Method and machine for drying a material web with guide rollers

Details Method and machine for drying a material web with guide rollers Method and machine for drying a material web with guide rollers

1997-04-16

1998-11-03

Bennett, Henry A.

Drying and gas or vapor contact with solids

Process

Gas or vapor contact with treated material

34115, 34122, 34456, 34458, D21F 500

Patent

active

058291644

ABSTRACT:
A machine for producing a material web, e.g., a paper or cardboard web, with a dryer section including at least one dryer group having a plurality of dryer cylinders and a plurality of web guide rolls, e.g., suction web guide rolls. At least one web guide roll, and preferably all, may be associated with an external suction box. Further, a jacket of the at least one web guide roll may include a plurality of through openings and at least one groove formed in an outer surface of the jacket. A predetermined number, and preferably all, of the through openings may be coupled with a bottom portion of the at least one groove to enable the external suction box to suction the at least one web guide roll.

REFERENCES:
patent: 5022163 (1991-06-01), Ilvespaa et al.
patent: 5135614 (1992-08-01), Aula et al.
patent: 5241760 (1993-09-01), Wedel
patent: 5465502 (1995-11-01), Holik et al.
Copy of a European Search Report dated Feb. 25, 1998.

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