Voith Patent Gmbh

Michael Wokurek

Franz Grohmann

Robert Eberhardt

Uwe Matuschczyk

Matthias Schmitt

Alexander Etschmaier

Johan Einarsson

Martin Breineder

Antje Berendes

Norbert Gamsjäger

Hermann Reichert

Siegfried Graser

Delphine Delmas

Ting Liu

Gamsjäger Norbert

Ralf Moser

Stefan Probst-Schendzielorz

Wesley Brooks

The invention relates to a press jacket comprising at least one polymer layer, where the polymer layer comprises, or has been produced from, a polyurethane, where the polyurethane has been formed from a prepolymer and a crosslinking agent, and the prepolymer is a reaction product of phenylene 1,4-diisocyanate and of a polyol, where the crosslinking agent comprises the following components:

Press jacket and method for the production thereof

A method produces or machines a roller which is suitable to be used in a machine for producing or processing a fibrous web. The roller contains a roller core and at least one functional layer. The method is characterized in that the method includes the application of a functional layer. The application of the functional layer is performed by applying a coating substrate to the surface of a roller core. The application takes place simultaneously over at least half the roller width, preferably over 75% of the roller width, particularly preferably over the entire roller width. The entire applied coating substrate or parts thereof are hardened, forming a solidified structure.

Method for producing or machining a roller, roller and functional layer of a roller

A combination of a press felt with a pressure and/or suction roll covering for a papermaking machine, including a porous press felt with a carrier structure. The pressure or suction roll covering having a circumferential groove surface structure having a groove width in the range of 0.5 mm to 1.5 mm, a distance between grooves in the range of 1.5 to 2.5 mm and a groove depth in the range of 1.5 mm to 4 mm. A percentage of an open surface relative to an overall surface of the pressure roll covering is in a range of 20% to 50%. The suction roll covering additionally having an arrangement of holes with a plurality of suction holes completely penetrating through the suction roll covering, whereby a percentage of an open surface in relation to an overall surface of the suction roll covering is in a range of 30% to 50%.

Combination of a press felt with a pressure roll covering and/or suction roll covering for a paper machine

Growing community of inventors

Vienna, Austria

Michael Wokurek