Where are the structural characteristics of the flexographic printing machine reflected? In the stage of rapid economic development in China, the contradiction between economic growth, environmental pollution and cost inflation has become increasingly acute, but this contradiction is not contradictory. In the polluting printing industry, green printing is very popular. With the continuous improvement of many printing equipment, how can flexo presses have an advantage in saving costs and reducing pollution?
The plate cylinder of a flexographic printing press is usually in direct contact with the printing material. Therefore, the plate roller needs to scrape off the ink on the roller surface with a scraper before the ink outlet groove is in contact with the printing material, and then transfer the ink in the concave holes to the substrate through the pressing of the pressing roller and the capillary action of the printing material. Most high-speed flexo presses are cylinder presses for continuous printing.
During the preparation process, the rolls are heated in hot water and then placed in a chloric acid solution to strip the chromium and rust layers. It is then rinsed, the iron rolls are nickel plated, copper is stabilized, and the aluminum rolls are galvanized, arriving the same day.
Many equipment improvements can reduce pollution. Using vegetable oil instead of gasoline as a solvent, using water-based ink technology will reduce environmental pollution, and using less polluting solvent materials to replace existing solvents is also a better approach.
What are the structural characteristics of the flexographic printing machine? As an important printing machine, flexographic printing machine has a good application in many industries. What are the structural characteristics of the flexo printing machine?
1. The sleeve printing plate cylinder and anilox roller structure are adopted, which makes the upper and lower printing plates simple, flexible, convenient for storage, high system precision, and has the function of "quick plate change".
2. The unloading receiving unit adopts the double-arm double-position rotating frame of the separation tower, which has the function of high-speed non-stop roller change.
3. The drying box adopts the direct air inlet type, with small air loss and high efficiency. The oven with new structure can realize the secondary utilization of heat energy and is controlled by an intelligent constant temperature system.
4. The closed double scraper chamber ink feeding system is adopted to reduce environmental pollution, facilitate quick cleaning, and reduce ink change time and downtime. The doctor blade unit is pneumatically pressurized and the ink chamber is closed. Features swivel and quick release for cleaning and changing blades and ink sticks.
5. The wall panel adopts the overall structure and is not easy to deform.
6. The central embossing cylinder adopts a double-wall structure and a constant temperature water circulation system to keep the temperature of the outer surface of the embossing cylinder constant and prevent the thermal expansion of the embossing cylinder; it adopts a mechanical braking device, and the operation is reliable.
In the actual printing process, the factors that affect the printing effect of high-speed flexo press are as follows:
1. When proofing, of course, use a laser typesetting machine for proofing, and the single precision is between 0.01-0.1mm. However, some errors can also occur due to the different films used.
2. Due to the problems of papermaking technology, the brightness, thickness and texture of the same paper produced by different paper mills will be different.
3. After the printing is completed, the next step is to cut the printed matter with a paper cutter. When cutting the finished product, due to the error of the tool itself, the error after cutting the finished product also exists objectively.
4. The high-speed flexo printing machine fails. One is overprint accuracy and the other is ink color.
