Glossary

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Termsort icon Definition
Closure

Cap. It allows PET bottles to be airtight even after being opened. Closures are generally made of polypropylene. During the recycling process a soak/sink mechanism allows to separate polypropylene from PET.
Coextrusion

Involves a blow-moulding process of performs containing two or more layers of different material. Coextrusion allows the use of recycled materials or material with barrier properties. The recycled or barrier material is sandwitched between two layers of virgin resin
Compounding

The incorporation of additional ingredients needed for processing in order to have optimal properties. These ingredients may include additives to improve a polymer's physical properties, stability or processability. Compounding is usually required for recycled materials.
CSD

Carbonated Soft Drink