Abstract: The invention provides a method for producing a PVD anti-bacterial film on plastic. By adoption of the technical scheme, film plating can be achieved on the premise of not damaging a plastic workpiece without heating during the whole process, and a titanium target and a silicon target are used for plating a base film; plastic mainly contains a large quantity of carbon atoms and silicon atoms and has good bonding force, so that the bonding force of the film and the workpiece can be increased by plating the base film through the titanium target and the silicon target; a silver target is added for sputtering after the base film is plated, so that silver with an anti-bacterial effect is evenly distributed in a titanium silicide film, and the anti-bacterial film with the anti-bacterial effect is formed.

Abstract: A method for preparing a high-hardness anti-bacterial PVD film by deposition of a first anti-bacterial film layer on a workpiece with W—Ti alloy material, wherein W has high hardness and an extremely strong anti-bacterial property, and the combination of Ti and W can facilitate adhesion during the deposition of the anti-bacterial film, thus enhancing the PVD film effect; a second anti-bacterial film layer deposited on the W—Ti anti-bacterial film is W—Ti—Ag, and the addition of nano-silver in the second anti-bacterial film layer can enhance the anti-bacterial effect, and the high hardness of W can protect nano-silver; because of the anti-bacterial property of W itself, only a small amount of nano-silver needs to be added in the outermost layer, and as the price of W is lower than nano-silver in the market, the technical solution can lower the production cost of anti-bacterial film.