Voith Sulzer Papiermaschinen Gmbh

Voith Sulzer Papiertechnik Patent Gmbh

J. M. Voith Gmbh

Voith Patent Gmbh

Bernhard Kohl

Martin Friedrich Kustermann

R&uuml;diger Kurtz

Michael Trefz

Rudiger Kurtz

Richard Christian Bernert

Harald Hess

Oswald Satzger

Stefan Reich

Ingo Gottwald

Benjamin Mendez-Gallon

Gerhard Kotitschke

Benjamin M&eacute;ndez-Gallon

Manfred Uebersch&auml;r

Hans-J&uuml;rgen Wulz

Franz Kustos

Hans Peter Hoffmann

Karl-Heinz Hannen

Hans-Dieter D&ouml;rflinger

Peter Petermann

Erhard Gruber

Albrecht Meinecke

Hans-Peter Sollinger

Zygmunt Madrzak

Helmut Heinzmann

Christoph Henninger

Manfred Ueberschar

Wilfried Kraft

Joachim Henssler

Hans-Dieter Dorflinger

Anton Plomer

Ingolf Cedra

Rudolf Munch

Martin Tietz

Friedhelm Ruhl

Benjamin Mendez

Christioph Henninger

Ruediger Kurtz

A method of producing paper webs coated on both sides includes the following steps: a) indirectly applying a liquid onto the paper web by passing the web through at least one nip formed by a roll and a counterelement, whereafter the web is dried; b) next, directly applying coating mixture at surplus only on one side of the web, whereafter the surplus coating mixture is removed again by use of a doctor element, the web being dried again thereafter; and c) lastly, directly applying coating mixture at surplus only on the other web side, whereafter the surplus coating mixture is removed by use of a doctor, whereafter the web is dried again. In the indirect application of liquid in the nip, or in the nips, either coating mixture to produce so-called MWC papers or a sizing suspension to produce so-called LWC papers is selectively applied.

Method and apparatus to produce paper webs coated on both sides

An application apparatus is for applying a liquid or pasty medium to a moving base. The moving base is a surface of a material web in a case of direct application and a surface of a transfer element for transferring the medium to the material web in a case of indirect application, the material web being one of paper and cardboard. The application apparatus has an inlet side and an outlet side with respect to a direction of movement of the moving base. The application apparatus includes a carrying beam; an essentially rigid supporting unit provided on the carrying beam; a sealing doctor device positioned at the inlet side of the application apparatus, the sealing doctor device being fixedly attached to the supporting unit; and a metering doctor device positioned at the outlet side of the application apparatus, the metering doctor device being fixedly attached to the supporting unit. The sealing doctor device and the metering doctor device define an application chamber therebetween.

Apparatus for the application of a liquid or pasty medium to a moving fiber web

The invention relates to a method for directly or indirectly applying a liquid or pasty application medium ( ) onto one or both sides of a continuous surface ( ), wherein the application medium ( ) is applied to the surface ( ) in a plurality of single application regions by means of a plurality of single application nozzles ( ) spaced apart from one another side by side and/or in succession in the direction of width (B) and/or longitudinal direction of the surface ( ) and clearly distanced (D) from the surface ( ), the application medium ( ) emerging from each of these nozzles, wherein adjacent single application regions each intersect (U) at least in part in their respective edge regions, causing a layer of application medium to be produced across substantially the entire width (B) of the surface ( ) to be coated. The invention also relates to an apparatus for performing this method.

Method and apparatus for directly or indirectly applying a liquid or pasty application medium to one or both sides of a continuous surface

An apparatus applies a liquid or viscid coating medium onto a moving material web, especially one made of paper or cardboard. A coating mechanism first applies the coating medium onto an applicator element or an applicator roll, which subsequently transfers the coating medium at a coating location onto the material web in the form of a coating layer. Furthermore, if so desired, a doctoring device can be positioned at a doctor station, adjacent to the coating location, on the downstream side relative to the movement of the material web for the purpose of smoothing and/or metering the coating. The coating apparatus incorporates an apparatus for the generation and/or supplying of a fluid, preferably steam. This apparatus is positioned adjacent to the coating location or to the doctor station on the downstream side relative to the movement L of the material web.

Apparatus for applying a liquid or viscid coating medium onto a moving fiber material web

The invention is directed to a method for the application of a liquid or pasty medium onto a traveling fiber material web. The medium is directly applied on at least one side of the traveling material web. The medium is pressed into the traveling material web after the medium is directly applied on the traveling material web.

Method and apparatus for applying a liquid or pasty medium on a traveling material web

Method of applying a coating medium on a traveling fiber material web

A device designed for coating a material web with a coating medium includes a coater, a metering/smoothing device positioned downstream of the coater in the direction of feed of the material web, at a certain distance from the coater, and a support roll around which the material web is guided. Moreover, the material web is guided around the support roll only in the area of the metering/smoothing device, and it traverses essentially in a straight line between the coater and the support roll. In accordance to a first aspect of this invention, a support arrangement supports the material web in the straight web section between the coater and the support roll. In accordance to a second aspect of this invention, devices are provided which stabilize the material web in the area where the web traverses in a straight line.

Device for the direct or indirect application of a liquid or viscid coating medium onto a moving material web

Apparatus for applying a liquid or pasty medium onto a traveling

The invention relates to a method for directly or indirectly applying a liquid or pasty application medium (2) onto one or both sides of a continuous surface (4), wherein the application medium (2) is applied to the surface (4) in a plurality of single application regions by means of a plurality of single application nozzles (12) spaced apart from one another side by side and/or in succession in the direction of width (B) and/or longitudinal direction of the surface (4) and clearly distanced (D) from the surface (4), the application medium (2) emerging from each of these nozzles, wherein adjacent single application regions each intersect (U) at least in part in their respective edge regions, causing a layer of application medium to be produced across substantially the entire width (B) of the surface (4) to be coated. The invention also relates to an apparatus for performing this method.

Method and apparatus for directly or indirectly applying a liquid pasty

A method and apparatus for coating a traveling layer of material, in particular paper and/or cardboard. An applicator implement applies a predetermined and proper amount of a liquid or pasty medium onto an outer surface of a first rotating applicator roller which in turn transfers the liquid or pasty medium onto a first side of the moving layer of material just as it is moving through a press nip. A second layer of coating medium is applied indirectly with a second applicator implement onto an outer surface of a second rotating applicator roller from where it is transferred onto the previously coated side of the moving material layer while the first coat of coating medium is still wet.

Method and apparatus for wet-in-wet coating of a moving layer of material

A system for selective treatment of a traveling web, preferably of paper or cardboard, by surface treatment or impregnation in which at least one coater is in the case of web treatment arranged after a dryer group for treatment of the one side of web. At least one further coater for treatment of the other side of the web is arranged before a further dryer group. Noncontact web deflectors are arranged after the coaters and noncontact dryers can be installed retroactively in existing dryer sections.

System for selective treatment of a traveling paper web

In a method for direct or indirect application of a liquid or pasty medium onto a traveling material web, notably of paper or cardboard, where during the application the cross profile (length profile) of the medium is modified under control and thereafter, in the direction of travel, the length profile (cross profile) of the previously applied medium is modified under control. Control of the cross profile and control of the length profile of the applied medium occur separately from one another in automatic control loops based on measurements of the applied profile. In addition is a pertaining apparatus with an applicator, an equalizer, a pertaining cross profile control loop, and a pertaining length profile control loop.

Method and apparatus for direct or indirect application of a liquid or

A method of application of a liquid or pasty medium onto a moving material web consisting, in particular, of paper or cardboard, in which a direct application (2) of a liquid or pasty medium (4) onto one side of a moving material web (1) and a contactless deflection (3) of the moving material web along a curved path of motion ensues, the side of the moving material web to be provided with the liquid or pasty medium passing through a concave curvature and the direct application (2) of the liquid or pasty medium ensuing directly ahead of the deflection (3) or during the deflection as a free jet along a contactlessly guided section of the moving material web. Additionally, an apparatus for implementing the method is described.

Method and an apparatus for the application of a liquid or pasty medium

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Heidenheim, Germany

Bernhard Kohl