UV ink is the most widely used ink for printing iron in the world. It has strong surface adhesion to non-porous agents, iron sheets, aluminum sheets and plastic sheets, and is often used for printing such articles.
Its biggest disadvantage is its poor chemical resistance, and many alkaline chemicals can attack it. Because the molecular weight is low, the polymerization time is longer. In other words, that is, the drying is relatively slow, but the curing speed is extremely fast with a single-line light solidification.

UV Ink and Traditional Ink
Generally speaking, UV drying inks have greater wear resistance than traditional solvent-based or epoxy inks. The best example is that the symbol of each key on the computer keyboard is printed with UV ink. A famous big company has done experiments,
Repeat the keyboard printed with UV ink and traditional ink with a mechanical finger. As a result, the keyboard symbols printed with traditional ink are worn out about 12 million times, while the keyboard symbols printed with UV ink are worn out about 13 million times. The wear resistance of UV ink is 1300% when the wear resistance of traditional ink is not only that, but its drying speed is greatly improved compared with that of traditional ink, from the original 7 minutes to 15 seconds, saving 96% time.
UV ink also has extremely high solvent resistance after drying. This solvent resistance stems in part from the high crosslinking density of the crosslinked dry ink layer. The higher degree of cross-linking makes the molecules unable to separate and dissolve each other under the action of the solvent. In addition, UV inks can also be used in conjunction with some solvent-resistant chemicals.
For the purpose of comparison, let's look at the situation after epoxy ink is replaced by UV ink. First, there is no need to mix ink before use. Secondly, of course, it saves time, because epoxy inks need to be dried for a long time under certain high temperature conditions, while UV inks dry almost instantly. This is also accompanied by another advantage, that is, the ink layer damage caused by heating is reduced. UV ink also saves the floor space of the drying workshop.
The formulated epoxy ink has another disadvantage, that is, poor stability. After mixing for a period of time, it will solidify into a ball in the ink bucket, and it must be stopped to clean the ink bucket, resulting in a waste of time and a decrease in production efficiency. But UV ink is different, its stability is very good, it can be said that there will be no condensation. The characteristics of UV ink and traditional ink are compared as follows:

category UV ink traditional ink (epoxy type)
Average Labor Value/Unit 0.001 US $0.12
Drying time/unit 2-4 seconds 10 minutes
Average power consumption (kWh/unit) 0.001-0.2
Dry site 1-3 square feet 200 square feet
Ink price $50/lb $28/lb
Solvent content 30% 60%
Drying system funds 5-10 thousand dollars 30-50 dollars

Of course, there are still some close-up factors to consider before converting the only ink. Such as the conversion to UV ink required equipment funding problems, measuring instruments and other issues. If the surface energy of the substrate is low, the surface must also be photochemically treated to ensure the adsorption of the ink, which requires the addition of some new quality control equipment. Therefore, it is recommended to do a good job of overall planning specifications before the conversion, not to rush.