![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
Varnishing is to apply a colorless and transparent coating on the surface of the printed matter that has been printed, and Shenzhen Printing Company obtains a bright film layer. When glazing, the leveling of the coating on the surface of the printed product enhances the smoothness of the printed surface, not only improves the surface gloss of the printed product, but also improves the surface performance of the printed product, enhances the light resistance of the ink, increases the heat resistance of the ink layer and Moisture resistance has played a role in protecting printed graphics and beautifying products. It has been widely used in book cover processing and packaging and decoration, picture books, large decoration, posters and other printed surface processing.
There are many coating methods. Shenzhen printing company can be divided into oxidative polymer coating coating, solvent volatile coating coating, thermal curing coating coating, photo-curing coating coating and so on. According to the coating method, it can be divided into spray coating, printing coating and special coating machine coating. According to the glazing equipment, it can be divided into glazing machine and printing glazing linkage. In addition, according to the glazed products, it can be divided into whole surface glazing, partial glazing, extinction, and artistic glazing.
No matter what technical methods and materials are used for glazing, they require excellent glazing quality to achieve the intended purpose. From the material point of view, the main factors affecting the glazing quality are printing paper, printing ink and glazing paint with good glazing adaptability.
(1) Printing paper. Printing paper has the greatest influence on the glazing coating is the smoothness and surface absorption of the paper, they affect the leveling of the coating, and affect the coating to form a high smoothness bright film on the surface of the printed product. The smoothness of the paper of Shenzhen Printing Company is high, the surface of the paper is in good contact with the paint layer, and the paint is easy to level, thereby forming a high smoothness film surface. The surface of the paper is highly absorbent, and when the paint is leveled, the paper fibers absorb the paint too quickly, which makes the paint flow poor and difficult to level. On the contrary, the absorption of paper surface is weak, the paper fiber absorbs paint too slowly, the coating is not easy to congeal and solidify during leveling, and it is difficult to form a bright film with high smoothness. Therefore, different papers should choose the matching paint, adjust the process conditions such as glaze coating leveling time and drying temperature.
(2) Printing ink. The particle size of the ink affects the wetting effect of the ink layer and thus the leveling and brightness of the coating. If the ink particles are large, the surface of the printed product must be rough, not easy to wet, and not easy to level.
(3) Glazing paint. Glazing paint is also the main factor affecting the quality of glazing. The glazing paint of Shenzhen Printing Company must not only have the characteristics of colorless, odorless, non-toxic, strong gloss, chemical resistance, fast drying, etc., but also good transparency and not easy to change color , Has good flexibility, heat resistance, leveling, adhesion. The most important effect of glazing coatings on glazing quality is its viscosity, followed by surface tension and solvent volatility. The solvent in the coating will be less and less due to volatilization, penetration, diffusion and other effects, and the viscosity will gradually increase. The driving force for leveling is the surface tension of the coating. The surface tension flattens the traced surface into a smooth surface in the process of making the coating shrink to the smallest shape of the surface. Therefore, the surface tension of the paint has a greater effect on leveling.
Offer Hair Clipper Or Trimmer,Hair Clippers For Men,Hair Trimmer For Women From China Manufacturer
Hair Clipper Or Trimmer,Hair Clippers For Men,Hair Trimmer For Women,Electric Hair Clippers
Ningbo Unibono Appliance Co.,Ltd , https://www.unibono.com