Vacuum packaging machine is also called food sealing machine. After vacuumizing, the good sealing function makes the market share of vacuum packaging equipment higher. If the packaging bag is not vacuumized and simply sealed, the packaging cost will be lower. How is the vacuum packaging machine sealed? 1. Before sealing the vacuum packaging machine, you need to set the parameters such as vacuumizing, vacuumizing time, sealing time, inflation time and cooling time, press the start button and start working. 2. If an external vacuum packaging machine is used, a suction nozzle will be used when working. Put the suction nozzle into the packaging bag, tidy up the smoothness of the packaging bag, press the foot switch, and the vacuum packaging equipment starts vacuumizing, sealing and cooling. In order to ensure a good sealing effect, the bag mouth should be as flat as possible. After sealing, there is a cooling time. After all the work is completed, take out the packaging bag at one time and seal it. If the vacuum packaging machine is poorly sealed, find out the reason, and properly adjust the sealing time and cooling time to get the best packaging effect and set it according to this value. When vacuumizing, if the air in the bag is not exhausted, it needs to be pumped again. The suction nozzle of the external vacuum packaging machine should extend into the bag as far as possible. The packaging materials used should also match the contents of the packaging, so as to reduce the pumping time and improve the work efficiency. If you don't need to inflate the bag, you need to turn off the inflation function of the vacuum packaging machine, otherwise it will affect the vacuum pumping effect. If there is a sudden failure in the work, you can press the red emergency stop button, and the vacuum packaging machine will stop any work and return to the original standby state.