Japanese scientists and researchers from the pine wood research and development of a wood flour plastic packaging material, made by removing polyol from the wood flour, and then react with isocyanate, resulting in polyurethane. This wood powdered plastic is extremely heat resistant and can be biodegraded and can be used to make temperature-resistant packaging bags. Russian experts add f-dehydrated mineral salts and enzymes to food packaging polymers. The inner surface of the packaging bag rich in these substances can absorb excess moisture and kill bacteria, thus improving the internal environment of the packaging bag. - The use of wheat flour to add glycerol, glycol, polysilicone and other mixed dry, and then heated by 150 kg per square meter pressure hot plastic plastic film translucent, the advantages of using wheat plastic packaging food can be decomposed by microorganisms .