UV color box refers to printing and polishing, that is, polishing the surface of a replica with graphic printing once or twice with a field printing plate or a graphic printing plate to obtain a bright VU film layer on the printed surface. Printing and glazing can enhance the light resistance of ink, increase the heat and moisture resistance of ink layer, and protect imprinted products instead of covering films.
UV glazing is a printing surface treatment technology. It is named because it uses UV varnish with high brightness, transparency and wear resistance to selectively polish printed pictures and texts.
Extended data:
New local ultraviolet technology
First, the mixed ink technology
Because uv printing or uv glazing is not suitable for strong absorption on the substrate surface and poor adhesion on the ink surface, online uv glazing is mostly needed. If all uv ink is used for printing, it will inevitably increase the cost: if ordinary ink is used for printing, film coating or overall glazing before glazing, this will undoubtedly hinder the application of offset online glazing.
The mixed ink technology has effectively solved this bottleneck problem. In performance, it combines the advantages of UV ink and traditional ink, that is, UV curing and oxidative polymerization drying, which improves the synergistic effect of ink surface and UV varnish, paving the way for online polishing of offset printing.
Second, reverse glass.
Reverse glass (pre-curing) is relative to traditional local glass. In order to achieve the effect of high contrast of local images and texts, traditional polishing methods (flexographic screen printing or gravure printing) need to be used for local polishing. Therefore, the overprint accuracy of polishing and printing becomes the key of polishing technology. Reverse polishing technology breaks through the above rules and solves the alignment problem.
Third, online ultraviolet glazing.
Online polishing is no longer a new technology of flexographic printing and gravure printing, but offset printing with wide application range, high printing accuracy and fast speed. It is a polishing technology with innovative ideas under the voice of differentiation and value-added services. There are four online uv polishing methods: ordinary ink+double polishing (water-based polishing +UV polishing); Mixed ink +UV polishing; Uv ink +uv polishing; Uv ink +op oil +uv polishing (reverse polishing).
Baidu encyclopedia-ultraviolet
Baidu Encyclopedia-Local Ultraviolet