It’s assembly in one pass forms fold at the edges of rectangular or square channels and connects them to the castle. In the moment passage through the channel the machine in the still open seam can apply a special sealant for sealing products, as a result of which we get the airway rectangular section with dense hermetic seam.

The spiral duct machine body is a stable welded structure, bearing parts of which are made of sheet metal, which further strengthens the rigidity.

Duct Zipper Machine-Main Technical Parameters