4evergreen publishes updated Circularity by Design Guideline and enhanced Collection & Sorting Guidance

The Circularity by Design Guideline (Version 4) provides clearer, more practical direction for designing paper-based packaging that flows efficiently through collection, sorting, and recycling processes. The new edition introduces a chapter on Sorting Disruptors, helping designers anticipate how specific components may affect sorting technologies and overall recycling yield. Updated terminology, compatibility thresholds, and strengthened advice on adhesives, coatings, inks, and barriers further support alignment across the value chain.

“Version 4 offers a clearer, more aligned framework for enhancing the design of paper-based packaging so it delivers optimal recycling performance in operational systems. With the PPWR now entering into force, clarity and collaboration are essential. This guideline equips companies to make confident design choices, protect fibre quality, and keep materials circulating at scale,” says Davide Braghiroli, Director Global Packaging Standards and Regulation, Tetra Pak.

In parallel, 4evergreen released Version 4 of its Guidance on the Improved Collection and Sorting of Paper-Based Packaging for Recycling. It reinforces the recommendation for a two-stream household collection system—one stream for paper and board, and one for lightweight packaging—to reduce contamination and direct materials to the appropriate recycling infrastructure. The Guidance also expands technical insights on sorting technologies, including NIR and AI-based systems.

“Version 4 provides further focus on sorting, with a new annex that assesses: current on-the-ground and at scale technologies being used, sorting test practices, and the latest technological advances,” states Tytti Peltonen, vice president of Corporate Affairs at Metsa Group and Co-Chair of 4evergreen. She continues: “This updated Guidance provides clear pathways for building efficient, future-proof collection and sorting systems for paper-based packaging. At the same time, it highlights the need for further value chain alignment on sorting test protocols and procedures to help strengthen Europe’s ability to meet PPWR requirements.”

Both documents are available on the 4evergreen website and complement the Recyclability Evaluation Protocol, together forming the alliance’s Technical Toolbox.