The way to Make UV Offset Printing Have Strengths
The way to Make UV Offset Printing Have Strengths
The way to Make UV Offset Printing Have Strengths
UV Offset Screen printing has a standard advantage on the surface texture, protection, put on resistance and production efficiency, especially for plastic sheet, gold and silver cardboard along with other non-absorbent materials printing. This may allow UV offset printing to apply the technologies within the printing business. Even so, UV offset printing and packaging organizations are pondering about the way to take care of issues inside the process.
Want UV offset printing play a much better role, businesses must concentrate on the principle problems as follows.
1. Plate Creating Design Style of UV printing perform must be according to the output format, including the output screen frequency, screen angles and so on. Some special circumstances, like 3D printing, it must be of high resolution, screen angle should be matched with the printing material as a way to avoid the collision; transparent plastic sheet printed with white ink are typically necessary, consideration ought to be paid towards the effect of versatile printed materials.
2. Adhesion
Because the plastic sheet material or gold and silver cardboard have poor permeability, the ink absorption is weak, so even with UV ink printing, ink adhesion is really poor, the printing top quality is not very good.
three. Ink emulsion
UV inks for ink-water balance tolerance is extremely narrow. They quickly result in printing ink emulsion and dirty version which will affect the printing high quality.
Resolution: reduce the printing speed, the printing speed manage in 5000 ~ 8000 print / hours.
four. Solidifying Degree
In order to boost color saturation of printed materials, when UV printing On the surface of the substrate, printing pressure, thick layers of ink, dot acquire serious, which makes the ink just isn't straightforward to cure. As a way to ensure the good quality, factories can not do a lot printing pressure adjustment. Solution to this really is firstly reducing the printing speed appropriately, to ensure that the suitable UV light exposure time could be added to create the ink fully solidify.
5. Color sequence arrangement
UV offset printing color sequence arrangements are a lot more complex. Given that the limitation of inking principle, layers of ink on the substrate is thin, the printing copy is tough to obtain the desired effect when needing fairly thick layers of ink. For example, when the four-color overprint, generally employed inside the printing color sequence black, cyan, magenta, yellow, due to the fact black and almost fills all the space, and also the total amount of ink isn't adequate, it's going to cause Color unfilled.
Remedy: Adjust the color sequence, at very first printing color which requires smaller amount of ink, then big amount of black ink, so you'll be able to make the highest quantity of inking with complete color.
6. Printing register
UV offset utilizes UV light irradiation for solidifying, the main problem is brought on by thermal expansion of the substrate, leading to overprint. This really is in contradiction using the UV curing ink because the ink curing UV lamps require a longer exposure time, and printed sets of suggestions should UV light requirements shorter exposure time.
Remedy: Operate UV solidifying soon after the last a single coloring procedure, lower the temperature by putting a period of time. It could minimize the deformation of substrates.
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