The technical principle of vacuum packaging bags, in addition to preventing microorganisms from growing and multiplying inside, is also used to prevent the oxidation of food.
Vacuum packaging bags are divided into frozen vacuum bags and cooking bags. Frozen vacuum packaging bags are widely used, such as: walnut kernels, beef, mutton, rice balls, dumplings and so on. We can find these everywhere in supermarkets. In life, more and more frozen foods choose vacuum packaging bags, the main purpose is to keep quality and freshness.
Frozen vacuum packaging bags have relatively good impact resistance properties, including tensile strength and elongation at break, which reflect the ability of the product to withstand stretching during use. If this item is unqualified, during use Food packaging bags are prone to rupture and damage. After the frozen food is vacuum-packed, it needs to be transported, loaded and unloaded, placed on the shelf, etc. During these processes, the frozen food vacuum bag is easily damaged by external forces. If the impact resistance of the frozen food vacuum packaging bag is poor, it is very easy to break the bag and open the bag. , not only affects the appearance of the packaged products, but also cannot play the role of the packaging itself.
In addition, it also includes gas barrier indicators such as gas permeability; oil resistance indicators, heat resistance, cold resistance, medium resistance; bag sealing and peeling force, bag pressure resistance and drop resistance and other indicators, these indicators reflect the food packaging bag. Reliability of inner packaging protection.
Good ductility, tear resistance, not easy to break
Three-side sealing heat-sealing bags are suitable for most heat-sealing machines
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