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EP0772705B1 - Vorrichtung zur herstellung von vliesstoffen wovon die kohäsion durch flüssigkeitsstrahl hergestellt ist - Google Patents

Vorrichtung zur herstellung von vliesstoffen wovon die kohäsion durch flüssigkeitsstrahl hergestellt ist Download PDF

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Publication number
EP0772705B1
EP0772705B1 EP96904126A EP96904126A EP0772705B1 EP 0772705 B1 EP0772705 B1 EP 0772705B1 EP 96904126 A EP96904126 A EP 96904126A EP 96904126 A EP96904126 A EP 96904126A EP 0772705 B1 EP0772705 B1 EP 0772705B1
Authority
EP
European Patent Office
Prior art keywords
web
cylinder
jets
water
perforated
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
EP96904126A
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English (en)
French (fr)
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EP0772705A1 (de
Inventor
André Vuillaume
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.)
ICBT Perfojet SA
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ICBT Perfojet SA
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 ICBT Perfojet SA filed Critical ICBT Perfojet SA
Priority to DE29623007U priority Critical patent/DE29623007U1/de
Publication of EP0772705A1 publication Critical patent/EP0772705A1/de
Application granted granted Critical
Publication of EP0772705B1 publication Critical patent/EP0772705B1/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

Definitions

  • the present invention relates to an improvement made to installations allowing the production of non-woven fibrous webs, the cohesion of which is obtained by intermingling of fibers in the thickness of said web thanks to the action of jets of fluid, and more particularly of jets of pressurized water.
  • Such technology has been widely developed these days and is used not only for making nonwoven fabrics for textile use, such as in particular for applications in the medical or hospital fields, wiping, filtration, envelopes for tea bags ..., but also for making tiny perforations in continuous supports, such as paper, cardboard, films, or even sheet of plastic or other material, the articles obtained possibly having hollow patterns or in relief as shown in particular from FR-A-2 068 676, FR-A-2 536 432, EP-A -0 400 249.
  • the installations proposed to date for carrying out a treatment on both sides of the basic product are of the type described in US Pat. No. 3,508,308 (see in particular FIGS. 7 and 8 and corresponding description ), and are designed so that the basic fibrous structure passes through a succession of actual interlacing zones each consisting of a rotary perforated cylinder associated with a plurality of injectors (three successive ramps for each rotary cylinder in the example illustrated) which make it possible to act first against one of the faces of the product, then, by means of detour provided between two successive cylinders, to act then on the reverse side and, possibly , to carry out a third treatment on the right side before drying and receiving the product produced.
  • the successive ramps are adjusted to different pressures depending on the articles to be produced, pressure generally between 30 and 100 bars or more.
  • nonwoven fibrous sheets which can be base of natural, synthetic fibers, alone or in mixture, or constituted by the association of nonwoven plies and internal reinforcement, such as textile grids, fabrics, knits, woven plies, longitudinal reinforcements ...
  • the installation in accordance with the invention not only makes it possible to adapt the treatment conditions much more easily to each type of textile structure, leads to surface appearances after the action of the fluid much more regular and above all allows, for equivalent articles, lead to reduced water consumption and a lower number of passages under the interlacing ramps.
  • the installation according to the invention also makes it possible to treat fibrous webs of a higher grammage than conventional installations where a series of successive interlacing treatments is carried out on each of the faces of the article.
  • fibrous webs have a weight greater than 100 g / m2, and in particular when they are made of low denier fibers, it has been observed that surface appearance defects are produced (raised and recessed areas) which makes them unsuitable for most applications.
  • the installation according to the invention comprises, in a known manner, means making it possible to compress, and introduce a fibrous sheet inside a treatment zone in which the moving sheet is subjected to the action of a succession of ramps of pressurized water jets which act alternately against the two faces of said sheet, said installation being characterized in that the interleaving means consist of at least one series of perforated cylinders , each cylinder being associated with a ramp (or injector) projecting jets of water under pressure against the surface of said sheet, said ramps being staggered from one treatment cylinder to the next, the jets acting perpendicularly against the surface of the processed product and the peripheral speed of the cylinders increasing slightly from one treatment cylinder to the next.
  • the installation comprises four superposed treatment rollers each associated with a ramp projecting jets of water under pressure against the surface of the material, the first cylinder if we consider the cycle of production being associated with means making it possible to ensure densification of the untreated basic fibrous web.
  • Such means for ensuring densification consist essentially of a porous endless conveyor belt which supports the material and which is in tangential abutment against the surface of the first rotary perforated cylinder inside which a partial vacuum is applied and which allows therefore compressing the base ply before it is subjected to the action of the first ramp of pressurized jets; in this embodiment, when the base ply is compressed between the conveyor belt and the rotary perforated cylinder, the said ply is wetted by means of a curtain of water, produced by means of an additional ramp disposed inside the volume defined by the conveyor belt, which is directed against the surface of the latter and which passes successively through said porous belt, the compressed sheet before being sucked through the perforated cylinder.
  • the installation according to the invention comprises, if one follows the direction of production of the article, means designated by the general reference (1) which allow to produce, compress and introduce a fibrous web (2) inside a treatment zone proper designated by the general reference (3), zone in which the moving web (2) is subjected to the action of '' a succession of ramps of pressurized water jets, ramps designated by the same reference (R) assigned an index and which act alternately against the two faces (N) and (S) of said ply (2), ply which, after treatment, is taken up by an evacuation assembly, designated by the general reference (4) where additional treatment may possibly be applied to it.
  • the general reference (1) which allow to produce, compress and introduce a fibrous web (2) inside a treatment zone proper designated by the general reference (3), zone in which the moving web (2) is subjected to the action of '' a succession of ramps of pressurized water jets, ramps designated by the same reference (R) assigned an index and which act alternately against the two faces (N) and (S) of said ply
  • all the perforated cylinders (C1, C2, C3, C4) of the treatment zone are mounted superimposed with respect to each other, each cylinder being associated with a ramp of injectors (R1, R2, R3, R4) projecting jets of water under pressure against the surface of the sheet (2), said ramps being staggered from one treatment roller to the next and the jets acting perpendicularly against the surface of the product to be treated.
  • the peripheral speed of the cylinders (C1, C2, C3, C4) is adjusted so that it gradually increases from one cylinder to the next in order to ensure the tensioning of the sheet during the various phases of the treatment.
  • Such a machine design therefore makes it possible to easily carry out an alternating treatment against the faces (S) and (N) of the product.
  • a second series of perforated cylinders (C5, C6, C7) associated with ramps (R5, R6, R7) is arranged in parallel and facing the first series.
  • This second series. ramps is not essential and possibly, it could be envisaged to receive the treated product immediately at the exit of the last interlacing treatment zone constituted by the cylinder (C4) and the ramp (R4).
  • Each treatment assembly (C) and ramp (R) has a structure as illustrated in FIG. 2.
  • the perforated cylinder (C) consists of a cylinder, preferably of stainless steel, having a diameter between 200 mm and 1000 mm, and is rotated by any suitable means so as to have a peripheral speed equal to the speed d entry of the material (2) into the installation. In general, this speed is between 10 m / min and 200m / min and the increase in speed from one cylinder to the next is of the order of 0.5 to 3%.
  • the perforations (10) that the cylinder has are cylindrical or honeycomb, said cylinder advantageously being covered with a fabric made of steel or plastic monofilament or of a perforated sheet having a porosity of between 3 and 20% (element not shown in Figure 2).
  • the ramp or injector (R) which is arranged parallel to a generator of the cylinder (C) is a conventional ramp making it possible to create jets or needles of water (11) with a usual pressure of at least 30 bars, sometimes more, so as to cause the elementary fibers of the web (2) to become entangled.
  • Such an injector can be designed in a similar manner to the teachings of EP-A-0 400 249.
  • a suction box (12) Inside the cylinder (C), there is a suction box (12), fixed, coaxial with the rotary cylinder (C), connected to a suction source making it possible to create a partial vacuum inside the latter.
  • This fixed suction box (12) has in the alignment of the water jets (11) a slot (13) of about 10 mm in width allowing the suction of the water which passes through the fibrous web and the perforated cylinder (10). .
  • the cylinder (C1) of the first processing assembly is designed not only to allow the interlacing operation as explained above, but also to cooperate in the compression of the ply ( 2) untreated before it is subjected to interlacing treatment.
  • the cylinder (C1) has a diameter which preferably is greater than the diameter of the other cylinders of the installation, and which is advantageously between 500 mm and 1000 mm.
  • This cylinder is in abutment against an endless porous conveyor belt (14), which allows the introduction of the sheet inside the treatment zone.
  • This porous support has a speed synchronized with that of the cylinder. It therefore allows compression of the ply (1) between the surface of the cylinder (C1) and its own surface before it is subjected to the action of the first ramp of high pressure jets (R1). It was found that it was advantageous during this operation of compressing the sheet, to make a wetting of the latter.
  • a ramp (15) creating a curtain of water under slight pressure acting through the porous support assembly (14) / compressed sheet (2) and perforated cylinder (1).
  • a second slot (16) is provided on the fixed suction box (12), and this opposite the water ramp. This discharge slot has a width of between 10 and 20 mm.
  • This mooring ramp forms a continuous curtain of water under slight pressure and is arranged opposite the porous support fabric (14) at a distance between 10 and 100 mm from said porous support.
  • the water pressure from these jets is between 3 and 15 bars, and preferably close to 3 to 8 bars. Below 3 bars, the curtain disperses too quickly and beyond 15 bars, the additional cost is not justified. It is important that the curtain of water from this first ramp acts perpendicularly to the moving base sheet which advances and compresses so as to wet it under optimal conditions.
  • the dried sheet (2) is received in a conventional manner at (4), for example by means of an endless conveyor belt (17).
  • the sheet (2) can undergo an additional treatment, for example a treatment making it possible to produce perforated patterns in the sheet by means of an assembly (16) of the type described in European patent 0 400 249.
  • a nonwoven web (2) based on polyester fibers is introduced having a titer of 3.3 dtex and a length of 38 mm, weighing 200 g / m2 and the thickness of which is 8 cm.
  • the speed of introduction of the sheet is 20 m / min.
  • This sheet is brought to the zone proper (3) by passing over a conveyor belt (14) having a porosity of 46%.
  • the sheet is compressed between the first rotary cylinder (13) and said conveyor belt and subjected to the action of a curtain of water produced by the ramp (15), the outlet of which is at a distance of 100 mm from the internal surface. of the conveyor belt (14).
  • the pressure of the water coming from the ramp (15) is adjusted to 10 bars.
  • the compressed sheet is then subjected to the action of the water jets from the ramps (R1, R2, R3, R4) which act alternately on the faces (N) and (S) of said sheet.
  • the four ramps (R1-R4) all produce 1250 jets per meter and are adjusted as follows.
  • Ramp order Jet diameter Pressure Cylinder speed in m / min R1: side N 140 ⁇ m 150 bars C1: 20m / min
  • R2: face S 140 ⁇ m 180 bars C2: 20.2m / min
  • R3: side N 140 ⁇ m 180 bars C3: 20.4m / min
  • the ply then passes directly over the receiving conveyor belt (4) without being treated in the second series of sets of perforated jets cylinders illustrated in FIG. 1.
  • the article treated under these conditions has similar mechanical characteristics, but it is found that a portion of the fibers redirected during treatment on the N side appear on the second side S which has a fluffy and not regular appearance.
  • the flatness of the article is less good than that of the article produced on a machine according to the invention.
  • the energy consumption necessary for binding is, in a machine produced in accordance with the invention, of the order of 0.65 Kwh per kilogram of nonwoven, while it amounts to 0.94 Kwh in the case of a conventional installation.
  • the installation according to the invention involves as many cylinders as treatment ramps, the latter however proving to be of a lower cost since for the production of similar articles, it requires a lower number of treatment ramps, lower water consumption with an energy saving of almost 50%, and this to obtain a better final result .
  • the invention is not limited to the embodiment described and illustrated, but covers all the variants produced in the same spirit, in particular those which would include perforated cylinders arranged parallel to each other provided that the ramps projecting the water jets act alternately against the two faces of the treated fibrous web and that the peripheral speed of the cylinders gradually increases from one treatment zone to the next.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (6)

  1. Vorrichtung zur Herstellung von Faserverbundstofflagen, deren Zusammenhalt durch die Einwirkung von Flüssigkeitsstrahlen erhalten wird, mit Mitteln (1), die es ermöglichen, eine faserige Lage (2) herzustellen, zu verdichten und in eine Behandlungszone (3) einzuführen, in der die laufende Lage (2) der Wirkung einer Folge an Sprüharmen mit unter Druck stehenden Wasserstrahlen ausgesetzt wird, die abwechselnd auf die beiden Seiten der Lage (2) einwirken, dadurch gekennzeichnet, daß die Mittel zum Ineinanderflechten aus zumindest einer Reihe an perforierten Zylindern (C1, C2, C3, C4) aufgebaut sind, wobei jeder Zylinder einem Sprüharm (R1, R2, R3, R4) zugehörig ist, der unter Druck Wasserstrahlen gegen die Außenseite der Lage (2) ausstößt, wobei die Sprüharme (R1, R2, R3, R4), von einem Behandlungszylinder zu dem diesem nachfolgenden gesehen, wechselseitig angeordnet sind, wobei die Strahlen rechtwinklig auf die Außenseite des zu behandelnden Produktes einwirken, und wobei sich die Umfangsgeschwindigkeit der Zylinder von einer Behandlungszone zur folgenden nach und nach erhöht.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die perforierten Zylinder (C1, C2, C3, C4) übereinanderliegend zueinander angeordnet sind.
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Erhöhung der Geschwindigkeit von einem Zylinder zum nachfolgenden zwischen 0,5 und 3 % liegt.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß, in Herstellungsrichtung gesehen, der erste Zylinder (C1) Mitteln zugehörig ist, die eine Verdichtung der Lage (2) ermöglichen.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Mittel, die die Verdichtung ermöglichen, aus einem porösen Endlostransportband (14) aufgebaut sind, das das Material stützt, und das tangential gegen die Außenseite des ersten perforierten drehenden Zylinders (C1) angelegt ist, wobei im Inneren des letzteren ein Teilvakuum angelegt wird, wodurch es möglich ist, die Basislage, bevor sie der Wirkung des ersten Armes mit unter Druck stehenden Strahlen ausgesetzt wird, zu verdichten, wobei das Benetzen der Lage mittels einer Wasserwand bewerkstelligt wird, die mittels eines zusätzlichen Armes (15) erzeugt wird, aer im Inneren des Raumes angeordnet ist, der durch das Transportband (14) umgrenzt ist, wobei die Wasserwand gegen die Fläche des Bandes gerichtet ist und dieses nach und nach durchquert, und daß die verdichtete Lage durch den perforierten Zylinder (C1) hindurch angesaugt wird.
  6. Vorrichtung nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß diese einen zweiten Zusammenbau an übereinander angeordneten perforierten Zylindern (C5, C6, C7) und Injektoren (R5, R6, R7) aufweist, die gegenüberliegend zur ersten Reihe der Behandlungselemente angeordnet sind.
EP96904126A 1995-03-02 1996-02-13 Vorrichtung zur herstellung von vliesstoffen wovon die kohäsion durch flüssigkeitsstrahl hergestellt ist Expired - Lifetime EP0772705B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29623007U DE29623007U1 (de) 1995-03-02 1996-02-13 Vorrichtung zum Herstellen nicht-gewebter Tücher, deren Zusammenhalt durch die Einwirkung von Flüssigkeitsstrahlen erzeugt wird

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9502665A FR2731236B1 (fr) 1995-03-02 1995-03-02 Installation pour la realisation de nappes non tissees dont la cohesion est obtenue par l'action de jets de fluide
FR9502665 1995-03-02
PCT/FR1996/000227 WO1996027040A1 (fr) 1995-03-02 1996-02-13 Installation pour la realisation de nappes non tissees dont la cohesion est obtenue par l'action de jets de fluide

Publications (2)

Publication Number Publication Date
EP0772705A1 EP0772705A1 (de) 1997-05-14
EP0772705B1 true EP0772705B1 (de) 1997-09-24

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EP96904126A Expired - Lifetime EP0772705B1 (de) 1995-03-02 1996-02-13 Vorrichtung zur herstellung von vliesstoffen wovon die kohäsion durch flüssigkeitsstrahl hergestellt ist

Country Status (8)

Country Link
US (1) US5727292A (de)
EP (1) EP0772705B1 (de)
JP (1) JPH09512596A (de)
AT (1) ATE158619T1 (de)
DE (2) DE772705T1 (de)
ES (1) ES2100147T3 (de)
FR (1) FR2731236B1 (de)
WO (1) WO1996027040A1 (de)

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FR2802553B1 (fr) * 1999-12-17 2002-01-04 Icbt Perfojet Sa Dispositif pour le traitement de materiaux en feuille au moyen de jets d'eau sous pression
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DE19852717A1 (de) * 1998-11-16 2000-05-18 Fleissner Maschf Gmbh Co Vorrichtung zur Herstellung von perforierten Vliesstoffen mittels hydrodynamischer Vernadelung
DE19925703A1 (de) * 1999-06-06 2000-12-07 Fleissner Maschf Gmbh Co Absaugeinrichtung an einer Textilmaschine wie insbesondere Wasservernadelungsmaschine
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DE10018920A1 (de) * 2000-04-17 2001-10-18 Fleissner Gerold Absaugeinrichtung an einer Textilmaschine wie insbesondere Wasservernadelungseinrichtung
EP1332250A2 (de) * 2000-11-08 2003-08-06 Milliken & Company Wasserstrahlbeaufschlagung von bemusterten geweben
US6668435B2 (en) 2001-01-09 2003-12-30 Milliken & Company Loop pile fabrics and methods for making same
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FR2861750B1 (fr) * 2003-10-31 2006-02-24 Rieter Perfojet Machine de production d'un nontisse fini.
DE102004006373B4 (de) * 2004-02-09 2014-12-31 Reifenhäuser GmbH & Co Maschinenfabrik Verfahren zur Herstellung eines Spinnvlieses aus Filamenten
DE102005034821A1 (de) * 2005-07-26 2007-02-08 Fleissner Gmbh Voluminöse Faserlaminate und ihre Herstellung
US20070056674A1 (en) * 2005-09-12 2007-03-15 Sellars Absorbent Materials, Inc. Method and device for making towel, tissue, and wipers on an air carding or air lay line utilizing hydrogen bonds
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Also Published As

Publication number Publication date
FR2731236B1 (fr) 1997-04-11
DE69600069T2 (de) 1998-02-05
ATE158619T1 (de) 1997-10-15
ES2100147T1 (es) 1997-06-16
DE69600069D1 (de) 1997-10-30
JPH09512596A (ja) 1997-12-16
WO1996027040A1 (fr) 1996-09-06
ES2100147T3 (es) 1997-12-16
US5727292A (en) 1998-03-17
FR2731236A1 (fr) 1996-09-06
EP0772705A1 (de) 1997-05-14
DE772705T1 (de) 1997-09-25

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