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1.发明公开BLATTBILDUNGSSYSTEM FÜR EINE MASCHINE ZUR HERSTELLUNG EINER MEHRSCHICHTIGEN FASERSTOFFBAHN 有权SHEET教育体系为机器制造多层纤维网
公开(公告)号：EP2379801A1
公开(公告)日：2011-10-26
申请号：EP09740129.3
申请日：2009-10-22
申请人： Voith Patent GmbH
IPC分类号： D21F1/02
摘要： The invention relates to a sheet-forming system (1) for a machine for producing a multilayer fibrous material web (4), comprising a multilayer headbox (2) having a headbox nozzle (6), which has at least two nozzle chambers (8.1, 8.2) that are separated from one another by at least one separating wedge (7), and further comprising a gap former (3), which is connected directly downstream of the multilayer headbox (2) and has two continuous revolving screens (13, 14), the first screen (13) of which runs over a circumferential area (16) of a forming roll (15) and the second screen (14) of which runs over a circumferential area (18) of a breast roll (17) and then runs onto the first screen (13) in the area of the forming roll (15) to form a wedge-shaped material inlet gap (19). The sheet-forming system (1) according to the invention is characterized in that the separating wedge (7) has a separating wedge protrusion (Ü.7) in a range of 0.05 to 3.0 of the largest single gap width (s.10.1) of the at least two nozzle chambers (8.1, 8.2); the separating wedge (7) comprises two separating wedge areas (7.1, 7.2), each having one separating wedge angle (α, ß), an upstream separating wedge starting area (7.1) and a downstream separating wedge ending area (7 2); the two separating wedge angles (α, ß) of the two separating wedge areas (7.1, 7.2) assume different angle values, wherein the separating wedge starting angle (α) of the upstream separating wedge initial area (7.1) assumes a greater angle value than the separating wedge ending angle (ß) of the downstream separating wedge end area (7.2), and at least one separating wedge surface (7.0; 7.0, 7.U) of the separating wedge (7) is provided as a nonplanar transitional area (23.O; 23.O, 23.U) between the two separating wedge areas (7.1, 7.2) of the separating wedge (7); the fibrous material suspension free jet (20) formed from at least two fibrous material suspension streams (5.10, 5.20) has a free jet length (L.20) in the range of 100 to 500 mm, and the forming roll (15) has a diameter (D.15) in the range of 1,200 to 2,500 mm.
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公开(公告)号：EP2205792B1
公开(公告)日：2011-01-26
申请号：EP08804360.9
申请日：2008-09-18
申请人： Voith Patent GmbH
发明人： PRÖSSL, Jürgen , SCHWANER, Mathias
摘要： Disclosed is a twin-wire former of a machine for producing a fiber web, particularly a paper or cardboard web, from a fiber suspension. Said twin-wire former comprises a revolving continuous bottom wire and a revolving continuous top wire that are brought together to form a twin wire zone into which the fiber suspension is introduced. In the region in which the wires are brought together, at least one of the two wires is resiliently pressed against the other wire by means of pressing strips that generally extend transverse to the direction of travel of the machine. The twin-wire former according to the invention is characterized in that the width of a respective pressing strip amounts to ≥ 30 mm and preferably ranges from about 45 to about 180 mm, said width being measured relative to the direction of travel of the machine. Furthermore, the product of the width of a respective pressing strip in mm and the travel speed of the machine in m/min amounts to ≥ 25,000, preferably ≥ 30,000, and the pressing strips that generally extend transverse to the direction of travel of the machine can be individually and resiliently pressed against the other wire.
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3.发明授权BLATTBILDUNGSSYSTEM FÜR EINE MASCHINE ZUR HERSTELLUNG EINER MEHRSCHICHTIGEN FASERSTOFFBAHN 有权SHEET教育体系为机器制造多层纤维网
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4.发明公开
公开(公告)号：EP2352879A2
公开(公告)日：2011-08-10
申请号：EP09736232.1
申请日：2009-10-16
申请人： Voith Patent GmbH
IPC分类号： D21F1/02
摘要： The invention relates to a dual-layer material ramp (1) for a machine for producing a dual-layered fibrous web (3), in particular a dual-layered paper or cardboard web, from two fibrous suspensions (4.1, 4.2), comprising a material ramp nozzle (2) with two nozzle spaces (7.1, 7.2) extending along the width (B) and separated from one another on the inside by a separating wedge (5), said nozzle spaces guiding a respective fibrous suspension (4.1, 4.2) during operation of the dual-layer material ramp (1) as fibrous suspension streams (6.1, 6.2) and coming together, each of said nozzle spaces comprising an upstream feed device (8.1, 8.2), a downstream outlet gap (9.1, 9.2) with a gap width (s9.1, s9.2), said gap extending along the width (B) and an outer wall (10.1, 10.2) on the outside, wherein the separating wedge (5) comprises two separating wedge surfaces (5.0, 5.U) that are contacted by the respective fibrous suspension stream during operation of the dual-layer material ramp (1). The dual-layer material ramp (1) according to the invention is characterized in that the separating wedge (5) comprises two separating wedge areas, each having a separating wedge angle (α, ß), an upstream separating wedge starting area (5.1) and a downstream separating wedge end area (5.2), that the two separating wedge angles (α, ß) of the two separating wedge areas (5.1, 5.2) assume different angular values, wherein the separating wedge starting angle (α) of the upstream separating wedge starting area (5.1) assumes a greater angular value than the separating wedge end angle (ß) of the downstream separating wedge end area (5.2), and that a non-planar transition area (12.0; 12.0, 12.U) is provided between at least one separating wedge surface (5.0; 5.0, 5.U) of the separating wedge between the two separating wedge areas (5.1, 5.2) of the separating wedge (5).
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公开(公告)号：EP2315873A1
公开(公告)日：2011-05-04
申请号：EP09765744.9
申请日：2009-06-03
申请人： Voith Patent GmbH
发明人： BRUNNAUER, Erich , FEICHTINGER, Manfred , NOUAZE, Jean Y. , PRÖSSL, Jürgen , SCHWANER, Mathias , SCHWARZ, Wolfgang , STELZHAMMER, Franz
摘要： The invention relates to a method for producing a test liner of at least one the types TL 1, TL 2, TL A, TL B and TL C and/or a wave material for using a twin-wire former (10) having two wire belts (12, 14) comprising a lower wire (12) and an upper wire (14) and forming a twin wire-former. The wire belts (12, 14) that converge in the area of a forming roller (16) forming a wedge-shaped inlet gap (18) that receives a fibrous material suspension from a material outlet (20), are guided about said forming roller (16) in a first section of the twin wire-former area, over additional drainage elements (22', 22'', 24, 26) in a second section of the twin wire-former that connects directly and is steeply inclined to the base and is guided on the end of the twin wire-former, over a separating device (28), in the area wherein one (12) of the two twin-wires (12, 14) is separated from the formed fibrous material and the other from the wire belt (14).
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公开(公告)号：EP2205792A1
公开(公告)日：2010-07-14
申请号：EP08804360.9
申请日：2008-09-18
申请人： Voith Patent GmbH
发明人： PRÖSSL, Jürgen , SCHWANER, Mathias
摘要： Disclosed is a twin-wire former of a machine for producing a fiber web, particularly a paper or cardboard web, from a fiber suspension. Said twin-wire former comprises a revolving continuous bottom wire and a revolving continuous top wire that are brought together to form a twin wire zone into which the fiber suspension is introduced. In the region in which the wires are brought together, at least one of the two wires is resiliently pressed against the other wire by means of pressing strips that generally extend transverse to the direction of travel of the machine. The twin-wire former according to the invention is characterized in that the width of a respective pressing strip amounts to ≥ 30 mm and preferably ranges from about 45 to about 180 mm, said width being measured relative to the direction of travel of the machine. Furthermore, the product of the width of a respective pressing strip in mm and the travel speed of the machine in m/min amounts to ≥ 25,000, preferably ≥ 30,000, and the pressing strips that generally extend transverse to the direction of travel of the machine can be individually and resiliently pressed against the other wire.
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