Vacuum bags, as the name suggests, is to need some fresh food such as food packaging products such as the bag, after packaging a good product, but also need to take out the air inside the bag to form an internal vacuum.
The function of the vacuum bag is to prevent air circulation, to ensure that the outside air will not be mixed into the bag inside, so as to achieve better preservation of the product, and vacuum bags have their classification, and now in the application, the more common aluminum foil Packaging bags, glassware packaging and so on.
Vacuum packaging bags need to be in need of fresh products, generally in life, fruits and vegetables will not use this packaging preservation method, because fruits and vegetables are fresh food, will breathe, vacuum bag will make the internal loss of oxygen, And fruit and vegetable products in the absence of oxygen under environmental conditions will cause some physiological diseases.