EP2065499A1 - Rampe de buses - Google Patents

Rampe de buses Download PDF

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Publication number
EP2065499A1
EP2065499A1 EP08161274A EP08161274A EP2065499A1 EP 2065499 A1 EP2065499 A1 EP 2065499A1 EP 08161274 A EP08161274 A EP 08161274A EP 08161274 A EP08161274 A EP 08161274A EP 2065499 A1 EP2065499 A1 EP 2065499A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
bore
zone
bore section
opening
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.)
Granted
Application number
EP08161274A
Other languages
German (de)
English (en)
Other versions
EP2065499B1 (fr
Inventor
Rudolf Rütten
Uwe Lambertz
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.)
Enka Tecnica GmbH
Original Assignee
Oerlikon Enka Tecnica 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 Oerlikon Enka Tecnica GmbH filed Critical Oerlikon Enka Tecnica GmbH
Publication of EP2065499A1 publication Critical patent/EP2065499A1/fr
Application granted granted Critical
Publication of EP2065499B1 publication Critical patent/EP2065499B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/20—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3402—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to avoid or to reduce turbulencies, e.g. comprising fluid flow straightening means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/027—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated

Definitions

  • the invention relates to a nozzle strip for generating fluid jets in a web consolidation according to the preamble of claim 1.
  • nonwoven webs formed by depositing a plurality of fibers it is known to consolidate the web in a further processing process to increase the integrity of the fibers within a fibrous web.
  • mechanical consolidation methods are used in which the fiber web is penetrated by additional means in order to entangle the fibers together.
  • fluid jet needling has recently gained importance as a solidification method.
  • columnar fluid jets are preferably generated under a high pressure of the water, which impinge substantially perpendicular to the fiber web and penetrate it.
  • the fluid jets in the point of impact lead to the compaction and turbulence of the fibers, so that surface structures form on the fibrous web.
  • the fluid used is preferably water, which is forced out of nozzle openings under high pressure and impinges with high energy in a radial manner on the fiber web and penetrates this to swirl the fiber.
  • the result of the turbulence is determined essentially by the nature of the water jet and its intensity. For example, it is known that the production of water jets with very high pressures of over 400 bar lead to better results of the strength of the web. However, such high pressures generally have the disadvantage that the signs of wear on the nozzle openings of the so-called nozzle strips increase.
  • the nozzle opening is formed by a nozzle bore in a metal plate, which consists of several bore sections.
  • nozzle bores are arranged in the nozzle bar in a row and held on an underside of a nozzle beam.
  • a nozzle bar is for example from the WO 2006/063112 A1 known.
  • the nozzle bores are each formed by two merging bore sections.
  • a first bore portion opening into an upper entrance surface forms a cylindrical capillary zone in which the fluid enters under high pressure and concentrates into a fluid jet.
  • an expansion zone for widening the fluid jet is provided in an immediately adjoining second bore section.
  • the expansion zone extends to an exit surface at the bottom of the nozzle bar.
  • the bore portion of the expansion zone is conically shaped so that an entry diameter at the entry surface widens steadily to an exit diameter at the exit surface.
  • Such nozzle shapes basically have the disadvantage that if the pressures are too low after the fluid jet has exited, there is the danger of the jet bursting.
  • Such diffuse fluid jets lead to irregularities in the fiber web, which manifests itself for example by a stiffness.
  • a nozzle bar for example from the WO 2005/123616 A2 known.
  • the nozzle openings are formed by a plurality of components, which are held together sealingly to form a nozzle opening.
  • a cylindrical nozzle bore containing the capillary zone forms for bundling the fluid jet.
  • a further cylindrical bore is arranged with a larger diameter, which is an expansion zone for expanding the fluid jet.
  • a diameter step is formed between the capillary zone and the expansion zone, which on the one hand causes turbulence and on the other hand causes pressure losses, which have a reduced impact energy of the fluid jet on the surface of the fibrous web.
  • Multi-part nozzle openings in nozzle strips are for example also from the DE 100 47 106 A1 and the US 6,668,436 B2 known.
  • inserts are used to produce a nozzle opening in a metal plate.
  • a plurality of cross-sectional shapes of the nozzle opening are formed between an inlet surface and an outlet surface, but with the disadvantage that at least one diameter step, which causes a cross-sectional enlargement or a cross-sectional constriction, is overcome.
  • the nozzle bar according to the invention is characterized in particular by the high free-jet quality of the fluid jets.
  • the good parallelism as well the relatively high impact forces of the fluid jets resulted in the same energy input compared to conventional nozzle strips to a significant increase in nonwoven.
  • the solidification effects that can be achieved by the fluid jets thus make it possible to produce strength structures in fibrous webs with the least possible expenditure of energy.
  • the high free-jet quality of the fluid jets produced also led to a uniform strength of the fiber web in the machine direction and in the transverse direction.
  • the invention has been solved by the proviso that the production of nozzle bores with more than two continuously merging into each other bore sections in nozzle strips with thin metal plates are not economically feasible.
  • the nozzle bores in the nozzle bar according to the invention are formed at least from three bore sections, which lead to a continuous change in cross section of the nozzle opening.
  • a first bore section opening into the entry surface forms a capillary zone for bundling the fluid jet.
  • a central bore portion includes the expansion zone for expanding the fluid jet, and a third bore portion opening into the exit surface forms an exit zone for guiding the fluid jet.
  • the development of the nozzle bar is preferably used, in which the bore portion of the outlet zone is cylindrical with an outlet diameter at the outlet surface, which outlet diameter in the ratio by a factor of at least 2.5 to a maximum of 5.0 greater than an inlet diameter of the capillary zone at the entrance surface.
  • the ratio of the area between an inlet cross-section and an outlet cross-section makes it possible to essentially determine the conversion of the pressure energy into a kinetic energy.
  • the ratio between the outlet diameter and the inlet diameter in the range of 2.5 to max. 5.0 proven to be particularly useful.
  • the bore portion of the exit zone is slightly conical with an opening angle ⁇ 3 °, wherein an exit diameter at the exit surface is greater than an extension diameter formed at the end of the expansion zone.
  • the bore portion of the capillary zone is made cylindrical with the inlet diameter at the entry surface and the bore portion of the expansion zone is conical with an opening angle in the range of 8 ° to 15 ° to extend the inlet diameter. This makes it possible to realize very smooth transitions between the bore sections, which avoid the occurrence of turbulent flows.
  • the bore section of the expansion zone can also be advantageously formed by a plurality of conical regions, wherein the conical regions have different opening angles.
  • the opening angle of the area adjoining the capillary zone could be greater than the opening angle of subsequent areas of the expansion zone.
  • the bore section of the capillary zone is formed with a length which forms a ratio of 1 / d in the range of 1 to 1.5 with the inlet diameter according to an advantageous development of the nozzle strip according to the invention.
  • the bore section of the exit zone for guiding the fluid jet has a greater length, so that the length of the exit zone with the length of the capillary zone forms a ratio of> 1.
  • the inventive design of the nozzle bar with metal plates executable having a thickness of 1 mm to 5 mm between the entrance surface and the exit surface.
  • the best results in the production of water jet and in the production of the nozzle bores has been found particularly in the metal plates with a thickness in the range of 1.5 mm to 3 mm.
  • the nozzle openings can be arranged on the metal plate in a row or in several rows next to each other.
  • the pitches between the nozzle openings in the range of 0.5 mm to 2.5 mm can be performed.
  • the device according to the invention for strengthening a fiber web according to the features of claim 11 is particularly suitable for generating parallel and highly efficient fluid jets for hydrodynamic swirling of fiber webs.
  • the device has a nozzle bar which has at least one nozzle bar according to the invention on a lower side.
  • Such devices for consolidating a fiber web are used with different working widths to solidify a spunbond fiber web.
  • nozzle bars are used one after the other in the production direction in order to solidify a fibrous web with fluid jets.
  • the fluid is preferably supplied to the nozzle bar at a process pressure of preferably 40 to 200 bar or above.
  • FIG. 1 shows the Ausfiihrungsbeispiel in a plan view
  • Fig. 2 shows the embodiment schematically in a section of a cross-sectional view.
  • the nozzle strip 1 consists of a strip-shaped metal plate 2, which may extend over several meters depending on the working width of the device for solidifying a fiber web. For example, when bonding nonwovens, working widths of several meters are realized.
  • the metal plate on a fixing opening 4 for handling, which could be used, for example, for fixing to a bottom of a nozzle beam.
  • the metal plate 2 is penetrated by a plurality of nozzle openings 3.
  • the nozzle openings 3 are formed next to one another in a row-shaped arrangement and extend over the length of the working width. In principle, such nozzle openings 3 can also be arranged in several rows.
  • Each of the nozzle openings 3 is formed by a nozzle bore 5 with a plurality of bore sections 6.1, 6.2 and 6.3.
  • Fig. 2 is a section of a cross-sectional view with two juxtaposed nozzle bores 5 is shown schematically.
  • the metal plate 2 is bounded by an upper entrance surface 10 and by a lower exit surface 11.
  • the nozzle bore 5 of one of the nozzle openings 3 extends from the entry surface 10 to the exit surface 11.
  • the entry surface 11 opens into a first bore section 6.1.
  • the bore section 6.1 constitutes within the nozzle bore 5 a capillary zone 7, in which a fluid coming from the inlet surface 10 is bundled into a fluid jet.
  • the bore section 6.1 of the capillary zone 7 is cylindrical and forms at the inlet surface 11 the inlet diameter d of the nozzle opening 3.
  • the first bore section 6.1 is followed by a second bore section 6.2, which is formed in the middle region of the metal plate 2.
  • the bore section 6.2 is embodied within the nozzle bore 5 as an expansion zone 8 for widening the fluid jet.
  • the bore section 6.2 of the expansion zone 8 is for this purpose designed conically with an opening angle ⁇ for widening the inlet diameter d.
  • a continuous expansion of the flow cross-section determined by the inlet diameter d is thus achieved so that the fluid jet guided in the nozzle bore 5 widens.
  • the second bore section 6.2 is followed by a third bore section 6.3, which opens into the outlet surface 11 and forms an outlet zone 9 for guiding the fluid jet.
  • the bore section 6.3 of the outlet zone 9 is designed to be cylindrical with an outlet diameter D of the nozzle opening 3 on the outlet surface 11.
  • the first bore section 6.1 extends over a length 1.
  • the exit diameter D of the exit zone 9 at the exit face 11 may not be too large in relation to the entry diameter d of the capillary zone 7, since otherwise the fluid jets have too low a kinetic energy.
  • the ratio between the exit diameter D and the entrance diameter d of D / d 2.5 to 5.0 proved to be particularly effective.
  • the length L of the exit zone is preferably set larger than the length 1 of the capillary zone. 7
  • the expansion of the fluid jet in the expansion zone 8 takes place through an opening angle ⁇ of 8 ° to 15 °. In principle, larger or smaller opening angles can be realized.
  • the nozzle openings 3 with different pitches can be formed side by side in a row arrangement.
  • narrow pitch distances are preferably realized, which can be up to 0.5 mm depending on the outlet diameter of the nozzle openings. Due to the improved utilization of the pressure energy in the fluid jets still high strengths in a fiber web can be achieved even with larger pitches of up to 2.5 mm.
  • the pitch is in Fig. 2 indicated by the capital letter T, and represents the distance of the centers of the nozzle openings.
  • the nozzle bar according to the invention is characterized in particular by the fact that with low Energy input already high solidification results can be realized in a fiber web.
  • a further embodiment of the nozzle bar according to the invention is shown.
  • the nozzle bar is shown as a section of a cross-sectional view.
  • the embodiment according to Fig. 3 is essentially identical to the embodiment according to Fig. 1 and 2 , so that only the differences are explained here.
  • the central bore section 6.2 of the nozzle bore 5 is divided into a plurality of conical regions.
  • a first conical region 12.1 in this case adjoins directly to the bore section 6.1 of the capillary zone 7.
  • the conical region 12.1 of the bore section 6.2 is formed with an opening angle ⁇ 1 .
  • the first conical region 12.1 merges into a second conical region 12.2, which is formed by an opening angle ⁇ 2 .
  • the second conical region 12.2 extends to the end of the bore section 6.2 and continuously merges into the third bore section 6.3 of the exit zone 9.
  • the opening angle ⁇ 1 of the first conical region 12.1 is formed larger than the subsequent conical region 12.2 with the opening angle ⁇ 2nd
  • the bore section 6.2 in the first conical region 12.1 could have an opening angle of, for example, 24 °, so that in a relatively short inlet of the second bore section 6.2 a larger expansion effect on the fluid jet is produced.
  • the subsequent conical region 12.2 would then preferably receive an opening angle in the range of 8 ° to 15 °.
  • a further embodiment of a nozzle bar according to the invention is shown schematically in a section of a cross-sectional view.
  • the embodiment according to Fig. 4 is also substantially identical to the embodiment of FIG Fig. 1 and 2 , so that only the differences will be explained subsequently and otherwise reference is made to the above description.
  • the nozzle orifices 3 are also formed by a nozzle bore 5 with a total of three bore sections 6.1, 6.2 and 6.3.
  • the bore sections 6.1 and 6.2 are identical to the exemplary embodiment according to FIG Fig. 1 and 2 executed.
  • the exit zone 9 forming third bore section 6.3 of the nozzle bore 5 is not cylindrical in this embodiment.
  • the bore section 6.3 is slightly conical with a small opening angle ⁇ .
  • the opening angle ⁇ is preferably small in the range ⁇ 3 °, in order to obtain in particular a sufficient guidance of the fluid jets in the outlet zone 9.
  • the exit diameter D formed from the exit surface 11 of the nozzle opening 3 is greater than an extension diameter D E formed at the end of the second bore section 6.2.
  • the opening angle in the third bore section 6.3 is substantially smaller in relation to the opening angle of the second bore section 6.2 in order to obtain as possible the guidance acting on the fluid jet through the exit zone 9 and to counteract the widening produced by the expansion zone.
  • FIG. 5 an embodiment of the inventive device for solidifying a running fiber web is shown schematically in a view.
  • the exemplary embodiment has a guide means 13 for guiding a fiber web 15.
  • the guide means 13 consists of a screen belt 16, which is preferably formed as an endless belt and is driven by a belt drive 17 at a predetermined belt speed.
  • the screen belt 16 is designed to be air or water permeable.
  • On the surface of the screen belt 16 is formed from a plurality of deposited fibers fiber web 15th
  • a nozzle bar 14 is arranged above the guide means 13 with a small distance to the fiber web 15.
  • the nozzle bar 2 extends substantially transversely across the width of the fiber web 15.
  • the nozzle bar 14 is preferably kept movable and is reciprocated by a drive, not shown here, with a predetermined amplitude. In this case, the nozzle bar 14 moves substantially transversely to the direction of the fiber web 15th
  • a nozzle bar 1 On the underside of the nozzle bar 14, a nozzle bar 1 is held with a plurality of nozzle openings in a row arrangement at a distance from each other. Each of the nozzle openings of the nozzle bar 1 is connected via a pressure chamber, not shown here, with a fluid inlet 19. Via the fluid inlet 19, a fluid is preferably supplied to the nozzle bar 14, a water which is held at a high pressure in a pressure chamber within the nozzle bar 14 and discharged via the nozzle openings of the nozzle bar 1 as a plurality of fluid jets.
  • the fluid jets emerging from the nozzle openings on the underside of the nozzle bar 14 are provided with the reference numeral 18.
  • the in Fig. 5 shown device continuously penetrated a running fiber web 14 by a plurality of fluid jets. In this case, turbulences and entanglements of the individual fiber strands occur, which improve the cohesion of the fibers and thus lead to an increase in the tensile strength of the fiber web 15.
  • the nozzle bar according to the invention Due to the efficient fluid jets that can be generated conditionally by the nozzle bar according to the invention, a uniform distribution of the tensile strength both in the longitudinal direction, which is also referred to as machine direction (MD), and in the transverse direction, which is also referred to as CD direction, could be achieved.
  • MD machine direction
  • CD direction transverse direction
  • the device according to the invention is so far particularly suitable for solidifying high-quality fiber webs. Furthermore, energy savings can be realized with the device according to the invention to produce standard strengths in fiber webs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
EP08161274A 2007-12-01 2008-07-28 Rampe de buses Expired - Fee Related EP2065499B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007057918 2007-12-01

Publications (2)

Publication Number Publication Date
EP2065499A1 true EP2065499A1 (fr) 2009-06-03
EP2065499B1 EP2065499B1 (fr) 2010-11-10

Family

ID=39869315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08161274A Expired - Fee Related EP2065499B1 (fr) 2007-12-01 2008-07-28 Rampe de buses

Country Status (3)

Country Link
EP (1) EP2065499B1 (fr)
CN (1) CN101444766A (fr)
DE (2) DE502008001754D1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010056263A1 (de) * 2010-12-24 2012-06-28 Eisenmann Ag Vorrichtung und Verfahren zum Beschichten eines Gegenstandes mit einem Medium
DE202014101647U1 (de) 2014-04-08 2015-07-09 Autefa Solutions Germany Gmbh Düsenbalken
CN105413897A (zh) * 2015-12-30 2016-03-23 上海领势新能源科技有限公司 一种可实现曲线喷射的喷嘴
EP3205762B1 (fr) * 2016-02-11 2018-04-25 Groz-Beckert KG Rampe de buses pour une machine de traitement du textile
CN110904517A (zh) * 2018-09-14 2020-03-24 厦门当盛新材料有限公司 一种喷嘴及设有该喷嘴的闪蒸法纺丝设备
DE102022124763A1 (de) * 2022-09-27 2024-03-28 Khs Gmbh Düse mit konischem Strömungskanal

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4055306A (en) * 1976-07-19 1977-10-25 Rain Jet Corporation Liquid spray nozzle having a randomly directionally unstable discharge characteristic
GB2106013A (en) * 1981-09-18 1983-04-07 Butterworth System Inc A nozzle for a tank cleaning machine
DE10047106A1 (de) 2000-09-21 2002-04-11 Fleissner Gerold Düsenkörper zur Erzeugung von feinsten Flüssigkeitsstrahlen an Wasservernadelungseinrichtungen
US20020179744A1 (en) * 1999-12-17 2002-12-05 Rieter Perfojet Device for treating sheet-like material using pressurized water jets
WO2005123616A2 (fr) 2004-06-10 2005-12-29 North Carolina State Universtiy Bande de buses composite d'hydroenchevetrement et procede de production de tissus non tisses l'utilisant
WO2006063112A1 (fr) 2004-12-09 2006-06-15 North Carolina State University Dispositif a bande de projection d'eau pour hydroenchevetrement definissant un orifice
DE102006057367A1 (de) * 2006-12-04 2008-06-05 Fleissner Gmbh Absaugkammer für einen Wasserbalken zur Strahlbeaufschlagung von Geweben

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4055306A (en) * 1976-07-19 1977-10-25 Rain Jet Corporation Liquid spray nozzle having a randomly directionally unstable discharge characteristic
GB2106013A (en) * 1981-09-18 1983-04-07 Butterworth System Inc A nozzle for a tank cleaning machine
US6668436B2 (en) 1996-12-17 2003-12-30 Rieter Perfojet Device for treating sheet-like material using pressurized water jets
US20020179744A1 (en) * 1999-12-17 2002-12-05 Rieter Perfojet Device for treating sheet-like material using pressurized water jets
DE10047106A1 (de) 2000-09-21 2002-04-11 Fleissner Gerold Düsenkörper zur Erzeugung von feinsten Flüssigkeitsstrahlen an Wasservernadelungseinrichtungen
WO2005123616A2 (fr) 2004-06-10 2005-12-29 North Carolina State Universtiy Bande de buses composite d'hydroenchevetrement et procede de production de tissus non tisses l'utilisant
WO2006063112A1 (fr) 2004-12-09 2006-06-15 North Carolina State University Dispositif a bande de projection d'eau pour hydroenchevetrement definissant un orifice
DE102006057367A1 (de) * 2006-12-04 2008-06-05 Fleissner Gmbh Absaugkammer für einen Wasserbalken zur Strahlbeaufschlagung von Geweben
WO2008067790A1 (fr) * 2006-12-04 2008-06-12 Fleissner Gmbh Chambre d'aspiration pour une rampe de jets d'eau destinée au traitement de tissus par jets

Non-Patent Citations (1)

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Title
WANG C ET AL: "Effect of nozzle geometry on the flow dynamics of hydroentangling jet", JOURNAL OF INDUSTRIAL TEXTILES, TECHNOMIC PUB. CO., LANCASTER, PA, US, vol. 37, no. 1, 1 January 2007 (2007-01-01), pages 79 - 89, XP009113129, ISSN: 1528-0837 *

Also Published As

Publication number Publication date
CN101444766A (zh) 2009-06-03
DE502008001754D1 (de) 2010-12-23
EP2065499B1 (fr) 2010-11-10
DE202008010204U1 (de) 2008-10-16

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