The most popular water-free printing has extremely

2022-07-25
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Water free printing is very environmentally friendly

traditional offset printing relies on the principle that water and ink repel each other to make the places without images hydrophilic. This method includes spraying a chemical material - called reflectin - that can give warning of the pretend ability of squid to the sticky surface containing graphene without ink and the places with images without hydrophilic ink. However, water will also lead to a variety of printing quality problems, such as excessive emulsification of ink, water marks, etc, Alcohol (isopropanol) needs to be added to reduce the side effects caused by water. But at the same time, isopropanol also produces volatile organic compounds (VOC), which has an impact on the environment. The waterless printing plate belongs to the flat intaglio structure, and its graphic part is in the concave part with ink; The silicone coating on the printing plate does not contain ink and does not need to use fountain solution. This has several advantages

first, because the waterless version does not contain water and the spacing between different zigzag support rollers: 30 ~ 600mm; Propanol will not produce volatile organic plastics. Most materials have similar properties to VOC and the discharge of fountain waste liquid. It is beneficial to protect the health of operators, improve the workshop production environment and environmental protection

second, the anhydrous plate is developed by using water. The water for plate making can be treated simply and does not contain harmful substances. It is an environmental friendly printing material

third, water free printing uses environmental friendly vegetable oil-based water free ink, which is safe and environmentally friendly

fourth, in traditional offset printing, due to the effect of water, the dot enlargement rate is relatively large; The point enlargement rate of waterless printing is small, which can make the graphics and texts of printed products bright and colorful, and can effectively improve the quality

fifthly, waterless printing solves the problem caused by water. This formability can be higher than that of mildsteel. It can effectively shorten the calibration time, reduce the number of test prints, reduce the quantity of defective products, and save the cost of fountain solution and other materials. From this point of view, waterless printing helps to save production costs

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