E-Newsletter

Digital Magazine

The Evolution of Digital Embellishment

By Kenneth Stack, Executive Chairman, Engineered Printing Solutions

Package decoration exists in a state of tension. Brand managers want differentiation through tactile varnishes, raised textures, and dimensional effects. Production managers want flexibility to change designs quickly and eliminate tooling costs. For decades, these desires seemed incompatible.

Traditional embellishment methods – screen printing, hot stamping, embossing—delivered excellent quality but required substantial setup investments. Digital printing revolutionized CMYK process color by eliminating tooling, but embellishment stubbornly resisted digitization. The reason was fundamental physics: creating dimensional effects requires depositing far more material than conventional inkjet systems could deliver at production speeds.

That resistance is ending. Recent advances in high-viscosity, high-laydown inkjet technology are bridging the gap between digital flexibility and embellishment quality, opening new economic territory for converters and brand owners.

The Technical Barrier

Standard CMYK inkjet systems deposit approximately 2 to 10 microns of ink per pass — excellent for image quality but barely perceptible to the touch. Embellishment effects require something entirely different. Tactile spot varnishes need 50 to 100 microns of build. Braille dots need even more height to meet accessibility standards.

The obvious solution — multiple passes — proved problematic at production scale. Running substrate through the print zone multiple times creates compounding registration challenges. Each pass must align perfectly with the previous one. Even minor web tension variations can throw off registration, and multiple passes mean proportionally slower production speeds.

Fluid viscosity presented an additional barrier. Varnishes and specialty coatings used in embellishment are often 10 to 100 times more viscous than standard inks. Conventional printheads designed for low-viscosity fluids either could not jet these materials or produced inconsistent results. This created the "trade-off triangle": production speed, material laydown, and fluid viscosity. Early systems could optimize for any two, but not all three simultaneously.

Recent advances in high-viscosity, high-laydown inkjet technology are bridging thegap between digital flexibility and embellishment quality. Image courtesy of Engineered Printing Solutions

The Breakthrough

The breakthrough came from advances in three interconnected areas. High-viscosity jetting capability enables new generation piezoelectric printheads to reliably jet fluids with viscosities up to 1,000 centipoise at ambient temperature —roughly the consistency of honey. This opens access to UV varnishes, primers, and specialty coatings previously impossible to digitally dispense while maintaining precise drop placement and image quality.

Single-pass high laydown technology eliminates the multiple-pass compromise. Modern systems can deposit 15 to 100 microns of material in a single pass, with some configurations reaching 200 microns for braille applications. Recent improvements have doubled throughput speeds; for example, achieving 100-micron laydown at 50 meters per minute where previous systems topped out at 25 meters per minute. The single-pass approach solves the registration problem inherently—with all material deposited in one pass, there are no multiple passes to align.

Precision substrate handling completes the triangle. Embellishment quality depends on maintaining consistent print gap—the distance between printhead and substrate—typically held to sub-millimeter tolerances. Advanced systems now maintain print gaps below 0.8 millimeters even as substrate thickness varies. Fast registration systems achieve full print-to-mark registration within three to four image repeats, minimizing waste during job startup.

New Application Possibilities

Regulatory braille exemplifies the shift. European Union accessibility regulations increasingly require braille on pharmaceutical and consumer product packaging. Traditional approaches used embossing or screen-printed UV varnish, both requiring dedicated tooling for each package variation. Digital high-build inkjet can now produce braille dots meeting ISO 17351 standards—typically 200-micron minimum height—at production speeds approaching 20 meters per minute. More importantly, the braille content can vary with each printed unit, enabling multilingual packaging, regionalized products, and serialized pharmaceutical packages where the braille includes unique identifiers.

Premium spot varnish and raised effects represent another newly accessible territory. Research shows that embellished packages command premium pricing and increase consumer purchase intent. One study found that gold foil stamping could elevate an unknown brand's purchase consideration to match established name brands. But tooling costs confined premium embellishment to products with high volumes or high margins. Craft spirits producers, specialty food brands, and limited-edition cosmetics wanted differentiation but could not justify $5,000 to $15,000 in screen or die costs for a 2,000-unit run.

Digital embellishment changes the math. With zero tooling costs and minimal setup time, spot UV varnish, raised textures, and dimensional effects become viable for runs as small as 500 units. This opens premium decoration to mid-market brands and enables large brands to experiment with limited editions and test market products without committing to expensive tooling.

Economic Implications

Traditional embellishment economics favored volume. A screen-printing setup might cost $5,000 to $10,000 per SKU, with four to eight hours of setup time. But once running, per-unit costs dropped to pennies. For a 100,000-unit run, setup cost amortized to five to ten cents per unit.

Digital embellishment inverts the structure. Setup costs essentially disappear—no screens, no dies, no plates. Setup time drops to minutes. But per-unit material costs run higher because specialized UV varnishes cost more than conventional screen inks. Industry experience suggests digital embellishment becomes compelling for runs between 500 and 50,000 units. 

Perhaps more important than static break-even calculations is the value of flexibility. Digital embellishment enables converters to accept short-run premium products, seasonal variations, test market packages, and regionalized designs—expanding addressable market while strengthening customer relationships. It also eliminates pre-decorated inventory and associated obsolescence risk when designs change, or products do not sell as predicted.

Looking Ahead

Multi-fluid inline systems integrating four, five, or six different functional fluids —white ink, spot varnish, primer, adhesive, security coating — in a single inline pass reduce floor space and simplify workflows while opening new creative possibilities. Hybrid workflows combining conventional printing for high-volume background colors with digital embellishment for variable elements optimize economics.

True mass customization becomes feasible as throughput speeds continue improving. Variable embellishment — where textured or varnished areas differ from unit to unit—enables unprecedented personalization at production speeds. Water-based high-viscosity formulations compatible with advanced jetting systems will further reduce environmental impact while maintaining performance.

Conclusion

Digital embellishment has crossed a threshold from "promising but not quite ready" to "production-viable for defined applications." The technology is not replacing conventional embellishment methods across the board—ultra-long runs with stable designs will likely continue favoring traditional approaches where volume economics remain compelling.

What digital embellishment does is open a vast middle ground previously underserved: production runs from 500 to 50,000 units, high SKU variety, frequent design changes, and applications requiring variable content. This represents a substantial portion of the packaging market, particularly as consumer preferences shift toward personalization, limited editions, and regional variations.

For converters, the strategic question is where their customer mix falls on this spectrum. Operations serving brands that value flexibility, rapid iteration, and design differentiation should evaluate how production-capable digital embellishment fits their portfolio. The technology has matured to production viability, opening new creative and commercial territory where the old compromise between embellishment quality and production flexibility no longer applies.

About the Author

Dr. Kenneth Stack is Executive Chairman of Engineered Printing Solutions (EPS), a leader in direct-to-object printing systems with 40 years of experience and over 2,500 systems deployed globally. Visit https://epsvt.com 

Sun Chemical HD Plates

Subscribe to PFFC's EClips Newsletter