Vacuum, the term translated from the Latin vacuo, its meaning is nothing. In fact, the vacuum should be understood as a thinner gas space. In the specified space, below the atmospheric pressure of a gas state collectively referred to as vacuum. The degree of vacuum in vacuum is called the degree of vacuum, and is usually expressed as a pressure value. The vacuum package is not actually completely vacuumed, and the degree of vacuum inside the food container packaged by the vacuum packaging technique is usually in the range of 600-1333 Pa. Therefore, turn the vacuum packaging known as vacuum packaging or exhaust packaging.
Vacuum packaging technology originated in the 1940s. In 1950, polyester, polyethylene plastic film successfully used for vacuum packaging, since then, vacuum packaging will be rapid development.
Food vacuum packaging machine for sausage, meat products, biscuits and other food packaging vacuum. After packaging the food can prevent mildew, durability, preservation and extend the product shelf life, just press the vacuum cover can be automatically completed vacuum, sealing.