Tetra Pak chooses paper-based over polymer-based barrier
As climate change and global food systems call for low-carbon renewable materials, the carton packaging industry seeks alternatives to the aluminium foil layer that helps us to keep food safe and available everywhere. Many solutions are based on polymer barriers in the package, but we have chosen paper over plastic. Rather than increasing the carbon footprint of a package, paper allows us to reduce it. Also, when combined with plant-based polymers, the paper-based barrier increases the total renewable content of a carton to 90% – cutting the carbon footprint by one-third.1
Like all Tetra Pak paperboard, the paper used in our new barrier is sourced from FSC™-certified forests and other controlled sources. The paper-based barrier features an ultra-thin, nanometre metalised coating. Together with other layers in the packaging it protects against oxygen, light, moisture and bacteria. In this way food safety is not compromised and shelf-life is comparable to that of the aluminium foil layer.
The power of paper to protect
Scoring high on renewability, recyclability, and low carbon footprint, paperboard is now seen as the most environmentally sound material for beverage packaging2. It has a low weight, and yet it has the strength, rigidity and robustness to protect aseptic products throughout their extended life cycles. Of course, Tetra Pak has always believed in the power of paper. The high share of paperboard in our cartons today is what gives them a lower carbon footprint than other packaging options3 in the dairy and JNSD segments. And the paper-based barrier takes that even further – pushing the average of 70% paper content to approximately 80%. This alone is a major step towards our fully renewable aseptic carton package ambition.
Step inside this collaborative journey
Discover the challenges behind this project and how it has been turned into reality through expert collaboration with our customer Lactogal, in Portugal. A story which has led to the launch of the Tetra Brik® Aseptic 200 Slim Leaf carton with a paper-based barrier – a first within food carton packages distributed under ambient conditions.
Step inside this collaborative journey
Discover the challenges behind this project and how it has been turned into reality through expert collaboration with our customer Lactogal, in Portugal. A story which has led to the launch of the Tetra Brik® Aseptic 200 Slim Leaf carton with a paper-based barrier – a first within food carton packages distributed under ambient conditions.
Good news for recyclers
More benefits of a paper-based barrier are expected further downstream where efficient recycling depends on the yield of paper fibre. Specifically, cartons with a higher fibre yield are more attractive to paper mills. What’s more, the paper-based barrier changes the material structure of the carton from three to just two main materials – paper and polymers. This represents an opportunity for recycling infrastructures and their efficiency.
Securing our food systems in tomorrow’s low-carbon circular economy
As the global population increases and the impacts of climate change intensify, securing the future of our food systems has never been more critical. Research and results demonstrate that the paper-based barrier can pave the way towards fully renewable and recyclable packaging – essential for tomorrow’s low-carbon circular economy. If you believe in the power of paper to safeguard food and the planet, join us on this innovation journey.
Follow #ThePowerOfPaperToProtect on social media.
1 Source: Carbon Trust™- verified Tetra Pak ‘Carton CO2 Calculator’ model version 9 (valid from 2023-01-01). Scope: cradle-to-grave measurement of a Tetra Brik® Aseptic 200 Slim Leaf carton with plant-based polymers in coating and paper-based barrier compared to a standard Tetra Brik® Aseptic 200 Slim Leaf package. Geography: EU Industry data.
2 Source: Sustainable Packaging Consumer Research 2023, Tetra Pak’s latest environmental survey, run in summer 2023 and comprising a total of 14,500 consumer interviews based on an online questionnaire in 29 markets: Germany, France, UK, Italy, Belgium, Denmark, Netherlands, Poland, Portugal, Romania, Spain, Sweden, Saudi Arabia, Turkey, South Africa, Egypt, China, India, Japan, Australia, Indonesia, Philippines, South Korea, Vietnam, Brazil, USA, Mexico, Colombia, Argentina.
3 Source: ifeu 2020, “Comparative Life Cycle Assessment of Tetra Pak® carton packages and alternative packaging systems for beverages and liquid food on the European market."
4 Paper-based, with the lowest possible carbon footprint, made solely from responsibly sourced renewable or recycled materials, and fully recyclable. This means creating cartons that are fully made of renewable or recycled materials, that are responsibly sourced, thereby helping to protect and restore our planet's climate, resources and biodiversity; contributing towards low carbon production and distribution; are convenient and safe, therefore helping to enable a resilient food system; and are fully recyclable.