EP1377702B1 - Vorrichtung und verfahren zur verdichtung einer faserbahn durch auf die bahn aufgebrachte pressdruckregelung - Google Patents

Vorrichtung und verfahren zur verdichtung einer faserbahn durch auf die bahn aufgebrachte pressdruckregelung Download PDF

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Publication number
EP1377702B1
EP1377702B1 EP02713015A EP02713015A EP1377702B1 EP 1377702 B1 EP1377702 B1 EP 1377702B1 EP 02713015 A EP02713015 A EP 02713015A EP 02713015 A EP02713015 A EP 02713015A EP 1377702 B1 EP1377702 B1 EP 1377702B1
Authority
EP
European Patent Office
Prior art keywords
conveyor
cylinder
roller
web
injector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02713015A
Other languages
English (en)
French (fr)
Other versions
EP1377702A1 (de
Inventor
Frédéric NOELLE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andritz Perfojet SAS
Original Assignee
Rieter Perfojet SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rieter Perfojet SAS filed Critical Rieter Perfojet SAS
Publication of EP1377702A1 publication Critical patent/EP1377702A1/de
Application granted granted Critical
Publication of EP1377702B1 publication Critical patent/EP1377702B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H13/00—Other non-woven fabrics
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
    • D04H3/11—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by fluid jet

Definitions

  • the first step of the process involves mechanically compacting the web of fibers or filaments and then wetting and entangling the fibers or filaments with a water injector.
  • This technique consists in general of first making a base ply formed of elementary fibers, natural, synthetic, or formed of a mixture of these fibers, in particular with the card or the lapper to obtain a very aerated web weighing a few tens grams per square meter, several hundred grams per square meter, for example a sheet of 200 g / m 2 has a thickness of about 100 mm.
  • the elementary fibers of this sheet are then immersed by means of a ramp of contiguous jets of water under high pressure (50 to 400 bar) to bring the base aerated layer to a thickness of the order of less than one to several millimeters, especially 0.5 to 5 millimeters.
  • the invention overcomes this disadvantage by a device and a method which make it possible to adjust the degree of compaction of the nonwoven fiber web.
  • the subject of the invention is therefore a device for compacting a web of nonwoven fibers or filaments as defined in claim 1.
  • This device is suitable for heavy sheets (> 150g / m 2 )
  • the roll When it is desired to substantially retain the volume of the nonwoven and compress it very little, the roll is placed in a position in which the first conveyor is not applied to the cylinder while being kept at a small distance, for example five millimeters . If, on the other hand, the fiber web is to be further compacted, in order to increase its density, the roll is placed in a position in which the extent of the arc along which the first conveyor is applied to the roll is greater. .
  • Directly downstream of the convergence point is meant that there is not between the point of convergence and the roller elements likely to change the path of the first conveyor.
  • the trajectory of this first conveyor is thus defined by the position of the roller and therefore the pressure that applies to the web between the second and the first conveyor is adjustable.
  • the means for modifying the position of the roller may in particular be a pneumatic, hydraulic or mechanical cylinder, a rack device, a wheel and worm assembly.
  • the compaction device is normally carried out by wetting the fibers of the web.
  • the conveyors are permeable to water.
  • the water jet of this injector is usually under a pressure of not more than 20 bars. It is desirable that the injector is in a centered position with respect to the arc along which the first conveyor is applied to the cylinder.
  • the invention provides means for modifying the position of the water injector allowing the jet to be directed, depending on how the injector is positioned, from the point of convergence to a point downstream of the point of convergence.
  • first conveyor is below the cylinder so that it does not tend to gravity apply to it and its position relative to the cylinder is determined by the roll, the first conveyor being also below the second conveyor.
  • first conveyor, the roller and the injector are arranged above the second conveyor.
  • the invention finally relates to a method of compacting a web of fibers between portions of two inner and outer conveyors wound on the same cylinder, according to claim 9
  • the core 3 From the base 1 of the device are two pillars 2 which carry a core 3 of a first external conveyor 4, consisting of a water permeable fabric.
  • the core 3 carries a roller 5 crazy and a motorized roller 6 for returning the conveyor 4 endless.
  • the core 3 further carries a roller 7 provided with a tensioning device 8 cooperating with one of the pillars 2, while another roller 9 is connected to a device 10 for guiding the conveyor.
  • the two mechanical screw jacks 12 each have a rod 34 which drives a bearing 36 of a journal 35 of the roll 11 and which leaves a body 33 of the jack.
  • the rod 34 can be raised or lowered in maneuvering a flywheel 37 driving a shaft 38 which meshes with a screw cooperating with the rod.
  • the core 3 also carries an injector 13 of water under pressure which comprises a cam 14 sliding in a curved slide at a curvature corresponding to that of a cylinder 15 facing the jet supplied by the injector 13.
  • the injector 13 is also carried by the core 3.
  • the roller 25 also comprises a tensioner device 28 and the roller 26 a guide device of the conveyor.
  • the second inner conveyor 27, consisting of a water permeable fabric, is wound on the cylinder 15, which is provided with a suction device 29, on a portion 30 extending from the point 31 where the jet emitted by the injector 13 reaches the cylinder 15, at an angle of about 170 °.
  • the two conveyors 4 and 27 converge at the point 31.
  • the conveyor 4 moves in the direction of clockwise.
  • the conveyor 27 moves in the counterclockwise direction.
  • the cylinder 15 moves in a counterclockwise direction. Downstream of point 31, there are provided two devices 32 for projecting jets of water under pressure.
  • the conveyor 4 is remote from the cylinder 15 and the nonwoven fiber web, which is compacted between the converging strands at the point 31 of the conveyors 4 and 27, is compacted only by this convergence, whereas at the figure 2 the fact of having lifted the roller 11 directly downstream of the point 31 causes the conveyor 4 to apply at a certain angle to the conveyor 27 and consequently via it to the cylinder 15 from the point 31.
  • the compression is stronger.
  • the injector 13 has been moved to the right at the figure 2 so that the jet that comes from it strikes a point substantially between point 31 and point 33 where the conveyor 4 leaves the conveyor 27.
  • the first conveyor 4, the roll 11 and the injector 13 are above the second conveyor 27.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Claims (9)

  1. Vorrichtung zum Verdichten eine Bahn aus ungewebten Fasern oder Fäden, mit einem Zylinder (15), einer ersten auf den Zylinder (15) zulaufende Fördereinrichtung (4) und stromab des Zylinders (15) in Konvergenz mit der Verlagerungsrichtung der ersten Fördereinrichtung (4) einer Rolle (11), über welche die erste Fördereinrichtung (4) läuft, sowie Mitteln (12) zum Ändern der Position der Rolle (11) in der Art, dass wenn die erste Fördereinrichtung (4) an den Zylinder (15) angelegt ist, die Weite des Bogens des Zylinders (15), mit welchem die erste Fördereinrichtung (4) an den Zylinder gelegt ist, geändert werden kann, gekennzeichnet durch eine zweite Fördereinrichtung (27), die über einen Abschnitt (30) des Zylinders (15) läuft und gegen die erste Fördereinrichtung (4) an einer Konvergenzstelle (31) stromauf des Abschnitts (30) des Zylinders konvergiert, wobei die Fördereinrichtungen (4, 17) wasserdurchlässig sind und der Zylinder (15) ein Zylinder mit Saugvorrichtung (29) ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sie einen Injektor (13) umfasst, welcher auf der Seite der ersten Fördereinrichtung (4) angeordnet ist, welche der Seite gegenüber liegt, an der sich der Zylinder (15) befindet.
  3. Vorrichtung nach Anspruch 2, gekennzeichnet durch Mittel (14, 15) zum Ändern der Position des Wasser-Injektors (13), welche ermöglichen, davon den Strahl von der Konvergenzstelle (31) auf eine Stelle stromab der Konvergenzstelle (31) zu richten.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass sich die erste Fördereinrichtung (4) unter dem Zylinder (15) befindet.
  5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass sich die erste Fördereinrichtung (4) unter der zweiten Fördereinrichtung (27) befindet.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die erste Fördereinrichtung (4), die Rolle (11) und der Injektor (13) über der zweiten Fördereinrichtung (27) angeordnet sind.
  7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Zylinder (15) saugend ist.
  8. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass Mittel (32) zur Projektion von Wasserstrahlen unter Druck auf den Abschnitt (30) des Zylinders (15) vorgesehen sind.
  9. Verfahren zum Kompaktieren einer Bahn aus Fasern zwischen einem Zylinder und über diesen Zylinder gerollten Abschnitt einer ersten Fördereinrichtung, welches darin besteht, die Weite des besagten Abschnitts der Fördereinrichtung in Abhängigkeit vom gewünschten Verdichtungsgrad zu ändern, dadurch gekennzeichnet, dass eine zweite Fördereinrichtung über einen Abschnitt des Zylinders zwischen die erste Fördereinrichtung und den Zylinder eingefügt wird.
EP02713015A 2001-03-06 2002-03-05 Vorrichtung und verfahren zur verdichtung einer faserbahn durch auf die bahn aufgebrachte pressdruckregelung Expired - Lifetime EP1377702B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0103011 2001-03-06
FR0103011A FR2821866B1 (fr) 2001-03-06 2001-03-06 Dispositif et procede de compactage d'une nappe de fibres a reglage de la pression applique a la nappe
PCT/FR2002/000788 WO2002070804A1 (fr) 2001-03-06 2002-03-05 Dispositif et procede de compactage d'une nappe de fibres a reglage de la pression appliquee a la nappe

Publications (2)

Publication Number Publication Date
EP1377702A1 EP1377702A1 (de) 2004-01-07
EP1377702B1 true EP1377702B1 (de) 2010-06-02

Family

ID=8860774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02713015A Expired - Lifetime EP1377702B1 (de) 2001-03-06 2002-03-05 Vorrichtung und verfahren zur verdichtung einer faserbahn durch auf die bahn aufgebrachte pressdruckregelung

Country Status (5)

Country Link
EP (1) EP1377702B1 (de)
AT (1) ATE470002T1 (de)
DE (1) DE60236582D1 (de)
FR (1) FR2821866B1 (de)
WO (1) WO2002070804A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2845697B1 (fr) * 2002-10-11 2005-05-27 Rieter Perfojet Procede et machine de production d'un non-tisse a reduction de la vitesse de deplacement de la nappe compactee
DE10254563A1 (de) * 2002-11-21 2004-06-03 Fleissner Gmbh & Co. Maschinenfabrik Vorrichtung zum hydrodynamischen Verschlingen der Fasern einer Faserbahn
FR2911616B1 (fr) * 2007-01-19 2009-07-03 Rieter Perfojet Soc Par Action Installation et procede de production d'une nappe a base de fibres ou de filaments
CN102534815B (zh) * 2010-11-24 2015-11-25 王大亮 无缝剥茧带制备方法
DE102013101431B4 (de) * 2013-02-13 2016-06-23 TRüTZSCHLER GMBH & CO. KG Vorrichtung und Verfahren zum hydrodynamischen Verfestigen von Vliesen, Geweben und Gewirken
DE102021107902A1 (de) 2021-03-29 2022-09-29 Andritz Küsters Gmbh Anlage zur Verfestigung mindestens einer nass- oder trockengelegten Faserlage zu einer Vliesbahn, mit einem Förderer, der ein umlaufendes Band mit einem oberen Trum umfasst, auf welches die mindestens eine Faserlage ablegbar und in einer Produktionsrichtung verlagerbar ist

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3110612A (en) * 1960-12-20 1963-11-12 Albemarle Paper Mfg Company Method and apparatus for cast coating paper
US3940833A (en) * 1973-04-26 1976-03-02 Cluett, Peabody & Co., Inc. Method for compressively shrinking textile fabrics at high speed
GB1508534A (en) * 1975-08-12 1978-04-26 Sandvik Conveyor Gmbh Twin belt system
FR2730246B1 (fr) * 1995-02-03 1997-03-21 Icbt Perfojet Sa Procede pour la fabrication d'une nappe textile non tissee par jets d'eau sous pression, et installation pour la mise en oeuvre de ce procede
GB2300429B (en) * 1995-05-03 1999-01-13 Courtaulds Eng Ltd Non-woven fabric manufacture
DE19627256A1 (de) * 1996-07-08 1998-01-15 Fleissner Maschf Gmbh Co Verfahren und Vorrichtung zum hydromechanischen Verschlingen der Fasern einer Faserbahn
EP0859076B1 (de) * 1997-02-12 2002-08-28 Fleissner GmbH & Co. Maschinenfabrik Vorrichtung zum hydrodynamischen Verschlingen der Fasern einer Faserbahn

Also Published As

Publication number Publication date
FR2821866B1 (fr) 2003-05-16
ATE470002T1 (de) 2010-06-15
DE60236582D1 (de) 2010-07-15
EP1377702A1 (de) 2004-01-07
WO2002070804A1 (fr) 2002-09-12
FR2821866A1 (fr) 2002-09-13

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