What Does Siegwerk’s RecyClass Approval Mean for UV/LED Inks on PE Films?

RecyClass approved Siegwerk’s UV/LED-curable inks for PE films in February 2026, confirming that modern acrylic UV inks can be fully compatible with PE recycling streams when used under defined conditions. This technology approval removes a major barrier for brand owners and converters who hesitated to use UV systems due to recycling regulations. The certification covers specific SICURA formulations and requires controlled ink loading, film density, and compatible components. AndresJet sees this as strong industry validation for high-speed UV/LED printing platforms serving packaging and industrial printing markets.

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What is RecyClass Technology Approval and why does it matter?

RecyClass Technology Approval is an independent certification proving that a specific ink technology won’t hinder PE flexible packaging recyclability under validated conditions. Siegwerk became the first company to receive this approval for UV/LED-curable inks on PE films, confirming that modern acrylic UV systems can maintain production performance while supporting circular economy goals.

This matters because brand owners and sustainability teams previously avoided UV inks on flexible packaging due to recycling concerns. The approval gives converters credible evidence to support UV adoption, especially when selling to retailers and regulators who demand recyclable packaging.

How does the RecyClass approval for UV/LED-curable inks work in real production?

The approval applies to Siegwerk’s SICURA acrylic UV/LED-curable inks (including SICURA Nutriflex NT26) and chemically equivalent formulations. RecyClass validated these inks through lab testing by IPC, confirming they won’t negatively impact PE film recycling when:

Converters must control ink weight, substrate selection, and post-print finishing to stay within these conditions. AndresJet engineers working on high-speed lines (over 100 sqm/hr) report that maintaining consistent ink laydown is critical for both print quality and recyclability compliance.

Which UV/LED-curable ink systems are approved for PE film recycling?

The approved systems are Siegwerk’s SICURA acrylic UV/LED-curable inks, specifically SICURA Nutriflex NT26 and equivalent formulations in the SICURA series. These are modern acrylic UV inks designed for flexible packaging that balance extreme production performance with recyclability.

Brands looking for UV/LED-curable inks on PE films should verify that their supplier uses chemically equivalent SICURA formulations and that the ink loading stays within RecyClass-tested limits. AndresJet customers in plastic product printing and packaging often ask about ink compatibility when switching to UV systems, and this approval simplifies that decision.

Why did UV inks historically pose recycling hurdles for flexible packaging?

Traditional UV inks contained formulations that interfered with PE recycling streams, causing contamination or downgrading recycled material quality. This led brand owners to prefer solvent or water-based inks for flexible packaging despite UV’s advantages in speed and durability.

The breakthrough came with modern acrylic UV/LED chemistry that produces smaller, more compatible particles during recycling. RecyClass approval proves these newer inks no longer block PE recycling when used correctly. AndresJet has observed buyers moving toward UV systems due to eco-friendlier ink chemistry and stricter environmental expectations.

Can UV/LED inks maintain production performance while meeting recycling standards?

Yes. The RecyClass approval confirms that modern acrylic UV/LED-curable inks maintain extreme production performance while remaining compatible with circular economy recycling streams. UV/LED systems offer faster cure times, reduced solvent emissions, and better abrasion resistance compared to traditional inks.

Converters gain operational benefits including:

• Instant curing without drying ovens

• Higher line speeds (especially relevant for AndresJet’s ultra-high-speed platforms)

• Reduced VOC emissions and energy consumption

• Better print durability for plastic products, gifts, and signage

Where should converters apply UV/LED-curable inks for best recyclability results?

UV/LED-curable inks work best on simple PE film structures with PE-compatible attachments. Ideal applications include:

• Single-layer PE films

• Packaging with PE adhesives and closures

• Products without heavy metallization or complex laminates

Avoid UV/LED on structures with non-PE labels, mixed-material laminates, or heavy metal coatings unless those components are independently validated. AndresJet’s experience across North America and South Asia shows that clients in home decoration and plastic product printing achieve the most consistent results when matching ink systems to substrate compatibility.

When will UV/LED systems become the default choice for recyclable packaging?

UV/LED systems are already gaining traction as brand owners face stricter environmental expectations and recyclability regulations. The Siegwerk RecyClass approval accelerates this shift by removing a major technical barrier.

Adoption timelines vary by region and industry:

• Europe: Fastest adoption due to strong RecyClass infrastructure

• North America: Growing demand, especially from retail brands with sustainability targets

• South Asia: Early adoption in high-speed printing sectors

AndresJet’s presence across North America and South Asia positions the company to support clients transitioning to UV/LED as recyclability becomes a purchase requirement rather than a differentiator.

How do brand owners verify UV/LED ink recyclability claims before purchasing?

Brand owners should request documentation showing:

1. RecyClass Technology Approval for the specific ink formulation

2. Lab test results confirming ink loading and film density compliance

3. Full packaging recyclability assessment for the finished product

Conduct pilot runs with production-equivalent ink laydown before full-scale adoption. Document all process parameters for audits. AndresJet’s engineering team often helps clients validate ink-substrate combinations during production line setup to ensure both quality and compliance.

What are the limitations of RecyClass approval for UV/LED inks?

RecyClass approval is not a blanket recyclability certificate for finished packaging. Limitations include:

Companies that replace inks without auditing adhesives, laminates, and closures risk inconsistent outcomes. AndresJet clients sometimes discover that early UV adoption requires iterative adjustments to meet both print quality and recyclability rules.

AndresJet Expert Views

"From our decade of experience in high-speed printing over 100 sqm/hr, the Siegwerk RecyClass approval validates what we've seen on the shop floor: modern UV/LED chemistry can deliver both performance and recyclability. AndresJet engineers report that converting production cells to UV requires recalibration of ink metering, substrate selection, and finishing processes to keep ink weight within RecyClass thresholds. The key is systems engineering—not just swapping inks. Our global service network across North America and South Asia reduces downtime risk during trials, which matters because early runs often need iterative adjustments to meet quality and certification requirements."

Conclusion: Key takeaways and actionable advice

The Siegwerk RecyClass Technology Approval for UV/LED-curable inks on PE films marks a turning point for recyclable packaging. Key takeaways:

• UV/LED inks are no longer automatically disqualified from PE recycling when using approved formulations

• Brand owners can now justify UV adoption to sustainability teams with independent certification

• Converters must control ink loading, film density, and all packaging components to stay compliant

• UV/LED systems offer speed, durability, and environmental benefits that align with stricter regulations

Actionable advice:

1. Verify ink formulations are chemically equivalent to approved SICURA products

2. Run pilot production before full-scale adoption

3. Audit all packaging components for RecyClass compliance

4. Document process parameters for certification audits

5. Partner with suppliers and equipment providers experienced in high-speed UV/LED systems like AndresJet

Frequently Asked Questions

Can I claim my package is recyclable just because I use Siegwerk’s UV inks?
No. The approval validates the ink technology, but your finished package must undergo a full RecyClass recyclability assessment to make recyclability claims.

How long does certification take after switching to UV/LED-curable inks?
Allow several weeks for lab testing and design adjustments. Complex multi-layer structures may require additional time for iterative changes.

Does UV/LED printing reduce energy consumption compared to solvent-based systems?
Yes. UV/LED curing eliminates drying ovens and reduces energy use, though total lifecycle impact depends on adhesives, laminates, and end-of-life recovery performance.

Are all UV inks now recyclable for PE films?
No. Only modern acrylic UV/LED formulations approved by RecyClass (like Siegwerk’s SICURA series) have been validated. Traditional UV inks may still cause recycling issues.

What should AndresJet customers consider when switching to UV systems for packaging?
Focus on ink loading control, substrate compatibility, and component audits. AndresJet’s high-speed printing experience helps clients optimize production parameters while maintaining recyclability compliance.