Greiner is utilising yellow bags in the manufacture of this solution. Credit: Greiner Packaging.

Greiner Packaging has produced trays made from 70% recycled polyethylene terephthalate (r-PET) for Austrian beverage company Rauch Fruchtsäfte.

Greiner is utilising material from ‘yellow bags’ to produce these sustainable beverage trays.

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During the course of the project, it was demonstrated that r-PET flakes could be generated from post-consumer material through pre- and post-sorting, followed by shredding and washing.

The process involves creating a PET film (made from 70% recycled material) from these flakes. Later, the company’s business unit, Greiner Assistec, thermoforms this film into r-PET trays.

The r-PET flakes come from input materials other than PET beverage bottles such as cups, tubs, and trays.

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In the plastics industry, sustainable packaging is mainly produced by recycling PET bottles into r-PET flakes.

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The potential to recycle additional PET packaging from yellow bags is currently underutilised, according to Greiner.

Greiner Recycling director Peter Fessl said: “By expanding a year ago, we sent a clear signal and underscored that we believe in the potential of r-PET for a sustainable future of the packaging industry.

“Even then, it was our clear goal to drive recycling streams away from [virgin PET] bottles. The project together with Rauch Fruchtsäfte is just one step on this path, to be followed by many more.”

The beverage company is already using bottles made from 100% r-PET in its operations, as part of its sustainable efforts.

Rauch purchasing manager Hanno Mandl added: “As a beverage manufacturer, we are of course particularly keen to ensure that high-quality r-PET from the bottle flow is also available for the production of new r-PET bottles and that alternative forms of packaging are used for the manufacture of other products.”