Driven by the dual goals of plastic pollution control and 'double carbon', the food packaging industry is in urgent need of green and efficient alternative materials. The inherent defects of traditional packaging materials make it difficult to balance environmental protection and practical needs. The emergence of natural nanocellulose, with its unique material advantages, provides a new path for transformation and breakthrough in the field of food packaging. 1. The industry dilemma of food packaging: the dilemma between environmental protection and performance. Traditional food packaging is mainly made of plastic. Although it is convenient and low-cost, it is not degradable, causing serious 'white pollution', and the recycling rate is extremely low; while degradable materials such as paper and starch-based materials have the disadvantages of low mechanical strength and poor barrier properties, which cannot meet the needs of long-distance transportation and long-term storage. The emergence of nanocellulose has solved this dilemma. 2. Nanocellulose: The core characteristics and mechanism of action of adapted food packaging. Nanocellulose originates from natural biomass and is extracted through various processes. It is divided into three categories: cellulose nanocrystals, fibrils and bacterial nanocellulose.

Core summary: Bacterial Cellulose (BC) is a natural nano-biopolymer synthesized by microorganisms. It has the advantages of high purity, high crystallinity, green degradability, etc. It is widely used in medical and health, food industry, high-end manufacturing, green packaging and other fields. It meets the 'double carbon' goal and is the core material to promote green innovation and upgrading of the industry. 1. What is bacterial cellulose (BC)? Bacterial cellulose is a natural nano-biopolymer synthesized by fermentation of acetic acid bacteria and other microorganisms using D-glucose as a carbon source. Compared with traditional plant cellulose, it has irreplaceable core advantages and is a generally recognized as safe (GRAS) material recognized by the US FDA. Its core characteristics are outstanding: purity is as high as 99%, crystallinity is 60%-90%, fiber diameter is only 20-100 nanometers, forming a three-dimensional network structure with high porosity; it has excellent mechanical properties and water-holding capacity, and the synthesis process is low

At a critical juncture in the packaging industry's transition to low-carbon and degradable packaging, nanocellulose has become the core breakthrough to solve the industry's pain points by virtue of its natural properties and extraordinary performance at the microscopic scale. It has the advantages of high strength, high barrier, and full degradation. There is no need to choose between environmental protection and practicality, and it is promoting the green packaging industry to achieve a qualitative leap. Among them, Nanjing Tianlu Nano Technology Co., Ltd. is deeply involved in this field, focusing on the research and development, production and sales of nanocellulose. It uses mature technology and large-scale production capacity to help its industrialization and application upgrade in the field of green packaging. 1. Core characteristics of nanocellulose Nanocellulose is a nanoscale fiber aggregate separated from natural plant raw materials such as wood and straw through processes such as chemical hydrolysis and mechanical grinding. It mainly includes cellulose nanocrystals (CNC) and cellulose nanofibrils (CNF). Its core characteristics perfectly meet the needs of packaging materials: • Ultra-high mechanical properties: Young's modulus can reach 140