When designing food packaging using biodegradable polymer materials, certain principles must be followed. Firstly, attention must be paid to energy conservation, and natural polymer materials should serve as the main basis for designing. The specific design involves several disciplines and fields, and different methods need to be used when designing food packaging for different environments. Food safety must be a key focus, and detailed research and analysis must be conducted on polymer materials to avoid harm to food and the environment. During polymer material development, structure is the most important aspect for creating packaging performance. Product performance must be expanded to have suitable mechanical properties. Predicting material structure is the basis for redesigning polymer-degradable materials to create finished packaging designs.
In the design of food packaging using polymer materials, synthesis is the most critical step. Synthesis technology applies chemical reactions to individual monomers to create high polymer materials. When processing and redesigning naturally occurring polymer materials, specific demands must be observed, and different techniques must be used to address realistic issues. Traditional synthesis technology is inadequate for modern development demands, so material design must be improved based on actual performance needs while still following design principles.
Starch is a nutrient stored in plants, and different types are present in various parts of plants to guarantee plant growth. Starch is completely biodegradable in various environments, and has a short regeneration cycle and low cost, making it the common food packaging biodegradable materials. Modern industry has modified starch to improve cost issues and capitalize on its advantages. Starch is primarily composed of carbohydrates, has stable structure, and good physical properties. These characteristics create new research and development opportunities for edible packaging.
Fiber substances in plants are abundant and are renewable resources with substantial reserves on the planet. Cellulose and lignin as natural high polymer materials have high reserves and simple structure, making them easily replicable high-polymer materials that enable self-degradation. Applications in packaging production would create better environmental value. Not only does cellulose represent a substantial proportion of nature, it can also exist in different environments. Modification of cellulose as a fiber-based polymer material can realize wide application in biodegradable food packaging.
Based on design principles and methods for high-polymer food packaging, traditional packaging has a new direction for development. With social development, attention is being paid to application of high polymer materials in food packaging and the environment. Renewable biodegradable high polymer materials are inadequate for current life demands, necessitating further attention and more energy investment. From a social development perspective, environmentally friendly high polymer materials are increasingly valued, and the development of food packaging biodegradable materials will achieve new heights.