What is a biodegradable bag? Mar 23, 2023

Biodegradable packaging bag refers to the existence of bacteria and algae in nature and other microbial effects of the solution of the bag. Degradable packaging bags need to add a certain amount of additives (such as starch, modified starch or other cellulose, photosensitizer, biodegradating agent, etc.). Reducing their stability during production, plastic bags then degrade more easily in the natural environment. After China's environmental protection products quality supervision and inspection bureau test, degradable packaging bag indicators meet or exceed China's quality standards.

Biodegradable packaging bag refers to the use of renewable biomass, including crops, trees, other plants and their residues and inclusions as raw materials, through biological, chemical and physical methods made of a new material. Biodegradable bags can be broken down into carbon dioxide and water in natural burial or composting environments where microorganisms are present. After waste, biodegradable packaging bags can be completely decomposed by environmental microorganisms, and then converted into inorganic substances, becoming a part of the natural carbon cycle.

Biodegradable packaging bags can be divided into photodegradable plastics, biodegradable plastics, chemical degradable plastics and composite degradable plastics according to the environmental conditions caused by degradation. Photolysis refers to plastics that absorb sunlight and break down in a photochemical reaction. Photodegradable plastics are plastic materials that age and break apart, lose their mechanical strength and decompose when exposed to sunlight or other strong light sources. As long as structures and groups promoting photodegradation are added to the polymer material, photodegradable plastics can be produced. Methods for producing photodegradable plastics include copolymerization and addition.

Biodegradable packaging bags are widely used in the downstream, and have great development potential in the future, and also have great potential in the packaging industry.  In addition to meet the increasing market requirements for packaging quality and quantity, the development of degradable packaging bags must be based on resource saving, easy recycling and easy environmental degradation. At present, many developed areas have promulgated green packaging legislation measures, which will promote the use of biodegradable packaging bags.

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