Vacuum packaging machines can automatically extract the air in the packaging bag and complete the sealing process after reaching a predetermined vacuum level. It can also be filled with nitrogen or other mixed gas, and then complete the sealing process.
Vacuum packaging machines are often used in the food industry, because after vacuum packaging, food can resist oxidation, so as to achieve the purpose of long-term preservation.
Vacuum packaging technology originated in the 1940s. In 1950, polyester and polyethylene plastic films were successfully used for vacuum packaging, and since then, vacuum packaging machines have developed rapidly. With the promotion of small packaging and the development of supermarkets, its scope of application is becoming more and more extensive, and some will gradually replace hard packaging, and the prospects are very promising.