How to use vacuum bags correctly

Public date： 2018-3-22 10:32:24

The vacuum packaging bag is a composite of several plastic films with different functions. The films in each layer play different roles.
The vacuum packaging bag is divided into a transparent vacuum bag and an aluminum foil vacuum bag. The composite material of the vacuum packaging bag is a composite of PE and nylon. Nylon has good barrier properties, can effectively block moisture, and can maintain a vacuum state for a long period of time. The plastic bag is just ordinary plastic. The surface of the plastic bag has pores and cannot be vacuum-packed. Even if it is packaged, it will leak if it takes a long time, or it will leak if it has just been packaged.
If you want to maintain the freshness of foods for a long time, you can't achieve vacuum, because when the oxygen concentration in the bag is ≤ 1%, the growth and reproduction speed of microorganisms will drop sharply. When the oxygen concentration is less than or equal to 0.5%, large Most microorganisms will be inhibited to stop reproduction, and vacuum packaging does not inhibit the propagation of anaerobes and the deterioration and discoloration of foods caused by enzyme reactions. Therefore, it needs to be combined with other auxiliary methods such as cold storage, quick freezing, dehydration, high temperature sterilization, and spokes. According to sterilization, microwave sterilization, salting and so on.