Main functions of food packaging bags

　　What is the function of food packaging bags?

　　1. Physical protection.

　　The food stored in the food bag should avoid squeezing, vibration, temperature difference and other phenomena.

　　2. Food preservation.

　　Food bags can isolate oxygen, steam, oil, etc., and should be considered to avoid leakage during packaging design. Some contain desiccants and deoxidizers to extend the validity period. Removing gas from vacuum containers is also the main method of food packaging. Food preservation, preservation and preservation are its main functions.

　　3. Consistent packaging.

　　The same small things can be put together to save volume. Powder and granular materials shall be sealed.