What are other UV auxiliaries?
author: Uvink
2023-01-04
The main components of UV ink are polymerized prepolymers, photosensitive monomers,
photoinitiators, and auxiliary components are coloring pigments, fillers, additives
(leveling agents, polymerization inhibitors), etc.
Additives are mainly used to improve the performance of the ink. The commonly used
additives in UV ink include stabilizer, leveling agent, defoamer, dispersant, wax, etc.
(1) Stabilizer: Stabilizer is used to reduce thermal polymerization during storage and improve
ink storage stability. Hydroquinone, p-methoxyphenol, p-benzoquinone, 2,6-di-tert-butyl-cresol,
etc. are commonly used.
(2) Leveling agent: the leveling agent is used to improve the leveling property of the ink layer,
prevent shrinkage cavity, make the ink film surface smooth, and also increase the gloss of the ink printing.
(3) Defoamer: Defoamer is used to improve the leveling of the ink layer, prevent shrinkage
cavity, make the ink film surface smooth, and also increase the gloss of the ink printing.
What are other UV auxiliaries?
(4) Dispersant: the dispersant can make the pigment in the ink well and low wetted with
the binder, so that the pigment has a good dispersion in the ink, and shorten the grinding
time in the ink manufacturing; Reduce the oil absorption of pigment to produce high
concentration ink; Prevent the agglomeration and precipitation of pigment particles in
the ink. Dispersants are generally surfactants.
(5) Wax: Wax is mainly used to change the rheological property of ink, improve the water
resistance and printing performance (such as adjusting viscosity), reduce the problems such
as rubbing dirt and pulling paper hair, and form a smooth wax film on the dried ink film
surface to improve the wear resistance of printed products.
In UV ink, wax also acts as a barrier to air, reducing oxygen polymerization, and is conducive
to surface curing. But adding excessive wax and selecting the wrong type of wax in the ink
will reduce the gloss of the ink, destroy the transfer performance of the ink, and prolong
the drying time.
photoinitiators, and auxiliary components are coloring pigments, fillers, additives
(leveling agents, polymerization inhibitors), etc.
Additives are mainly used to improve the performance of the ink. The commonly used
additives in UV ink include stabilizer, leveling agent, defoamer, dispersant, wax, etc.
(1) Stabilizer: Stabilizer is used to reduce thermal polymerization during storage and improve
ink storage stability. Hydroquinone, p-methoxyphenol, p-benzoquinone, 2,6-di-tert-butyl-cresol,
etc. are commonly used.
(2) Leveling agent: the leveling agent is used to improve the leveling property of the ink layer,
prevent shrinkage cavity, make the ink film surface smooth, and also increase the gloss of the ink printing.
(3) Defoamer: Defoamer is used to improve the leveling of the ink layer, prevent shrinkage
cavity, make the ink film surface smooth, and also increase the gloss of the ink printing.
What are other UV auxiliaries?
(4) Dispersant: the dispersant can make the pigment in the ink well and low wetted with
the binder, so that the pigment has a good dispersion in the ink, and shorten the grinding
time in the ink manufacturing; Reduce the oil absorption of pigment to produce high
concentration ink; Prevent the agglomeration and precipitation of pigment particles in
the ink. Dispersants are generally surfactants.
(5) Wax: Wax is mainly used to change the rheological property of ink, improve the water
resistance and printing performance (such as adjusting viscosity), reduce the problems such
as rubbing dirt and pulling paper hair, and form a smooth wax film on the dried ink film
surface to improve the wear resistance of printed products.
In UV ink, wax also acts as a barrier to air, reducing oxygen polymerization, and is conducive
to surface curing. But adding excessive wax and selecting the wrong type of wax in the ink
will reduce the gloss of the ink, destroy the transfer performance of the ink, and prolong
the drying time.
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