Silano Vittorio, Bolognesi Claudia, Castle Laurence, Cravedi Jean-Pierre, Engel Karl-Heinz, Fowler Paul, Grob Konrad, Gürtler Rainer, Husøy Trine, Kärenlampi Sirpa, Mennes Wim, Penninks André, Smith Andrew, Tavares Poças Maria de Fátima, Tlustos Christina, Wölfle Detlef, Zorn Holger, Zugravu Corina-Aurelia, Dudler Vincent, Gontard Nathalie, Nerin Cristina, Lampi Eugenia, Papaspyrides Costantine, Croera Cristina, Volk Katharina, Milana Maria Rosaria
EFSA J. 2017 Jul 14;15(7):e04899. doi: 10.2903/j.efsa.2017.4899. eCollection 2017 Jul.
This scientific opinion of the EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF Panel) deals with the safety evaluation of the recycling process PEGRA-V (EU register number RECYC0137), which is based on the Starlinger IV+ technology. The input of the process is hot caustic washed and dried poly(ethylene terephthalate) (PET) flakes originating from collected post-consumer PET containers, containing no more than 5% of PET from non-food consumer applications. In this technology, washed PET flakes are dried and crystallised in a reactor, then extruded into pellets which are further crystallised in a second reactor. Crystallised pellets are then preheated in a third reactor and fed to the solid-state polycondensation (SSP) reactor. Having examined the challenge test provided, the Panel concluded that the three steps, drying and crystallisation, extrusion and crystallisation and SSP are the critical steps that determine the decontamination efficiency of the process. The operating parameters that control their performance are well defined and they are the temperature, the gas flow and the residence time for the drying and crystallisation step, and the temperature, the pressure and the residence time for the extrusion and crystallisation step and the SSP step. Under these conditions, it was demonstrated that the recycling process is able to ensure that the level of migration of potential unknown contaminants into food is below a conservatively modelled migration of 0.1 μg/kg food. Therefore, the Panel concluded that the recycled PET obtained from this process intended to be 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. Trays made of this recycled PET are not intended to be used, and should not to be used in microwave and conventional ovens.
欧洲食品安全局食品接触材料、酶、香料和加工助剂专家小组（CEF 小组）的这一科学意见涉及基于 Starlinger IV+技术的回收工艺 PEGRA-V（欧盟登记号 RECYC0137）的安全性评估。该工艺的输入物是来自收集的消费后聚对苯二甲酸乙二酯（PET）容器的经过热碱洗和干燥的 PET 薄片，其中非食品消费应用的 PET 含量不超过 5%。在这项技术中，洗涤后的 PET 薄片在反应器中干燥并结晶，然后挤出成颗粒，这些颗粒在第二个反应器中进一步结晶。结晶颗粒随后在第三个反应器中预热并送入固态缩聚（SSP）反应器。在审查了所提供的挑战测试后，专家小组得出结论，干燥和结晶、挤出和结晶以及 SSP 这三个步骤是决定该工艺去污效率的关键步骤。控制其性能的操作参数定义明确，对于干燥和结晶步骤是温度、气流和停留时间，对于挤出和结晶步骤以及 SSP 步骤是温度、压力和停留时间。在这些条件下，已证明该回收工艺能够确保潜在未知污染物向食品中的迁移水平低于保守模拟的 0.1 μg/kg 食品的迁移量。因此，专家小组得出结论，从该工艺获得的再生 PET 用于制造与所有类型食品接触的材料和制品，用于在室温下长期储存，无论是否热灌装，高达 100%使用时，不被认为存在安全问题。由这种再生 PET 制成的托盘不打算使用，也不应在微波炉和传统烤箱中使用。
