Device for guiding a leader of a web in a paper machine

Paper making and fiber liberation – Apparatus – Running or indefinite length product forming and/or treating...

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Details

162193, 1623602, 162286, 1623603, D21F 302

Patent

active

055037160

ABSTRACT:
The invention relates to a device in a paper machine for guiding a web and in particular in guiding a leader of the web. The device operates in a paper machine in the area between a center roll of the press section and a separate press nip in the press section. The separate press nip is formed between a smooth-faced upper roll and a hollow-faced lower roll. Around this lower roll, a lower felt of the separate press is placed and runs from a suction-transfer roll placed at the proximity of the center roll as a straight run into the separate press nip. At the initial end of the straight run of the felt of the separate press nip, in connection with the guide roll, air-transfer devices are arranged, by whose means a reduced pressure is produced at least across the width of the leader in connection with a closing inlet nip between the felt and the leader and/or in connection with an opening outlet nip defined between the guide roll and the straight run of the felt.

REFERENCES:
patent: 2714342 (1955-08-01), Beachler
patent: 4526655 (1985-07-01), Karvinen et al.
patent: 4543160 (1985-09-01), Kerttula et al
patent: 4561939 (1985-12-01), Justus
patent: 4608125 (1986-08-01), Autio
patent: 4648942 (1987-03-01), Wanke et al.
patent: 4692215 (1987-09-01), Kerttula
patent: 4704192 (1987-11-01), Cronin
patent: 4726502 (1988-02-01), Cryderman
patent: 4768294 (1988-09-01), Weideburg
patent: 4874470 (1989-10-01), Skaugen
patent: 4893741 (1990-01-01), Heinzmann
patent: 4923567 (1990-05-01), Liedes et al.
patent: 4970805 (1990-11-01), Wedel
patent: 5120400 (1992-06-01), Laapotti
patent: 5232555 (1993-08-01), Daunais et al.
patent: 5240563 (1993-08-01), Karvinen et al.
D. McDonald et al. "A New Web Transfer System For Closing The Draw Between Last Press And Dryer Section" CPPA Annual Meeting 1990.

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