Patch sleeve is mainly used for mounting photosensitive resin plates. It's easier to load and unload than traditional metal plates, with convenient storage and low cost, and can be divided into hard and soft elastic surface sleeves. The existing metal printing plate rollers have issues like heavy weight, high energy consumption and low loading efficiency, and attempts to reduce weight with certain fillings bring other drawbacks. Seamless patch sleeve, also called sleeve plate, is even more convenient, directly carved on seamless sleeves. Its application is growing with the development of relevant technologies. Its specifications cover certain repeat circumference, printing width ranges and has high engraving accuracy.
Patch sleeve
patch sleeve is specially used to mount the photosensitive resin plate, this type of sleeve is easier than the traditional metal plate loading and unloading, convenient storage, low cost. According to the different surface materials, the patch sleeve can be divided into hard surface sleeve and soft elastic surface sleeve.
The existing printing plate roller is made of steel or aluminum metal materials, and the quality of the metal material plate is heavy, especially the plate roller with large outer diameter is large, the machine energy consumption is high, and the loading efficiency of the plate roller is low. In order to reduce weight, foamed polyurethane or foamed synthetic rubber is used as the filling layer, but this plate roller as a whole has drawbacks such as low structural strength, poor dimensional stability and processing pollution.
Seamless patch sleeve
Seamless patch sleeve, also known as sleeve plate, it is more convenient than the patch sleeve, is directly carved on the sleeve of the seamless plate, which is somewhat similar to the gravure cylinder. With the development of computer direct plate making technology and laser engraving technology, the application of jointless patch sleeve is becoming more and more common, at present, there are many flexographic printing manufacturers in the use of jointless patch sleeve, but once you pay attention to it, you will find that we are now using foreign jointless patch sleeve, the advantages of technology & long-distance transportation bring cost improvement.
Advantages
Patch sleeve
The patch sleeve is to put a sleeve on the same specification of the gas support core shaft, and change the wall thickness of the sleeve cylinder to form a "plate roll" with different printing circumference. The application of sticker sleeve technology has brought subversive changes to flexographic printing and can effectively improve work efficiency. With the advantages of light weight and high precision, the sleeve is widely used in the global flexo printing industry.
Seamless version
1. Plate material installation is simple, reduce machine adjustment time, reduce waste.
2. The registration accuracy is very high, no plate error, no double-sided tape thickness error
3. No tape and paste process, save time.
4. No Xiang phenomenon, uniform printing pressure, can improve the printing speed
5. Save printing material 3%~10% (depending on the order).
Application
Conclusion
Patch sleeve is an important component used for mounting photosensitive resin plates. It has significant advantages. Compared with traditional metal plates, it is easier to load and unload, convenient for storage and has a low cost. According to the differences in surface materials, it can be divided into hard surface sleeves and soft elastic surface sleeves to adapt to different printing situations and requirements.
However, traditional printing plate rollers made of steel or aluminum have many flaws. Due to their heavy weight, especially those with a large outer diameter, the energy consumption of the machines will increase significantly. This not only raises the energy cost but also leads to low loading efficiency of the printing equipment, affecting the overall production efficiency.
Although attempts have been made to use foamed polyurethane or foamed synthetic rubber as a filling layer to reduce the weight, this has caused new problems, such as insufficient structural strength, poor dimensional stability and pollution during the processing, which limit its further application and development. The seamless patch sleeve (also known as sleeve plate) shows greater advantages and potential. It is more convenient than the ordinary patch sleeve and is directly carved on the sleeve of the seamless plate, having a certain similarity with the gravure cylinder. With the progress of computer direct plate-making technology and laser engraving technology, the application of seamless patch sleeves has become more and more widespread.
Many flexographic printing manufacturers have adopted them one after another. However, at present, most seamless patch sleeves used in China are imported from foreign countries. Although their technological advantages are obvious, the cost of long-distance transportation has increased the overall cost. In terms of specifications, the repeat circumference of the seamless version ranges from 254 to 2400 mm, the maximum printing width is below 5000 mm, and the engraving accuracy is as high as 10,160 dpi. These parameters provide a powerful guarantee for high-quality printing operations and can meet the needs of diverse printing tasks. They are of great value in fields such as packaging printing and label printing and are expected to play a greater role in the printing industry with the continuous improvement of technology and the advancement of the localization process, promoting the continuous development and progress of printing technology.
