What is the principle of plastic vacuum bag

plastic vacuum bags also calls the vacuum packing, is based on the principle of atmospheric pressure, the main effect of plastic vacuum packaging is oxygen, to help prevent food mildew deterioration. Plastic vacuum packaging is the packaging and food of oxygen in cells with pump smoke, lose microbiology & other Environment & throughout; In the process. Food plastic vacuum bags can also prevent oxidation, make food not stale, metamorphic to reduce the loss of vitamins A and C.

plastic vacuum packaging materials commonly used double composite thin film or three-layer aluminum composite membrane made of three seal bag. Vacuum packaging machine commonly used outside the cavity and pump type two kinds of models. Our vacuum packing technology is developed in the early eighty s, and vacuum packaging technology in the early ninety s began to use.

carbon dioxide, corruption has inhibitory activity role of bacteria and other microorganisms. There are food such as crisp fragile, easy to deformation and oil food, there are sharp edges or high hardness will puncture the vacuum bag and so on food, after vacuum packaging, plastic vacuum bag filling pressure is greater than the atmospheric pressure outside packing bag, can effectively prevent food compression breakage, deformation, and does not affect the packaging and printing packaging appearance.