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<p>Green packaging refers to packaging that is non-polluting to the ecological environment, harmless to human health, and can be recycled and recycled. Today, when people are extremely concerned about the ecological environment, green packaging of food has also become a necessity. Experts predict that green food will dominate the world market in the next 10 years, and green packaging is the passport of green food among consumers, and it is of great significance to the shaping of green food brands. Starting from the coordination of social development and ecological environmental protection, countries all over the world regard weight reduction, reuse, recycling and degradability as the goals and means of ecological environmental protection packaging.</p><p><br></p><p>With the joint efforts of Tsinghua University and the Institute of Microbiology of the Chinese Academy of Sciences, the production of biodegradable plastic polyhydroxybutyrate (PHB) using waste molasses as raw material; the production of biodegradable plastic PHB with genetic engineering bacteria; and the use of hydrolyzed starch as a raw material Raw materials produce biodegradable plastic PHB and its copolymer PHBV, as well as the modification and application of biodegradable plastic PHB. And on this basis, the first large-scale production of the third-generation PHA hydroxybutyric acid copolyhydroxyhexanoate (PHBHHx) in the world was realized on this basis. The biodegradable material polyalkyl fatty acid PHA synthesized by microorganisms has excellent biodegradability, Compatibility, voltage and light activity, the diversity of its structure, and the new material properties brought about by structural changes, make this material have a very broad application prospect in the direction of food packaging.</p><p><br></p><p>The German PSP company has developed a new foam paper production process, and the packaging materials it produces can replace foam materials. This kind of foam uses old newspapers and flour as materials. The recycled old books and newspapers are first cut into shreds, and then ground into fibrous pulp, which is mixed with flour in a ratio of 2 to 1, and the mixed pulp is injected into the extrusion press. Into cylindrical particles. During the extrusion process, the raw material becomes foamed paper by the action of water vapor. Using this kind of foamed paper as a raw material, various shapes of plastic packaging can be produced according to different needs. Foam paper can be formed at one time without chemical additives, and can be recycled and processed after use.</p><p><br></p><p>Using modern super powder technology, the raw material is crushed into particles between 10 and 25ium called superfine powder. Research has found that the use of superfine powder technology to prepare starch-based biodegradable plastics has obvious advantages. Superfine starch has a small particle size, uniformity, a large specific surface area, and a huge surface energy, which significantly improves its fluidity and filling properties. When used in the preparation of biodegradable plastics, it can effectively improve the mechanical properties of the material. On the premise of ensuring the performance of the material, greatly increasing the amount of starch added, which is of great significance for reducing costs, saving petroleum resources, developing the application of natural starch, and increasing the biodegradability of plastics.</p><p><br></p><p>The Southern Regional Center of the United States Agricultural Research Service uses soybean protein, added enzymes and other processing agents to make soybean protein packaging film for food packaging. It can maintain good moisture, prevent oxygen from entering, and cook together with food, which is easy to degrade and reduce the environment. Pollution can avoid secondary pollution of food.</p><p><br></p><p>Scientists in Indonesia have invented the technology of making cardboard using algae. Using two tons of dried algae, one ton of cardboard can be made. The quality of the cardboard made is not the second to ordinary cardboard. And has been commercialized production.</p><p><br></p><p><br></p><p>Most eco-friendly food flexible pouch packaging, contact Huihua</p>
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