Cylinder cleaning: Ultrasonic or Spray? A comparison of technologies

Discover the differences between ultrasonic and spray cleaning systems:
efficiency, precision, speed, and results.
Which technology is the right solution for you?

In the flexographic and gravure printing sector, cylinder cleaning—the heart of every printing press—is a critical step to ensure stable color reproduction, reduce start-up waste, and maintain the efficiency of your production department.

Choosing the most suitable cleaning system is not a simple task. Today we analyze the most widely used technologies: ultrasonic cleaning with the Ditomsounds line and high-pressure spray cleaning.

Both solutions are widely used, but they differ in their operating principle, results achieved, compatibility with different types of cylinders, and impact on company time and resources.
.

In this article, we analyze in detail the advantages and limitations of each method, helping you understand which is the best choice for your production based on the type of printing, washing frequency, and the level of contamination to be removed.

Feature

Ultrasonic Cleaning (Ditomsounds)

Spray Cleaning

Operating Principle

High-frequency sound waves generate microbubbles that deeply remove residues.

Nozzles spray detergent at high pressure onto the surface of the anilox.

Residue Removal Capacity

Very high → Penetrates the cells and removes even dried or polymerized residues.

Effective for surface contamination. Requires multiple spray passes to remove residues from the bottom of the cells. For stubborn residues, specific detergents are needed.

Cleaning Uniformity

Maximum → Homogeneous cleaning across the entire surface of the anilox.

Depends on nozzle orientation → Possible less-clean areas. Potential difficulties in cleaning very high-linecount anilox rollers.

Compatibility with HD anilox (> 500 LCM)

Excellent → Removes residues even from the smallest cells.

Limited → Difficulty in cleaning very high-linecount anilox rollers.

Cleaning Time

Short → Just a few minutes, depending on the level of contamination.

Longer → Requires one or more passes for the washing cycle, with additional cycles needed for rinsing and drying.

Practicality

Top → No need to disassemble bearings and gears, which remain outside the tank. The machine’s structure is very compact, extending only slightly beyond the length of the anilox.

Medium → May require disassembly of gears, if present, as the entire anilox must fit inside the machine.
The machine’s structure is larger compared to an ultrasonic system.

Detergent Consumption

Optimized → Ditomsounds detergent can be reused multiple times thanks to the decanting process.

Optimized → Ditom Cleaner detergent can be reused multiple times thanks to the decanting process.

Hidden Issues

None → The patented USP system ensures thorough cleaning even on very high-linecount anilox rollers.

None → Controlled high pressure for the surface of the anilox rollers.

Placement

Simple → Can be positioned next to the printing press.

Simple → Can be placed next to the printing press.

Ideal for…

Printers who want deep, uniform, and fast cleaning.

Printers looking for a machine for scheduled cleaning cycles.

Additional Advantage

The operator positions the anilox and starts the cleaning cycle.
At the end of the process, the cylinder is rinsed with an air/water spray gun.

Advantage: In case of printing emergencies, the anilox volume can be immediately restored. The operator can stop the cleaning cycle at any time without waiting for the machine to complete all phases (washing, rinsing, and drying).

Compared to any other technology—whether spray, laser, or alternative systems—cleaning with Ditomsounds machines proves to be the ideal solution for precision, speed, and uniformity of cleaning.

In a production environment where unexpected machine downtime is always a risk, having a machine that thoroughly cleans in just a few minutes—without the need for complex disassembly or multiple cycles—is a real operational advantage.

That’s why more and more printers are choosing ultrasonic technology as their primary method for cleaning anilox and gravure cylinders, recognizing its effectiveness on every type of ink and varnish—including metallic finishes, which are challenging even for most traditional laser systems.

Unlike traditional ultrasonic systems that lack the patented USP wave modulation technology and do not guarantee uniformity and precision in cleaning, Ditomsounds machines offer an innovative, efficient, and sustainable solution—perfectly aligned with the quality and continuity demands of both modern flexographic and gravure printing.

…And thousands of installations confirm their reliability over the years. If you’re curious, request testimonials from printers!

More details

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