With the continuous improvement of people's living standards, the demand for various convenient foods has also greatly increased, which has further driven the rapid development of China's food packaging industry. Vacuum packing machine is one of the fast developing packaging machines, which has broad prospects for development. There are many kinds of Vacuum packing machines. Now let's introduce Vacuum packing machines.
definition
People often put the packaged materials outside the vacuum chamber to complete Vacuum packing equipment called Vacuum packing machine.
principle
The Vacuum packing machine is used to put the air extraction nozzle into the packaging bag of the packaged goods, exhaust the air, exit the air extraction nozzle, and then complete the sealing.
characteristic
1. Excluding some air (oxygen) from the packaging container can effectively prevent food spoilage and spoilage.
2. The use of packaging materials with excellent barrier properties (airtightness) and strict sealing techniques and requirements can effectively prevent the exchange of substances in the packaging content, which can avoid weight loss and loss of taste of food, as well as prevent secondary pollution.
3. The gas inside the Vacuum packing container has been eliminated, which accelerates the heat transmission, which can improve the thermal sterilization efficiency, and also avoid the rupture of the packaging container due to the expansion of the gas during the heating sterilization.
In the food industry, Vacuum packing is widely used, and various cooked products such as chicken legs, ham, sausage, etc; More and more Vacuum packing is used in pickles, such as various Pickled vegetables, bean products, preserved fruits and other foods that need to be kept fresh. The food after Vacuum packing has a long shelf life, greatly extending the shelf life of food.