The printing processes for patterns on power banks usually include silk screen printing, pad printing, transfer printing, and UV printing. Among them, silk screen printing and pad printing mainly print single-color, two-color, or simple patterns on the surface of power banks, such as logos, numbers, etc., which cannot meet the requirements of complex patterns. In addition to eight-color pattern printing, UV printing has a unique three-dimensional relief printing process, which can make the outline of the pattern touchable, and has the characteristics of non-fading, scratch-resistant, and wear-resistant.
Reasons for the expansion of UV printing in the field of power banks:
1. Driven by environmental protection, various places have eliminated backward printing processes (high energy consumption and heavy pollution), and printing companies need new digital color printing processes to replace them.
2. Labor costs continue to rise. UV printing uses computer-controlled, automated printing. One technician with a monthly salary of 4,000 can complete the entire process without hiring more people.
3. Driven by user needs, ordinary, simple color printing cannot meet the requirements of personalization, customization, and 3D relief stereoscopic effects, which also forces printing companies to upgrade and transform their products.
4. Improved production efficiency. Printing patterns on power banks can dry within 3 seconds without other processing steps, not to mention the need for plate making, color matching, film, baking, and drying like silk screen printing.
Power bank UV printing effect diagram:



Suitable materials for UV printing power banks:
1. Plastic.
2. Wood.
3. Metal.
Because power banks are in long-term contact with people, in order to avoid fading of patterns caused by sweat, friction, etc., a layer of varnish can be applied on the surface of the printed pattern, which can not only play a high-brightness role but also be friction-resistant and waterproof.
The profit from power banks is still good. An ordinary power bank of $15 has a market price of between $30 and $40 after the appearance is printed. In addition, the demand is relatively wide, so it is quite suitable to do UV printing for this, and the process is not complicated.