The development of nanotechnology is one of the most important technology industries emerging at the end of the 20th century. Because nanotechnology has had far-reaching and even revolutionary influences in many fields such as the national economy and the people's livelihood, it has been highly valued by governments and increased investment in capital and talent. With the improvement of nanotechnology theory, the use of nanomaterials continues to expand. The most famous of these is the application of nano-packaging materials in food storage. Before the advent of nano-packaging materials, food packaging materials were mostly made of polymers, and the packaging materials made by them were difficult to meet the respiratory strength of various fruits and vegetables. Especially when the respiratory strength of fruits and vegetables reaches a very high range, most membranes do not allow the oxygen and carbon dioxide ratios in the package to reach the best. In the 1990s, nano-packaging materials came into being. The use of nano-packaging materials in food storage is mainly reflected in: 1. The new packaging materials made by using nano-composite technology have more advantages than traditional nylon plastics. Use it to package food, the food is less corroded and has a longer shelf life. It also has a fresh-keeping effect on flowers. 2. The excellent properties of composite nano-packaging materials make it popular in the field of food packaging. Nano antibacterial packaging materials, nano high-isolation packaging materials, nano-preservative packaging materials, etc. have been used in food packaging. 3. Nano silver powder is used in food packaging, both antibacterial and fresh. It has good antibacterial effect on bacteria and molds, and can be added to food packaging materials to adhere to long-term antibacterial effects, and will not cause color changes or food contamination due to external factors such as dissolution or light; meanwhile, silver powder in nano-packaging materials has ethylene The catalytic effect of oxidation, adding nano silver powder to the fresh-keeping packaging material, can reduce the ethylene content and achieve the purpose and effect of fresh-keeping of fruits and vegetables. Article source address: http:// Stuffed Animals Plush Toys,Stuffed Animals,Plush Toys for Babies,Big Plush Toys,Soft Plush toys AMERICA DIVISION OF TOP SHINE CO.,LTD. , https://www.uni-goods.com