What are the special requirements for applying uv inks?

  1. Requirements for storage conditions, the uv ink curing issues mentioned,

printing stability, etc. all require an important premise, that is, good ink storage conditions.

According to experience, the best storage temperature of uv ink is best controlled

at 20-25°C, avoid sunlight, the best relative humidity should be controlled at 55%-65%,

sealed storage, avoid dust mixing, and uv ink storage warehouse It is best to maintain

constant temperature and humidity.

  At the same time, it should also be noted that the uv ink storage warehouse should

be kept away from fire and heat sources to prevent accidents. The storage and use

management of uv inks should also follow the "first in, first out" principle, that is,

the uv inks purchased first should be used first, in order to prevent the quality of

uv inks from being affected by the long storage time. The remaining uv ink after

printing must be sealed and stored in a dark place. UV ink is not suitable for

long-term storage, and should be used before its shelf life. The longest shelf life

should not exceed one year. Otherwise, once the uv ink deteriorates, it will not only

affect the printing quality, but even cause printing failures in severe cases.

  2. Requirements for printing equipment Compared with ordinary inks, the application

of uv inks has certain requirements for printing equipment. For example, at present,

many printing companies realize uv printing by installing uv curing devices on ordinary

offset printing machines, but there are many problems in this equipment transformation

method, such as uv ink is highly corrosive, which may cause ordinary rubber rollers and

blankets to swell , affect the stability of the printing pressure, and even cause peeling or

surface cracking of the rubber roller in severe cases. Therefore, uv ink printing has

extremely high requirements on rubber rollers and blankets, and generally requires

the use of special rubber rollers and blankets for uv printing. UV ink has high viscosity

and strong corrosiveness, which not only easily cracks and damages the ordinary ink

fountain, but also causes uv ink to flow into the ink tooth transmission mechanism,

causing the ink tooth drive motor to fail due to excessive resistance, and the rubber roller

adjustment mechanism and the string ink roller swing Bodies are also vulnerable

to damage. Once these faults appear, it will be more troublesome to deal with them.