Siegwerk Secures European Patent for Ink-Removing Tech
The newly patented primer enables the effective removal of printing inks from plastic packaging during the recycling process.
Updated on Oct. 20, 2026 in Consumer Goods
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Siegwerk has been granted a European patent for its innovative primer technology that facilitates the removal of printing inks from plastic substrates. This advancement aims to improve the quality of recycled plastic by streamlining the deinking process during polymer reprocessing.
Why it matters
The technology addresses tightening environmental standards, such as the Packaging and Packaging Waste Regulation, which mandates increased recycled-content requirements for plastic packaging. By reducing discoloration and contamination, the process helps manufacturers meet future regulatory compliance benchmarks.
The packaging industry faces a projected demand of 2.5 million metric tons of flexible packaging-derived post-consumer recyclate by 2030. This growth is driven by incoming European regulations requiring higher shares of recycled material in plastic packaging.
The players
Siegwerk
Siegwerk is a German-based global provider of printing inks and coatings for the packaging industry that has previously won a German Packaging Award in Gold.
European Patent Office
The European Patent Office is the administrative body responsible for the granting of patents across member states in Europe.
The details
The patented process utilizes a functional primer applied between the plastic substrate and the printing layer to allow for clean removal during alkaline washing. This method works for both solvent-based and water-based inks, specifically targeting complex applications like flexible packaging, labels, and shrink sleeves.
Timeline
May 2025: Siegwerk received US Patent US12291051B2.
October 2026: Siegwerk secured the European patent (EP4107326).
2030: Mandatory recycled content requirements take effect under the PPWR.
Market Landscape
This innovation positions Siegwerk to capitalize on the industry-wide shift toward circular economy models necessitated by evolving international environmental mandates. By securing intellectual property in both the U.S. and Europe, the company is fortifying its role as a key supplier in the transition to high-quality recycled plastic feedstocks.
Improved recycling methods mean that shoppers will eventually encounter packaging that is easier to process into high-quality recycled materials. Over time, this helps reduce the environmental footprint of daily household goods by supporting a more efficient circular supply chain.
The takeaway
Advancements in deinking technology are critical for meeting upcoming global requirements for recycled plastic content. Companies that integrate these processes early can better navigate the transition to sustainable packaging materials while improving the overall quality of recycled output.
Further reading
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