UV is derived from the English abbreviation for ultraviolet light, Ultra-Villet Ray.

The basic principle of UV radiation curing is to use ultraviolet light (UV) or electron beam as energy, trigger a chemically active liquid formula, and achieve a fast reaction curing process on the substrate surface, and the chemically active is the photoinitiator in the UV coating.

Photoinitiator: is the most critical component of UV ink coating, its role is to transfer the energy of ultraviolet photons, quickly trigger the cross-linking polymerization of monomers and oligomers, and promote the liquid-solid conversion process of the system. When the photoinitiator receives the ultraviolet light energy emitted by the UV lamp, it must be properly matched, and the UV energy can be neither high nor low. The high energy supply will affect the service life of the lamp. Problems such as coating discoloration also waste energy.

The concept of UV lamp: It is a kind of gas discharge lamp, the working principle of high-pressure UV mercury lamp is to add high purity mercury in the vacuum quartz lamp, through the discharge of the electrodes at both ends to form a voltage difference, in the use of UV lamp, pay attention to clean the surface of the lamp, because once the dirt dust is attached to the lamp, after high temperature polymerization will form a permanent residue, seriously affecting the light.