Stack Tower Type Flexo Printing Machine is a type of printing machine commonly used in flexo printing technology, where printing units are stacked on top of each other. In these machines, the printing units are placed vertically on top of each other. This design allows the machine to be compact while making the printing process more efficient. The term “stack” means that the units are arranged in a “stacked” manner.

Key Features of the Stack Tower Type Flexo Printing Machine:

1. Stacked Structure of Units:
   • In Stack Type printing machines, each printing unit is arranged on top of each other. This structure allows the machines to have more printing units in a smaller space.
   • Each unit carries ink for a different color and prints on top of the previous layer.
2. Flexible Structure:
   • Stack Type machines are generally suitable for flexible printing surfaces. Printing can be done on various materials like plastic, paper, film, and aluminum.
   • These machines are commonly used in industries with high production volumes, such as the packaging industry.
3. High Printing Speed:
   • These machines can operate at high speeds, making them ideal for high-volume production.
4. Simple Design:
   • Stack Type machines offer a simpler design due to the absence of a central printing drum. This means easier maintenance and repairs.

Working Principle of the Stack Tower Type Flexo Printing Machine:

• In Stack Type machines, each printing unit is arranged to transfer ink for a different color. Each unit carries an ink roll and applies ink to the printing surface.
• Since the units are stacked on top of each other, the printing process is carried out sequentially on each unit. In other words, each color is printed in order, and the process typically takes place on a large roll of material, often called a “web”.
• During the printing process, the ink transfer of each unit is carried out by direct contact with the printing surface.

Advantages of the Stack Tower Type Flexo Printing Machine:

1. Compact Design: The stacking of units allows the machines to be more compact, thus saving space.
2. High Production Capacity: These machines are generally suitable for large production volumes and can print at high speeds.
3. Ability to Print on Various Materials: With the ability to print on flexible materials, it is highly versatile.
4. Low-Cost Maintenance: Due to their simpler design, maintenance and repairs are generally cheaper.

Disadvantages of the Stack Tower Type Flexo Printing Machine:

1. High-Speed Printing Quality: In some cases, achieving consistent printing quality at high speeds can be challenging.
2. Limited Printing Area: These machines are generally not ideal for printing large areas.
3. Mechanical Complexity: The stacked units can sometimes cause technical issues, especially when ink transfer needs to be carefully monitored for each unit.

Which Industries Use the Stack Tower Type Flexo Printing Machine?

• Packaging Industry: Commonly used for printing on flexible packaging materials.
• Labels and Film: Frequently preferred in the film, label, and plastic packaging industries.
• Food Packaging: Suitable for printing in food packaging production.

Conclusion:

Stack type flexo printing machines offer an ideal solution for businesses looking to make flexible, fast, and efficient prints. The stacked arrangement of printing units provides a compact structure, but this design may sometimes lead to limitations in printing quality.