Rubber concave combined multifunctional rotary machine

Various printing processes, such as offset printing, gravure printing, flexo printing, embossing, and screen printing, coexist in the long-term, complement each other, and develop together. Each printing process has its own unique advantages. This is the reason for its existence. However, all kinds of printing processes also have their inadequacies. For a printing process, the existence of other printing processes is the embodiment of the process itself. With the increasing demand for high-end packaging prints in the current market, a single printing process has been difficult to meet the needs of the market. Combining the lengths of various printing processes, printing the same prints with different printing processes has become a trend for high-end prints.

It is not easy to combine different printing processes on the same print. In the past, people used off-line processing to print a variety of printing processes on prints. However, there are obvious deficiencies in this practice. Too many processes, printing quality is difficult to guarantee, and waste is also great. At the same time, the processing cycle is long, and the storage of semi-finished products also increases the difficulty of inventory management. Online production avoids these problems.

It should be noted that the combination of online processes is not arbitrary. The combination of different processes often sacrifices the advantages of one of the processes. For example, the combination of offset printing and screen printing is bound to sacrifice the speed advantage of offset printing. Therefore, the choice of on-line process is based on the principle of strong combination.

The combination of offset printing and gravure printing is a perfect combination. The gravure printing has a good printing effect in the field, and the offset printing has the most abundant performance on the subtle level. The most important thing is that the combination of the two does not limit the advantages of any party, and printing speed is hardly affected.

Drandt-Gebbel has more experience in this area. As early as 30 years ago, Drandt-Gebbel AG produced a multi-functional rotary press that combines offset printing and gravure printing on a production line for the printing of banknotes and stamps. With the development of technology, the application of special non-shaft servo motor technology has enriched and improved the technical level of this multi-function printing press. For example, last year the company provided a printing machine to the Central Bank of Algeria, which focused on offset printing, gravure printing, gravure printing, and embossing. The integration of these technologies is entirely due to the fact that the machine has used nearly 50 servo motors to control the various parts of the machine. At present, Drenthe-Gebbel company also fully applies the above technology on its packaging and decorating web presses.

The technical advantages of Drant-Gebel Corporation are:

The full application of servo motor technology without shaft drive. After all, offset printing and gravure printing are different technologies. The combination of the two is important in terms of tension, registration, and other aspects. To ensure the final printing quality of the machine, the use of servo motor technology shows its great advantages. Because the servo motor can control the printing tension of different units extremely accurately, the printing machine can comfortably deal with different printing conditions, different printing materials, and guarantee the final printing quality.

Application of sleeve technology. Due to the diameter of the engraving cylinder used in the gravure printing machine, it can be changed according to the change of the size of the different prints. If the offset printing unit on the same line cannot change the cylinder size like a gravure press, then this device will inevitably have limitations in responding to changes in the size of prints. Sleeve technology is the patented technology of D'lant-Gebbel. Due to the application of this technology, the situation that the offset printing machine cannot change the diameter of the cylinder in the past has changed. The diameter of the roller can be varied steplessly according to the requirements of different print sizes, which greatly increases the flexibility of the offset printing rotary machine. At the same time, the use of sleeve technology, so that the machine's drive to cancel the gear, so that the scope of printing materials is more broad. Printing materials can be from 40 g/m2 to 500 g/m2.

With the application of new technologies, it is also possible to combine the post-press processing and printing processes on the same production line, reducing the waste consumption, the space and time for semi-finished product storage, and improving the production efficiency.

Source: pack.cn