Internal vacuum packaging machine: the internal vacuum packaging machine is of cavity structure, and the upper and lower chambers form a sealable vacuum working room. The mouth of the food packaging bag is placed between the upper and lower sealing devices, and the vacuum chamber is vacuumized first; The packaging bag is vacuumized at the same time, and then sealed in vacuum state to ensure high vacuum in the packaging bag. Commonly used models are single room and double room.

External pumping type (also known as direct pumping type, pumping tube type, etc.). ) packaging machine: modified atmosphere packaging machine has several functions such as ordinary sealed packaging, vacuum packaging and vacuum inflatable packaging. There is no vacuum working room, so the packaging bag is sleeved on the inflation nozzle and placed between the upper and lower sealing devices and the upper and lower heat sealing devices. The packaging bag is sealed with a sealing device, then the packaging bag is directly inflated in vacuum or vacuum, then the inflation nozzle retreats, and finally the heat sealing device works to seal. Guangke precision machinery technology co., ltd.

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