What is the function of food packaging bags?

1. Physical protection: The food stored in the bag needs to avoid extrusion, impact, vibration, and air.
2. Shell protection: Vacuum packaging or evacuating the air in the bag is also the main food packaging method. Keeping the food clean, fresh, and safe during the shelf life is the primary function of the package.
3. Safe: Vacuum packaging or evacuating the air in the bag is also the main food packaging method. Keeping the food clean, fresh, and safe during the shelf life is the primary function of the package.