The knowledge and skills of vacuum packaging bags
that you didn't notice have increased. The relevant introduction is explained in detail here. Vacuum packaging bags are mainly divided into transparent vacuum bags and aluminum foil vacuum bags. Generally, the composite material of vacuum bags is a composite of PE and nylon. They are composed of several plastic films with different functions, and each layer of film has a different function. Nylon has excellent barrier properties, which can effectively block moisture and block air to maintain a durable vacuum state. However, the general plastic bag is only a plastic with ethylene as the monomer, and the surface of this bag has pores and cannot be vacuum-treated. Even if the plastic bag is forcibly vacuum-packed, it will leak over time and cause some problems. If you want to maintain the freshness of food for a long time, it cannot be done by vacuuming, because when the oxygen concentration in the packaging bag is less than 1%, the growth and reproduction speed of microorganisms will drop rapidly. When the oxygen concentration is less than 0.5%, most bacteria will be inhibited and reproduced one after another, but under vacuum conditions, the reproduction of anaerobic bacteria and the decomposition and oxidation of food caused by enzyme reactions cannot be inhibited. Therefore, it also needs to be distributed with other auxiliary methods. For example: refrigeration, quick freezing, dehydration, high temperature sterilization, microwave sterilization, salting and other methods. By grasping these methods, you can use the vacuum packaging bag correctly. Here, customers are welcome to come to customize and purchase packaging bags. Make sure it meets your requirements and the quality is guaranteed.
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