Barrier properties are achieved in PET food packaging by using additives, coatings or multi-layers. An analytical model to predict the contamination during multiple recycling steps of this packaging is proposed. This model shows that lower contents of non-PET materials should be achieved to promote a valid recycling chain. A possible solution is using nanotechnologies because of the very small amount of added material. Results are shown in the case of PVD coatings with aluminum target, and PET nano-composites. In both cases, less than 0.1 wt% of aluminum is able to reduce the oxygen transmission ratio of the PET packaging down to 50% of the virgin PET sheet.
Quadrini, F., Bellisario, D., Santo, L. (2018). Design of nano-filled pet sheets with enhanced barrier properties. In ASME 2018 13th International Manufacturing Science and Engineering Conference, MSEC 2018 (pp.V002T04A010). American Society of Mechanical Engineers (ASME) [10.1115/MSEC2018-6413].
Design of nano-filled pet sheets with enhanced barrier properties
Quadrini, Fabrizio;Bellisario, Denise;Santo, Loredana
2018-01-01
Abstract
Barrier properties are achieved in PET food packaging by using additives, coatings or multi-layers. An analytical model to predict the contamination during multiple recycling steps of this packaging is proposed. This model shows that lower contents of non-PET materials should be achieved to promote a valid recycling chain. A possible solution is using nanotechnologies because of the very small amount of added material. Results are shown in the case of PVD coatings with aluminum target, and PET nano-composites. In both cases, less than 0.1 wt% of aluminum is able to reduce the oxygen transmission ratio of the PET packaging down to 50% of the virgin PET sheet.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
