In the process of printing cosmetic Tubes, the types and properties of the light coatings are different. Even if the process conditions are the same, the film layers obtained after coating and calendering are not the same. The viscosity of the above light paint has a great influence on the leveling and wettability of the paint. The absorption rate of the same absorption strength paper on the glazing coating is inversely proportional to the viscosity value of the coating, that is, the smaller the viscosity value of the coating, the larger the absorption rate will cause the leveling to end prematurely, resulting in some local defects of the surface of the blank Tube. It affects the smoothness and brightness of the film after drying and calendering.

The glazing coatings with different surface tension values have different effects on the wetting, adhesion and impregnation of the same Tube, and the film forming effects after coating and calendering are also different. A glazing coating with a low surface tension value that wets, adheres, and saturates the solid surface and graphic ink layers of various types of printed matter, and can be leveled into a smooth and uniform film surface. On the contrary, it will affect the film quality.

In addition, the volatility of the solvent also has an effect on the quality of the film. The volatilization rate is too fast, which will make the coating layer less than leveling into a uniform film surface. On the contrary, it will cause insufficient drying of the glazing coating, the hardened conjunctiva is blocked, and the anti-sticking property is poor. Lisson Packaging Own rich experience in process cosmetic tube printing and offer professional printing advice for our customers.