New technology from Teknor Apex, Pawtucket, Rhode Island, USA, eliminates a property tradeoff that has prevented polylactic acid (PLA) from serving as a ‘green’ alternative to polystyrene (PS) and polypropylene (PP) in high-heat thermoformed sheet for microwavable frozen food trays, lids for hot beverage cups, and carry-out containers such as those for restaurant food, the company announced today.