The definition of vacuum

Implications

Vacuum, this term is translated from Latin vacuo, its meaning is nothingness. In fact, vacuum should be understood as a space where the gas is relatively thin. In the specified space, gas states below one atmosphere are collectively referred to as vacuum. The degree of gas thinning in a vacuum state is called the degree of vacuum, which is usually expressed as a pressure value. Therefore, the vacuum package is not actually completely vacuum, and the degree of vacuum in the food container packaged using the vacuum packaging technique is usually 600-1333 Pa. Therefore, vacuum packaging is also called decompression packaging or exhaust packaging. Vacuum packaging machine

Vacuum packaging technology originated in the 1940s. In 1950, polyester and polyethylene plastic films were successfully used for vacuum packaging. Since then, vacuum packaging has been rapidly developed.

Vacuum packaging technology in China was developed in the early 1980s, and vacuum inflatable packaging technology began to be used in small quantities in the early 1990s. With the promotion of small packaging and the development of supermarkets, the scope of application has become more widespread. Some will gradually replace hard packaging and the outlook is very promising.