About Of UV Curing System

What is a UV curing system?

Traditionally, printing inks,coatings or adhesives were dried with heat, and in some cases this is still done today.UV curing is a photochemical process in which high-intensity ultraviolet light is used to instantly cure or “dry” inks, coatings or adhesives. The UV curing system is built around an ultraviolet irradiation unit for curing resins that set under UV light.

What is Ultraviolet Light?

Ultraviolet light exists just below visible light in the electromagnetic spectrum. UV light ranges in wavelength from 100 to 400 nanometers and cannot be detected by the human eye. The UV spectrum can also be broken down further into three groups: UVA (315-400 nm), UVB (280-315 nm) and UVC (100-280 nm). UVB and UVC are higher energy and are generated from high intensity sources such as medium pressure mercury vapor lamps. Most photoinitiators absorb in the UVA and UVB region. For low intensity curing applications, fluorescent “black lights” are a convenient source of UVA.

Electromagnetic Spectrum

Principle of the UV curing system

Ultraviolet rays emitted from the lamp induce a photochemical polymerization reaction in inks, paints,adhesives, and other products that contain photosensitive materials such as prepolymers, monomers, photopolymerization initiators, and pigments that cures these products instantaneously.

UV curing process :

• UV curing process uses inks and varnish with photoinitiators

• Photoinitiators are reactive to a specific bandwidth and intensity of UV light


ico1  • Photoinitiators split by UV light into two free radicals

ico2• Free radicales try to couple with the binders

ico3• Cross links are formed

Benefits Of UV Curing System

★ Instantaneous curing

Time saving

Can cure a workpiece within 0.1 to several seconds.

Space Saving

Offers a compact system design.

Cost Saving

The optimum-scale system can be designed to suit the required throughput.

★ Low-temperature curing

Accommodates heat-susceptible materials

Can treat any type of material.

Energy saving

Only the required area is irradiated with ultraviolet rays on an as-necessary basis.

★ No environmental impact and extra safety

Improvement of the working environment

The system fundamentally requires no solvents and is driven by electric power, eliminating air pollution and odors.

Simplified equipment

Solvent treatment and antipollution equipment are no longer required.

★ Higher quality

Improved strength

The cured material acquires a higher mechanical strength.

No damage/odors

Can cure the material uniformly and eliminate odorsof ink and paint.

Can produce a metal-like burnish and a high-quality feeling.

Offers significantly increased resistance to solvents, chemicals, and contamination