How to adjust the temperature of a milk tea shop sealing machine to prevent cup leakage?

If a milk tea shop sealing machine is leaking, it's not necessarily because the film is bad. Sometimes temperature, pressure, moisture on the cup rim, or slight differences in cup height can cause the same batch of cups to leak intermittently. When it leaks during a rush, the bar staff has to remake the drink, and it's easy for delivery orders to spill inside the bag. When I adjust the sealing…