Patent ID: 6094838
Filing Date: 2000-08-01
Classification: D21F

Abstract:
A method of drying a travelling paper web in a dryer section of a paper machine having a plurality of drying cylinders arranged in spaced, parallel relationship with at least one return roll below the center line of each pair of drying cylinders, comprising the steps of:a) passing said web over and against the surface of said drying cylinders to dry one side of the web;b) simultaneously subjecting the other, top side of the web to a plurality of jets of hot drying air from a high velocity hood mounted adjacent the top surfaces of said drying cylinders thereby to substantially dry both sides of said web evenly;c) providing cross-machine direction profiling to said hot drying air from damper means in said hood;d) providing said hot drying air with machine-direction, moisture variation correction from means in said hood; ande) positioning selected nozzle boxes in said hood adjacent the inlet and outlet thereof to direct jets at an angle to said paper web to separate a boundary layer of air attached to a fabric travelling with said web.