Common surface treatments for plastic tableware include […]
Common surface treatments for plastic tableware include electroplating, fuel injection, printing, water transfer printing and other surface treatment processes. In life, we should paint the surface of plastic.
The purpose of spraying plastic tableware is to form a strong continuous coating on the surface to play its decoration, protection and other special functions.
Whether the plastic has crystallinity has a great influence on the adhesion of the paint film, and the adhesion performance of the paint film with high crystallinity is poor, and the surface layer coating is relatively good when the crystallinity is low. In addition, the surface energy of plastics is usually low (such as nylon and PP), which is not conducive to the adhesion of the coating, and the adhesion between the substrate and the coating is poor.
The most direct effect of the difference in adhesion is the application of paint on the surface, but the ideal surface treatment effect cannot be achieved.
The effective way to improve the adhesion is to improve the adhesion by pretreating the substrate in the actual production of coatings. Compared with electric fish and polishing, the commonly used methods are corona, flame, sanding, adhesion promoter and so on.
In the treatment mode, a layer of enamel treatment agent adhesion promoter is sprayed between the substrate and the paint, the process operation is simpler, the effect is more stable and controllable, so it is widely used in the coating industry.