In our lives, packaging bags are one of the more common containers. According to our different needs, they play different roles, including food packaging bags. Do you understand what role the bags play? Today, I will briefly tell you what the role of the packaging bag is, right? 1. Transport protection In the process of food transportation, physical phenomena that are not conducive to food transportation, such as collision, squeezing and vibration, cannot be avoided. The food packaging bag can protect the food in the packaging bag well, avoiding adverse factors The damage that came in has protected the food well during transportation. 2. The protective effect of the shell The shell of the food packaging bag can separate food from oxygen, water vapor, stains, etc. Anti-leakage is also a necessary factor for packaging design. Some packages include desiccant or deoxidizer to extend the shelf life. Vacuum packaging or evacuating the air in the packaging bag is also the main food packaging method. Keeping food clean, fresh and safe during the shelf life is the primary function of the packaging bag. 3. Save volume and facilitate classification. Small objects of the same kind are packed into a package is a good way to save volume. Powder and granular objects need to be encapsulated.