男人ji巴放进女人免费直播观看_日本不卡免费高清一级视频_日韩性videostv另类极品_网易云周报怎么看

Working principle of vacuum three-dimensional packaging machine
Working principle of vacuum three-dimensional packaging machine
Work packaging items installed bags placed on the conveyor belt, the use of gas-electric control system enables the conveyor to move forward a working position, followed by vacuum lid down, seal the vacuum chamber, vacuum pump start pumping by the the vacuum gauge of the electrical contacts on the vacuum control, vacuum degree requirements by the gas-electric control system for heat, cooling, and then opening the lid to start again the next cycle. The cycle program: the conveyor belt into the stop - vacuum - Heat sealing - Cooling - deflation - the vacuum chamber open - belt feed.