As a Uv Ink Supplier , share with you. There are two types of UV curable inks for metal printing: cationic or free radical (acrylate). Cationic UV curable inks all contain a chemical composition based on epoxy resin. The curing speed of this ink system is slower than that of the traditional free radical system, which is generally based on acrylic resin. If properly treated, both ink systems can bring good outdoor durability to printed matter. Both cationic and free radical UV curable inks are chemically reactive. During the curing process, a hard ink film can be produced. These ink films are not only resistant to abrasion and corrosion by chemical agents, but also similar to thermosetting solvent inks. Uv Curable Varnish No matter which type of ink you choose for metal printing, this ink should meet the specific performance requirements of the job. For example, the ink film formed by screen printing ink must not only have a certain degree of hardness to resist wear, scratches, in...