Patent ID: 6317999
Filing Date: 2001-11-20
Classification: D21F

Abstract:
A sealing nozzle assembly disposed in the drying section of a paper machine in which a paper web is supported by a supporting fabric and guided over a cylinder so that the web is between the supporting fabric and the cylinder, the supporting fabric comprising a first side opposite the cylinder, and a second side adjacent the cylinder, said assembly comprising:a blow box, having a wall, mounted on said first side of said supporting fabric and spaced a distance D from said supporting fabric so as to define a passage between said blow box and said supporting fabric, said passage comprising a negative pressure region having a border with a region outside said negative pressure region;a sealing nozzle mounted in said wall of said blow box and facing said passage, and spaced a distance d from said supporting fabric; andsaid sealing nozzle comprising: a pivotal sealing member mounted at said border, and a transverse support element, said sealing member pivotal about said transverse support element; and a separate nozzle part having at least one nozzle opening and disposed in said negative pressure region in front of said pivotal sealing member, said separate nozzle part positioned so that said at least one nozzle opening blows air along a surface of said sealing member from said negative pressure region to said region outside said negative pressure region.