UV ink, it is to point to the instant UV light curing ink.The main components of the UV ink including pigments, oligomers, monomers (reactive diluent), light initiator and various additives, etc.Among them, the resin and reactive diluent plays a fixation pigments and provide the role of film-forming performance;Paint gives the color of the ink, moderate and covering power of substrates;Light initiator demands under the interference of pigment can still absorb photons initiate polymerization.
From the printing process, UV ink fixation speed, conjunctival performance is good, for all kinds of substrates with good adhesion, and scratch resistance, wear resistance, good acid, alkali and other performance than ordinary ink, therefore, despite its more expensive than ordinary ink, but is still widely used.
Currently using UV ink printing field has the following categories:
1. The absorbent material printing
Such as polyethylene (PE) film, film of polyvinyl chloride (PVC), polypropylene (PP) film, metal foil and the special absorbent materials.If these substrates using common solvent ink printing, requires certain drying time, usually need to use powder spraying, drying rack device or mixed with other additives in the ink, and UV ink is no such problems.
2. Metal materials printed
In the metal material surface using UV ink printing, can shorten the curing process and simplify the original curing device.At the same time, the UV ink surface good curing and conjunctiva can not only improve the post-press processing features, but also improve the quality of the appearance of the product.
3. Commercial paper printing
Commercial paper printing using a special substrate and ink, such as no carbon carbon paper, thermal paper, magnetic ink, anti-counterfeit printing ink, etc, and demanded that the ink has some discoloration resistance, heat resistance and stability, so it is best to use UV ink or UV light oil.At the same time, because of fast paper printing equipment, printing ink consumption, also has the advantage of using UV ink printing.