Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...
Reexamination Certificate
2007-10-26
2011-12-13
Halpern, Mark (Department: 1741)
Paper making and fiber liberation
Apparatus
Running or indefinite length product forming and/or treating...
Reexamination Certificate
active
08075738
ABSTRACT:
An apparatus for transferring a wet paper web from a press nip to a drying cylinder (52) of a papermaking machine, and for structuring the web, comprises an impermeable transfer belt (35) having a web-contacting surface, the wet paper web passing through the press nip enclosed between a press felt (33) and the transfer belt, and a permeable structuring fabric (37) for transfer of the web onto the drying cylinder, the structuring fabric having a structured surface and being arranged in a loop within which a suction transfer device (38) is disposed, said suction transfer device having a suction zone (41). According to the invention the web-contacting surface of the belt has a non-uniform distribution of microscopic-scale depressions, and that the suction zone includes a transfer point (40) spaced a distance D from the press nip along which the belt runs, the belt being arranged to bring the web into contact with the structuring fabric in the suction zone for a length L, such that suction is exerted on the paper web to transfer the paper web from the belt onto the structuring fabric. at the transfer point.
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The International Search Report on Patentability for PCT Application No. PCT/SE2007/000939; Filed Oct. 26, 2007; Date of Completion Jan. 28, 2008; Date of Mailing Jan. 29, 2008.
The International Preliminary Report on Patentability for PCT Application No. PCT/SE2007/000939; Filed Oct. 26, 2007; Date of Submission of Demand May 26, 2008; Date of Completion of Report Jan. 26, 2009.
Beuther Paul Douglas
Hada Frank Stephen
Holz Jeffrey Dean
Ivarsson Hans
Klerelid Ingvar Berndt Erik
Alston & Bird LLP
Halpern Mark
Metso Paper Karlstad AB
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