Eduard Küsters Maschinenfabrik Gmbh & Co. Kg

Andritz Kusters Gmbh

Eduard K&uuml;sters Maschinenfabrik Gmbh & Co. Kg

Other

Jagenberg Aktiengesellschaft

Eduard K&uuml;sters Maschinefabrik Gmbh & Co. Kg

Edward Kuster Maschinenfabrik Gmbh Co. Kg

Kusters Maschinenfabrik Gmbh & Co. Kg

Bernhard Brendel

Peter Svenka

Klaus Kubik

Gunter Schrors

Peter Hader

Helmut Anstotz

Eduard Davydenko

Werner Hartmann

Karl-Heinz Kusters

Bernhard Funger

Wolfgang Mark

Stefan Krebs

Werner Borkenhagen

Robert Meitner

Bernard Funger

Hans Bors

Helmut Beckstein

J&ouml;rg Prey

Helmut Kox

Hans J Preuhs

Ralf Doerkes

Franz Petschauer

Winfried Schlutzkus

Wilhelm Mausser

Calender () for calendering a paper or board web (), having at least one nip (), which is formed between a heatable roll () and a mating element (), a device () for producing a predetermined pressure in the nip (), and a web treatment device () arranged upstream of the nip () and having two contact surfaces () forming a treatment nip (), one of which is a circulating contact surface () which is formed by a belt () circulating on guide rolls (), the other contact surface () is formed by the circulating surface of the heatable roll (), and the treatment nip () extends along an angle () of the wrap of the heatable roll (), wherein, in order to increase the thermal efficiency of the transfer of heat, the circulating belt () uses a resilient surface to press the paper or board web () onto the heatable roll (), and the guide rolls () control sectional forces of the circulating belt () in the treatment nip ().

Calender for treating a product web

A calender () for calendering a paper web (), in particular made from paper suitable for gravure printing, having at least one roll stack which in each case has an upper and a lower end roll () and intermediate rolls (), one of the two end rolls () delimits a first working nip () of the roll stack depending on the guidance of the paper web (), and the rolls () are hard rolls () and soft rolls () in order to form loadable working nips in the form of soft nips, the end roll () which delimits the first working nip () being a hard, heated roll, the diameter of which is greater than that of a hard, heated intermediate roll () and the outer wall () of which forms one of two contact faces () of a web treatment nip () which is arranged upstream of the first working nip (), and the other contact face () being formed by a belt () which circulates on guide rolls ().

Calender for calendering a paper web

The invention concerns a calender which comprises a vertical stack of interlinked rollers driven individually by regulated electric motors. The regulation process acts on the distribution of the delivered power to the individual rollers such that the forces acting on the rollers in the horizontal direction and measured in the roller bearings are minimized, so enabling slimmer rollers to be used.

Calender

Apparatus for forming an extended nip between a mating roll and a shoe roll for treating a product web, the shoe roll having a stationary carrier and a flexible roll shell which can rotate around the carrier and which, in the region of the extended nip, is supported on a hydrodynamically lubricated running surface of a press shoe guided on the carrier, for which purpose a device for applying lubricant to the inner side of the roll shell is provided, where, in an inlet region, the press shoe has a plurality of holes which are arranged transversely with respect to the machine running direction, are connected to a lubricant supply in order to be fed with lubricant and, for this purpose, end at the running surface, and the holes comprise restrictors whose resistance is designed for a pressure drop of 5 to 15 bar.

Apparatus for forming an extended nip

A calender comprises a vertical stack of interlinked rollers driven individually by regulated electric motors. The regulation process acts on the distribution of the delivered power to the individual rollers such that the forces acting on the rollers in the horizontal direction and measured in the roller bearings are minimized allowing slimmer rollers to be used.

A vertical calender arrangement comprises a controllable-deflection top roll, a controllable-deflection bottom roll and intermediate rolls arranged between top and bottom rolls. The top roll and the bottom roll are each provided with a power drive.

Calender arrangement

The invention relates to an extended-nip roll press for dewatering a fibrous web in a press nip which, on one side, is formed by a rotating mating roll and, on the other side, is formed by an extended-nip press roll, whose roll centers lie in a stack plane, and the extended-nip press roll has a stationary support and a flexible roll cover that can rotate about the support, the cover in the region of the press nip being supported on the support on a sliding surface which is formed on an upper part, defining an entry and exit, of a press shoe that can be displaced with respect to the support in a loading direction, it being possible for the press shoe to be displaced radially along a loading plane which intersects the stack plane at the center of the mating roll and at an acute angle to the exit direction.

Extended-nip roll press for dewatering a fibrous web

Extended-nip roll press for dewatering a material web comprises a rotating mating roll and an extended-nip press roll. The extended-nip press roll has a stationary support and a flexible roll cover which rotates about the support. A press shoe is arranged on the support, and the roll cover has end sections which are clamped firmly on rotatable end walls on the support. End wall clamping rings respond to a first actuating device and clamp a resilient spreader ring radially against an outer ring that can be connected firmly to the end walls. A sealing ring is arranged on each end wall adjacent the clamping ring and can be deformed radially against the outer ring by means of a second actuating device.

A calender for treating a paper web, having at least one roll stack capable of being loaded from the end and in each case comprising a top and bottom end roll and a plurality of intermediate rolls, which are jointly arranged in a roll stack plane, and the rolls including hard and soft rolls in order to form operating nips in the form of soft nips, wherein each soft roll which forms an intermediate roll has a greater diameter than a soft roll which forms an end roll.

A calender arrangement includes end rolls that are in the form of deflection controlled rolls having an internal stroke. One of the end rolls comprises at least one stop element that is in the form of a hydraulic positioned hydrostatic element which, together with the internal wall of the roll sleeve, defines a gap. When a constant throughput of hydraulic medium is fed in, an equilibrium of forces is produced, at which equilibrium the roll sleeve is positioned. The pressure built up in the process is a measure of the positioning forces. Small departures from the target position are permitted without control intervention.

Calender arrangement and a deflection controlled roll and method of operating them

The invention relates to a calender for treatment of a product web, having at least one roll stack comprising rolls arranged in a calender frame, the ends of which rolls are guided in roll mountings, which can be fastened to the calender frame by means of brackets, and having guiding means associated with the rolls for guiding a product web through nips formed between the individual rolls. For a rapid change-over with respect to the nature and intensity of the treatment of a product web in a calender, the brackets are in the form of modules, which support the rolls and are capable of being fastened individually to the calender frame and which have identical connecting devices for grouping, as desired, on the calender frame.

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Grefrath, Germany

Bernhard Brendel