Labelling Solutions
How the Flint Group Packaging Solutions Evolution range helps labels “let go”
the same time as curing speed and press stability. The formulation has to work in the curing unit, on the shelf and inside the wash line.
The Evolution range has been developed with this end point in mind. Evolution encompasses deinking primers and caustic-resistant varnishes that are applied like conventional UV fl exo primers and coatings but are designed for recycling performance, either helping ink release cleanly from the substrate in the caustic bath or keeping it fi rmly anchored to the label so the bottle fl ake and wash water remain clear. Used alongside compatible ink systems, Evolution technologies are designed to increase the yield and quality of material recovered from PET recycling without forcing converters to compromise on print quality or press effi ciency.
OPERATIONAL EFFICIENCY MEETS CIRCULAR PERFORMANCE
B
y the time the bottles reach the wash line, the artwork has stopped mattering. What the operators see is clouded, unusable rPET and stubborn labels clinging to fl akes of material. Ink pigments bleed into the bath, dragging down yield by compromising recyclate clarity. In theory, every pack on that conveyor belt complies with a recyclability guideline. But ‘in theory’ is not enough. The wrong ink or coating is enough to turn a label that is supposedly ‘designed for recycling’ into another batch of downcycled plastics. Such failures in mechanical recycling processes do not start in the sorting hall. Instead, it is in the development lab where the question of whether a label can be recycled is answered. For converters, the real test of a labelling solution is what happens after disposal, and that is where the next generation of inks and coatings decides who stays ahead.
WHY RECYCLABILITY ON PAPER FAILS IN PRACTICE
Many converters have become fl uent in design for recycling guidelines, lightweighting targets and mono-material specifi cations. Yet the reality in many recycling plants is that small formulation decisions in inks and coatings can still aff ect the theoretical recyclability of otherwise well-designed packs. Labels that do not fully release and residues that cling to fl akes can turn high-value material into feedstock suitable only for darker, lower-grade applications.
Meanwhile, tightening regulatory pressures
around circularity are prompting retailers and brand owners to change what they look for in packaging. Many are beginning to embed recyclability scores and recycled content targets into their specifi cations, and expectations move from voluntary commitments to contractual requirements. A clear gap is emerging between labels that pass on-paper recyclability checks and those that can actually travel cleanly through real-world mechanical recycling plants. Inks and coatings, such as Flint Group Packaging Solutions’ Evolution deinking and wash-off technologies, become more than background consumables when it comes to closing that gap.
INKS AND COATINGS AS RECYCLING GATEKEEPERS
The chemistry of inks and coatings plays a decisive role in whether PET can achieve the clarity and purity needed for upcycling. Pigments and binders that do not wash away as intended can bleed into the caustic solution and stain the recovered fl akes. Coatings that fail to release completely can leave stubborn residues on the polymer surface that aff ect appearance and, ultimately, the value of the resulting rPET materials. For converters, this presents a unique challenge. The ambition is to select ink and coating systems that achieve the required colour and adhesion standards in use while behaving predictably in recycling conditions. That means thinking about deinking behaviour and wash off performance at
When inks and coatings are designed with recycling in mind, they can also reduce the overall sustainability cost across the value chain. Cleaner rPET and more predictable wash-off behaviour support higher value end markets and improve the economics of closed-loop schemes that brands increasingly depend on to meet regulatory and voluntary targets. Converters that choose systems like Flint Group Packaging Solutions’ Evolution De-Inking Primer and Overprint Varnish can demonstrate both environmental contribution and process discipline, strengthening their position with customers who are scrutinising every aspect of packaging performance. The Evolution product range has been recognised by the Association of Plastic Recyclers (APR) for compliance with critical guidance for PET packaging.
DESIGNING FOR THE WASH LINE
The direction of travel in the label industry is clear. Circularity criteria are being embedded alongside traditional requirements for print quality, cost and shelf impact. This will favour converters who treat the wash line as a core design parameter rather than an afterthought.
In the coming years, inks and coatings that enable clean separation and controlled deinking, such as Evolution, will be key for supporting compliance and defi ning which solutions remain viable. Success will belong to those converters who understand that the story of a label does not end at disposal, but instead in the clarity of the fl akes emerging from the wash line and the material that can be given a second life.
www.convertermag.com
April 2026
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