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Vacuum packaging of desktop vacuum sealing machine

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vacuum packaging put the food into the packaging bag, extract the air in the packaging bag, and complete the sealing process after reaching the predetermined vacuum degree
Vacuum inflatable packaging put the food into the packaging bag, extract the air in the packaging bag to reach the predetermined vacuum, then fill it with nitrogen or other mixed gases, and then complete the sealing process
vacuum packaging technology originated in the 1940s. In 1950, polyester and polyethylene plastic films were successfully used in vacuum packaging. Since then, vacuum packaging has developed rapidly
China’s vacuum packaging technology was developed in the early 1980s, while vacuum inflatable packaging technology began to be used in a small amount in the early 1990s. With the promotion of small packaging and the development of supermarkets, its scope of application is becoming more and more extensive. Some will gradually replace hard packaging, and the prospect is very promising
vacuum, a term translated from Latin vacuo, means nothingness. In fact, vacuum should be understood as a thin space of gas. In a specified space, the gas state below an atmospheric pressure is collectively referred to as vacuum. The degree of gas rarefaction under vacuum is called degree of vacuum, which is usually expressed by pressure value. Therefore, vacuum packaging is not completely vacuum in fact. The vacuum degree in food containers packaged with vacuum packaging technology is usually 600-1333pa. Therefore, vacuum packaging is also called decompression packaging or exhaust packaging
the characteristics of vacuum packaging are as follows:
1. It eliminates part of the air (oxygen) in the packaging container and can effectively prevent food corruption
vacuum packaging machine
2. The use of packaging materials with excellent barrier (air tightness) and strict sealing technology and requirements can effectively prevent the exchange of substances in the packaging content, avoid food weight loss and taste loss, and prevent secondary pollution
3. The gas inside the vacuum packaging container has been eliminated, which accelerates the heat conduction, which can improve the thermal sterilization efficiency and avoid the cracking of the packaging container due to the expansion of gas during heating sterilization
in the food industry, vacuum packaging is widely used in various cooked products, such as chicken legs, ham, sausage, grilled fish slices, beef jerky, etc; Vacuum packaging is increasingly used for pickled products, such as all kinds of pickles, bean products, preserved fruits and other foods that need preservation. The vacuum packaged food has a long preservation period, which greatly prolongs the shelf life of the food

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