Disposable Cups Made of Bioplastic PLA (IMAGE) ETH Zurich Caption The use of biodegradable plastic packaging and disposable cups made of polylactic acid (PLA) is spreading. Credit Bo Cheng / ETH Zurich Usage Restrictions This image may only be used in connection with press material from ETH Zurich License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.