Press section apparatus with deflection compensated granite roll

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

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Details

291162, 29130, 29132, 162361, D21F 300

Patent

active

049751530

ABSTRACT:
A press section apparatus defining a press nip is disclosed for pressing a web of paper. The apparatus includes a frame and a press member secured to the frame. A backing roll is rotatably secured to the frame with the backing roll cooperating with the press member for defining therebetween the press nip. The backing roll also includes a shaft which has a first and a second end. The ends of the shaft are secured to the frame and a shell defines a granite outer surface with the shell being disposed substantially coaxially relative to and around the shaft. The shell is rotatable relative to the shaft and a deflection compensating device compensates for relative deflection between the shell and the press member during passage of the web through the press nip.

REFERENCES:
patent: 837029 (1906-11-01), Bittner
patent: 3737962 (1973-06-01), Hill
patent: 4047273 (1977-09-01), Biondetti
patent: 4316769 (1982-02-01), Dahl
patent: 4518460 (1985-05-01), Hauser et al.
patent: 4642862 (1987-02-01), Muhle et al.
patent: 4748736 (1988-06-01), Miihkinen

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