What happens when uv ink is over cured?

author: Uvink

2022-12-20

What happens when uv ink is over cured?There is a theory that when the ink

surface is exposed to too much uv light, it will become harder and harder.

When people print an ink on the hardened ink film and dry it for the second time,

the adhesion between the upper ink and the lower ink will become poor.

What happens when uv ink is over cured?Another theory is that excessive curing

will cause photo oxidation of the ink surface. Photooxidation will destroy the

chemical bonds on the surface of the ink film. If the molecular bonds on the surface

of the ink film are degraded or damaged, the adhesion between it and another ink

layer will be reduced. The over cured ink film is not only less flexible, but also prone

to surface embrittlement. The over cured ink film is not only less flexible,

but also prone to surface embrittlement.

What happens when uv ink is over cured?The uv ink on the surface of the printed

matter can not be applied, and the printed matter will become blurred. Cause: uv varnish

viscosity is small, coating is too thin. Ink contains too much ink mixing oil or dry oil.

The ink surface has crystallized. There are many anti stick materials on the ink surface.

Gluing screen roller is too thin. Solution: Corresponding measures must be taken to

create conditions for the printing of products requiring uv glazing. The uv ink should

be applied thicker, and if necessary, the problem can be solved by

priming oil or replacing special ink.