Polyethylene terephthalate (PET)
Description (definition)
Polyethylene terephthalate (PET) is a thermoplastic from the polyester family. It is characterized by its high strength, low gas permeability and excellent chemical resistance. PET is often used in packaging such as drinks bottles and food trays, but is also widely used in textiles and technical applications. Due to its recyclability, PET plays an important role in the circular economy.
An example
A classic example is the use of PET for drinks bottles. These bottles are lightweight, stable and provide a good barrier against gases, making them ideal for bottling carbonated drinks.
Why is PET so common in the packaging industry?
PET combines lightness, stability and an excellent barrier against moisture and gases. It is transparent and cost-efficient, making it particularly suitable for food and beverage packaging. PET is also recyclable, making it the preferred choice for sustainable packaging.
How sustainable is PET compared to other plastics?
PET has a comparatively low environmental footprint as it can be recycled several times. Recycled PET (rPET) is often used for the production of new packaging, textiles or other plastic products, which reduces dependence on new raw materials.
What other applications does PET have besides packaging?
PET is used in the textile industry to produce polyester fibers, which are used in clothing, home textiles and industrial fabrics. In electronics, PET is used as an insulating material or for films, as it is light, stable and heat-resistant.