Small Household Vacuum Packaging Machine mainly ensures that the packaged items are not affected by the outside air through the following aspects.
The first is the vacuum extraction process. When the packaging machine is started, the vacuum pump starts working, and it will quickly extract the air in the packaging bag. The vacuum pump of the vacuum packaging machine has a certain vacuum speed and vacuum degree, and can generally extract most of the air in the bag to form a low-pressure environment in the bag. For example, some small packaging machines with better quality can achieve a vacuum degree of about -0.08MPa in the bag. In such a low-pressure environment, the amount of air remaining in the bag is very small, which greatly reduces the possibility of outside air entering.
The second is the sealing link. After the vacuum is completed, the sealing device of the packaging machine will immediately seal the packaging bag. The sealing method is mainly heat sealing. By heating the sealing strip, the plastic material of the packaging bag is fused together under the action of high temperature and pressure. The sealing width and strength of the high-quality Small Household Vacuum Packaging Machine are guaranteed. The sealing width can reach several millimeters, which can form a tight sealing channel to prevent outside air from entering from the sealing. Moreover, the sealing temperature and time are usually adjustable and can be optimized according to different packaging bag materials to ensure the quality of the seal.
Furthermore, the packaging material itself also plays a key role. Small Household Vacuum Packaging Machine generally recommends the use of packaging bags with good barrier properties, such as multi-layer composite plastic films. These packaging bags usually contain materials such as nylon and polyethylene. The nylon layer provides good toughness and puncture resistance, while the polyethylene layer can effectively block air and moisture. They work together to further enhance the barrier effect against external air after the packaging machine completes vacuum extraction and sealing.
Finally, some high-end Small Household Vacuum Packaging Machines are also equipped with detection functions. For example, after packaging is completed, it can be detected whether the vacuum degree in the packaging bag meets the set standard, or check whether the seal is complete. Once an abnormality is found, the user can be reminded to repackage in time to ensure that the packaged items are effectively isolated from the outside air.
