Paper making and fiber liberation – Processes and products – Running or indefinite length work forming and/or treating...
Reexamination Certificate
2011-04-05
2011-04-05
Halpern, Mark (Department: 1741)
Paper making and fiber liberation
Processes and products
Running or indefinite length work forming and/or treating...
C162S135000, C162S265000
Reexamination Certificate
active
07918966
ABSTRACT:
The paper web is passed on the production line between at least one pair of rollers, of which one is of soft material driven at greater speed, the hard material roller presenting a base roughness RA of less than 5 and along its entire lateral surface having incisions that are precisely spaced.
REFERENCES:
patent: 3290209 (1966-12-01), Ihrman
patent: 6024832 (2000-02-01), Trani et al.
patent: 1 466 952 (2004-10-01), None
patent: WO 97/27364 (1997-07-01), None
patent: WO 2004/029361 (2004-04-01), None
WO 2004/029361, Date: Aug. 2004, translated copy.
Cariolaro Federico
Sterner Marion
Trani Giorgio
Cartiere Cariolaro S.p.A.
Halpern Mark
Welsh Flaxman & Gitler LLC
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