UV Printing FAQ Analysis and Resolution (3)

The main causes of ink dripping and ink loss are the following:

1 The proficiency of the operator. Different types of materials, different ink layer thicknesses and different printing graphics have different requirements for UV drying devices. In the printing press, the power of UV curing, the printing speed and the thickness of the ink layer can be adjusted. If the operator does not handle each other well, the effect of UV drying can be affected.

2 ink quality. Currently, there are many suppliers of UV inks on the market, and the quality is not the same, and the drying speed and curing degree of different colors of the same manufacturer are not the same. Ink does not dry out due to the ink itself (especially black ink), even if a famous supplier occasionally has such problems.

3UV curing device.

A, UV lamp aging, output power less than the design power, energy is not enough.

B. Excessive dust in the UV device affects the output power of the UV light source.

C, UV device output power is small, can not meet the requirements of ink curing.

4 material aspects. The surface tension of printed materials, especially film materials, is a major factor affecting the fastness of the ink, so the surface tension must be checked before printing.