Installation for producing a paper web

Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...

Reexamination Certificate

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C162S351000, C162S263000, C162S374000, C162S289000, C162S199000

Reexamination Certificate



A system for making a paper web has at least one endless wire which is moved over load bearing and guide rolls. A pulp supply apparatus applies pulp to the wire. Suction devices and ceramic scrapers are arranged along the wire. There may also be present devices for the application, controlled by valves, of a coolant, in particular water, to the wire and the scrapers. At least some of the scrapers are constructed with at least one temperature sensor, whose output is connected to a display device or to a control unit.

patent: 4055459 (1977-10-01), Best
patent: 6290816 (2001-09-01), Graf
patent: 6444094 (2002-09-01), Rulis et al.


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