How to use the Flexo Printing Machine

Flexo printing machines are widely used in packaging printing due to their unique advantages and can print on various flexible materials. Mastering their operating steps is crucial for ensuring printing quality, improving efficiency, and prolonging equipment life. The following details the steps.

I. Preparations Before Starting
1.Equipment Inspection
Examine the machine's overall appearance for damaged, deformed, or loose parts like the frame, printing rollers, and ink fountains.
Check the transmission system (belts, chains) for proper tension and wear, and ensure electrical components work.
2.Material Preparation
Prepare suitable printing plates and check their quality.
Select the right ink, check its viscosity, and pour it into the ink fountain.
Install the flexible material roll on the unwinding device.
3.Cleaning and Lubrication
Clean ink-related parts to remove residue.
Lubricate moving parts like guide rails and bearings.

II. Starting and Debugging
1.Starting the Machine
Turn on the power, start the control system, and then the motors of key components. Listen and watch for abnormalities.
Plate Roller Installation and Debugging
Install the plate rollers correctly and adjust their position and pressure.
2.Ink System Debugging
Start the ink pump, check ink supply, and adjust the doctor blade's angle, pressure, and position. Also, check and adjust ink viscosity.
III. Trial Printing and Quality Adjustment
3.Trial Printing Operation
Conduct a trial print and obtain samples.
4.Quality Adjustment
For unclear patterns, adjust plate roller pressure.
For inaccurate colors, check ink mixing and drying conditions and adjust the doctor blade.
For overprinting errors, check plate roller positions, transmission synchronization, and material tension.

IV. Formal Printing and Monitoring
1.Starting Formal Printing
After trial and adjustment, start formal printing with set quantity.
2.Monitoring the Printing Process
Monitor material supply, rewinding, and printing quality. Check for quality fluctuations and observe equipment parameters.

V. Shutting Down and Maintenance
1.Shutting Down the Machine
Stop printing, turn off motors and ink pump, clean ink parts, and cut off power.
2.Equipment Maintenance and Care
Clean the machine, disassemble and clean plate rollers, maintain the transmission system, and check the electrical system.
By following these steps, operators can ensure the efficient and stable operation of flexo printing machines and produce high-quality prints.