UV ink and traditional ink is very different, UV ink film is chemical action, monomer and polymer solvent polymerization reaction occurs on initiation, and traditional ink film is a physical effect, resin is polymer, solvent solid polymer was dissolved into a liquid polymer, printed and coated substrate and solvent by evaporation or absorption, make liquid polymer revert to the original solid shape. 

Composition and advantages 

The structure of the UV ink comprises a resin, a monomer, an alternative solvent, an additive, and a light initiator. UV ink resin and solvent volatile ink resin is very different, it is reactive, it can react with other chemical reaction process of a product, in the UV ink, it can react with the monomer. The polymer is a low molecular weight chemical, in some degree, it can replace the solvent, and can reduce the viscosity, which is suitable for printing. But it also has a very important role in addition to the role of a solvent or diluent. UV ink in each component can play a chemical reaction, because it is 100% curing, all components will be turned into a solid state through chemical reactions. 

Printing adaptability 

UV ink and solvent based inks in the printing and printing quality is greatly improved. Because UV ink is 100% solid, there is no volatile solvent, so the ink viscosity will not change with the change of environmental conditions. Before printing industry and trade to finish printing a cycle is very long, especially in fine pattern printing to viscosity changes of problems encountered, in print before and after scraping ink, solvent evaporation the viscosity change, every once in a while, the ink layer thickness will be different. And UV ink, the work of the day ink viscosity will not change, the quality of printing products is exactly the same. In the cleaning, UV ink in the printing will immediately put into the curing equipment for curing, so contact impurities are not many, can keep the product clean. And solvent based inks in the printing after a long time to dry, when the environment more than a long time, it will produce pollution. When making the luminous signs, often need to printing to be thick, require multiple printing in order to meet the requirement of the thickness, and then use the traditional ink printing in every time after printing to in the oven go time, need to spend a lot of time and energy. The use of UV curing inks for printing, you do not need to bake in the road for drying, immediately after each printing can be cured, the next step in the process, greatly saving time and energy. In general, UV ink will push into advertising and banner printing field. UV ink has been in the process of development and change, and there are more and more of the printing plant began to use new UV digital printing ink. When the UV curable ink was first marketed, they on a fragile, adhesive and curing aspects there are some problems. But with the emergence of new UV ink, all problems are smoothly done or easily solved. New products with higher viscosity and stronger flexibility, can meet the roll to roll the needs of printer, and they in color and ink formulation of diversity also than previous products have great progress. The new UV ink is also known as the "cationic UV ink", they used a cold UV light curing technology, can instantly dry, do not need to wait for 24 hours. In the coming days, the ink will make significant inroads into the by the guard of solvent based inks for digital printing market, especially body ads and banner printing field.