ADDITIVES | RECYCLING
Right: ColorMatrix Amosorb Oxyloop-1 from Avient is an oxygen scavenging additive which is accredited for coloured PET bottle-to- bottle recycling
recycling design guidelines specifically for PET bottles to support a circular economy for the European PET value chain. EPBP has created test procedures to assess impact of technologies on rPET properties and established recycling process- es. For example, materials, including additives and any non-PET components in a bottle, can affect colour, clarity, mechanical properties and process- ing. One protocol looks at basic recyclability (ie collection, sortation, reprocessing) using estab- lished recycling technologies. As the circular economy evolves, bottles will need to withstand multiple-loop recycling. A Circularity Evaluation Protocol, updated in July 2025, assesses whether a PET package can be recycled multiple times. The focus is on bottle-to-bottle recycling. A previous protocol for bottle-to-fibre is no longer considered an option.
Scavengers and barriers Avient’s latest is ColorMatrix Amosorb Oxyloop-1, an oxygen scavenging additive specifically formu- lated for use with up to 100% recycled PET (rPET). The new technology is EPBP-accredited for coloured bottle-to-bottle recycling. Avient said it
also increases quality in transparent rPET. The technology is non-nylon based and has no scav- enging delay or deactivation, Avient said. It is intended for low-to-medium term shelf-life applica- tions, including juices, oxygen-sensitive vitamin drinks, ready-to-drink teas, and certain dairy products. Ultraviolet (UV) light-blocking additives may be used in PET bottles to protect the contents in
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IMAGE: AVIENT
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