Contactless web support guide

摘要

A contactless support guide for a web of material is described. The guide comprises a web support face, a pressurized air supply manifold, and a plenum chamber positioned between the manifold and the support face. The support face is provided with a plurality of pockets, each pocket having an air inlet aperture leading to the plenum chamber. Means are provided for increasing the air pressure at the longitudinal edges of the support face at which the web enters and exits.