Biodegradable film has been developed, designed and produced different products at this stage: 1. Degradable resin and masterbatch include fully biodegradable resin, photo-microbial dual-degradable masterbatch and composite degradable masterbatch, etc. 2. Degradable film products include compost bags, garbage bags, packaging bags, electronic packaging bags, agricultural mulch films, restaurant supplies, golf spikes and foaming materials, etc. 3. General plastic products include packaging bags, garbage bags and office equipment. In my country, biodegradable films are mainly used in agriculture, food packaging materials, degradable polyurethane foam nets and disposable plastic lunch boxes.

The outstanding advantage of biodegradable film is biodegradation and no environmental pollution. It is the general trend of development to replace polyethylene and other plastics, and the replacement of plastic film products is also urgent. It is predicted that the market capacity at this stage will reach 30 billion yuan, and it will grow at a rate of 30-50 per year.

Biodegradable films include biodegradable natural polymer materials such as cellulose, starch, paper, etc., as well as biodegradable films obtained by biogenesis or chemical synthesis. Biodegradable film refers to the natural film that exists in nature under the standards of nature such as soil layer and/or sand, and/or under special conditions such as retting or anaerobic digestion or in water-soluble cell culture fluid. Microbial strains act to dissolve and dissolve into carbon dioxide (CO2) or/and methane gas (CH4), water (H2O), acidified carbonates of contained elements, and new biomass fuels.

It should be noted that each kind of biodegradable film, including paper, etc., requires certain environmental conditions for its dissolution. If it does not meet the dissolution conditions, especially the living conditions of microorganisms, its dissolution will be relatively slow; in addition, it is not Each biodegradable film can dissolve rapidly under all natural environmental conditions. Therefore, when looking at biodegradable films, it should be judged whether it is a biodegradable film or not by considering its natural environmental conditions and analyzing the structure of the material itself.