The characteristics of glazing and the main factors affecting the quality of the coating

Shining applied a colorless, transparent coating to the surface of printed products that had already been printed. Shenzhen Printing Company obtained a bright film layer. Due to the leveling of the coating on the surface of the printing product, the smoothness of the surface of the printing product is enhanced, not only the surface gloss of the printed product is improved, but also the surface properties of the printed product are improved, the light resistance of the ink is enhanced, and the heat resistance of the ink layer is increased. The ability to prevent moisture has played a role in protecting printed graphics and beautifying products. It has been widely used in the surface processing of book cover processing and packaging decoration, pictures, large-scale decoration, posters and other prints.

There are many ways to polish, Shenzhen Printing Co., Ltd. according to the coating coating can be divided into oxidation polymerization coating coating, solvent evaporation coating coating, heat curing coating coating, photocurable coating coating. According to the coating method, it can be divided into spray coating glazing, coating glazing and special glazing coating. According to the glazing equipment, it can be divided into glazing machine and printing glazing unit. In addition, the glazing products can be further divided into the entire surface of light, local glazing, extinction, artistic glazing.

No matter what technology method or material is used, it requires excellent glazing quality to achieve the intended purpose. From the material point of view, the main factors affecting the quality of glazing are printing paper, printing inks and glazing coatings with good glazing suitability.

(1) Printing paper. The greatest impact of the printing paper on coating is the smoothness and surface absorption of the paper, which affects the leveling of the coating and affects the formation of a high smoothness film on the surface of the print. Shenzhen Printing Co., Ltd. has a high degree of smoothness, and the surface of the paper is in contact with the paint layer. The paint is easy to level, resulting in a high smoothness film surface. The surface of the paper is highly absorptive. When the coating is leveled, the paper fiber absorbs the coating too quickly, which makes the paint flow poor and difficult to level. Conversely, the surface of the paper is poorly absorbable, and the paper fiber absorbs paint too slowly. In the leveling coating, the paint is not easily congealed, and it is difficult to form a glossy film with high smoothness. Therefore, different paper should be selected to match the coating, adjust the coating coating leveling time, drying temperature and other process conditions.

(2) Printing inks. The particle size of the ink affects the wetting of the ink layer and thus affects the leveling and brightness of the coating. If the ink particles are large, the surface of the print must be rough, not easy to wet, and difficult to level.

(3) Coatings. Coating coating is also the main factor affecting the quality of coating. Shenzhen Printing Coating Coating Co., Ltd. not only possesses colorless, odorless, non-toxic, strong gloss, chemical resistance, fast drying, but also has good transparency and is not easy to change color. , Has good flexibility, heat resistance, leveling, adhesion. The most important effect of coating coating on coating quality is its viscosity, followed by surface tension and solvent volatility. The solvent in the coating will be less and less due to volatilization, infiltration, and diffusion, and the viscosity will gradually increase. The driving force for leveling is the surface tension of the coating. The surface tension flattens the surface of the trace to a smooth surface during the process of shrinking the coating to the smallest surface shape possible. Therefore, the surface tension of the paint has a greater influence on the leveling.