General FAQs What are cartons made from? Tetra Pak cartons are made from wood in the form of paperboard, as well as thin layers of aluminium and polyethylene. The most common Tetra Pak carton is 74% paper, 22% polyethylene and 4% aluminium. On average, our cartons contain 73% paperboard.

Why do the cartons need aluminium and polyethylene layers? The aluminium foil serves as a barrier to light, flavour, and oxygen, which enables the contents to last for months without preservatives or refrigeration. The polyethylene acts as a water-tight barrier.

Does Tetra Pak have an environmental policy? Yes, we work very actively on environmental issues. Information on our approach to achieving environmental excellence can be found on our website at

In the UK, we have decided to focus on our sourcing of raw materials, on becoming carbon neutral in our manufacturing and improving eco-efficiency and on increasing employee awareness.  We have also invested heavily in expanding the provision of carton recycling facilities throughout the UK, promoting the availability of these schemes and raising consumer awareness of the environmental benefits of our packaging.

For the latest information on our performance, please see the latest report in our downloads section.

Why is it good to buy milk in cartons? The paperboard in cartons keep out harmful light which can have a harmful effect on many of the nutrients, particularly vitamin B12. It can also affect the taste.

189ml carton of semi-skimmed milk provides a six-year-old with:
- all the vitamin B12 he or she needs
- around half of the calcium, phosphorus and vitamin B2
- about one third of the protein, potassium and iodine
- nearly one tenth of the vitamin C
- around one tenth of the vitamin A, vitamin B1, niacin, vitamin B6, folate, magnesium and zinc he or she needs each day

One glass of milk can supply 300 mg or more of calcium to the body, which represents a third of the Recommended Daily Allowance (RDA) for adults, especially women. Source: Dairy Council

Why is it good to buy orange juice in cartons? There are lots of factors which can influence the quality of the orange juice we drink – from processing and storage to the packaging it’s in. However, the main factors which can cause deterioration in the quality of the orange juice we drink are high storage temperatures, combined with oxygen and light.

For example, at room temperature, just 1 mg of oxygen can degrade 11 mg of Vitamin C. Because Tetra Pak cartons keep the oxygen out, they prevent this degradation of Vitamin C. In fact, the oxygen barrier that Tetra Pak cartons provide is four to five times better than that of a standard transparent package.

What have you done to improve the functionality of your cartons? We have worked hard over the years to ensure that a wide range of caps, closures and straws are available to ensure our cartons are easy to use, whilst doing the job they need to do – protecting the contents within.

Just two examples include our One Step Opening Tetra Top package that offers the perfect marriage between functionality, whilst still using over 50% renewable materials. The second includes our Tetra Recart package that already sits within the canned food aisles. This is lightweight, easy to store and can be opened easily without the need for scissors or other opening devices. To find out more about all the packages we make, please click on Our Portfolio.

What is Aseptic packaging? Aseptic packaging means filling a sterilised package with a sterile food under a confined hygienic environment.  By making sure we provide a package that is able to keep out light and air, we are then able to protect the product within for up to a year without the need for preservatives or refrigeration.