Brief introduction to double-chamber vacuum packing machine
The vacuum filling package is filled with a pure gas, such as nitrogen, carbon dioxide and oxygen or a mixture of two or three gases. Nitrogen is an inert gas, which acts as filling, keeping positive pressure inside the bag to prevent the air outside the bag from entering into the bag and playing a protective role as an insulation. Carbon dioxide can be dissolved in various kinds of fat or water, and create carbonic acid which is weak in acidity and has function of inhibiting microorganism multiplying such as mold and putrefactive bacteria. Its oxygen has inhibits the growth and reproduction of anaerobic bacteria, maintains the fresh and color of fruits and vegetables, and high oxygen concentration can make fresh meat keep fresh.
How to choose vacuum packing machine
There are many kinds of vacuum packaging machines with its quality various, so the following factors should be taken into consideration.
- A) packing speed. For the sake of improving production efficiency to increase profits, we can choose the vacuum packaging machine with two or more chambers to improve the whole production.
- B) whether other protective gases need to be filled in the packaged. A multi-functional vacuum packaging machine with an inflatable device can be selected.
- C) requirements on the vacuum rate of the packager. If the packaging items need to be in high vacuum conditions to preserve fresh, cavity-style vacuum packaging machine should be selected.
- D) the requirements on the vacuum packaging machine for different material state of the packaged goods.