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What is the vacuum packing bag?

Author:vacuum packing bag    Time:14/12/11    Click:
    Vacuum bagin the vacuum, vacuum should be understood as a gas is relatively thin space., within a specified space under an atmospheric pressure gas state are collectively referred to as vacuum.Vacuum and vacuum packaging actually is not completely, USES the vacuum packing technology of food container vacuum usually in 600-600 pa (standard atmosphere is: 101325 pa).So, also called vacuum packaging vacuum packaging or exhaust packaging.

    Vacuum bags are widely used in food industry, this is because the air inside the vacuum packing will all take out seal, maintain bag at high stress state, the rare air of low oxygen effect, make no microorganisms living conditions, in order to achieve the purpose of food fresh, disease-free corrosion occurs.Vacuum deaeration besides inhibiting microbial growth and reproduction, another important function is to prevent the oxidation of the food, because the oil kind food contains A lot of unsaturated fatty acid, by the effect of oxygen oxidation, sour food, deterioration, in addition, the oxidation also make vitamin A and C loss, volatile substances in food pigment by the role of oxygen, make the color darker.So oxygen can effectively prevent food spoilage, maintain its color, aroma, taste and nutritional value.Generally in salt baked food, pickles, soy products, meat products, instant food, such as soft canned play a role.In addition, there are many food not suitable for using vacuum packaging and vacuum packaging must be used, such as crisp fragile food, nutrition food, easy deformation oil food, have sharp edges or high hardness will puncture food packaging bags, etc.And vacuum packaging in addition to the main function of the vacuum packaging of oxygen quality features, main and compressive strength, the air resistance, the preservation effect, can more effectively to make food for a long time to keep the original color, aroma, taste, shape, and nutritional value.
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