How to judge whether the uv ink is completely cured?

author: Uvink

2022-11-29

UV ink has become an irreplaceable existence in the printing industry, but there are also

some problems in the production process of uv ink, such as incomplete curing of uv ink,

sticky surface,How to judge whether the uv ink is completely cured?

How to judge whether the uv ink is completely cured?Observation method. The simplest

way is to use the naked eye to observe the brightness of the uv coating film, whether the

edges are flat, whether there are bumps, etc. Line pressing method. Put a thin thread or hair

on the uv ink and press it gently with your hand for 5 minutes. If the thin thread will not

stick to the uv ink and there is no indentation of the thin thread on the uv ink, then you can

judge that the uv ink has been completely cured, otherwise, it has not been completely cured.

The disadvantage of this method is that if the uv ink is not completely cured, it will leave an

impression on the printed matter, which affects the quality of the printed matter.

How to judge whether the uv ink is completely cured?Solvent method. Use propionic acid

solution to drop on the uv ink. If the uv ink has been completely cured, its physical and chemical

properties will be very stable and will not react with the solution. Otherwise, it will dissolve.

This method also has potential disadvantages that affect the quality of printed matter. Hardness

test method. This is our method for testing the hardness of pencils. If the hardness reaches the target,

it means that the pencil is cured completely. If the hardness does not reach the target, it means that

the pencil is not cured completely. This is the most common and scientific method to judge

whether uv ink is completely cured.