Web dryer with graded apertures

Details Web dryer with graded apertures Web dryer with graded apertures

F - Mech Eng,Light,Heat,Weapons

26

B

34/39

F26B 13/00 (2006.01) D21F 5/18 (2006.01) F26B 13/20 (2006.01)

Patent

CA 1044887

ABSTRACT OF THE DISCLOSURE Method and apparatus for drying a moving web of paper or the like including one or more impingement boxes which are disposed in spaced relation to the moving web, means for introducing pressurized air into each of the impingement boxes, each of the boxes including an apertured plate spaced from the web being dried, the plate having relatively small diameter holes centrally thereof and relatively larger diameter holes along the leading and trailing edges to minimize cross flow interference with exhaust spaces being provided along the leading and trailing edges for directing spent drying air into an exhaust plenum.

207937

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