A sealing strip for sealing a suction zone of a suctioned roll of a machine for producing and/or processing a fibrous web has wear volume, which is gradually worn away by tribological contact with the roll. The sealing strip system further includes a sensor system for detecting the state of wear of the sealing strip, and an evaluation unit. The sensor system is embedded in a sensor channel extending within the sealing strip in the longitudinal direction at the wear volume across substantially the entire length of a sealing surface of strip, and is connectable to the evaluation unit and/or to a unit for supplying the sensor system with a medium for generating information via a connection provided on the lower side of the sealing strip, and leading out of the strip on the side of the wear volume facing away from the sealing surface.

A sealing strip for sealing a suction zone of a suctioned roll of a machine for producing and/or processing a fibrous web has wear volume, which is gradually worn away by tribological contact with the roll. The sealing strip system further includes a sensor system for detecting the state of wear of the sealing strip, and an evaluation unit. The sensor system is embedded in a sensor channel extending within the sealing strip in the longitudinal direction at the wear volume across substantially the entire length of a sealing surface of strip, and is connectable to the evaluation unit and/or to a unit for supplying the sensor system with a medium for generating information via a connection provided on the lower side of the sealing strip, and leading out of the strip on the side of the wear volume facing away from the sealing surface.

A sealing strip for sealing a suction zone of a suctioned roll of a machine for producing and/or processing a fibrous web has wear volume, which is gradually worn away by tribological contact with the roll. The sealing strip system further includes a sensor system for detecting the state of wear of the sealing strip, and an evaluation unit. The sensor system is embedded in a sensor channel extending within the sealing strip in the longitudinal direction at the wear volume across substantially the entire length of a sealing surface of strip, and is connectable to the evaluation unit and/or to a unit for supplying the sensor system with a medium for generating information via a connection provided on the lower side of the sealing strip, and leading out of the strip on the side of the wear volume facing away from the sealing surface.

An inclined-wire former for producing a fibrous web, in particular a long-fibered paper or wet-laid nonwoven web, includes a wire that runs over a breast roll, subsequently runs inclined at an angle with respect to the horizontal, before it is deflected at a deflection point into a substantially horizontal direction. A headbox in the inclined section of the wire applies a fibrous suspension to the top side of the wire. At least one dewatering element is arranged on the bottom side. The headbox has a front wall which defines, together with the wire, an outlet gap for the at least one fibrous suspension. The front wall of the headbox extends in the wire running direction beyond the deflection point of the wire, such that the outlet gap is arranged above the substantially horizontally extending portion of the wire.

An inclined-wire former for producing a fibrous web, in particular a long-fibered paper or wet-laid nonwoven web, includes a wire that runs over a breast roll, subsequently runs inclined at an angle with respect to the horizontal, before it is deflected at a deflection point into a substantially horizontal direction. A headbox in the inclined section of the wire applies a fibrous suspension to the top side of the wire. At least one dewatering element is arranged on the bottom side. The headbox has a front wall which defines, together with the wire, an outlet gap for the at least one fibrous suspension. The front wall of the headbox extends in the wire running direction beyond the deflection point of the wire, such that the outlet gap is arranged above the substantially horizontally extending portion of the wire.

A dewatering roll (10) comprises a roll body (20), a mantle support structure (30) and a mantle (40). The mantle support structure (30) is attached around the roll body (20). The mantle (40) is attached against an outer surface (36) of the mantle support structure (30). The mantle (40) has a plurality of through holes (42) constituting mantle flow paths (44). The mantle support structure (30) presents support flow paths (38) from the outer surface (36) of the mantle support structure (30). The support flow paths (38) are in fluid contact with the mantle flow paths (44). The outer surface (36) of the mantle support structure (30) has a static geometric shape defining an envelope having a smaller radius in vicinity of each axial end (15) than in vicinity of a center (16). Thereby, the inner surface (48) of the mantle (44) assumes the shape of the envelope.

A dewatering roll (10) comprises a roll body (20), a mantle support structure (30) and a mantle (40). The mantle support structure (30) is attached around the roll body (20). The mantle (40) is attached against an outer surface (36) of the mantle support structure (30). The mantle (40) has a plurality of through holes (42) constituting mantle flow paths (44). The mantle support structure (30) presents support flow paths (38) from the outer surface (36) of the mantle support structure (30). The support flow paths (38) are in fluid contact with the mantle flow paths (44). The outer surface (36) of the mantle support structure (30) has a static geometric shape defining an envelope having a smaller radius in vicinity of each axial end (15) than in vicinity of a center (16). Thereby, the inner surface (48) of the mantle (44) assumes the shape of the envelope.

A vacuum draw apparatus for preparing a fiber and/or particle web comprising a means for drawing a vacuum on a mass of fibers and/or particles, said vacuum draw means having an opening for applying a vacuum to said mass of fibers and/or particles, an access gate having a patterned opening located between the mass of fibers and/or particles and opening of said vacuum means, and means for moving said access gate, whereby the vacuum draw system will provide an oscillating pull on a mass of fibers and/or particles to work said mass to redistribute and/or further consolidate the fibers and/or particles.

A vacuum draw apparatus for preparing a fiber and/or particle web comprising a means for drawing a vacuum on a mass of fibers and/or particles, said vacuum draw means having an opening for applying a vacuum to said mass of fibers and/or particles, an access gate having a patterned opening located between the mass of fibers and/or particles and opening of said vacuum means, and means for moving said access gate, whereby the vacuum draw system will provide an oscillating pull on a mass of fibers and/or particles to work said mass to redistribute and/or further consolidate the fibers and/or particles.

A sealing device for sealing at least one underpressure or overpressure zone adjoining a surface which is moved in a movement direction in a paper, tissue or cardboard machine, includes at least one sealing element which is located opposite the moved surface and has at least one feed channel for a lubricant. In order to considerably decrease the wear of a sealing element uniformly over the entire length thereof, the at least one feed channel ends in a supply channel, which is arranged at the beginning of the sealing element in the movement direction.