Andritz Ag

Andritz Kusters Gmbh

Andreas Anzel

Wilhelm Mausser

Thomas Thoroee Scherb

David V Lange

Klaus Gissing

Robert Meitner

Harald Weigant

Paul Richards

Wolfgang Plienegger

Mario Wiltsche

Dave Lange

David Lange

A method for treating a pulp web in a paper or tissue machine with an extended-nip press unit. This extended-nip press unit includes a shoe press roll with a revolving press belt and a backing roll, where the pulp web is dewatered in the extended press nip between the backing roll and the press belt and where the pulp web is carried on the revolving press belt of the press roll after the extended press nip to a transfer fabric that receives the pulp web. The transfer fabric is guided over a stationary transfer device in the transfer area. A corresponding device for treating the pulp web.

Method and device for treating a fibrous material web in a long nip pressing unit

A method for producing a fibrous material web, particularly for producing a tissue or hygienic paper web, in which a fibrous suspension is dewatered in a crescent former to obtain a fibrous material web, and dried on a Yankee. After the crescent former, the fibrous material web is guided along with the forming screen and felt over a suction roller downstream of the forming roller. A device for carrying out the method for producing a fibrous material web.

Method for producing a fibrous material web

Disclosed is a device for forming an extended nip between a counter roll and a shoe roll for machining a material web, wherein the shoe roll has a support and a flexible roll shell, which can rotate around the support () and which rests in the region of the extended nip upon a head surface of a press shoe guided on the support, and the press shoe displaceably rests on the support in order to generate a press pressure via a pressure chamber to which fluid can be applied, the pressure chamber is disposed as a pressure pad, on which the press shoe rests surficially on the rear side, wherein the pressure pad is inserted into a groove-like chamber, wherein the press shoe has a stamp-like section on the rear side, which stamp-like section descends into an invaginable pressure pad in order to perform reciprocating movements, and the pressure pad is guidedly supported on the groove-like chamber along a pressure pad lateral wall that forms a roll wall.

Device for forming an extended nip

A method for producing a fibrous pulp web, in which a fibrous pulp suspension is dewatered in a Twin Wire Former to form a fibrous pulp web which is dried with a TAD dryer. A pre-dewatering device with a hood and suction roll is provided after the Twin Wire Former and before the TAD dryer. The fibrous pulp web is guided through the pre-dewatering device between exactly two machine cloths. The machine cloth between suction roll and the web is a porous felt, and the machine cloth between web and hood is a structured wire. A volume flux of hot drying fluid greater than 100 m/(m&#xb7;min), preferably greater than 250 m/(m&#xb7;min,) is drawn through the fibrous pulp web into the suction roll.

Process for production of a fibrous pulp web

This invention relates to a dewatering device for dewatering a material web (), particularly a tissue web, in a paper machine where the dewatering device is placed after a forming unit () and before a thermal drying device (). The dewatering device consists of a press roll () with a press belt () running round it. Here, the material web () is carried into the dewatering device either on a water-absorbing belt () or on a wire (). The water-absorbing belt () is placed in the dewatering device between the material web () and the press belt (). This invention also relates to a dewatering process performed with the dewatering device.

Device for dewatering a material web

A process and apparatus for treating a pulp web () in a paper or board machine in a pressing unit () with one press roll () that has a rotating press shell () and one opposing roll (), where the pulp web () is dewatered in an extended press nip () between the opposing roll () and the pressing shell () of the press roll (). The pulp web () is carried on the rotating pressing shell () of the press roll () to a transfer zone (), where the pulp web () is passed from the pressing shell () onto a transfer element () after leaving the extended press nip ().

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Graz, Austria

Andreas Anzel