High velocity web floating air bar having a recessed coanda plate

Abstract From the Canadian patent

Abstract of the Disclosure, An air bar for floating a running web and having two spaced apart air nozzles through which pressurized air is directed against the web to form a supporting air cushion for the web. The nozzles are elongated slots extending transversely of the web and which are positioned at each edge of an intervening plate that also is located transversely of and closely adjacent the running web. The plate has curved edges, one located adjacent each of the slots whereby the air issuing from the slots tends to follow the curvature of the curved edges, thereby tending to direct the two issuing jets of air from the slots towards one another. The plate commonly, referred to as a …