Extended nip press belt guide and method

Details Extended nip press belt guide and method Extended nip press belt guide and method

1988-02-19

1988-12-13

Lacey, David L.

Paper making and fiber liberation

Processes and products

Conditioning, preparing or repairing of apparatus

162252, 162272, 162358, 100154, 198806, 474101, D21F 300

Patent

active

047909080

ABSTRACT:
An extended nip press has a looped belt mounted over a shoe having a concave surface which presses the belt against a mating surface on a roll to provide an extended nip. The shoe has a support which is movable in a skewing sense relative to the longitudinal axis of the roll. Lateral movement of the belt is monitored. When it has moved beyond predetermined limits in either direction, the shoe is skewed to alter the frictional forces on the belt as it passes over the shoe's surface. This controls the position of the belt and keeps it centered in the nip.

REFERENCES:
patent: 2635475 (1953-04-01), Hornbostel
patent: 2869866 (1959-01-01), Lorig
patent: 3750920 (1973-08-01), Fountain et al.
patent: 3775241 (1973-11-01), Justus et al.
patent: 4173904 (1979-11-01), Repetto
patent: 4272317 (1981-06-01), Roerig
patent: 4629061 (1986-12-01), Crandall
patent: 4705602 (1987-11-01), Dahl
patent: 4713147 (1987-12-01), Saarinen

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