Andritz Ag

Andritz-patentverwaltungs-gesellschaft M.b.h.

Andritz-patentvenwaltungs-gesellschaft M.b.h.

Harald Weigant

Wilhelm Mausser

Walter Writzl

Rudolf Greimel

Manfred Schmid

David V Lange

Andreas Anzel

Erwin Walcher

Helmut Eichler

Harald Michels

Michael Janosch

Simone Koidl

Gernot Zeletinger

Kurt Mitterböck

Dave Lange

The subject of this invention is a transfer suction roll () for transferring a material web with a perforated suction roll shell () that is pivot-mounted in roller bearings () and a suction box () mounted inside the transfer suction roll (). The suction box () defines a suction zone () on the perforated suction roll shell () by means of seals (). According to the invention, a suction hood () is arranged on the outer circumference of the transfer suction roll () through which air can be sucked out of the suction box () through the perforated suction roll shell ().

Transfer suction roll for transfer of 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 ().

Device for treating a pulp web in an extended nip pressing unit

The invention relates to a device for stabilizing a paper web, particularly a tissue web, with at least one (web) stabilizer () after a drying cylinder (), where the stabilizer () is located directly at the cylinder () under the paper web (). It is mainly characterized by the angle of incidence &#x3b1; of the stabilizer () at the drying cylinder () being adjustable.

Device for stabilizing a paper web

A device for drying a paper web includes a structured fabric for carrying the paper web rests during the drying process. A single roll unit includes a suction roll for dewatering the paper web and a press roll for securing the paper web to the structured fabric. The paper web is dried by hot air while on a drying drum.

Device for drying a paper web

The invention relates to a device for detaching a paper webfrom a wire, where the pulp suspension is fed in between a wireand a feltby a headbox, the wireand feltare guided together over a forming roll, and are separated from one another after the webhas formed. It is especially characterised by the separation pointof wireand feltbeing located at a distance from the forming roll

Device for detaching a paper web from a wire

The invention relates to a process for measuring and controlling the nip pressure in the press of a paper machine, particularly in a shoe press, across and/or along the web running direction. It is largely characterized by the hydraulic, static pressure being measured at reference points through measurement boreholes in the press nip and adjusted continuously. In addition, the invention relates to a device for carrying out the process.

Process and device for measuring and controlling the nip pressure in the press of a paper machine

A device for feeding a pulp suspension to a tissue machine includes a headbox having top and bottom lips defining a slice gap forming a free flow jet of the pulp suspension. The device also includes at least one eccentric shaft for setting the slice gap between a minimum and a maximum height. Each eccentric shaft is supported at several points over the machine width and is driven directly by a gear motor.

Device for feeding a pulp suspension with eccentric shaft adjustment

The invention refers to a device for feeding a pulp suspension to a dewatering installation, particularly for a tissue machine. It is mainly characterized by one or several one-piece, wedge-shaped, steel lamella tip(s) being provided to separate the individual sectors in a two-layer or multi-layer headbox.

Device for feeding a pulp suspension to a dewatering installation

The invention refers to a headbox device for feeding a pulp suspension to a dewatering installation, particularly for a tissue machine. It is mainly characterized by an eccentric shaft being provided to set the slice gap between a minimum and a maximum height. It also includes a wedge shaped steel lamella tip attached under pre-stress by a tie/rod to a headbox partition.

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Graz, Austria

Harald Weigant