1. Eliminates part of the air (oxygen) in the packaging container, which can effectively prevent food spoilage.
2. The use of packaging materials with excellent barrier properties (air tightness) and strict sealing technology and requirements can effectively prevent the exchange of packaging contents, which can avoid weight loss and taste loss of food, and prevent secondary pollution.
3. The gas inside the vacuum packaging container has been eliminated, which accelerates the conduction of heat, which can improve the efficiency of thermal sterilization and prevent the packaging container from rupturing due to the expansion of the gas during heating and sterilization.
In the food industry, vacuum packaging is very common. Various cooked products such as chicken legs, ham, sausages, etc .; pickled products such as various pickles, soy products, and preserved foods, etc. are increasingly using vacuum. package. Vacuum-packed food has a long shelf life, which greatly extends the shelf life of the food.
