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Central Drum Flexographic Printing Machine With Infrared Drying for PET Wax Coated Fresh-Keeping Oil-Resistant Paper
MJCI series central impression flexo press offers exceptional versatility, catering to a broad spectrum of printing substrates and ink types. It excels in producing high-quality prints on diverse food packaging paper, such as PE coated paper, wax coated paper, PP coated paper, PET coated paper, and more. This advanced machine ensures top-tier performance and meets all your food packaging paper printing needs with ease.
- Description
- Feature
- Parameters
- Application
- Details Display
- Q&A
Description
MJCI series central drum flexographic printing machines are engineered with precision to deliver exceptional print quality on a variety of food packaging paper materials. These machines are particularly adept at handling applications such as aluminum foil coated paper, sulphate coated paper, PU coated paper, water-based coated paper, clay coated paper, moisture-resistant coated paper and so on.
Feature
- Oxidized Aluminum Roller: long-term contact with ink will not turn black.
- Mechanical Gears With High-Precision Grinding: improve closing accuracy and extend service life.
- Bearings Use NSK Imported Bearings and HRB Domestic Bearings.
- 142mm Diameter Printing Roller: larger than that made by other manufacturers, more uniform printing pressure, higher overprint accuracy, faster printing speed and better stability.
- Chrome-Plated Plate Roller: improves wear resistance, corrosion resistance, surface finish and dimensional accuracy.
- Independent Heating and Drying System: ensures efficient ink drying, prevents smudging, reduces production time, and improves ink adhesion on various substrates for high-quality, vibrant printed output.
- Multifunctional Printing Unit: equipped with a ceramic anilox roller ink transfer and automatic ink supply system. The anilox roller and plate roller can be pneumatically clutched and automatically separated when the machine is stopped to prevent the ink from drying up. In addition, the printing unit also supports 360° circumferential plate adjustment to further improve the overprint accuracy.
- High-Quality Ceramic Anilox Roller: the surface adopts imported ceramic powder, and the anilox roller is produced by Shanxi Yuncheng Platemaking Group; if water-based ink is used for printing, the service life is 5-8 years; if ink is used for printing, the service life of the ceramic anilox roller is 3-5 years.
- CNC Machine Frame and Nickel-Plated Printing Unit Position: prevent rust and extend machine life.
- Easy to Change Printing Plate: reduces downtime, boosts operational efficiency, and simplifies the process for operators to switch between different print jobs.
- 35mm Doctor Blade Cavity Depth: is thicker than the doctor blade produced by other manufacturers, less prone to ink leakage, and ensures high-speed operation stability. It also prolongs the lifespan of anilox rollers, resulting in superior print quality for products like paper cups.
- High-Quality Central Impression Cylinder: provides durability and stability, while the optional constant temperature control system prevents thermal expansion and enhances the accuracy of paper cup printing.
- Manual or Automatic Color Register System: ensures accurate color alignment to achieve high-quality prints and enhanced operational efficiency.
- Closed Loop Tension Control System: monitors and adjusts web tension to ensure stable material handling, minimize printing defects, and maintain high-quality, precise print registration on paper cups.
Parameters
| Model | MJCI Series |
| Printing Color | 2-10 colors |
| Material Width | 800/1000/1200/1600mm |
| Printing Width | 770/970/1170/1570mm |
| Printing Length Range | 345-860mm |
| Mechanical Speed | 50-280m/min |
| Printing Speed | 50-260m/min (depending on the substrate) |
| Precision | ±0.12mm |
| Material Diameter | 600/1200 mm |
Application
MJCI series central impression flexo press excels at printing on a variety of coated food packaging papers. On PE coated paper, it delivers clear and durable prints. On wax coated paper, it ensures ink adhesion while maintaining the paper's moisture resistance. On PP coated paper, it delivers vibrant colors. On PET coated paper, it enables high-resolution printing. Foil coated paper benefits from its precise printing, ensuring no ink smears. PU coated paper remains flexible after printing. On biodegradable coated paper, it delivers environmentally friendly, high-quality prints that meet sustainable packaging needs.
PE Coated Paper
Wax Coated Paper
Water-Based Coated Paper
Biodegradable Coated Paper
PET Coated Paper
PP Coated Paperp
Details Display
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| Unwinding Unit of CI Flexo Press for PE Coated Paper | Auto Web Guiding System of CI Flexo Press for Wax Coated Paper |
 |  |
| Printing Unit of CI Flexo Press for PP Coated Paper | |
 |  |
| Rewinding Unit of CI Flexo Printing Machine for Hot Dog Wrapping Paper | |
Q&A
- 1. How do your central impression flexo press drive the cylinder rollers in these printing units?
Our machine printing unit include plate cylinder, impression cylinder, fountain cylinder, anilox cylinder, ink tray, flexible plate and doctor blade. We have two types driving system for these cylinder in printing units, timing belts driving and gear motors driving. (click to know more details)
- 2. How to transfer ink from the ink fountain to the printing substrate?
The fountain cylinder pick up ink and pass ink to the anilox cylinder. The the doctor blade removes the excess ink from the smooth non-engraved portions of the anilox roll and the land areas of the cell walls. Anilox cylinder even spread ink in the surface of the flexible plate. Impression cylinder and plate cylinder press substrate and transfer ink to substrate material surface.
- 3. How does your flexo printing press machine improve color registration accuracy?
Color registration system is one of the most factors in the flexo printing machine. We adopt different method to adjust color registration. The best one is full automatic color registration system which can be run in the control panel. You also can choose other method according your products. If your printing pattern is simple, you also can use manual adjustment. (click to know more about color registration)(click to know more about color registration)
- 4. Which type doctor blade install in your stacking type flexographic printing machine?
Our central drum impression and stack type flexo printing machine adopt chamber type doctor blade. Chamber doctor blade system have many advantages, including improved printing quality, reduce ink waste and lower cleaning costs.
- 5. How to choose a set correct ceramic anilox rollers for our products?
Our flexo printing machine adopt ceramic anilox roller as ink transfer roller. You can send your printing pattern AI format file. Our engineers will provide a solution to you according your patter colors and saturation requirements. Because LPI(line per inch) and BCM very impressed printing quality.
- 6. How is the tension of the unwinding and rewinding unit controlled?
Our flexo printing machine adopt magnetic brakes or motors to control unwinder and rewinder tension. Magnetic brake can well control paper rolls and non woven fabric materials tension. If you need print flexible packaging film, we suggest motor control tension. Because motor output tension is more sensitive which is better for pressure sensitive material (such as opp, bopp, pvc film, lamination, self adhesive paper rolls). - 7. Can I add static image inspection system to my flexo printing machine?
Of course you can. The static image inspection system uses a high-resolution camera to capture the printing image in real time, checking whether the "+" pattern printed by each color printing plate roller on the printing material overlaps to ensure color registration accuracy. The operator checks the screen to see whether the "+" pattern of each color on the printing material overlaps. The static image inspection system also provides real-time feedback and alarms. If there is no overlap, the automatic color registration system can be used to adjust, or the plate roller position can be adjusted manually.
- 8. How do I change the plate roller? How long will it take me?
First, you should stop the flexo printing machine to clean up the ink, paper scraps and other debris around the plate roller.
Then, use a wrench to loosen the fixing bolts at both ends of the plate roller, gently tap to separate the old plate roller from the printing roller, and use a lifting device to move the old plate roller out.
Next, put the new plate roller accurately into the installation position and tighten the bolts.
Finally, adjust the pressure between the new plate roller and the printing roller, and start the machine for the first printing. During the process, check whether the plate roller runs smoothly, whether there is any abnormal noise or vibration, and the printing effect.
Usually, it takes 30 minutes to 1 hour to replace the plate roller. If the plate roller is large or the installation position is complicated, it may take 2 hours or more.
- 9. How can I prevent the anilox roller cells from clogging when my flexo printing machine stops running?
The anilox roller can be cleaned in time by hot alkali solution or ultrasonic cleaning, or by using a pre-inking motor. The pre-inking motor converts electrical energy into mechanical energy to drive the anilox roller to rotate slowly, keep the ink circulating in the anilox roller cells, prevent deposition and drying, and help dissolve and disperse some of the dried ink.
- 10. When I need to print on both sides, do I need to add special structure to this machine?
If you choose to print alternately, you need to equip a turn bar. It can be installed between two adjacent printing units, uses rollers and air pumps to flip the material for printing the back side after the front side.
If you choose to print synchronously (printing on both sides at the same time), two independent printing units are required to process the front and back sides respectively.
The specific configuration of the 6-color flexo printing machine is as follows:
3 color groups print the front side, 3 color groups print the back side: suitable for the situation where the front and back printing content is relatively balanced and more.
2 color groups print the front side, 4 color groups print the back side: suitable for the situation where the front printing content is less and the back printing content is more.
4 color groups print the front side, 2 color groups print the back side: suitable for the situation where the front printing content is more and the back printing content is less. - 11. What drying systems can be equip for this model of machine? How do I choose the drying system?
This model machine can be equip with hot air and other drying systems. Different printing materials and inks require different drying systems.
Solvent-based inks are usually dried with hot air drying system or hot air + infrared drying system. Hot air evaporates the solvent and infrared heats the surface. UV inks are usually cured with UV drying system without heating. Water-based inks contain more water and need to be dried with hot air drying system.
Paper materials are generally dried with hot air drying system or hot air + infrared drying system to ensure uniform heating and avoid deformation. Film materials are easy to deform and are often dried with low-temperature hot air drying system. Special materials such as metal foils are often dried with hot air drying system or infrared drying system to prevent damage.
