Calender apparatus with a separating mechanism

Details Calender apparatus with a separating mechanism Calender apparatus with a separating mechanism

1999-09-03

2000-12-12

Vo, Peter

Presses

Automatic or material triggered control

Of roll separation or speed

100153, 100170, 100327, 162206, B30B 1516, D21F 1100

Patent

active

061583359

ABSTRACT:
The invention relates to a method for operating a calender, comprising a cylindrical heated roll and a flexible belt surrounding a stationary support beam which supports at least one actuator which may urge a concave load shoe against the heated roll by means of said flexible belt to form an extended and heated nip through which a fiber web passes to be calendered and a separating mechanism for having at least one of the rolls movable into and away from the nip characterized in that said flexible belt is a flexible tubular jacket which forms a part of an enclosed shoe roll such that the ends of said jacket have end walls mounted thereto, which end walls are rotatably mounted in relation to said support beam, and in that at least one of said end walls is driven by means of a drive arrangement which drive arrangement may be activated to drive the end walls in and thereby also the jacket independently of its position in relation to the fiber web or the heated roll.

REFERENCES:
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patent: 4555305 (1985-11-01), Steiner et al.
patent: 4917768 (1990-04-01), Illmarinen
patent: 5011578 (1991-04-01), Lange et al.
patent: 5043046 (1991-08-01), Laapotti
patent: 5084137 (1992-01-01), Ilmarinen et al.
patent: 5098523 (1992-03-01), Ilmarinen et al.
patent: 5141601 (1992-08-01), Karlsson et al.
patent: 5163364 (1992-11-01), Bubik et al.
patent: 5164047 (1992-11-01), Koski
patent: 5556514 (1996-09-01), Didier
patent: 5582689 (1996-12-01), Van Haag et al.
patent: 5816146 (1998-10-01), Wagner et al.

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