Paper making and fiber liberation – Processes and products – Running or indefinite length work forming and/or treating...
Patent
1998-03-20
2000-02-29
Hastings, Karen M.
Paper making and fiber liberation
Processes and products
Running or indefinite length work forming and/or treating...
162205, 162210, 162301, 1623602, D21F 100
Patent
active
060304995
ABSTRACT:
The invention relates to an apparatus in a paper or board machine for dewatering the web prior to its passage to a press section. The dewatering is effected by a pair of rolls, which is located at the end of a wire section upstream of a pick-up suction roll or a similar transfer device. An additional wire is brought in contact with a side of the web opposite that of the wire of the wire section and it is passed together with the wire of the wire section and the web through the pair of rolls. One of the rolls is an open-surfaced roll for receiving water from the web over its area of contact with the path of travel formed by the wires and the web. The other roll of the pair of rolls is a smooth-surfaced roll and is in contact within the area of contact with the path of travel formed by the wires and the web on the opposite side. After passing through the pair of rolls, the web supported by the wire of the wire section and the additional wire is guided to the pick-up suction roll or the like, where the web is transferred to the additional wire and is thereafter carried on the additional wire to the press section.
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Holle "Siebbespannung fur dis Pressenpartie-VACOFLEX" Zellcheming, Apr., 1989.
Hastings Karen M.
Valmet Corporation
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