Two key issues of the most popular alcohol free pr

2022-09-19
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Two key issues of alcohol free printing

why does alcohol free fountain solution focus so much attention? Because IPA (isopropanol) costs more money, damages rubber rollers, is neither environmental friendly nor safe, and so on, these defects have become increasingly unable to meet the needs of printing green, environmental protection and cost control. Alcohol free printing is adopted, which is more green and safe because there is no alcohol. And alcohol free fountain solution itself consumes less. With a very thin ink film, you can get clearer ink dots and more double space. The hydraulic universal experimental machine is the model with the longest production time, the most applications and the most extensive application limitations in China. It has bright color reduction, and the paper dries faster without damaging the rubber rollers. The role of cots in printing is very important. There is a doggerel that vividly interprets the function of the rubber roller. The roller is good, and it's good to work. The printing is good, and the business is great. Therefore, without damaging the cots, it can not only prolong the service life of the cots, but also have an intuitive impact on the quality of prints. But it is not easy to use alcohol free printing. Reviewing some failed cases, we believe that the two keys to alcohol free printing are to solve the problems of surface tension and the viscosity of fountain solution. Here are some of our experiences and experiences on these two points

1. Surface tension: alcohol is added to conventional fountain solution to reduce surface tension. After there is no alcohol, the surface tension should be carefully adjusted to be between 30 and 35, which is the same as the performance characteristics when printing with isopropyl alcohol

2. Viscosity makes the inherent reliability of electronic products further improved during the description and development: during alcohol free operation, the viscosity of fountain solution decreases and becomes thinner. If the printing machine is not adjusted, the fountain system cannot fully provide the fountain solution to a "small target" printing plate, and the delicate balance of ink and water is broken. However, if we can carefully and patiently adjust the pressure between the rubber rollers, we can help the fountain system to let more fountain solution pass through. With the removal of alcohol, the rubber of the fountain rubber roller will gradually soften until it returns to the original design hardness, and the water level measurement will slowly reduce to the best state

we vividly call alcohol free printing a top-down reform. That is to say, a prerequisite for adopting alcohol-free printing is the determination of the enterprise from top to bottom. This is almost a top-level project, and the first thing to be solved is the whole ideological and cognitive problem. After understanding and solving, everything else is easy to do. When it comes to machines, the implementation steps (together with experts), staff training, etc. are not a problem. Under the guidance of experts, adhere to careful adjustment; Patient adjustment; The correct method of these three principles, alcohol-free printing must be able to debug successfully

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