Voith Patent Gmbh

Antje Berendes

Alexander Etschmaier

Norbert Gamsjäger

Franz Grohmann

Norbert Gamsjaeger

Johan Einarsson

Wolfgang Ecke

Hubert Bischof

Michael Wokurek

Wolfgang Peter Mayr

Gamsjäger Norbert

Manfred Rothhardt

Manfred Rothardt

The invention relates to a doctor blade for the surface treatment of fibrous nonwoven webs, including a main body and a coating arranged on the surface of the main body, wherein the coating covers at least the part of the surface of the main body on which the doctor blade is provided for contact with the fibrous nonwoven web, and wherein the porosity of the coating is less on the first surface adjoining the main body than on the surface arranged opposite thereof.

Blade coating

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

An industrial roll is provided, comprising a transverse force transducing fiber Bragg sensor that is embedded in the roll cover and/or located in-between the roll cover and the roll core of the industrial roll. The transverse force transducing fiber Bragg sensor comprises a fiber optical waveguide having a fiber core and a fiber cladding, and a stud element being nonpositively joined to a partial area of the circumferential surface of the fiber optical waveguide. The fiber optical waveguide comprises a Bragg grating located in the fiber core, whereby the dimension of the partial area in the longitudinal direction of the fiber is longer than a grating spacing of the Bragg grating. The partial area is located at a section of the fiber optical waveguide housing the Bragg grating, and at least a first component of the stud element is formed from a first material having a Young's modulus of less than 10 kN/mm.

Industrial roll with optical roll cover sensor system

A blade for doctoring a moving surface or for sizing or creping a fibrous material web produced or finished in a web machine, for example in a paper, board or tissue machine, includes at least one fiber optic waveguide arranged on a surface of the blade or embedded in the material of the blade. The at least one fiber optic waveguide includes a fiber core and a fiber cladding. The at least one fiber optic waveguide further includes at least one fiber Bragg grating.

Doctor blade with sensing system

Growing community of inventors

Bergatreute, Germany

Antje Berendes