By Nick Harvey, Technical Director, Apex International

The label printing industry is evolving at pace. Hybrid configurations are becoming more common, digital technologies continue to grow, and ink systems are becoming more complex and more demanding. Yet despite this change, flexographic printing remains the dominant production method for labels globally.

The reason is simple: flexo continues to adapt.

At the center of this adaptability sits one of the most critical – but often misunderstood – components in the process: the anilox roll. No longer just a volume carrier, the modern anilox has become a precision-engineered metering system that directly influences print quality, press efficiency, and ultimately profitability.

What has changed is not just how anilox rolls are manufactured, but how they are specified and used. The shift away from traditional thinking toward efficiency-driven models is redefining best practice across the industry.

From Volume to Efficiency: A Shift in Thinking

Historically, anilox selection has been driven by volume and line screen. Higher volumes were used for solids, finer engravings for process work, and multiple rolls were required to cover the range of applications on a press.

In reality, this created complexity.

Multiple anilox changes, inconsistent print results, higher cleaning requirements, and increased inventory costs all became accepted as part of the process. However, deeper industry analysis and real-world production data have demonstrated a critical insight: Ink transfer is not determined purely by volume. It is governed by efficiency.

Modern studies show that only around 30 % of the engraved volume is actually transferred to the substrate, meaning that two anilox rolls with different specifications can deliver very similar ink films if their release characteristics differ.

This realization has driven a fundamental change in how anilox technology is approached.

The Evolution of Engraving Technology

The traditional 60° hexagonal engraving has served the industry well for decades. It offers a balanced structure that provides predictable ink delivery and durability across a wide range of applications. However, as press speeds have increased and ink systems have evolved, its limitations have become more apparent.

Deeper cells, particularly at higher volumes, tend to retain ink. This reduces transfer efficiency and increases the risk of plugging. The result leads to inconsistency, more frequent cleaning, and reduced performance over time.

In response, engraving technology has advanced significantly.

Modern laser systems now enable highly controlled geometries, including open cells and channel-based structures. These designs focus on improving ink evacuation rather than simply increasing volume capacity. By reducing cell depth and improving release characteristics, they allow printers to achieve the same – or better – ink film thickness using lower volumes.

This is where the industry begins to shift from “How much ink can the cell hold?” to “How efficiently can the ink be delivered?”

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Engraving Technology Comparison

Ink Evolution and Its Impact on Anilox Selection

At the same time as engraving technology has evolved, ink systems have undergone their own transformation.

The modern label press must handle a wide variety of chemistries, from water-based inks to UV and LED systems, high-opacity whites, and increasingly sophisticated coatings. These inks bring performance benefits, but they also introduce new challenges.

Higher pigment loads, increased viscosity, and more complex formulations all place greater demands on the anilox. In particular, they expose weaknesses in traditional engraving structures.

Cell engravings are more prone to plugging, especially when handling high-opacity or heavily pigmented inks. Deep cells can struggle to release thicker ink systems efficiently, leading to inconsistent density and increased waste.

The relationship between ink and anilox is therefore critical. It is no longer sufficient to specify an anilox in isolation. The system must be considered as a whole.

Ink Type vs Anilox Requirement

The Reality of Production: Complexity vs Performance

In many label operations today, complexity remains one of the biggest hidden costs. Multiple anilox rolls per press, frequent changeovers, cleaning cycles, and troubleshooting all contribute to lost production time. While each individual action may seem minor, the cumulative effect is significant.

Studies and field data indicate that a large percentage of anilox rolls in production suffer from some degree of cell blockage or inefficiency. This directly impacts print quality, increases downtime, and reduces overall equipment effectiveness (OEE).

The traditional model – based on a wide range of specifications – is increasingly at odds with the demands of modern production environments.

The “Less is More” Model

The industry is now moving toward a more streamlined approach. Rather than increasing the number of anilox specifications, leading printers are reducing them. By adopting high-efficiency engraving technologies, it becomes possible to cover a broader range of applications with fewer rolls.

This approach delivers multiple benefits:

• Faster job changeovers
• Reduced cleaning requirements
• Lower inventory and capital investment
• Improved consistency across repeat jobs

Most importantly, it aligns the anilox strategy with the commercial realities of modern printing.

Operational Comparison: Traditional vs. Optimized Approach

Flexo’s Competitive Advantage

While digital and hybrid technologies continue to grow, flexo remains uniquely positioned due to its ability to combine speed, quality, and versatility.

Modern anilox technologies are playing a key role in maintaining this position. By enabling consistent ink delivery across a range of applications, they support:

• Expanded color gamut printing (ECG)
• High-impact embellishments
• Specialty coatings and tactile finishes

These capabilities allow flexo to move beyond commodity printing and deliver added value – without sacrificing efficiency.

The Apex Perspective

From an Apex standpoint, the direction is clear. The focus is no longer on increasing specification complexity but on simplifying the process through more efficient ink transfer technologies. Systems such as GTT reflect this philosophy by using channel-based designs to deliver consistent ink films that have a broader range of print capabilities .

This approach supports both operational efficiency and sustainability by reducing ink usage, waste, and downtime while maintaining the highest levels of print quality.

Conclusion

The evolution of anilox technology represents a broader shift within the label printing industry. It is a move away from complexity and toward control, efficiency, and repeatability.

The key takeaway is simple but powerful: Reducing variables isn’t a compromise. It’s the fastest route to higher profitability.

By embracing modern engraving technologies and aligning anilox selection with ink systems, printers can reduce complexity, improve consistency, and unlock significant gains in profitability. “Less is More” is no longer a concept. It is a competitive advantage.