Blow-Off (Air Knife) Tunnel

Blow Off (Air Knife) Tunnel is typically used on packaging lines to blow water droplets off the exterior surfaces of cans, bottles, and other container types.  They are commonly positioned at some point between the Filler and Cartoner or Case Packing machines, depending on the layout and other equipment on the line.  The main reasons moisture is removed from container surfaces are to improve the performance of labeling and coding and to reduce the negative impact moisture can have on carton/case materials.

The Bevco Blow Off Tunnel is a stand-alone enclosure situated around a separate single-file conveyor that runs through the Blow-Off Tunnel.  The Blow Off Tunnel is able to remove moisture from containers using three stainless steel air knives.  The first air knife is positioned above the container and blows vertically downward to remove moisture from the top of the container and to begin to force moisture down the sides of the container.  The additional two air knives are positioned on each side of the conveyor after the first air knife, and they blow air horizontally to remove moisture from the sides of the container.  The air knives are connected to 2" flexible hoses and the blower is mounted on top of the tunnel.