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Tetra Pak tests an industry-first: a fibre-based barrier to replace the aluminium layer

Marking a breakthrough in the company’s journey towards a fully renewable aseptic package, this innovative fibre-based material substitutes the aluminium layer, with the ambition of reducing the carbon footprint while making the post-consumer cartons more attractive for recyclers.

Tetra Pak tests an industry-first: a fibre-based barrier to replace the aluminium layer

Following the successful completion of a 15-month commercial technology validation of a polymer-based barrier replacing the aluminium layer, Tetra Pak is now moving to the next level of development - testing a fibre-based barrier that is a first within food carton packages distributed under ambient conditions.

This step marks yet another breakthrough in the company’s long-term roadmap towards developing an aseptic package that is fully renewable, fully recyclable and carbon-neutral.

The aluminium layer currently used in food carton packages plays a critical role in ensuring food safety; and even though it is thinner than a human hair, it contributes to a third of the green-house gas emissions linked to base materials used by Tetra Pak.

With a view to reducing this climate impact, a commercial technology validation was conducted in Japan starting late 2020, using a polymer-based barrier to replace the aluminium layer. This helped to understand the value chain implications of the change, and to quantify the carbon footprint reduction. It also confirmed adequate oxygen protection for vegetable juice, while enabling increased recycling rates in a country where recyclers favour aluminium-free cartons.

Incorporating these learnings, the company is now testing a new fibre-based barrier, in close collaboration with some of its customers. A first pilot batch of single serve packs featuring this industry-first material are currently on shelf for a commercial consumer test, with further technology validation scheduled later in 2022.

This initiative underscores Tetra Pak’s approach to design for recycling, where increasing the paper content is critical, and also supports end-user expectations. Based on recent global research, approximately 40% of consumers confirmed they would be more motivated to sort for recycling if packages were made entirely from paperboard and had no plastic or aluminium.

Gilles Tisserand, Vice President Climate & Biodiversity, Tetra Pak, comments: “Early results suggest that the package with a fibre-based barrier will offer substantial CO2 reduction when compared to traditional aseptic cartons, together with comparable shelf life and food protection properties. We believe this development will therefore act as a breakthrough in reducing climate impact. In addition, cartons with higher paper content are also more attractive for paper mills; thus, this concept presents clear potential for realising a low carbon circular economy for packaging.”

Eva Gustavsson, Vice President Materials & Package, Tetra Pak adds: “Addressing complex issues such as climate change and circularity requires transformational innovation. This is why we collaborate not just with our customers and suppliers, but also with an ecosystem of start-ups, universities and tech companies, providing us access to cutting edge competences, technologies and manufacturing facilities.

To keep the innovation engine running, we are investing €100 million per year and will continue to do so over the next 5 to 10 years to further enhance the environmental profile of food cartons, including the research and development of packages that are made with a simplified material structure and increased renewable content. There is a long journey ahead of us, but with the support of our partners and a strong determination to achieve our sustainability and food safety ambitions, we are well on our way.”

www.tetrapak.com

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