Dialectical Method for Solving Common Problems in UV Printing
Release time:2021-11-09
UV ink is widely used in label printing due to its bright printing colors, high glossiness, water resistance, solvent resistance, wear resistance, and fast curing speed. It is widely used in embossed, flexographic, and offset printing. Choosing and using UV ink well, especially comprehensively grasping the influencing factors, judgment methods, and solution ideas of UV ink curing, is very important for reducing printing failures and improving label printing quality.
The current application status of UV ink
Low end UV ink products flood the market
At present, there are relatively few high-end UV inks in the domestic label printing market, so people often encounter faults such as dry rollers, ink stacking, ink flying, and dirty plates during the printing process; UV printed label products also commonly have problems such as poor ink adhesion, low glossiness, and insufficient coverage, especially the problem of low white ink coverage is more prominent. These are often caused by the use of low-end UV ink, which not only affects printing efficiency, but also significantly fails to meet the quality requirements of label products.
In order to avoid potential issues with UV ink as much as possible and meet the quality requirements of different materials, application fields, printing processes, etc., UV ink suppliers have been continuously improving and launching new products.
There is no unified standard for UV light sources to follow
The curing effect of UV ink is also directly affected by the UV light source. Due to the lack of a unified standard for the spectral range of UV light sources, the spectral range and power of commercially available UV light sources vary greatly. If the matching between UV light source and ink is not good, it will cause incomplete curing or excessive surface curing of UV ink, ultimately leading to quality problems such as poor ink adhesion.
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