Cylinder screen printing technology is more and more widely used in the label and packaging printing markets that require high quality and good visual effects. The use of cylinder screen printing technology can achieve effects and other additional functions that cannot be achieved by other methods. Take the STORK roller screen printing machine as an example to introduce the roller screen printing technology and equipment.
1. Principles of cylinder screen printing and screen features
The cylinder screen printing system is composed of a plurality of independent monochrome printing units, suitable for printing of various widths, and can make the synchronous production line get integrated intelligent control.
In the Stoke cylinder screen printing system, the patented RotaMesh screen technology is adopted, which is a non-woven material made of 100% nickel by electroforming. The unique hexagonal structure can achieve excellent stability, allowing the screen to stretch arbitrarily in the printing of paper rolls of different widths.
RotaMesh wire mesh has the following characteristics:
â‘ 100% metallic nickel material;
â‘¡Non-fabric;
â‘¢ Electroforming manufacturing;
â‘£Hexagonal structure guarantees maximum stability;
⑤ The seam of the wire mesh is extremely smooth and perfect;
â‘¥ The smooth surface of the roller can reduce the plate wear;
⑦Cone mesh has ideal over-ink performance.
In addition, RotaMesh screen also has a high degree of standardization and stability; long service life, reusable, suitable for high-speed screen printing and high calibration accuracy advantages.
2. Stoke Plate Making System (RSI)
The Stoke cylinder screen system can provide a simple plate-making system. Especially when short version production or temporary printing is needed, this system has completely independent, complete plate making quality and great flexibility. Since this system is installed indoors, its overall cost can even be reduced to that of existing printing forms.
The process of making RotaMesh screen is as follows:
1. End ring connection. The left and right end rings of the welded cylindrical wire mesh are bonded to the mesh cylinder with an adhesive.
2. Skim. The silk screen is degreased before being coated with photosensitive resin.
3. Coating. Coat a layer of water-based photosensitive emulsion of STORK on the surface of the roller screen.
4. Dry. Dry the screen drum after degreasing and coated with photosensitive adhesive in the dryer.
5. Exposure. After the silk screen coated with the photosensitive emulsion is in close contact with the graphic film, it is exposed on the exposure device.
6. Development. Wash away the unexposed emulsion in the water.
7. Test. Check the quality of the screen before printing.
8. Peel the film.
Due to the unique photosensitive emulsion used in the RotaMesh process, the adhesive film on the screen is easily removed with a special release film and can be re-coated. This brings a lot of convenience to short live printing. [next]
3. Roller screen printing system
Cylinder screen printing is today's economic and high-tech screen printing technology. The key technologies in cylinder screen printing are screen cylinders and printing systems.
Cylinder screen printing system:
1) The combination of the Stoke cylinder screen printing system dryer and a printing unit with a width of 24 inches allows the production speed to reach 120 meters / minute. The structure of the cylinder screen printing machine is stable and durable, and the screen can be used repeatedly. It is suitable for printing a large number of products or frequently repeated products.
2) The cylinder screen printing system generally has a simple and convenient work piece conversion control system, and the downtime for replacement work is very short. The equipment can achieve higher output.
The Stoke cylinder screen printing system includes:
â‘ Independent drive, independent register screen unit (installed on various cylinder printing equipment).
â‘¡ Roll to roll equipment, each unit is an independent system.
â‘¢ Roll to various post-processing equipment (such as cutting large sheets, roller die cutting, etc.).
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Changshu Xinneng Silicone Products Co., Ltd. , https://www.xnsilicone.com