. The sputtered secondary electrons move along the rotating wheel line under the action of electromagnetic field to participate in collision ionization and generate charge carriers. In this way, the cathode can be continuously bombarded to provide sufficient number of positive ions, and the plasma region formed can make continuous glow discharge. It can complete multilayer coating at once, with excellent film uniformity, excellent edge coverage and good adhesion. Therefore, the corresponding point magnetic potential is more stable, in order to produce a uniform and firm coating layer.