With the continuous improvement of people's living standards, the demand for various convenience foods has also increased greatly, which has further driven the rapid development of China's food packaging industry. Vacuum packaging machine is one of the fastest developing packaging machinery, with broad development prospects. There are many types of vacuum packaging machines, and the following will introduce you to the vacuum packaging machine.
Definition
People often put the packaged material on the outside of the vacuum chamber to complete the vacuum packaging equipment called vacuum packaging machine.
Principle
The vacuum packaging machine is put into the packaging bag of the packaged material through the air extraction nozzle, the air is evacuated, the air is exited, and then the sealing is completed.
Peculiarity
1. Part of the air (oxygen) in the packaging container is excluded, which can effectively prevent food spoilage.
2. The use of packaging materials with excellent barrier (air tightness) and strict sealing technology and requirements can effectively prevent the exchange of packaging content substances, which can avoid food weight reduction and loss of taste, 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 thermal sterilization efficiency and avoid the rupture of the packaging container due to the expansion of the gas during heating and sterilization.
In the food industry, vacuum packaging applications are very common, and various cooked products such as chicken thighs, ham, sausages, etc.; Pickled products such as various pickles, soy products, preserved fruits and other foods that need to be preserved are increasingly vacuum packed. Vacuum-packed food has a long shelf life, which greatly extends the shelf life of food.
