Vacuum packaging is a method of packaging products, especially food items, to remove air from the package before sealing. The process involves placing the product in a plastic film or bag, removing air from the inside, and then sealing it tightly. This creates a vacuum or an atmosphere with reduced oxygen levels inside the package.
The mold and spoilage of food are mainly caused by the activities of microorganisms, and most microorganisms (such as molds and yeasts) need oxygen to survive. The vacuum packaging uses this principle to extract oxygen in the packaging bag and food cells, so that microorganisms lose their living environment.
Experiments have proved that when the oxygen concentration in the packaging bag is ≤1%, the growth and reproduction speed of microorganisms will drop sharply. When the oxygen concentration is ≤0.5%, most microorganisms will be inhibited and stop reproducing. (Note: Vacuum packaging cannot inhibit the growth of anaerobic bacteria and the deterioration and discoloration of food caused by enzyme reactions. Therefore, it must be combined with other auxiliary methods, such as refrigeration, quick freezing, dehydration, high temperature sterilization, irradiation sterilization, microwave sterilization, salt Marinated etc.)
The main purpose of vacuum packaging is to extend the shelf life of the product by minimizing the growth of aerobic bacteria or fungi that require oxygen to thrive. By removing the air, which contains oxygen and moisture, the rate of oxidation and microbial growth is significantly reduced, thereby preserving the quality and freshness of the packaged product.
In addition to extending shelf life, vacuum packaging can also help protect the product from freezer burn, prevent dehydration, and maintain the overall quality of the item. It is commonly used for a variety of food products, including meats, cheese, fish, and fresh produce, as well as non-food items like pharmaceuticals and electronic components.
Overall, vacuum packaging is an effective method for preserving and protecting products, both perishable and non-perishable, by creating a controlled environment within the package to minimize deterioration and spoilage.
If you are considering purchasing a vacuum packaging machine at this time, then Huaqiao Packing Machine Factory(KUNBA) is definitely an exciting choice.
Established in 1987 by Mr. Zhu Hua，Wenzhou Huaqiao Packing Machine Factory, the owner of KUNBA brand, is a professional manufacturer of vacuum packers, sealing machines for bags, carton sealers, cup sealer, thermal shrink tunnel machine, strapping machine, filling machine and date printer.As an enterprise in China's packaging machinery industry, we are famous for making excellent semi-automatic strapping machines. The KUNBA brand means the stability of our products.The first continuous band sealing machine SF150 was invented and developed by our research team.
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