The difference between vacuum pumping and internal pumping

the difference:

First, the structure. The external vacuum machine puts the package into the bag, mainly through the suction nozzle, and extracts the air inside to complete the packaging; the internal pumping method directly seals the vacuum indoor air into a vacuum and seals it.

Second, the packaging object. The external vacuum packaging machine is mainly used for the packaging of anti-oxidation products such as electronic products. Because the internal vacuum is very high, most of the products that require high vacuum or cleanliness are environmentally friendly, such as food. Products, etc.

Third, the scope of application. The vacuum degree of the external vacuum packaging machine is generally not very high, but the packaged product can play the role of anti-pressure and anti-collision, and the appearance looks very beautiful; the vacuum degree of the internal vacuum packaging machine can be very high, pumping The effect is very good, the oxygen inside can be said to be no, thus preventing the production and reproduction of microorganisms, thereby prolonging the storage time of the product.

Fourth, the gas source. The external pumping vacuum packaging machine needs to be connected to a gas source to work normally, while the internal pumping type only needs to bring its own vacuum pump to complete the packaging process.

The same thing:

First, the vacuum packaging system has the same composition. A complete vacuum system includes vacuum Pumps, vacuum gauges and vacuum solenoid valves.

Second, the work process. The main workflow of the vacuum packaging machine is vacuuming, heat sealing, returning air and circulation.