Abstract: The invention relates to a sheet-like composite (10) comprising at least two groups of elements (12, 14) which each have a greater span in their longitudinal direction (22, 24) than in a direction extending transversely to the longitudinal direction (24, 22), wherein the elements (12) of a first group are flexurally rigid and are arranged with their longitudinal direction (22) extending obliquely, and in particular transversely, to the longitudinal direction (24) of the elements (14) of a second group, and wherein at least some of the elements (12) of the first group have a wooden surface constituting a non-metallic surface, characterized in that the sheet-like composition (10) is embodied as a fabric, in that the elements (12) of the first group form the weft of the sheet-like composite (10), and in that the elements (14) of the second group form the warp of said composite.

Abstract: A wire cloth, in particular a paper making wire cloth, has at least two fabric layers (1B, 1T; 2B, 2T), including an upper fabric layer made of wires in the making direction (101, 110) and wires in the cross direction (121, 130), and a lower fabric layer made of wires in the making direction and wires in the cross direction (141, 145). Wire bridges are formed for the individual fabric layers in such a way that they extend over a predeterminable distance within a pattern repeat without being tied to other wires. The wire bridges of the upper cross direction wires extend within a pattern repeat over at least nine making direction wires and under maximum one making direction wire. The wire bridges of the lower cross direction wires extend within the pattern repeat at least under six and over two making direction wires. Between two making direction wires extending over a cross direction wire, at least one other making direction wire extends under the same cross direction wire.

Abstract: A papermaking screen, especially for the sheet forming zone, has one paper side and one machine side with a first type of transverse yarns of the paper side and a second type of transverse yarns (25 to 40) of the machine side. The transverse yarns are woven with at least one type of longitudinal yarns (41 to 56). The longitudinal yarns (41 to 56) on the machine side within the machine-side pattern repeat bind two respective transverse yarns of the second type (25, 28; 31, 34; 37, 40). The division of the intersections for the longitudinal yarns is then improved, so that marks in the paper to be produced are prevented to the greatest extent possible.

Abstract: A papermaking screen includes at least one individual fabric for the paper side and at least one individual fabric for the machine side. Each of those fabrics is provided with a set of weft yarns (4, 6) and warp yarns (1, 5). At least one part of the superimposed individual fabrics is interconnected via binder yarns (3). The two fabric layers (paper side and machine side) are connected by binder yarns that are fully integrated into the fabric structure of the paper side and are able to support the resulting binding point due to each binder yarn (3) engaging with warp yarns (1) of the individual fabric from above at defined points on the paper side, while at least one weft yarn (2) of the individual fabric engages with the warp yarns (1) from below on the opposite side so as to lean against it such that the binder yarns remain on one plane along with the weft and the remaining warp yarns.

Abstract: A rotational shearing filter is disclosed which includes a housing and several spaced-apart, stationary, coaxial, annular, hollow filter disks that are disposed therein. Several shearing elements are retained in a torsion-proof manner on a central, rotatable drive shaft which penetrates the filter disks. The shearing elements are placed next to the annular surfaces of the filter disks, which point in the axial direction of the housing, so as to keep the filter disks penetrable for filtrate that penetrates from the housing into the filter disks. In order to prevent the shearing elements and the filter elements from touching each other as a result of thermal expansion, the shearing elements that are connected to the drive shaft so as to rotate therewith are guided thereon in an axially movable manner while spacers which axially displace the shearing elements according to longitudinal modifications of the housing occurring due to thermal conditions are positioned between the shearing elements.

Abstract: A papermaking wire cloth, especially for the sheet forming zone, includes a paper side (12) and a backing side (14). The wire cloth is formed out of at least one type of transverse threads (16, 18) which are interwoven with at least one type of longitudinal threads (20). The threads together form repeats (A-H) and at least two different types of crossing (22, 24). The longitudinal threads (20) are alternated within the respective repeat (A-H) on the backing side (14), forming the other type of intersection (24). The transverse threads (18) on the backing side (14) are held on their outer side (26) which faces the paper side (12), by at least two longitudinal threads (20) within the repeat (A-H) on the backing side (14). Maximum fibre support is achieved on the paper side accompanied by little marking of the upper side as the points of alternation or intersections are evenly distributed.

Abstract: A paper-making machine wire cloth has an individual woven cloth for the paper side (12) and an individual woven cloth for the running side (14). Each woven cloth includes a set of weft threads (16;20) and warp threads (18;22). The diameters and the number of paper side and running side warp threads (18;22) are essentially equal. The paper side warp threads (18) and weft threads (16), together, form a weave. At least a portion of the running side threads (22) passes into the paper side (12), extends over the subsequent paper side weft thread (16) and, afterwards, returns to the running side (14) each time at a location (24), at which this warp thread (22) is located above at least one assigned running side weft thread (20). A marking-free paper side is achieved in the weave, while simultaneously improving the surface uniformity.

Abstract: A composite fabric, particularly for a paper making wire, contains at least two warp sheets (10, 12) of individual warp threads (8). One of the warp sheets (10) forms an upper side (14) of the fabric. Another warp sheet (12) forms a lower side (16) of the fabric. Weft threads (18, 20) are woven into at least the warp sheet (10) which constitutes the upper side (14). By creating an alternating pattern (22) for the warp threads (8) of one warp sheet (10), at least one pair of weft threads (18, 20) are interlaced in the form of supporting weft threads. One of the weft threads (18) then produces an alternating pattern (22) for a predetermined number of warp threads (8). The other weft thread (20) belonging to the pair runs at least partially between both warp sheets (10, 12) and is used as a supporting bridge (24) for several successive warp threads (8) within the respective pattern (22). The two weft threads (18, 20) of each pair of weft threads intersect each other at predetermined points (26).

Abstract: A screw press in which a screw continuously dewaters a suspension. The screw has a threaded section and a downstream compression section with a variable squeeze, and the screw is powered to forward the suspension. A housing accommodates the threaded section and the compression section with the variable squeeze. The suspension is admitted in dilute form at an intake at one end of the press. At another end of the press, the suspension is delivered in dewatered form downstream of the compression section through an outlet. The housing is in the form of a wire basket permeable to liquids and impermeable to solids, and is axially displaceable back and forth adjacent the unthreaded compression section between a non-operating position and an operating position to vary an effective length of the basket. This effective length is zero in the non-operating position for emptying the press.

Abstract: A paper web forming screen includes two screen fabric plies made of longitudinal and traverse filamentary elements. The upper ply is made of longitudinal and traverse mono- or multi- or staple-filaments whereas a part of longitudinal and/or traverse filamentary elements in the lower ply is made of mono- or multi- or staple-filaments and other parts of non-twisted bundles of component filaments. A component filament in respective bundles is passed at different tie points over traverse mono- or multi- or staple-filaments in the upper ply to replace a longitudinal mono- or multi- or staple-filament in the upper ply. The latter mono- or multi- or staple-filament is passed either below the traverse mono- or multi- or staple-filaments in the tie points or below traverse filaments in the lower ply. The component filaments in the bundles are of the same thickness as the longitudinal and traverse mono- or multi- or staple-filaments in the upper ply.