What is a stack flexo printing machine and its advantages？

A stack flexo printing machine is a flexographic press that uses a “stacked” configuration of printing units to apply multiple colors or multiple layers of ink to a substrate. “Stacking” refers to the arrangement of multiple printing units stacked vertically on top of each other. Stack flexo printing machine are able to produce high-quality, multi-color prints with precise registration, making them suitable for a variety of packaging applications, including flexible packaging, labels, corrugated boxes, etc.

The main advantages of stacked flexo printing machines:

1. Diverse printing materials: The stacked flexo press can print a variety of different types of materials, including paper, plastic, film, etc.
2. High printing accuracy: The machine can achieve high-precision printing effects during the printing process, whether it is single-color or multi-color printing. Our printing presses mostly provide 6 colors.
3. High printing speed: The stacked flexo press maintains high-quality printing while also having a high printing speed, thereby improving production efficiency.
4. Strong adaptability: Whether it is a small batch or a large batch printing job, the stacked flexo press can easily cope with it.
5. Easy operation: The operation of the stacked flexo press is relatively simple, which reduces the difficulty of operation and enables operators to master and use it more quickly.
6. Easy maintenance: The reasonable structural design of the machine makes maintenance and repair work simpler and more convenient.

Basic operation flow of stack flexo printing machine：

1. Preparation stage:
Check whether the machine is in normal condition, including whether the mechanical part, electrical part, dampening system and ink system are ready. Prepare the required printing plate or paper according to printing requirements.
2. Install the printing plate:
Install the printing plate correctly on the printing plate cylinder, ensure that the printing plate is flat and free of bubbles, and the corresponding position with the impression cylinder is correct.

3. Debug the ink and water-ink system:
According to the printing requirements, mix the appropriate ink color and viscosity, adjust the water-ink system, maintain the water-ink balance, and avoid the ink being too thick or too thin.

4. Formal printing:
After confirming that the printing effect meets the requirements, start the formal printing operation, monitor the printing process, pay attention to the consumption of ink and water-ink, and replenish it in time.

Stack flexo printing machine offer flexibility in printing options and are commonly used in the packaging industry to produce colorful, eye-catching printed products at efficient production speeds.