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1, a vacuum: a vacuum chamber together cover, vacuum pumps work, the beginning of the vacuum chamber vacuum packaging bag vacuum at the same time, vacuum table pointer, reaching vacuum rated (by ISJ time relay control) vacuum pump to stop working, stop the vacuum. Work in a vacuum at the same time, solenoid valve 2 IDT links work, sealing a vacuum chamber, to maintain in situ hot-pressing plane.
2, IDT sealing off the outside world into the upper atmosphere through their stomata into the sealing chamber, the indoor use of vacuum chamber with the sealing of the pressure difference between, heat sealing inflatable chamber inflated to make it down on the hot rack , down pocket; At the same time, sealing the transformer and started sealing; At the same time, work time Relay 2SJ, a few seconds after the action, sealing the end.