UV flatbed printers are very widely use and can print patterns directly on many materials, but not all materials can be printed. If the ink is printed directly on a very smooth surface such as glass or metal, the ink is scattered and will not be formed. Some very smooth materials require a layer of coating on the surface to achieve the effect of flat printing.
What is a coating? The uv printer coating is a solid continuous film obtained by one-time spraying. The function of the coating is to absorb ink and image and increase adhesion. The coating is specially used to wipe the liquid on the surface of the substrate. By slightly corroding the surface of the material, the surface smoothness and density are reduced, thereby improving the adhesion of the ink and allowing the pattern to adhere to the surface of the substrate for a long time. Avoid problems such as shedding and discoloration.
Why use coatings? The imaging method of the uv printer is inkjet printing. In order for the image to be perfectly reflected in the printed object, the ink must be fully absorbed on the surface of the medium. However, due to the diversity of print media materials, not every material can directly absorb the printing ink. In order to make the ink suitable for any material and better display the effect of the printed image, the printing surface of the media must be performed before the media is printed. Coating to achieve the characteristics of flatbed printers. The coating is a specially developed volatile liquid with extremely high transparency and very thin thickness. It can be applied to the surface of media of various materials without damaging and changing the properties of the media. It can well express the perfect image effect.
Before coating the printed material, the surface of the material must be treated to ensure a clean working environment. The coatings used in daily production are: glass coating, metal coating, ceramic tile and other coatings. It must be noted that the coating is targeted. One material can usually only be matched with one coating, and cannot be matched at will.