Talk about uv ink use matters needing attention

1. Can not be mixed with oily inks, the mixture will gel.

2. Uv ink storage temperature 0-25 degrees Celsius and avoid sunlight.

3. The varnish 3021 cannot be added more than 5% during printing.

4. Additives must add uv special materials, the amount can not exceed 3% when adding anti-wear additives, too much affect the ink transfer ink, can not add in bronzing and uv light oil, the other can not be used for a long time (a day) to clean machine.

5. When using uv ink, use hand cream. When you have uv ink on your hands, please clean it as soon as possible. You can't use solvent to clean uv ink, so that uv ink will not be absorbed by the skin.

6. Ink balance control.

Compared with general oil inks, uv inks have a relatively narrow balance of ink and ink, and are easily emulsified and dirty in printing. Generally, inks with high viscosity are relatively easy to control because of their relatively low ink and water balance. The general area is small to use sticky high ink and not easy to paste version. The amount of water is as small as possible. The new printed substrate must be tested for adhesion.

7. How to confirm the hardening of uv ink.

Whether the surface feels sticky (surface hardening confirmation). Rubbing paper or nail on the printed surface? Confirm the result of the friction (confirmation of internal hardening). Do tape-peel test? Check if there is peeling inside the ink (confirmation of internal hardening)

8. Solution to cure problems.

Check uv lamp Check uv lamp cover Check ink thickness Reduce print speed Add photosensitizer Replace ink

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