WO2009143809A1 - Dispositif d'application d'un fluide sous pression sur un matériau plat - Google Patents

Dispositif d'application d'un fluide sous pression sur un matériau plat Download PDF

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Publication number
WO2009143809A1
WO2009143809A1 PCT/DE2009/000705 DE2009000705W WO2009143809A1 WO 2009143809 A1 WO2009143809 A1 WO 2009143809A1 DE 2009000705 W DE2009000705 W DE 2009000705W WO 2009143809 A1 WO2009143809 A1 WO 2009143809A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
pressure
controllable
bars
bar
Prior art date
Application number
PCT/DE2009/000705
Other languages
German (de)
English (en)
Inventor
Thomas Weigert
Original Assignee
Fleissner Gmbh
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 Fleissner Gmbh filed Critical Fleissner Gmbh
Publication of WO2009143809A1 publication Critical patent/WO2009143809A1/fr

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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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
    • B05B9/0423—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material for supplying liquid or other fluent material to several spraying apparatus

Definitions

  • the invention relates to a device for acting on sheet material by means of a pressurized medium according to the preamble of claim 1.
  • DE 603 07 058 T2 discloses a device for the admission of sheet material by means of a fluid under pressure.
  • the device consists of a nozzle bar (water bar), which has on its underside a nozzle strip with a plurality of fine outlet openings for a pressurized medium, in particular water.
  • the woven, knitted fabric or nonwoven fabric (nonwoven) which is preferably transported in the form of a web under the nozzle bar, is acted upon by the pressurized water jets. In the case of a nonwoven, such a solidification or entanglement of the fibers or filaments can be produced.
  • devices for hydrodynamic loading are known, in which the needling drums are assigned a plurality of nozzle bars. Depending on the application, the nozzle bars can work simultaneously, with different operating parameters being set. Also, one or more nozzle bars may remain off. For this purpose, the nozzle bars are connected to controllable high-pressure pumps for supplying pressure to the fluid to be acted upon.
  • Object of the present invention is to improve a device of the generic type and in particular to enable switching operations during operation.
  • each of the two nozzle strips is connected to its own controllable pressure supply and to switch from one nozzle bar to the other nozzle bar, the one pressure supply shut down while the second pressure supply is started up.
  • the time courses (curves) according to which one pressure supply is lowered while the other pressure supply is raised, are selected in such a way that the type and quality of the hydrodynamic admission of the material to be processed does not change during this switching process.
  • the curves are selected so that the sum of the hydrodynamic energy, which is introduced by the two nozzle bars in the estate remains the same.
  • the at least two nozzle bars between which can be switched, connected to a respective controllable high-pressure pump as a pressure supply.
  • a controller Via a controller, the two high-pressure pumps are now operated as described above, ie the power of one pump is raised, while the other high pressure pump is shut down.
  • the control unit controls the pumping up and down according to stored characteristic curves (curves).
  • a preferred embodiment of the invention provides for a system with a plurality of nozzle bars, which are assigned to a plurality of sewing drums and / or needling bands as processing stations, that each nozzle bar of a processing station acts as a switchable reserve bar.
  • These reserve nozzle bars are connected via switchable valves to a common high-pressure pump, which is connected to a controller.
  • the other nozzle bars are fed by separate high-pressure pumps, which are also connected to the controller.
  • controllable pressure suppliers are controllable high pressure pumps.
  • a controllable pressure supplier can also be provided with a controllable throttle, a high-pressure pump.
  • the pressure suppliers are appropriately controllable vapor pressure generators.
  • FIG. 1 shows a processing station in the form of a Vernade- treatment drum 1, the two nozzle bars 2, 3 are assigned.
  • suction and other hydrodynamic processing facilities are known per se and not shown.
  • the two nozzle bars are each connected to a controllable pressure supplier 4, 5.
  • the two pressure supplier 4, 5 are connected to a controller 6.
  • the controller 6 controls after given command to switch between the two nozzle bars 2, 3 the pressure supplier 4 from the output value P4 to a predetermined characteristic to zero, while the pressure supplier 5 is raised from zero to the pressure value P5.
  • FIG. 2 shows the pressure curve P as a function of the time t, that is to say the pressure values P4, P5 over the time t, with which the nozzle bars 2, 3 are acted on during the switching by the pressure suppliers 4, 5. Simplified are currently indicated pressure gradients over time. The more detailed relationship is explained below.
  • FIG. 3 describes an embodiment of the invention in which nozzle bars D1-D12 are arranged as processing stations in a total of four groups.
  • the nozzle bars D1 - D12 are assigned in principle to indicated circulating conveyor belts or needling drums. The path of the material to be processed is not shown.
  • the nozzle bars D1, D4, D5, D7, D8, D9, D10, D11 in the stations are each connected to their own controllable high-pressure pump HD1, HD4, HD5, HD7, HD8, HD9, HD10, HD11. These nozzle bars D1, D4, D5, D7, D8, D9, D10, D11 are in operation during production and are charged according to the intended production method.
  • the nozzle bars D2, D3, D6 and D12 are connected via switching valves V2, V3, V6 and V12 to a high-pressure pump HD as a pressure supply.
  • the high-pressure pump HD and the other high-pressure pumps HD1 - HD12 are in operative connection with a control, not shown, which controls the individual pumps both in production and for switching between nozzle bars.
  • these nozzle bars D2, D3, D6 and D12 connected to the central high-pressure pump are usually not in operation. If it is now desired to change the nozzle strip in one of the nozzle bars D1, D4, D5, D7, D8, D9, D10, D11, then the nozzle bar D2, D3, D6 or D12 present in the corresponding station is switched on.
  • the nozzle strip D8 has to be replaced by the nozzle strip.
  • the plant is in production, i. the nozzle bars D1, D4, D5, D7, D8, D9,
  • High-pressure pump HD started.
  • the high-pressure pump HD is now raised after opening the valve V6, ie the pressure for the nozzle bar D6 is continuously increased from zero to the pressure value with which the nozzle bar D8 was acted upon during operation.
  • the high-pressure pump HD8 of the nozzle beam D8 is steadily lowered from the initial value during operation to the value zero. hazards.
  • the admission of the material web takes place now instead of nozzle bar D8 by nozzle bar D6.
  • Wi 3600 * k * n * ( ⁇ * d 2/4 ) * ⁇ / (2 * g * p * 10)
  • Wi water flow per nozzle bar in m 3 / h (cubic meters per hour) and per meter working width (per meter of nozzle bar)
  • Ei hydraulic connection energy of the nozzle bar Di, expressed in kWh per meter working width (per meter of jet bar)
  • d diameter of a water jet or an outlet opening for a water jet in meters
  • n number of water jets per meter (number of outlet openings)
  • the hydraulic connection energy introduced by a plurality of nozzle bars Di into a material to be treated is thus:
  • the time function of the water pressure p2 (t) for the second nozzle bar D2 can thus be determined when the water pressure for the nozzle bar D1 is reduced after the time function p1 (t). Exactly then, the hydraulic energy introduced into the material (per unit time and given machine speed) remains constant.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

L'invention concerne un dispositif qui applique un fluide sous pression sur un matériau plat, le dispositif étant constitué de deux barres à tuyères, d'alimentations sous pression en amont des barres à tuyères ainsi que d'une commande reliée à l'alimentation en pression. L'invention prévoit d'associer à chacune des barres à tuyères (2, 3) une alimentation en pression (4, 5) asservie, la commande (6) permettant de modifier de manière prédéterminée la pression appliquée sur les barres à tuyères (2, 3) par les alimentations sous pression (4, 5) en vue d'une commutation entre les barres à tuyères (2, 3).
PCT/DE2009/000705 2008-05-27 2009-05-13 Dispositif d'application d'un fluide sous pression sur un matériau plat WO2009143809A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008025237.9 2008-05-27
DE200810025237 DE102008025237A1 (de) 2008-05-27 2008-05-27 Vorrichtung zur Beaufschlagung von flächigem Material mittels eines unter Druck stehenden Mediums

Publications (1)

Publication Number Publication Date
WO2009143809A1 true WO2009143809A1 (fr) 2009-12-03

Family

ID=41055182

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2009/000705 WO2009143809A1 (fr) 2008-05-27 2009-05-13 Dispositif d'application d'un fluide sous pression sur un matériau plat

Country Status (2)

Country Link
DE (1) DE102008025237A1 (fr)
WO (1) WO2009143809A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010009203A1 (de) * 2010-02-24 2011-08-25 Sandler AG, 95126 Verfahren und Vorrichtung zum Wechsel der Struktur bei der Herstellung wasserstrahlverfestiger, strukturierter Vliesstoffe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508308A (en) * 1962-07-06 1970-04-28 Du Pont Jet-treatment process for producing nonpatterned and line-entangled nonwoven fabrics
WO2002048441A2 (fr) * 2000-12-13 2002-06-20 Fleissner Gmbh & Co: Maschinenfabrik Procede d'application hydrodynamique de jets d'eau sur une bande de materiau et faisceau de buses conçu pour produire des jets de liquide
WO2002052083A2 (fr) * 2000-12-22 2002-07-04 Fleissner Gmbh & Co. Maschinenfabrik Procede hydrodynamique permettant d'exposer une bande eventuellement dotee de demi-produits finis, a des jets d'eau et dispositif a buses destine a la production de jets de liquide
WO2005061371A1 (fr) * 2003-12-11 2005-07-07 DTIC DISPENSING TECHNOLOGIES a division of STAINLESS STEEL COATINGS INC. Systeme de distribution de fluide a deux pompes

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10019342B3 (de) * 1999-07-16 2006-02-09 Sächsisches Textilforschungsinstitut e.V. Verfahren zur Verfestigung von Faser- und/oder Filamentvliesen
DE10008158A1 (de) * 2000-02-23 2001-08-30 Guenter Slowik Verfahren und Leitungssystem zur Zuführung von fluiden Stoffen zu einer oder mehreren Düsen
DE10008389A1 (de) * 2000-02-23 2001-08-30 Guenter Slowik Verfahren und Leitungssystem zur Beeinflussung des Tropfenspektrums von fluiden Stoffen bei deren Zerstäubung
DE10019930A1 (de) * 2000-04-20 2001-10-25 Hauni Maschinenbau Ag Einrichtung zum Auftragen von Leim auf ein Hüllmaterial eines stabförmigen Artikels der tabakverarbeitenden Industrie
DE10112446A1 (de) 2001-02-14 2002-08-29 Fleissner Gerold Verschließeinheit für den Düsenstreifen an einem Düsenbalken zur hydrodynamischen Vernadelung von Fasern einer Warenbahn
FR2836401B1 (fr) 2002-02-26 2004-12-17 Rieter Perfojet Dispositif de projection reguliere de jets d'eau s'appliquant notamment a une installation de liage de non tisses
DE102004030413A1 (de) 2004-06-23 2006-02-23 Fleissner Gmbh Vorrichtung zum hydrodynamischen Verschlingen der Fasern einer Faserbahn
DE102004049146A1 (de) 2004-10-07 2006-04-13 Fleissner Gmbh Wasservernadelungsvorrichtung
DE202006000947U1 (de) * 2006-01-21 2006-08-17 Kaushal, Christian Vorrichtung zum stufenlosen Verdüsen von Medien

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508308A (en) * 1962-07-06 1970-04-28 Du Pont Jet-treatment process for producing nonpatterned and line-entangled nonwoven fabrics
WO2002048441A2 (fr) * 2000-12-13 2002-06-20 Fleissner Gmbh & Co: Maschinenfabrik Procede d'application hydrodynamique de jets d'eau sur une bande de materiau et faisceau de buses conçu pour produire des jets de liquide
WO2002052083A2 (fr) * 2000-12-22 2002-07-04 Fleissner Gmbh & Co. Maschinenfabrik Procede hydrodynamique permettant d'exposer une bande eventuellement dotee de demi-produits finis, a des jets d'eau et dispositif a buses destine a la production de jets de liquide
WO2005061371A1 (fr) * 2003-12-11 2005-07-07 DTIC DISPENSING TECHNOLOGIES a division of STAINLESS STEEL COATINGS INC. Systeme de distribution de fluide a deux pompes

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Publication number Publication date
DE102008025237A1 (de) 2009-12-03

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