Training

Preparation (Both Machines):

1. Turn off the machine and unplug it for safety.

2. Ensure the ink system is completely drained and the anilox roller is stationary.

3. Prepare necessary cleaning agents (solvent or water-based, depending on ink type), clean cloths, gloves, and replacement doctor blades.

Remove the Old Doctor Blade:

1. Locate the doctor blade assembly (typically positioned next to the anilox roller).

2. Loosen the screws or fasteners holding the doctor blade in place and carefully remove it from the mounting system.

3. Dispose of the used blade properly.

Clean the Blade Area:

Use a suitable cleaning solvent or cloth to clean the area where the doctor blade sits, removing any residual ink, dried ink, or debris from the doctor blade chamber and anilox roller.

Install the New Doctor Blade:

1. Position the new doctor blade into the holder or chamber, ensuring it is aligned correctly and securely without any gaps.

2. Tighten the screws or fasteners to hold the blade in place, but avoid over-tightening to prevent damage.

Check Alignment and Pressure:

1. For stack-type flexo printing machines: Manually rotate the anilox roller and check that the blade is in proper contact with it. Adjust if necessary for even pressure.

2. For CI flexo printing machines: Carefully adjust the pressure to ensure consistent ink application, avoiding over-inking or under-inking.

Final Inspection and Testing:

1. Run the machine at low speed for a test print. Ensure that ink is being applied evenly without excessive streaks or voids.

2. Monitor the print quality to ensure proper ink application, especially on CI machines with their more complex ink metering systems.

By following these steps, you can maintain both stack-type and CI flexo printing machines efficiently, ensuring extended machine life and consistent print quality.