Voith Patent Gmbh

Voith Paper Patent Gmbh

Hubert Walkenhaus

Jeffrey Herman

Luiz Carlos Silva

Thomas Thoroee Scherb

Thomas Thoröe Scherb

Robert Eberhardt

Susanne Klaschka

Robert L Crook

Arved H Westerkamp

Joachim Henssler

Uwe Koeckritz

Johan Einarsson

Matthias Schmitt

Sanjay R Patel

Uwe Köckritz

Heping Zhang

Craig Valentine

Reinhard Holl

Johan Malmquist

Cedric Fitzer

Calvin Hayden

Torsten Wich

Ademar Lippi Alves Fernandes

Luis Carlos Silva

Thomas Hensler

Isabel Prause

Thomas Thoroe Scherb

Robert Crook

A covering for a machine for producing or processing a fibrous web, in particular a paper or tissue web. The covering includes a basic covering which has a web-contacting upper side and an underside, and a plurality of polymer elements. The polymer elements are welded onto the upper side and at least some of the polymer elements are in the form of yarn-shaped and/or tape-shaped polymer elements.

Paper machine clothing

A seamed felt for use in a machine for producing a tissue web has a single-layer or multilayer base structure and at least one layer of non-woven fibers. The base structure has a textile structure with MD threads which form seam loops at the two front edges of the base structure. The fabric can be made endless by connecting its front edges by way of a seam. The seam can be formed by interlocking the seam loops of the two front edges and introducing a push-in element. The MD threads wholly or predominantly have a diameter between 0.25 mm and 0.45 mm, in particular between 0.3 mm and 0.35 mm, and the thread density of the MD threads is more than 37%, in particular between 37% and 45%. There is also described a corresponding machine and a method for producing a tissue web.

Seamed felt and use of the seamed felt in a tissue machine

A fabric, in particular a felt, for use in a machine for producing a tissue web, has a base structure, which has a textile structure with MD threads, and at least one layer of nonwoven fibers. The MD threads predominantly or as a whole have a diameter ranging between 0.25 mm and 0.45 mm, in particular between 0.3 mm and 0.35 mm, and the thread density of the MD threads is more than 37%, in particular between 37% and 45%. There is also described a machine and a method for producing a tissue web using such a fabric.

Fabric and use of the fabric in a tissue machine

A clothing for a machine for producing a fibrous web, especially a paper, cardboard, tissue or cellulose pulp web. The clothing has a basic structure with a top side and a running side as well as a nonwoven support at least on one side. The nonwoven support has a functional zone, which extends over more than 50 &#x3bc;m in the thickness direction of the clothing and which includes a first portion and a second portion of nonwoven fibers. The nonwoven fibers of the first portion are formed of, or include, a polyurethane, especially a thermoplastic polyurethane, while the nonwoven fibers of the second portion are a polymer material not including a polyurethane. The first portion makes up between 10 wt. % and 60 wt. %, of the functional zone. There is also described a method for production and a suitable nonwoven fabric.

Paper machine clothing, method for producing same, and nonwoven fabric

A clothing, in particular for use in a press section of a machine for manufacturing a fibrous web, such as a paper, cardboard, or tissue web, includes a base structure and at least one staple-fiber layer which is disposed on the base structure and is connected thereto. The clothing is assembled from a plurality of strips which are provided in the form of planar formations having a proportion of the base structure and a proportion of the at least one staple-fiber layer. Two mutually opposite edges of the strips have seam loops which are each connected to seam loops of the edges of adjacent strips. The edges having the seam loops are oriented in a cross-machine direction of the clothing. A method for manufacturing a clothing is also provided.

Clothing and method for the production thereof

A machine for producing fiber-containing web material, in particular tissue paper, includes a permeable dewatering belt for transporting fiber-containing source material used for producing web material from a forming section to a suction/pressing section, and a press belt assembly assigned to the suction/pressing section. The source material is received in the suction/pressing section between the press belt assembly and the dewatering belt and the press belt assembly presses the source material and the dewatering belt against a suction assembly of the suction/pressing section. The press belt assembly has a single press belt providing a source material contact surface.

Machine for producing fiber-containing web material, in particular tissue paper

A permeable belt for use in a system for dewatering and/or drying a fibrous web. The permeable belt capable of being subjected to a tension of at least approximately 30 kN/m, the permeable belt having at least one side having an open area of at least approximately 25% and a contact area of at least approximately 10%.

Advanced dewatering system

A pressing arrangement including at least one first fabric and second fabric both being permeable. A paper web is disposed between the first fabric and the second fabric. A pressure producing element is in contact with the first fabric. A support surface of a supporting structure is in contact with the second fabric. A differential pressure is provided between the first fabric and the support surface that acts on the first fabric, the paper web, and the second fabric, whereby the paper web is subjected to mechanical pressure and experiences a predetermined hydraulic pressure so as to cause water to be drained from the paper web. The pressing arrangement is structured and arranged to allow air to flow in a direction from the first fabric through the paper web and through the second fabric.

Press section and permeable belt in a paper machine

The invention relates to a clothing especially a press felt for a paper, cardboard or tissue machine with a nonwoven structure comprising staple fibers and which provides the paper and running side of the clothing and with a base structure which is embedded into the nonwoven structure, whereby the base structure comprises a warp knit structure which has sewing threads and reinforcing threads extending lengthways parallel to each other and which have a greater flexural strength than the sewing threads, whereby the sewing threads form loops into which the reinforcing threads are tied thereby forming the warp knit structure. The invention is characterized in that an intermediate layer is arranged at the warp knit structure which is connected with the reinforcing threads by way of the sewing threads.

A belt press for a paper machine, the belt press including a roll having an exterior surface and a permeable belt. The permeable belt including a first side being guided over a portion of the exterior surface of the roll. The permeable belt having a tension of at least approximately 30 kN/m. The first side of the belt having an open area of at least approximately 25% and a contact area of at least approximately 10%. A web travels between the permeable belt and the exterior surface of the roll.

Method of drying a paper web in a press arrangement. The method includes moving the paper web, disposed between at least one first fabric and at least one second fabric, between a support surface and a pressure producing element and moving a fluid through the paper web, the at least one first and second fabrics, and the support surface. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

System for drying a tissue or hygiene web. The system includes a permeable structured fabric carrying the web over a drying apparatus. A permeable dewatering fabric contacts the web and is guided over the drying apparatus. A mechanism is used to apply pressure to the permeable structured fabric, the web, and the permeable dewatering fabric at the drying apparatus. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

A system for drying one of a tissue and a hygiene web including a drying apparatus, a permeable structured fabric, a permeable dewatering fabric and a mechanism for applying pressure. The permeable structured fabric carries the web over the drying apparatus. The permeable dewatering fabric contacts the web and is guided over the drying apparatus. The mechanism for applying pressure, applies pressure to the permeable structured fabric, the web, and the permeable dewatering fabric at the drying apparatus.

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Kerpen, Germany

Hubert Walkenhaus