Suction roll sealing strip

Details Suction roll sealing strip Suction roll sealing strip

1997-05-15

1999-03-02

Chin, Peter

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

162371, 277407, 277944, 277946, D21F 310

Patent

active

058765662

ABSTRACT:
A composite is provided for forming a sealing strip for use in a suction roll of a papermaking machine that has extended usability and wear. The composite is a blend of a nitrile rubber, graphite, carbon black, and polytetrafluoroethylene, optionally with a phenolic resin. The sealing strip has polytetrafluoroethylene evenly distributed over the contact surface and when installed into a suction roll provides a reduced frictional surface.

REFERENCES:
patent: 2578551 (1951-12-01), Hornbostel
patent: 4714523 (1987-12-01), Sawyer, Jr. et al.
patent: 4915787 (1990-04-01), Branyon et al.
patent: 5515619 (1996-05-01), Kahl et al.
patent: 5580424 (1996-12-01), Snellman

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