There are still several important factors to consider in completely replacing the use of alcohol in the printing process. It is indeed difficult to achieve completely alcohol-free printing. First, the printing operator needs to abandon the dependence of traditional printing on alcohol, and the change of concept and habit has a milestone significance; second, the alcohol-free printing has the hardness and pressure of the water roller; the structure of the ink system (with temperature control is the most Ideal); the amount of fountain solution added and the adjustment of the water level are different from traditional alcohol printing. Free (subtracted) expression of alcohol fountain solution Alcohol is a very common additive in traditional printing. As a single additive component, when alcohol and fountain solution are mixed together, it does play a big role. However, alcohol is defined as volatile organic compounds (VOC). In addition to being flammable and dangerous, it also pollutes the environment of the printing workshop and endangers human health. Many governments and environmental protection agencies have begun to restrict the use of alcohol and its substitutes in the printing process. It is only a matter of time before strict restrictions or legislation to eliminate their use. Possible problems with alcohol-free printing 1. The amount of dampening water is "too high" Since the alcohol-containing system has a higher viscosity than the non-alcoholic system, at the same time and the speed of the water roller, the amount of water transferred from the alcoholic system to the printing plate is more than that of the non-alcoholic system. To avoid dirty plates, it is necessary to increase the water The rotation speed of the roller gives the impression that the amount of water supply increases more. If the pressure of the water roller against the plate is reduced to make the speed setting of the water roller equivalent to that when printing with alcohol, the worker will not feel that the water volume is too high 2. Excessive emulsification, cross-coloring, and dirty layout 1) In the alcohol-free printing system, the ink roller system will accelerate the emulsification and reach the water-ink balance, which may lead to excessive emulsification of the ink, especially when printing large solid plots and large dot color areas. When this problem occurs, on the one hand, the connection between the water channel and the ink channel needs to be cut off in time, so that the fountain solution can be transferred to the printing plate before being emulsified. It is best to prevent the integrated ink roller from running on the water roller; In a system without alcohol, the ink will not be diluted. At the same inking amount setting, the color density will be higher than that of the alcohol-containing system; thus reducing the setting of inking amount and reducing the amount of fountain solution. It can be restored to the normal operating state with the least amount of ink. 2) Check the hardness of the ink roller. The softer rubber has a more excellent effect in alcohol-free printing. The efficiency of any ink roller system depends on the performance of the ink roller at the maximum tension setting, and certain adjustments are required when using a new fountain solution. It is worth noting that the alcohol-free system is completely different from the alcohol-based system. If you want to run the alcohol-free system smoothly, you need to re-learn new technologies. Effect of water quality on dampening effect Too soft or too hard water quality will cause a lot of ink problems and increase the difficulty of maintaining the balance of ink and water. In order to maintain a more effective dampening process, the best way is to use a reverse osmosis system to treat water, especially in the absence of alcohol or The case of reducing the proportion of alcohol. Because the fountain solution contains nearly 97% water, it is necessary to analyze the water quality. Too soft or too hard water quality will cause and increase the difficulty of maintaining water-ink balance. To maintain a more effective dampening process, the most effective way is to use a reverse osmosis system to treat the water quality to meet the use standard. Monitoring of the amount of fountain solution added When reducing or canceling alcohol printing, it is critical to monitor the amount of fountain solution added. Shenglin Fountain Concentrate has a strong buffer system. When the diluted solution is between 2% and 5%, the pH value does not change significantly, so Controlling the amount of fountain solution added by controlling pH is not completely accurate. The only way is to measure the conductivity, which will increase with the increase of the proportion of the concentrated solution in the solution, which can give a credible hint to the dampened concentrated solution with and without buffer system. Preparation necessary for alcohol-free printing 1. Thoroughly clean all the water roller and ink roller of the printing machine, and use special cleaning agent to clean the fountain solution circulation system; Practical experience has proved that whether it is printing with trace alcohol or non-alcohol, regular maintenance of the printing press is essential to the quality of printing. Shenglin dealers and our service staff will be happy to give you when you need it. Suggestions and technical support. 2 What are the wooden handicrafts - wine rack Wood Craft,Wooden Craft Boxes,Wooden Wine Gift Box,Wooden Bottle Crate,Custom Wood Craft,OEM Wood Craft Jinan Tri-Tiger Technology Development Co., Ltd , https://www.tigerwoodproduct.com
2. Mix Proportional Shenglin (SR-530) alcohol-free advanced fountain solution with about 4% of the added amount;
3. Fully circulate the fountain solution and keep the temperature in the water tank between 10 ° C and 12 ° C.
The shelf for placing various drinks can be made of wood. Such a wooden wine shelf is not only beautiful but also very practical. Generally, the drinks to be displayed are very expensive, and many people store them accordingly. The wood used to make the wine rack should consider what kind of wood is best to choose. In fact, the wood used in general is not ordinary, especially in large shopping malls and high-end clubs. The wood for wine racks is very expensive.
3 What are the wooden handicrafts - jewelry box
Most of the boxes used to place jewelry are made of wood, and some gold jewelry is suitable for wooden jewelry boxes. Jewelry is an accessory worn by women. When not wearing it, it is usually placed in a jewelry box. Which jewelry to choose is also taken out from the inside. It is also important to place jewelry. If the material of the jewelry box is not suitable, it will not have a good maintenance effect. The wooden jewelry box is multi-purpose.
4 What are the wooden handicrafts - root carving
Using the root carving method, the self-generated form and distortion behavior of tree roots are used as the artistic creation objects. Through conception and processing, artistic image works such as characters and animals are created. Root carving artworks can be collected, especially the more precious the wood selected, the more valuable the carved artworks. In fact, the root carvings are rarely artificially modified, and the artworks are more natural and beautiful.
5 What are the wooden handicrafts - screen
A screen is a kind of furniture used in traditional Chinese buildings to block the wind. Screens have a long history and are generally displayed in prominent positions in the interior, which can be used to divide, beautify and block. As an inseparable part of Chinese home decoration, it is a good way to present the beauty of nature and tranquility. The screens used in ancient times are made of wood, and there are exquisite pattern carvings on them, which are of great artistic value.