Abstract: A paper machine fabric comprising at least two machine direction yarn systems, which are bound together by means of a binding yarn system. The layer of the machine side is formed of a warp system and a binding yarn system. The binding yarn system comprises a binding yarn, binding yarns or a pair of binding yarns. The binding yarn, the binding yarns or the pair of binding yarns is/are bound to more than one bottom warps at the point where the binding yarn binds the top and bottom warps together.

Abstract: The invention relates to a method of manufacturing a press felt and to a press felt and a base fabric. The base fabric comprises at least a first planar compo-nent (4), which includes a first transverse (CMD) joining edge area (11) and a second transverse joining edge area (12). The joining edge areas (11, 12) are arranged to overlap each other and attached to each other undetachably.

Abstract: A filter cloth whose underside comprises substantially parallel, additional yarns 8 that are thicker than the rest of the yarns of the cloth, substantially parallel channels 9 being formed between the yarns, wherein filtered liquid passed through the cloth is allowed to flow in the direction of the surface of a filtering element 10 between the filtering portion of the cloth and the surface of the element. The invention further relates to a filtering module manufactured from the filter cloth of the invention.

Abstract: A method of manufacturing a press felt, a press section, and a press felt. The press felt comprises a base structure (11), a batt fibre layer (12) being attached to a first, web-side surface (B) of the base structure. Further, the structure of the press felt is compacted by treating it with a polymer material at least on the side of the first felt surface (B). After the polymer treatment, the surface of the felt is ground smooth.

Abstract: The invention relates to a press belt (1) made from an elastomer material and forming a closed loop, the belt having an inner surface (2) and an outer surface (3) and three layers of reinforcement yarns (7?, 5?, 6?) arranged inside the elastomer material. In the invention, an outermost yarn layer (7) is formed by longitudinal and transversely adjacent reinforcement yarns (7?) of the press belt (1), which absorb energy and are restored from deformation with delay in connection with deformation.

Abstract: The invention relates to a method of making a solid-liquid filtration cloth, a solid-liquid filtration cloth, and a filter in which the solid-liquid filtration cloth is arranged. The filter cloth (7) is provided with yarns (13b) having a highly changing length and a long free run in the weave. When the length of the yarns (13b) is allowed to shorten significantly, a filtration portion (15) on the side of a surface (14) of the cloth obtains a corrugated shape, providing the cloth with a large filtering area.

Abstract: A paper machine fabric comprising at least two machine direction yarn systems, which are bound together by means of a binding yarn system. The layer of the machine side is formed of a warp system and a binding yarn system. The binding yarn system comprises a binding yarn, binding yarns or a pair of binding yarns. The binding yarn, the binding yarns or the pair of binding yarns is/are bound to more than one bottom warps at the point where the binding yarn binds the top and bottom warps together.

Abstract: A paper machine fabric comprising at least two separate layers formed using at least two separate yarn systems: one constituting the paper side and comprising machine direction and cross machine direction yarns and the other constituting the machine side and comprising machine direction and cross machine direction yarns, the yarn systems being arranged to form independent structures in both directions of the fabric. The structures are bound together with binder yarns, a binder yarn being arranged to form part of the weave of a layer on the paper side surface and arranged to be interwoven with a layer of the machine side by being interwoven under at least one yarn in the machine side layer. The number of machine direction yarns in the layer constituting the machine side is larger than the number of machine direction yarns in the layer constituting the paper side.

Abstract: A press felt and a base fabric. The base fabric (10) includes seam loops (4) for joining the transverse joining edges of the press felt to each other. In addition to the longitudinal yarns (2, 3) that form seam loops, the base fabric includes longitudinal surface yarns (6) extending over a seam (1) on the web-side surface (D). At the seam, there are additional transverse yarns (7), which are attached at least to the longitudinal surface yarns so as to form a seam flap (8). The longitudinal surface yarns (6) are cut after batt fibre has been attached.

Abstract: A method of manufacturing a press felt, a press section, and a press felt. The press felt comprises a base structure (11), a batt fibre layer (12) being attached to a first, web-side surface (B) of the base structure. Further, the structure of the press felt is compacted by treating it with a polymer material at least on the side of the first felt surface (B). After the polymer treatment, the surface of the felt is ground smooth.

Abstract: A method of manufacturing a press felt, a press felt and a base fabric. The press felt comprises a base fabric with a batt fiber layer attached on at least the surface facing a paper web. The base fabric is a laminate comprising at least two separate layers. For the base fabric, one or more base fabric modules are provided, which are assembled with a butt seam into a closed loop.

Abstract: The invention relates to a filter cloth intended for a filter which has a variable volume and is based on diaphragm extrusion, particularly for a Larox®-type vertical pressure filter. The filtering properties of the filter cloth (5) are substantially similar in both directions through the cloth since slurry containing liquid and solids is alternately placed on the different sides of the filter cloth. The filter cloth of the invention comprises a middle layer (15) and protective layers (16a, 16b; 17a, 17b) provided on both outer surfaces of the middle layer. The middle layer can have e.g. a woven structure, and the protective layers may be batt fiber layers attached to the middle layer by needling. According to a preferred embodiment of the invention, the protective layers according to the invention are denser than the middle layer.

Abstract: A method of making a press felt, a press felt and a base fabric. The base fabric comprises a surface component on the surface facing the paper web to be dried and a base component below the surface component. The transverse jointing edges of the base component are provided with seam loops, by means of which the base component can be connected into a closed loop. At the first jointing edge of the base fabric the surface component extends for a predetermined distance longer than the base component and forms a seam flap that protects the seam area of the base component.

Abstract: A method of making a press felt, and a press felt. The press felt comprises a continuous base fabric in the lateral direction, and at least one batt fiber layer. The closed-loop base fabric is made of longitudinal and transverse yarns. The properties of the press felt, such as permeance, are arranged to be different in edge portions of the press felt from the midportion of the felt.

Abstract: A dryer screen, which is woven of flat machine direction threads and round cross-machine direction threads. After weaving the fabric is subjected to heat treatment, and as a result of the strong shrinkage of the weft threads the adjacent warp threads are overlapping in relation to one another on the paper side.

Abstract: A filter cloth whose underside comprises substantially parallel, additional yarns 8 that are thicker than the rest of the yarns of the cloth, substantially parallel channels 9 being formed between the yarns, wherein filtered liquid passed through the cloth is allowed to flow in the direction of the surface of a filtering element 10 between the filtering portion of the cloth and the surface of the element. The invention further relates to a filtering module manufactured from the filter cloth of the invention.

Abstract: A method of making a press felt, a press felt and a base fabric. The base fabric comprises a surface component on the surface facing the paper web to be dried and a base component below the surface component. The transverse jointing edges of the base component are provided with seam loops, by means of which the base component can be connected into a closed loop. At the first jointing edge of the base fabric the surface component extends for a predetermined distance longer than the base component and forms a seam flap that protects the seam area of the base component.

Abstract: A filter cloth whose underside comprises substantially parallel, additional yarns that are thicker than the rest of the yarns of the cloth, substantially parallel channels being formed between the yarns, wherein filtered liquid that passed through the cloth, is allowed to flow in the direction of the surface of a filtering element between the filtering portion of the cloth and the surface of the element. The invention further relates to a filtering module manufactured from the filter cloth of the invention.

Abstract: A solid-liquid filtration cloth comprising a base fabric woven from polymer yarns. After the weaving, the base fabric has been treated by a polymer material, which has better electric conductivity than the polymer yarns of the base fabric. The polymer treatment is carried out by means of a polyaniline solution or a polypyrrole solution, for instance. After the polymer treatment, at least the yarns on the surface of the base fabric comprise a coating of an electrically conductive polymer.

Abstract: A method of manufacturing a press felt, a press felt and a base fabric. The press felt comprises a base fabric with a batt fibre layer attached on at least the surface facing a paper web. The base fabric is a laminate comprising at least two separate layers. For the base fabric, one or more base fabric modules are provided, which are assembled with a butt seam into a closed loop.