With the world-renowned flexible packaging company Amcor and brand chain company Wal-Mart successively planning to launch environmentally friendly, biodegradable flexible packaging materials, polylactic acid film has become one of the most popular research directions in chemical research and flexible packaging industry institutions and enterprises in recent years .

Polylactide (polylactide, polylactic acid, abbreviated as PLA), also known as polylactide, is based on corn, wheat, cassava and other starch-containing organisms as the initial raw material, which is decomposed by enzymes to obtain glucose, which is then fermented by soft acid bacteria into lactic acid Finally, after compounding, a biodegradable thermoplastic polyester is obtained. Polylactic acid has good biocompatibility, environmental safety, no toxicity, good mechanical properties and light transparency, and good processing properties. It can be used for plastic film, food packaging bags, medicines, etc. A variety of packaging materials.

The waste products of polylactic acid are decomposed into carbon dioxide and water by light and biological action, and play an important role in eliminating white pollution, protecting the environment and natural ecological balance.