1. Vacuum sealers with external suction or beam vacuum sealers
With these, usually compact, appliances, the filled structured bags are clamped by closing the lid. Depending on the external vacuum sealer, approx. 90 - 95 % of the air is then extracted from the vacuum bags. Maintenance-free diaphragm pumps are usually installed here. Once the air has been extracted, the bag is sealed manually or automatically, depending on the appliance. The application ranges from household to direct marketing
2. Chamber vacuum packaging machines
The filled smooth vacuum bags are placed in a chamber. After closing the lid, all the air is pumped out of the hermetically sealed chamber (evacuated). Professional chamber vacuum sealers suck up to 99.5% of the air out of the chamber and the bag! The bag is then sealed fully automatically and the chamber is ventilated again so that it can be opened. Since, unlike bar vacuum sealers, the pressure in the bag and the chamber is the same, liquids can also be vacuum sealed. These devices are equipped with high-quality rotary vane pumps, which require oil as a lubricating, cooling and sealing medium. Although these pumps require regular maintenance (oil change) depending on use, they are significantly more powerful than vacuum sealers with external suction. Chamber vacuum sealers are suitable for continuous operation and a very high cycle rate and are mainly used in direct marketing, butcher's stores and restaurants.
Important!!!
Different vacuum bags are required for the two different types of vacuum sealers!
Ribbed or structured (goffered) vacuum bags
These bags are essential for appliances with external extraction. The internal honeycomb structure enables better air extraction.
Sealed edge bags or smooth vacuum bags
These bags are required for chamber vacuum sealers!