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Vacuum Evacuation

Vacuum evacuation. The process of creating a negative pressure inside a closed physical space. By extracting ambient air or other gases.

Laboratory vacuum chamber for vacuum evacuation

How does vacuum evacuation work?

One of the most widespread applications of vacuum technology is the evacuation of physical spaces, for example vessels. Ambient air or other gases are extracted until a defined target pressure is reached.

Vacuum evacuation is a highly diverse application. Evacuation chambers are used in a large variety of processes. To conduct manufacturing or testing processes that would be impeded by the presence of ambient air, or by the presence of oxygen.

Typical examples where vacuum evacuation is used are process chambers in the semiconductor industry or space simulation chambers. But also the evacuation of vacuum furnaces or coating chambers.

Busch vacuum technology in vacuum evacuation

The required vacuum level varies according to the application. From low vacuum for clean rooms to high vacuum for silicon wafer coating in semiconductor production. The requirements for a suitable vacuum generator are thus very diverse. Key factors to consider when selecting a vacuum supply include the volume to be evacuated and the required ultimate pressure in the vessel.

With our extensive product portfolio, we cover the entire spectrum of requirements. Offering the perfect solution for all evacuation processes.

Vacuum evacuation in the packaging industry

Vacuum evacuation in the food packaging industry
Vacuum plays an important role in the packaging industry, especially in food packaging. Air is extracted from the packaging by means of vacuum. This ensures the preservation of the quality of the packaged goods as well as a long shelf life.

Together with a foil, a bag or prefabricated tray, the goods to be packaged are placed into the packaging chamber. Which is then evacuated by a vacuum pump. Meaning that the ambient air together with the oxygen in the air are suctioned out. When the desired vacuum level has been achieved, the packaging parts are sealed together. The packaging chamber is now aerated to atmospheric pressure. Thus, the packaging foil is tightly pressed against the packaged good.

When it comes to packaging oxygen-sensitive, perishable food, modified atmospheric packaging is the process of choice. In this case, the chamber is aerated to atmospheric pressure with a protective gas instead of air.

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Vacuum evacuation in practice

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