Tetra-style carton
Moderate releasePaperboard laminated with polyethylene and often aluminium foil
The short answer
A genuine middle ground. Mostly paperboard by weight with a thin inner polyethylene layer that does contact the food, but no bottle wall to shed and full light protection.
What actually drives release
- Thin inner polyethylene film in direct contact with the liquid
- Cut edges and seams where the laminate is exposed
- Plastic screw caps and spouts on many designs
When it gets worse
- Stored warm for long periods
- Contents are fatty, such as cream or coconut milk
Better options
- Glass bottle
- Returnable glass
- Make it yourself from dry ingredients
Where you'll find it
Plant milksUHT dairyJuicePassataStock and broth
Scan what you actually buy
Packaging changes the answer more than the brand does. Scan your product with MicroPlastics for a 0–100 exposure score and a lower-plastic version of the same thing.
Scan my productFrequently Asked Questions
Do tetra pak cartons contain plastic?
A genuine middle ground. Mostly paperboard by weight with a thin inner polyethylene layer that does contact the food, but no bottle wall to shed and full light protection.
What makes tetra-style carton worse?
Stored warm for long periods. Contents are fatty, such as cream or coconut milk.
What should I use instead of tetra-style carton?
In order of preference: Glass bottle, Returnable glass, Make it yourself from dry ingredients. Packaging is usually the cheapest variable to change in any product decision.
Sources
- Earth Action with rePurpose Global (2026). Microplastic migration from food and beverage packaging (reported May 2026). Forbes.
- Qian N, Gao X, Lang X, et al. (2024). Rapid single-particle chemical imaging of nanoplastics by SRS microscopy. Proceedings of the National Academy of Sciences (PNAS).
- Winkler A, Santo N, Ortenzi MA, et al. (2022). Does mechanical stress cause microplastic release from plastic water bottles?. Water Research.
- Hernandez LM, Xu EG, Larsson HCE, et al. (2019). Plastic teabags release billions of microparticles and nanoparticles into tea. Environmental Science & Technology.