Application of Sleeve Technology in Rotary Offset Printing

Rotary offset presses, with their extremely high production rates, gain many people's eyes every day, but because of their own weaknesses, they are limited to publishing and printing. For packaging printing, due to the unfixed size of the packaging box, it is difficult for the offset offset press to exert its high production rate in the packaging printing field.

To solve this problem, many press manufacturers have used plug-in technology. The said plug-in technology is to make the plate cylinder, the blanket cylinder and the impression cylinder on the printing press an independent device, which can be disassembled according to the requirements. In this way, depending on the size of the prints, it is possible to create a number of inserts with different roller sizes. However, this technology is still unsatisfactory. First of all, the cost of making plug-ins is relatively high. If the size of the print is very large, the cost of the plug-in will be higher. Second, plug-ins are relatively heavy, and they are time-consuming and time-consuming to change. Although they are often improved, they are often cumbersome. In addition, since the drum roll needs to be belted by the gear, it is not possible to preset the drum diameter size.

The appearance of the sleeve technology has enabled greater flexibility in the printing of prints of different sizes. However, at the time of changing the sleeve, it is also necessary to change the gears of the easy-to-transport gears. The change in size cannot be changed steplessly.

The emergence and application of shaftless drive technology has greatly changed the situation. Rotary offset press uses shaftless drive technology as appropriate. After this, all axes are driven by servo motor. In other words, the plate cylinder, blanket cylinder, and impression cylinder of the printing press are driven by independent servo motors. Due to the elimination of the transmission shaft and the transmission gear, the non-shaft-driven offset printing can successfully realize the stepless change of the printing plate size and print the printing materials with different thicknesses.

It can be said that the perfect combination of Sleeveless technology and non-shaft drive technology has changed the situation in which rotary offset printing machines are limited in the length of re-copying brushes, setting off a new revolution in the offset printing market. The Drenthe-Gerber company is the first company to apply non-shaft servo motor technology to rotary offset presses. Its proposed VSOP (variable sleeve size offset printing) concept allows plates and blankets to be installed Depending on the length of the printed part, the sleeve has the unique features of light weight, simple and convenient operation, rapid change, high flexibility, and wide range of substrates.

Until now, competition in various printing technologies has been intense in the packaging and labeling market. In short-run printing, offset offset printing has advantages over gravure printing and flexo printing. First of all, offset printing plates can be readily available, and they have particularly good expressions in terms of screening, gradual change, minimum dot size, and small lines. Secondly, for different types of substrates, such as cardboard, labels, and films, if the use of gravure is still suitable for flexographic printing, the requirements for plate making are not the same. However, if offset printing is considered appropriate, the replication curve and print quality are the same for different printed materials. In addition, when printing on different substrates, offset printing also has a great advantage in terms of the exact same color. Because of this, under the condition of fewer and fewer prints and lower prices, there will be more markets and opportunities for rotational offset printing, and new ones such as direct plate-making and seamless seaming. The successful manufacture of the materials, the offset offset printing will usher in more extensive and broad development space.