Paper making and fiber liberation – Processes and products – Lead strip forming and/or guiding
Reissue Patent
2007-05-01
2007-05-01
Fortuna, José A. (Department: 1731)
Paper making and fiber liberation
Processes and products
Lead strip forming and/or guiding
C162S194000, C162S289000, C162S283000, C034S120000, C034S114000, C034S641000, C226S007000, C226S097100
Reissue Patent
active
09550005
ABSTRACT:
To accomplish a web transfer, which in reliability is comparable to the one obtained with a closed draw, in any operating environment, but especially where it is desirable to transfer a fast running tissue web (4) from the drying section of a tissue machine, e.g., a Yankee dryer (2), to a reel-up (3), a web support device (10) extends across the width of the web (4) and along a predetermined run of the web support device has a support surface (11) formed by a series of plate member assemblies (23) having means for creating a flow of air in the direction of the web run. Between the web (4) and the support surface (11) the flow of air forms an air layer (15) of reduced static pressure, so as to stabilize the web (4) against flutter. The predetermined run may extend through a calender (7) and past scanner equipment (8). Pneumatic tail threading capabilities may be included.
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Hagen et al.,Airfoil Web Dryer Performance Characteristics, 1984 Coating Conference, pp. 85-97.
Klerelid, Ingvar,New Dry End Development in Operation: Creping, Coating Control, Reel and Dust Removal, Sep. 16-17, 1993, pp. 87-104.
Örtemo B. Lennart H.
Svanqvist Tord O. S.
Alston & Bird LLP
Fortuna Jos'e A.
Metso Paper Karlstad AB
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