Flexographic UV inks are mainly composed of prepolymers, reactive diluents, photoinitiators and sensitizers, pigments, and additives. According to the requirements of different printing materials, these components are reasonably coordinated to make the flexo UV ink achieve the best performance.

At present, UV ink is widely respected by printing manufacturers. And UV ink is an economical and environmentally friendly ink, which is the direction of ink development in the future. The types and characteristics of UV inks are introduced below.

Water-based ink is referred to as water-based ink for short. The main difference between water-based ink and oil-based ink is the difference in solvent. Water-based ink uses water (45%-50%) as a solvent, and the VOC content is extremely low, which has little environmental pollution: oil-based ink uses organic solvents (toluene, di toluene, denatured alcohol, etc.) as the solvent. In the flexible packaging industry, since solvent-based inks are mainly volatile and dry, the lower the boiling point of the solvent, the easier it is to volatilize and release bad gas to pollute the environment. After the printing is completed, there are also bad residues on the surface. Substances, while the solvents used in water-based inks are water and ethanol excluded from the voc list, which can excellently reduce voc emissions.

UV varnish is a kind of transparent coating, also known as UV varnish. Its function is that after spraying or rolling coating on the surface of the substrate, it is irradiated by UV lamps to make it change from liquid to solid, and then achieve surface hardening. It is scratch-resistant and scratch-resistant, and the surface looks bright, beautiful and round .

Since the printing range of uv flatbed printers is very wide, it has developed rapidly in recent years. There have been ink manufacturers of various sizes on the market, and various inks have been introduced. Among them, due to the environmental protection, slow attenuation, and bright colors of UV inks, UV The ink is so dazzling that many customers cannot distinguish between good and bad and types.

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