How does vacuum packaging machine keep fresh
    Hits£º520         Date£º2021/4/2
About the preservation principle of vacuum packaging machine, many people ask Xiaobian. Next, let's answer it for you. If you don't know, don't you come over?
1. Deaeration
In this way, food metamorphosis can be avoided. The principle is relatively simple, because food mildew and metamorphosis are mainly caused by the activities of microorganisms, and most microorganisms need oxygen for their livelihood. Vacuum packaging uses this principle to pump out the oxygen in packaging bags and food cells, so that microorganisms lose their "living environment".
Vacuum packaging machine can also avoid food oxidation, because fatty food contains a lot of unsaturated fatty acids, which is easy to produce oxidation effect after touching with oxygen, making food taste and metamorphosis. In addition, oxidation also causes the loss of vitamin A and vitamin C, and the unstable substances in food pigments are affected by oxygen, making the color dark. Therefore, deoxidation can effectively avoid food degeneration and maintain its color, aroma, taste and nutritional value.
2. Inflation
In addition to the effect of deoxidization and quality guarantee, the vacuum inflatable packaging also has the effect of compression resistance, gas blocking and preservation, which can more effectively maintain the original color, aroma, taste, shape and nutritional value of food for a long time. In addition, many foods are not suitable for vacuum packaging, but need to use vacuum inflatable packaging. Such as crunchy and fragile food, easy to caking food, easy to deform and remove oil food, food with sharp edges and corners or high hardness will pierce the packaging bag, etc. After the food is vacuum inflated by the food packaging machine, the air pressure inside the packaging bag is greater than that outside the packaging bag, which can effectively prevent the food from being crushed and deformed under pressure, and does not affect the appearance and printing decoration of the packaging bag.
The above knowledge is about the introduction of vacuum packaging machine, if you still don't understand, please continue to visit our website or call for advice.
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