The glazing machine refers to a device that coats (or sprays, prints) a layer of colorless and transparent paint on the surface of the printed matter, protects it from drying and increases the gloss of the printed matter, and can enhance the appearance of the printed matter to a certain extent.
        The form of glazing machine is divided into three types: printing machine online glazing unit, special glazing machine and printing machine structure. Among them, multi-color printing machine online glazing unit, the structure has four-color, five-color, six-color plus one-color or two-color glazing unit, both water-based or partial UV glazing, oil- and solvent-based The glazing; high-brightness coatings and matt (matte) coatings, as well as drying equipment, high production efficiency and stable quality, greatly demonstrating the good production advantages of multi-color printing presses. Improve the market competitiveness of color prints. The ordinary glazing machine has simple structure, convenient operation and low equipment investment. It is a commonly used glazing equipment for packaging and printing. The product has wide adaptability and is suitable for large, medium and small printing and carton factories. The special glazing machine is divided into two types: manual paper feeding and automatic paper feeding. Some equipments can be used for glazing or partial glazing. It is necessary to make reasonable selection according to the actual production conditions of the factory to improve production efficiency.

          The glazing process of the glazing machine is to coat (or spray, print) a layer of uncoated transparent coating on the surface of the printed matter. After leveling, drying and calendering, a thin and uniform transparent bright layer is formed on the surface of the printed matter. Techniques and methods. When the glazing process of the glazing machine is leveled on the surface of the printed product, the smoothness of the surface of the printed product is enhanced, the printed texture is thicker and fuller, the color is more vivid and bright, the gloss and artistic effect of the printed matter are enhanced, and the printed product is enhanced. The appearance effect; the surface performance of the printed product is improved, and the function of protecting the graphic is improved; the grade of the product can be improved, and the added value is added.
          The glazing process of the glazing machine includes coating and calendering of the glazing coating. The process of coating glazing is actually a process in which a coating (commonly known as varnish) is applied to the surface of a paper print to be flat and dry. The coating calendering is a process of applying a calendering paint on the surface of a paper print by an ordinary glazing machine, and then drying it to a calender by means of a stainless steel strip, and then peeling off after cooling.
          The glazing process classification method of the glazing machine: according to the glazing coating, it can be divided into oxidative polymerization type coating glazing, solvent volatilization type coating glazing, photocuring type coating glazing and heat curing type coating glazing; Whole surface light, partial glazing, extinction and artistic glazing; the equipment used for glazing can be divided into: glazing on a separate glazing machine, glazing with a printing unit and a printing machine; The method can be divided into: spray coating glazing, printing coating glazing and special glazing coating glazing; according to the printing input mode, it can be divided into manual paper feeding and automatic paper feeding.

          The glazing machine is an important equipment for surface finishing processing of packaging products such as cartons and cartons. It plays an important role in improving the surface properties of printed products and improving the wear resistance, stain resistance and water resistance of printed products. . For printing and carton enterprises, choosing a glazing machine with excellent machine structure, stable performance, convenient operation, high production efficiency, wide applicability, and good energy conservation is of great significance for scientific and rational organization of production. .
          The glazing machine embosses the printed matter to enhance the appearance of the printed matter. The glazing of printed matter, including full glazing and partial glazing, also includes high-gloss and matt-type non-reflective gloss glazing. Either way, it can improve the appearance of printed matter, make the printed texture more thick and full, the color is more vivid and bright, improve the gloss and artistic effect of the printed matter, and beautify the product to make the product more attractive and enhance the consumer's Purchase desire.

         UV glazing machine is an important equipment for surface finishing processing of packaging products such as carton and carton. It plays an important role in improving the surface properties of printed products and improving the wear resistance, stain resistance and water resistance of printed products. effect.
        UV glazing machine 5 large structural features
        1. Combined with the characteristics of the printing industry at home and abroad, it is a paper surface UV oil glazing device, which adopts digital printing. After the machine treatment, it can improve the surface gloss of the printed matter, and has the functions of moisture-proof, anti-fading, anti-fouling and wear-resistant. PLG Control two tubes.
       2, very suitable for small printing enterprises, space station small investment costs are low.
       3. The UV glazing process is to coat (or spray, print) a layer of uncoated transparent coating on the surface of the printed matter. After leveling, drying and calendering, a thin and uniform transparent bright layer is formed on the surface of the printed matter. Technology and methods.
       4. During the glazing processing, due to the leveling of the paint on the surface of the printed product, the smoothness of the surface of the printed product is enhanced, the printed texture is thicker and fuller, the color is more vivid and bright, the gloss and artistic effect of the printed matter are enhanced, and the appearance of the printed product is enhanced. effect;
       5. Improve the surface performance of the printed products and protect the graphics; increase the grade of the products and increase the added value.

          UV varnish is a non-confining material in the correct storage environment and will cure immediately after exposure to ultraviolet light, such as sunlight, electric arc, or UV light. Illumination sources such as fluorescent lamps and incandescent lamps used in general operation rooms do not cause UV varnish to solidify.
          1. Special printing materials such as gold cardboard and PFT should be made of special UV coating according to their surface properties.
          2. Care should be taken to clean the shaft head from time to time. Because the UV varnish flows to the rotating part of the UV glazing drive shaft, it will stick to the drive shaft at high temperatures, affecting the transmission.
           3. The UV varnish that is scraped off during glazing will bring the ink that has been printed on the substrate to the UV varnish on the glazing machine, so that the varnish is colored, and after filtration and precipitation, these Varnish can also be used.
          4. The normal use temperature of UV varnish is 50-55 °C. When using at low temperature in winter, it is necessary to use circulating water to heat the UV varnish to make the viscosity reach the designed viscosity, which is beneficial to the smoothing and rapid curing of UV varnish. .
          5. The UV glazing machine should be placed in a position where the sunlight cannot be directly irradiated, otherwise the UV varnish will solidify on the coating roller under the action of ultraviolet light in the sunlight. If you can't avoid direct sunlight, you should also use red and black curtains to block the sun's rays.
          6. Photoinitiators and thinners in UV varnish have a certain stimulating effect on human skin. Therefore, in the glazing operation, if the skin touches the UV varnish, it should be washed off immediately with soapy water, otherwise the skin may become red and swollen.
          7. The viscosity of UV varnish varies depending on the type of UV glazing machine. Special varnish should be selected according to the model of the glazing machine. If the viscosity of the UV varnish does not reach the viscosity required by the glazing machine, it can be detached with a thinner or thickened with a thickener. However, this adjustment will lose the curing speed, brightness and adhesion of UV varnish. It is not recommended to replace the appropriate special varnish.
         8. When the UV varnish is irradiated through the UV lamp, the optimum temperature should be 50-60 ° C, because at this temperature, the UV varnish cures quickly and the adhesion after curing is strong. That is to say, under the UV lamp, the lower the temperature, the better. Especially in the case of glazing in low temperature workshops in winter, the adhesion is not good and the leveling is not good. The main reason is that the temperature is too low and the curing effect is poor.