How Does Vacuum Packaging Work

The way food is packaged has a great impact on its preservation and quality maintenance. One method is to use vacuum food bags. This method creates a low-oxygen or oxygen-free environment inside the package, thereby inhibiting the growth and reproduction of microorganisms and extending the shelf life of food. So, how does vacuum packaging work specifically?

The working process of vacuum food packaging bags can be divided into the following steps:

• ‌Vacuuming‌: The air in the packaging bag is extracted to create a low-oxygen or oxygen-free environment. This can be achieved by using a vacuum pump or a vacuum machine. During the vacuuming process, the oxygen in the packaging bag is removed, thereby reducing the living conditions of microorganisms‌12.

  
  

• ‌Sealing‌: After the vacuuming is completed, the packaging bag is sealed to prevent the outside air from entering. The purpose of sealing is to maintain the low-oxygen environment in the packaging bag and further extend the shelf life of the food‌13.

  
  

• ‌Deoxygenation effect‌: Since most microorganisms need oxygen to survive when the oxygen concentration in the packaging bag drops to a certain level (usually ≤1%), the growth and reproduction rate of microorganisms will drop sharply. When the oxygen concentration is ≤0.5%, most microorganisms will be inhibited and stop multiplying.

The main advantages of vacuum food packaging bags include:

1. ‌Extend shelf life‌: By removing the air inside the packaging bag, a low-oxygen or oxygen-free environment is created, thereby inhibiting the growth and reproduction of microorganisms and extending the shelf life of food.

2. ‌Keep food fresh‌: A low-oxygen environment can slow down the oxidation process of food, maintaining the freshness and taste of food.

3. ‌Prevent mold and mildew‌: Since microorganisms cannot survive in a low-oxygen environment, food can be effectively prevented from mold and spoilage.

4. Save space: Vacuum sealed bags take up less space than traditional containers and are ideal for storage in the refrigerator or food storage room.

5. Cost-effective: Vacuum packaging can save costs by reducing food waste, making it a practical choice for both consumers and businesses.

At Biopack, we understand the importance of quality packaging solutions. When it comes to providing fresh-keeping packaging for food, we offer a variety of vacuum packaging options, including vacuum bags made of traditional materials and sustainable alternatives, including vacuum food bags made of laminated materials such as PE, BIO-PE, and NK. Our vacuum food bags meet the highest standards of durability and efficiency, ensuring your food stays fresh and delicious.