In recent years, with the continuous improvement of ink technology, equipment digitization and printing plate formulation, waterless offset printing has been rapidly developed, and even has been fundamentally changed. But in China, especially packaging Printing companies have little knowledge of waterless offset printing, and it has been rare to carry out waterless offset printing. The following is a brief introduction from the latest developments in the use of waterless offset printing technology, waterless offset printing technology, and the application of waterless offset printing in the foreign label printing industry . Let's take a look!
Advantages of waterless offset printing
The so-called "waterless" offset printing is relative to conventional "wet" offset printing. Traditional offset printing uses the principle that oil (ink) and water (dampening solution) are incompatible by oil and water to replicate the image on the printing press. However, it is difficult and complicated to handle the relative balance of the two liquids on a printing press, and it is difficult to ensure the quality stability of the continuously printed product. Moreover, during the printing process, the fountain solution repels the ink in a relative manner, and as a result, the partially contaminated liquid remains in the device, causing pollution to the environment. The waterless offset printing relies on the silicone oil coating to repel the ink, does not require fountain solution, does not use water, alcohol or alcohol liquid, is a green printing technology, and has high printing quality.
The advantages of waterless offset printing are mainly reflected in the following aspects.
01 is conducive to environmental protection
â—Waterless offset printing does not use solvents such as alcohol. There is no water bucket device on the equipment, so there is no need for wastewater treatment and no pollution to the water source.
â— The application of solvents and chemicals is reduced or eliminated during the plate-making process of waterless offset printing plates, and VOCs emissions are small;
â— Compared to water offset printing, the noise of waterless offset printing presses is relatively low.
02 printing quality is good
â—The waterless offset printing has high resolution and is suitable for random frequency modulation network printing of small dots;
â—Because there is no effect of dampening solution, the dot enlargement is reduced, the color density is increased, and the overprinting is easier;
â— Waterless offset printing also increases the color gamut space, making the color richer and more eye-catching;
â— Consistent ink density can be unaffected by the printing speed, and the color density of the printed product is basically unchanged.
03 improves production efficiency
â— Waterless offset printing does not require dampening solution and dampening water bucket, water roller system, reducing printing costs;
â—It is not necessary to adjust the ink balance, it can also save preparation time and improve production efficiency;
â— Overprinting and chromatic aberration are easy to control, reducing waste in the production process;
â—The quality is continuous and stable, and the design requirements can be met in a short time after starting up, reducing paper consumption;
â— The device structure is simple and easy to operate, the operator does not need training, and the operation is quick and convenient.
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