What do you need to check if the vacuum packaging machine is not sealed?

If the vacuum machine is not sealed, what will happen will continue to happen, vacuum packaging is not sealed for many reasons

1, There is oil in the pocket and it is not sealed well. This is not a technical or quality issue, choose funnel packaging, sealing or simple operation before packaging

2, fully heating temperature, adjust the thermometer, the standard vacuum bag can be heated for about 2 seconds

3, Check whether the metal strip under the insulation cloth is damaged

4, Whether the vacuum pump works normally

5, The heating cloth is always clean to prevent debris from melting in the heating cloth

6, Check the pressure of the driving cap

7, pay special attention to the aging of the heating wire

8, whether the heat seal relay is broken

9, How is the contact between the heating wire and the copper screw

10, Whether the transformer works