PPSU Reusable Hot-Meal Rotable Casserole

The Avio-Pack PPSU/PES Reusable Hot-Meal Rotable Casserole is a multi-service meal container designed to replace single-use disposable trays in airline catering operations. It is manufactured from polyphenylsulfone (PPSU) or polyethersulfone (PES) — two high-performance engineering thermoplastics that sit in the same amorphous sulfone family and share a continuous use temperature of up to 180°C. Both materials are routinely used in medical sterilisation equipment for their hydrolytic stability: PPSU in particular maintains its mechanical properties across more than 1,000 steam-sterilisation cycles at 134°C, making it extremely durable under the repeated washing conditions of airline rotable ware programmes. In an inflight catering context, the casserole travels through the full galley cycle: filled cold at the catering unit, loaded into the oven tray in the aircraft galley, heated in the convection oven, plated on the tray for passenger delivery, returned dirty, and passed through an industrial dishwasher before re-entering stock. PPSU and PES withstand this cycle without warping, discolouration, or leaching — and carry inherent flame retardance, an important characteristic for any item loaded in a pressurised aircraft cabin. Compared with CPET or aluminium single-use formats, a rotable casserole programme reduces per-meal consumable cost over time and removes a volume of cabin waste from every flight. For GCC carriers operating high-frequency wide-body long-haul routes with full meal service, a rotable programme based on these casseroles reduces catering consumable procurement frequency while supporting sustainability commitments — relevant given increasing regulatory pressure on single-use plastics across the Gulf.