Real degradability, that is, total degradation, that is, synthesis in the chemical sense, means that after degradation, material molecules no longer have the characteristics of plastics, and become a complete substance that can be digested by the soil, and will not destroy the environment. At present, our country is using a substance called polylactic acid (PLA). Speaking of yogurt we usually drink, we will not feel strange. The main ingredient of yogurt is lactic acid, and polylactic acid is consumed from lactic acid, which belongs to pure natural biological products. But this is only one kind. At present, the United States, France, Japan and other countries have developed and applied agricultural by-products as raw materials to ferment lactic acid and then consume polylactic acid, such as corn, potatoes, beet and other pure natural organisms to stop extracting.
In theory, as long as the plastic bags consumed with such raw materials are truly degradable and environmentally friendly. At present, degradable plastics are simple products. Whether the development and improvement of any new technology can be marketized or not is recognized by the masses. There is an important trade-off criterion, that is, whether it has the quality of substitutes as a substitute. Our country has also made a lot of efforts in this area, and has spent a lot of money to build project teams and factories in this area, but because of various reasons, some technicians have been contracted to research and development departments similar to his organization. The so-called fully degradable plastic products have high demand for consuming technology, waste of corners and corners, and the poor high temperature resistance of polylactic acid materials is also a difficult problem to deal with. There is no market conditions to improve in a large scale for the time being.