Roll for paper-making machine

Details Roll for paper-making machine Roll for paper-making machine

1995-02-28

1997-05-27

Lamb, Brenda A.

Paper making and fiber liberation

Apparatus

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

34115, 34116, D21F 310

Patent

active

056328621

ABSTRACT:
In a roll for a paper-making machine, a torque which is needed for rotating the roll is reduced and the drive power and a running cost are reduced. A hollow perforated roll in the paper-making machine is rotatably mounted on a bearing housing via a bearing. A cylindrical stationary center shaft extends in an axial direction through a center of the roll and has a perforated circumferential surface. At least two fins extending in an axial direction are mounted on an outer circumferential surface of the center shaft within the hollow interior of the roll, their outer edges being spaced from the inner circumferential surface of the perforated roll. Radially extending disc-like fins are also mounted on the outer circumferential surface of the center shaft perpendicular to an axis of the center shaft with their outer circumferential edges being spaced with a slight gap from the inner circumferential surface of the perforated roll. At least two of the axially extending fins are circumferentially located in the vicinity of contact points with web members wound around the perforated roll.

REFERENCES:
patent: 4247990 (1981-02-01), Ohs
patent: 4364185 (1982-12-01), Dussourd et al.
patent: 4693784 (1987-09-01), Aula et al.
patent: 4905379 (1990-03-01), Wedel
patent: 4980979 (1991-01-01), Wedel
patent: 5015336 (1991-05-01), Roerig et al.
patent: 5024729 (1991-06-01), Kuhasalo et al.
patent: 5347720 (1994-09-01), Pinter et al.

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