The vacuum packing property can automatically draw out the air inside the package and reach the predetermined degree of vacuum and complete the sealing process. It can also be refilled with nitrogen or other gas mixture and then complete the sealing process. Vacuum packaging machines are often used in the food industry. After being vacuum-packed, foods can be resistant to oxidation, thereby achieving long-term preservation.
First, the definition of external pumping vacuum packaging machine: People often put the packaged goods on the outside of the vacuum chamber to complete the vacuum packaging equipment called external pumping vacuum packaging machine. Outlet vacuum packaging machines are designed primarily for vacuum packaging of larger packages. Second, the principle of external pumping vacuum packaging machine: In contrast to the internal pumping vacuum packaging machine structure, the external pumping vacuum packaging machine is through the suction mouth into the packaging bag of the packaged material, to empty the air, withdraw the suction valve , and then complete the seal. Outlet vacuum packaging machines generally have 1~4 suction nozzles. The power source of the sealing line is generally a cylinder or a motor. Third, the classification of external pumping vacuum packaging machine: External pumping vacuum packaging machine according to the location of the packaging of different places, the level of external suction vacuum packaging machine and vertical vacuum pumping machine. The horizontally-placed vacuum-packing machine has its packaging placed horizontally, and the vertically-out-pumped vacuum packaging machine has its packaging placed vertically. Horizontal vacuum packers are more common in the market.
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