What is the difference between uv printing ink?

author: Uvink

2023-01-02

The ink has different properties according to the different binders used. There are

mainly resin based ink, solvent based ink, water-based ink and uv curing ink.

What is the difference between uv printing ink?The use of organic solvents as ink

binders will have a negative impact on the environment. In order to make the ink meet

the environmental requirements, environmental friendly materials should be used as

the ink binder. Environmental ink mainly includes water-based ink, uv ink, water-based

uv ink and some alcohol soluble ink. 1. Water based ink. The biggest difference between

water-based ink and solvent based ink is that the solvent it uses is water rather than

organic solvent, which significantly reduces VOC emissions, prevents air pollution, does

not affect human health, is not easy to burn, has stable ink property, bright colors, does not

corrode the plate, is simple to operate, cheap, has good adhesion after printing, strong

water resistance, and fast drying, so it is particularly suitable for packaging and printing

products such as food, beverage, medicine, etc, It is recognized as the world's

environment-friendly printing material and the only ink approved by the American Food

and Drug Association among all printing inks.

2. UV curable ink. uv curable ink is a kind of ink that uses uv light of different wavelengths

and energies to make the ink film and dry under UV irradiation. Using different uv spectra,

different energies can be generated to polymerize monomers in different ink binders into

polymers, so the color film of UV ink has good mechanical and chemical properties.

The main advantages of uv ink are: (1) no solvent; (2) Fast drying speed and low energy

consumption; (3) Good luster and bright color; (4) Water resistance, solvent resistance,

good wear resistance. Photoinitiator in uv ink is a kind of compound that is easily excited

by light. After absorbing light, it is excited into free radicals, and energy is transferred to

photosensitive molecules or photocrosslinking agents, so that uv ink can undergo photocuring

reaction. UV ink has become a more mature ink technology, and its pollutant emission is

almost zero. In addition to being solvent free, uv ink has the advantages of not easy to paste,

clear dot, bright and bright ink, excellent chemical resistance, low consumption, etc.

3. Water based uv ink. Waterborne uv ink is a new research direction in the field of uv ink.

The viscosity of prepolymer in ordinary uv ink is generally very high, and it needs to be

diluted with active diluent. The thinner acrylic compounds used have different degrees of

skin irritation and toxicity. Therefore, while developing low viscosity prepolymers and low

toxicity active diluents, another development direction is to study water-based uv ink,

that is, water and ethanol are used as diluents. Waterborne uv ink has been successfully

developed and applied in some printing.