However, the UV-printer coating on the background wall does not appear for a long time, and the quality of the coatings sold on the market is uneven. The inferior coating not only damages the quality of the printed product but also causes damage to the machine. How to choose the right UV flatbed printer coating is the information I want to share with you below. Please pay attention to the following six aspects:
First, adhesion: There are many ways to measure adhesion, such as the Baige method. If the quality of the printed product is high, it is also possible to test whether the printed product has been invaded or the boiled painting surface has fallen off. Adhesion is the key to measuring the quality of a UV flatbed printer. A good quality coating should pass the 100-gram test and will not fall off after soaking in water or boiling water.
Second, leveling: leveling is a common performance indicator in paints, which means that the paint is painted or sprayed on the surface of the object, and the brush marks and spray mist appear on the film are automatically flowed into The ability to flatten smooth surfaces. The coating of the UV flatbed printer with poor leveling affects the decorative effect of the printed matter. More importantly, if the brush marks on the surface of the coating do not disappear automatically, the uneven coating surface may rub the UV flatbed printer nozzle, resulting in huge loss. High quality coatings should be formulated to quickly level off after painting or spraying.
Third, film-forming transparency: As a high value-added decorative product, the requirements for appearance are generally high. This requires that the UV flatbed printer coating film is colorless and transparent. There are some epoxy-based two-component coatings on the market that form yellowing and affect the decorative effect.
Fourth, weather resistance: For UV printing products, especially for outdoor signs, billboards, printed materials must be bright and new for a long time, and do not fade. Specifically, this requires that the UV flatbed printer coating be resistant to ultraviolet light. Some coatings now turn yellow under long-term lighting conditions and are not suitable for outdoor use. Even for UV-printed products that are used indoors only, it is generally necessary to consider the use of weather-resistant UV flatbed printer coatings to ensure product quality.
Fifth, product safety: This is a problem that must be considered. The solvent-based UV flatbed printer coating not only has a large odor, but also poses a safety hazard in the case of improper storage, and transportation is also inconvenient. Because of the high investment in UV flatbed printers, it is best to consider safe aqueous UV flatbed printer coatings when choosing UV printer coatings. If a solvent-based coating is necessary, it is recommended to store it separately from the UV printer to prevent potential safety hazards.
The coatings of different materials are also different, and the performance of the ink should be considered. Common coatings include metal coating, ABS coating, leather coating, silicone coating, glass coating, PP coating, etc. These are the six, so the adhesion is good, and the coating chosen is also crucial.
