... Grade, Suck Grace, Extruding Grade, BOPLA Film Grade, biodegradable PLA IntroductionNew materials, derived from renewable raw materials, are ... trends of today’s materials. These materials have excellent biodegradable property. After disposal, they can be degraded into carbon ... composting. PLA is considered to be the most promising biodegradable plastics in 21 century. PLA is widely used in fields ...