Grocery Retailers Rapidly Adopt Certified Molded Fiber Trays
Major grocery chains and berry growers pursuing sustainability positioning and reduced plastic exposure are increasingly specifying certified molded fiber tray formats with documented compostability testing, rather than the conventional rPET clamshell that dominated the category when molded fiber tooling costs were less competitive in prior operating cycles. This shift commands meaningfully higher unit cost than rPET given the enhanced fiber processing and certification testing involved across most qualified suppliers. Manufacturers report certified molded fiber orders now outpacing conventional rPET orders across several major retail accounts tracked this cycle, a clear reversal from a few years earlier. MMA's view of the PET food trays market offers a useful comparison, at USD 4.6 billion in 2025 rising to USD 9.3 billion by 2036, a 6.6% CAGR.
Market Impact: Drives roughly 4% of demand








