A bar vacuum sealer is a vacuum sealer (e.g. the VAC 485) in which the bag is inserted into a so-called welding or vacuum bar.
The air is extracted from the bag via this beam and the bag is then welded directly.
They are suitable for structured vacuum bags, very powerful and ideal for regular and rapid vacuuming of larger quantities.
The air extraction and weld seam are carried out in a single step.