Paper making and fiber liberation – Processes and products – Running or indefinite length work forming and/or treating...
Patent
1991-12-02
1993-07-06
Hastings, Karen M.
Paper making and fiber liberation
Processes and products
Running or indefinite length work forming and/or treating...
162207, 162290, 162301, 162307, D21F 100
Patent
active
052250423
ABSTRACT:
A method and apparatus for improved dewatering of a papermaking stock in a web forming section of a papermaking machine including directing a stock jet stream into the head end of a run between opposed looped forming wires traveling in a substantially parallel forming run passing over a curved vacuum forming box and thereafter passing over one or more pressure locations with a pressure dome on one side and a water collecting chamber at the other side of the wires with the pressure dome in one form divided into compartments each applying an increasing pressure to the wire and stock between the wires with the air pressure being heated such as by being delivered from the dryer section and the wires separated slightly following the pressure location with a last smaller pressure compartment transferring the web to one of the wires and the wire carrying the web thereafter turning over a couch roll and the other wire carried over a turning roll.
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Eaton Daniel J.
Kanitz Roger A.
Beloit Technologies Inc.
Campbell Raymond W.
Hastings Karen M.
Mathews Gerald A.
Veneman Dirk J.
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