Scientific Opinion on the safety assessment of the processes “Roxane Nord” and “Stute”, based on KRONES® technology used to recycle post-consumer poly(ethylene terephthalate) (PET) into food contact materials

KRONES® technology, food contact materials, plastic, poly(ethylene terephthalate) (PET), recycling process, safety evaluation
First published in the EFSA Journal
6 November 2014
22 October 2014
Scientific Opinion


This scientific opinion of the EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids deals with the safety assessment of the recycling processes Roxane Nord and Stute (EU register number RECYC017 and RECYC104, respectively) which are based on the KRONES® technology. The input to the processes is washed and dried poly(ethylene terephthalate) (PET) flakes originating from collected post-consumer PET containers and containing no more than 5 % PET from non-food consumer applications. In this technology, washed and dried PET flakes are transferred by two heated conveyors under atmospheric pressure into a reactor where they are decontaminated at high temperature under vacuum. Having examined the results of the challenge test provided, the Panel concluded that three steps, the pre-heating and the heating in the conveyors and the decontamination in the vacuum reactor, are the critical steps that determine the decontamination efficiency of the processes. The operating parameters to control the performance of these critical steps are temperature, residence time, and, for the vacuum reactor, also pressure. Under these conditions, it was demonstrated that the recycling processes are able to ensure that the level of migration of potential unknown contaminants into food is below the conservatively modelled migration of 0.1 μg/kg food. Therefore, the Panel concluded that the recycled PET obtained from these processes when used up to 100 % for the manufacture of materials and articles for contact with all types of foodstuffs for long term storage at room temperature, with or without hotfill, is not considered of safety concern.

Panel members at the time of adoption

Claudia Bolognesi, Laurence Castle, Jean-Pierre Cravedi, Karl-Heinz Engel, Paul Fowler, Roland Franz, Konrad Grob, Rainer Gürtler, Trine Husøy, Wim Mennes, Maria Rosaria Milana, André Penninks, Vittorio Silano, Andrew Smith, Maria de Fátima Tavares Poças, Christina Tlustos, Fidel Toldrá, Detlef Wölfle and Holger Zorn.
Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids
fip [at]
EFSA Journal 2014;12(11):3886
On request from
Member States - France, Germany
Competing interests
One member of the Panel did not participate in the discussion on the subject referred to above because of potential conflicts of interest identified in accordance with the EFSA policy on declarations of interests.