Adhesion is fundamental
There are various methods to measure the adhesion of waterproof metal UV coating solution. If there are high requirements for the quality of printed products, you can also test whether the printed product’s picture will fall off after being soaked in water or boiled. Adhesion is the key to measuring the quality of waterproof metal UV coating solution. High-quality coatings should pass the cross-cut test and not fall off after being soaked or boiled.
No traces
The uneven surface of the coating may rub against the nozzle of the UV printer. The waterproof metal UV coating solution with poor leveling property will affect the decorative effect of printed products. More importantly, if the brush marks on the surface of the waterproof metal UV coating solution do not disappear automatically, it will cause significant losses. High-quality coatings should have a tight formula and quickly level off after brushing or spraying. There are many coatings on the market that are wiped with a dust-free cloth. The leveling property of such coatings will be much better.
Good transparency
UV printed products generally have high requirements for appearance. This requires the UV printer coating to form a colorless and transparent film. Now there are some two-component coatings based on epoxy resin on the market that turn yellow when formed, which, as high-value-added decorative products, affect the transparent effect.
Strong Weather Resistance
Especially for signs, billboards, and printed products used outdoors, they must be as bright as new for a long time. For UV printed products, waterproof metal UV coating solution should not fade. Specifically, this requires the UV printer coating to have the function of resisting ultraviolet rays. Now some coatings will turn yellow under long-term light conditions and are not suitable for outdoor use. Even for UV printed products used only indoors, it is generally necessary to consider using waterproof metal UV coating solution with weather resistance to ensure product quality.
Easy to use
Compared to multi-component products, there are currently two-component and multi-component waterproof metal UV coating solutions on the market. Single-component UV printer coatings that do not require configuration have greater advantages in use.
Environmentally friendly
This is a problem that must be considered if good ventilation effects are not achieved. Most inkjet printing workshops are relatively enclosed spaces. Employees are in them for a long time, so the product must be a green, environmentally friendly, and non-toxic product.
The successful application of UV printing technology in many new industries mainly depends on the technological breakthrough of waterproof metal UV coating solution and UV coating.
