Vacuum packaging bag is made up of several plastic films with different functions. Each film plays a different role.
Vacuum packaging bag is divided into transparent vacuum bag aluminum foil vacuum bag. The composite material of vacuum packaging bag is PE plus nylon. Nylon has good barrier performance, which can effectively block moisture gas keep vacuum for a long time. Ordinary plastic bags are just ordinary plastic materials. Such plastic bags have air holes on the surface cannot be vacuum packed even if they are barely packed It will leak after a long time, even after packing.
If you want to keep the freshness of food for a long time, it is achieved by vacuuming, because when the oxygen concentration in the packaging bag is less than equal to 1%, the growth propagation speed of microorganisms will drop sharply. When the oxygen concentration is less than equal to 0.5%, most microorganisms will be inhibited stop propagation, while the vacuum packaging can inhibit the propagation of anaerobic bacteria the deterioration discoloration of food caused by enzyme reaction, Therefore, it needs to be combined with other auxiliary methods, such as cold storage, quick freezing, dehydration, high temperature sterilization, irradiation sterilization, microwave sterilization, salting so on.
If you need vacuum packing bags, please contact us.