EP1493854B1 - Procédé et installation pour la formation de non-tissés - Google Patents

Procédé et installation pour la formation de non-tissés Download PDF

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Publication number
EP1493854B1
EP1493854B1 EP04013153A EP04013153A EP1493854B1 EP 1493854 B1 EP1493854 B1 EP 1493854B1 EP 04013153 A EP04013153 A EP 04013153A EP 04013153 A EP04013153 A EP 04013153A EP 1493854 B1 EP1493854 B1 EP 1493854B1
Authority
EP
European Patent Office
Prior art keywords
web
fibre
sieve belt
drum
speed
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 - Fee Related
Application number
EP04013153A
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German (de)
English (en)
Other versions
EP1493854A1 (fr
Inventor
Johann P. Dipl.-Ing. Dilo
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.)
Oskar Dilo Maschinenfabrik KG
Original Assignee
Oskar Dilo Maschinenfabrik KG
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 Oskar Dilo Maschinenfabrik KG filed Critical Oskar Dilo Maschinenfabrik KG
Publication of EP1493854A1 publication Critical patent/EP1493854A1/fr
Application granted granted Critical
Publication of EP1493854B1 publication Critical patent/EP1493854B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G25/00—Lap-forming devices not integral with machines specified above
    • 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
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)

Definitions

  • a multilayer nonwoven web hereafter referred to as a nonwoven fabric
  • a carded web removed from a carded web hereafter referred to as a batt
  • a cross-lapping machine on a substrate running endlessly transversely to the feed direction of the batt; is solidified by needling.
  • the felt or velor web produced by the needle machine has a non-uniform surface weight transversely to its direction. Its border area is thicker than its middle area.
  • the stretching of the card web creates a reorientation of fibers therein, with the result that the orientation of the fibers within the cross-laid nonwoven web varies transversely to the web direction, which in turn affects the stretch characteristics of the product made from the nonwoven web by needling. It creates areas in the finished product have the track properties that differ from those of other bodies. In general, however, finished products are desired, whose stretch properties are largely independent of the direction of stretch.
  • the invention has for its object to provide an apparatus and a method with which a transversely profiled nonwoven web can be produced, which has no disturbances of the fiber orientation.
  • the batt is formed by means of an aerodynamic pile generator.
  • Aerodynamic pile generators are already known, for example, from DE 101 44 728 A1.
  • the pile producer has facilities with the aid of which the Florabgabe is changeable during operation.
  • the aerodynamic pile generator places a batt that has no orientation, ie a baffle pile, on an air-permeable base.
  • the conveying speed can be regulated by means of a control unit.
  • the invention While aerofoil-making is commonly used to produce high basis weight webs of up to 400 g / m 2 which, because of this high basis weight, can be directly subjected to needling, water jet or thermobonding consolidation, the invention combines mechanical aerodynamic web production Web formation by crosslapping, for which purpose preferably thin webs with a basis weight of up to 20 g / m 2 down aerodynamically generated.
  • the random fiber pile is thus laid in a cross-lapper to a nonwoven web.
  • the special feature of the invention is that by appropriate control of Ab grind whatsoever the pad on which the pile is stored in the aerodynamic Florerzeugung, in the formed goal web thick and thin areas can be generated at regular intervals, these distances from the Spreading width depends on crosslapping.
  • By suitable adjustment of the crosslapper movement it is then possible in a known manner to ensure that the thin areas of the card web are deposited in the edge regions of the nonwoven web produced, so that the desired thickness profile of the nonwoven web, viewed in the transverse direction thereof, is achieved.
  • the cyclic variation in the basis weight of the aerodynamically generated card web required for the particular application, as described, is effected by changing the speed of the air-permeable underlay, preferably an endlessly circulating screen belt which receives the fibers fed onto it and the card web formed therefrom in the direction of the crosslapper removed.
  • the speed of the air-permeable underlay preferably an endlessly circulating screen belt which receives the fibers fed onto it and the card web formed therefrom in the direction of the crosslapper removed.
  • a card web which has thin areas which are at regular intervals from one another and which is suitable for producing a profiled nonwoven web.
  • the unoriented fiber layer is present both in the thick and in the thin areas of the card web.
  • the aerodynamic pile fabricator can be fed directly from a feeder because, due to its design, it also performs the function of a roll carding to some extent and in some cases allows the quality requirements to dispense with the use of a separate carding machine. In this connection it has already been mentioned that irregularities in the batt are compensated to some extent by the action of the crosslapper.
  • the aerodynamic pile producer is preferably supplied with fibers by a roll card. Despite the longitudinal orientation of the fibers in the carded web delivered by the carding machine and supplied to it, the pile producer then delivers a random fiber web because it completely dissolves the carded web into individual fibers which are then deposited aerodynamically without preferential direction on the air-permeable support.
  • a buffer can be used, which compensates for these time-varying speed differences.
  • the achievable with the invention advantages are many.
  • An important advantage over the prior art is that it produces a completely unoriented web that does not have any delinquency caused by warpage.
  • the web formation is possible in the simplest way. It may be possible to dispense with separate temporary storage to compensate for differences in speed between the units involved in web formation. Any fleece profile can be produced in the nonwoven web leaving the crosslapper, because only small machine masses have to be braked and accelerated for the purposes of profile formation.
  • the mass variation within the fiber web is greater because fiber mass can be built up. This is particularly well possible if no carding is used as a feeding device for the aerodynamic pile producer, but this is supplied directly from a feeder. If a card is provided as a provider for the aerodynamic pile producer, one can accumulate by reducing the transport speed of the screen belt on this fiber masses.
  • the core assembly K in the present invention shown in Fig. 1, a tangled fiber pile maker, comprises an all-steel garnishing roll 1 which faces a plurality of set covering grooves 2.
  • the Ganzstahlgarniturwalze 1 rotates at high speed, as shown in FIG. 1 in a clockwise direction.
  • the cover troughs 2 are intended to hold the fibers thereon during rotation of the all-steel garnishing roll 1.
  • the Ganzstahlgarniturwalze 1 faces the inlet side of a pair of feed rollers 3 and 4, which are also provided with Ganzstahlgarnituren and form between them or together with the Ganzstahigamiturwalze 1 each have a gap at the supplied fibers are transferred from one roller to the other.
  • the upstream of the feed rollers which is provided in Figure 1 by the reference numeral 4, is opposite to a Flormentsmulde 5, which forms with the periphery of the feed roller 4 in the direction of rotation of the feed roller 4 narrowing gap.
  • the drain-side deflection roller 6 of an endlessly circulating conveyor belt 7 is arranged, which is intended for feeding fiber material from a feeder (not shown in Fig. 1).
  • the Ganzstahlgarniturwalze 1 is in a region which is located in the direction of rotation of this roller 1 between the wells 2 and the feed roller 3, a scraper 8 opposite, below which there is an endlessly circulating belt 9, which is guided over a plurality of guide rollers 10 and 11.
  • a baffle 13 is to be mentioned, which is located in a sector between the wells 2 and the scraper 8 and defines a fiber flight channel extending from the Ganzstahlgarniturwalze 1 towards the portion of the upper run of the screen belt 9, which extends above the suction box 12 is located.
  • a pressure roller 14 which forms a gap with the wire 9.
  • the guide rollers 6 and 10 are marked as such in the drawing, which have an individual drive means. These drive devices are connected to a control unit 15, which is indicated in the drawing by corresponding connecting lines.
  • a fibrous material discharged from a feeder (not shown) or a carding machine (likewise not shown) and brought in via the feed belt 7 is introduced into the narrowing gap between the first feed roller 4 and the trough 5. Due to the all-steel set of the feed roller 4, the supplied fiber mass is made uniform. It is transferred from the first feed roller 4 of the adjacent and rotating in the opposite direction of rotation second feed roller 3 and thereby evened out. From the second feed roller 3, the fibers of the all-steel garnish roll 1 are transferred, which further uniformizes and separates the fiber mass and deposits the fibers with the aid of the skimmer 8 aerodynamically on the wire belt 9.
  • the upper run of the screen belt 9 is under-sucked by means of the pressure prevailing in the suction box 12 negative pressure, which favors the fiber deposit on the wire 9 and helps avoid flying fiber.
  • the fiber deposit on the screen belt 9 is completely undirected, i. the fibers within the pile formed on the wire 9 have no preferential orientation.
  • the pile formed on the sieve belt 9 is transported away from the sieve belt, which revolves endlessly, as a continuous card web.
  • FIG. 2 shows the application of this core unit K according to FIG. 1 in a device according to the invention for producing a fiber fleece.
  • the aforementioned Kemix K is located between a feeder 16 and a cross-lapper 17, to which the fiber web web produced on the wire 9 is fed.
  • the stacker is designed here as a vertical arm and will not be explained in detail.
  • the laying arm of the steep arm 17 performs a reciprocating movement above a discharge belt 18. In the region of the reversal points of the laying arm of the steep arm 17, the speed of the pile delivery to the draw-off belt 18 must be reduced because of the necessary braking of the laying arm in order to avoid unevenness of the pile deposit. The transfer of batt from the screen belt 9 to the pier arm 17 must therefore be adjusted accordingly.
  • the laying movement of the laying arm of the cross-stacker must be coordinated with the supply of the card web, taking into account the location of the thick and thin areas contained in it, if a particular cross-section of the laid nonwoven web is to be achieved.
  • the necessary facilities are known and therefore need not be explained here.
  • FIG. 3 shows a device comparable to FIG. 2, which is supplemented by a temporary store Z.
  • the buffer Z consists of an endlessly circulating second screen belt 19 and a storage roller 20, which is arranged between the first screen belt 9 and the second screen belt 19 and the first web 9 deposited on the web decreases therefrom and deflects to the underside of the second screen belt 19 to which the card web is sucked by a negative pressure, which prevails in a suction box 21 arranged between the two strands of the second wire 9.
  • the storage roller 20 is along the two sieve belts 9 and 19 movable and thus able to change the length of the located between the Kemix K and the stacker 17 Florbahnabterrorisms. An enlargement of this length causes a Florability, ie an intermediate storage, a reduction of a corresponding Florabgabe from the buffer Z.
  • the embodiment of FIG. 4 differs from the embodiment according to FIG. 2 in that between the feeder 16 and the core unit K a roll card W with two pickups and a buffer Z are arranged.
  • the roll card W has an upper pickup 22 and a lower pickup 23.
  • the lower pickup 23 lays the batt removed from the carding drum 24 of the roll carding W onto an endlessly circulating felt conveyor 25.
  • the upper picker 22 also places a batt on an endlessly circulating transfer belt 26 , which places the last-mentioned pile on the pile already on the pile transport belt 25, which originates from the lower taker 23. If a higher flange thickness is desired, more than two users, for example four customers, may also be present on the spooling mandrel 24.
  • the invention is not limited thereto.
  • the pile conveyor belt 25 is at the same time part of an intermediate store Z, to which a storage roll 20 belongs, which is arranged between the pile conveyor belt 25 and the intermediate storage Z and is movable along the pile conveyor belt 25 and the intermediate storage Z.
  • This storage roller 20 operates in the same manner as has been explained with reference to FIG.
  • the feed belt 7 On the outlet side of the buffer Z is the feed belt 7, which feeds the card web K lying on it.
  • the remaining elements of this arrangement are similar to those in the embodiments described above.
  • a fiber mass supplied from the reservoir 16 is converted by the roller card into a uniform nap which is taken in two layers from the upper and lower pickups 22 and 23 and laid on the nap conveyor belt 25.
  • the double-layered card web is fed via the buffer Z to the core unit K, where it is dissolved in the same manner as described with reference to FIG. 1, in individual fibers, which are deposited on the screen belt 9.
  • care can be taken that in the produced random fiber web thick and thin areas are generated.
  • the cross-stacker Since there is no buffer between the core web-forming core unit K and the cross-lapper 17, but on the other hand the cross-stacker has a time-varying pile requirement for the reasons mentioned, the fiber feed into the core unit K must be controlled in coordination with the pile requirement of the cross-leveler 17. This means that the feed into the core unit K must be varied over time.
  • the roll card W gives the two pile sheets which are superimposed on the pile transport belt 25 at a constant speed and thickness. The difference between this constant Florabgabe of the Walzenkrempel W and the Florability on the core unit K is compensated by the latch Z.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Nonwoven Fabrics (AREA)

Claims (7)

  1. Dispositif de fabrication d'une nappe de non-tissé, comprenant un dispositif (K) fonctionnant par voie aérodynamique pour fabriquer une nappe de voile de carde avec des endroits épais et minces alternant sur sa longueur, un hérisson à garniture tout acier (1), agencé pour décomposer en fibres individuelles du matériau fibreux qui lui est amené et pour le déposer par voie aérodynamique, une toile perforée (9) tournant sans fin, disposée et agencée pour recevoir des fibres individuelles amenées par voie aérodynamique pour constituer le voile de carde, un dispositif (15) par lequel la vitesse de rotation de la toile perforée (9) peut être modifiée par rapport à la vitesse d'alimentation du matériau fibreux amené au hérisson à garniture tout acier (1), et un distributeur en croix (17) disposé en aval de la toile perforée (9) pour recevoir et déposer en croix le voile de carde en un non-tissé.
  2. Dispositif suivant la revendication 1, caractérisé en ce que le dispositif (15) est un dispositif de commande pour une modification cyclique de la vitesse de rotation de la toile perforée (9) par rapport à la vitesse d'alimentation du matériau fibreux amené par le hérisson à garniture tout acier (1).
  3. Dispositif suivant l'une des revendications 1 et 2, caractérisé en ce que la toile perforée (9) fait partie d'un dispositif de stockage intermédiaire (Z).
  4. Dispositif suivant l'une des revendications 1 et 2, caractérisé en ce qu'un stock-tampon est disposé entre la toile perforée (9) et le distributeur en croix (17).
  5. Dispositif suivant l'une des revendications précédentes, caractérisé en ce qu'un dispositif de stockage intermédiaire (Z) est disposé en amont du hérisson à garniture tout acier (1).
  6. Dispositif suivant la revendication 5, caractérisé en ce qu'une carde à hérissons (W) est disposée en amont du dispositif de stockage intermédiaire (Z).
  7. Procédé de fabrication d'une nappe de non-tissé, dont les deux zones de bordure présentent une épaisseur plus faible par rapport au centre de la nappe, à partir d'une nappe de voile de carde qui présente sur sa longueur des endroits épais et minces en alternance et est déposée en se chevauchant partiellement en zigzag de sorte que ses endroits minces viennent se situer dans la zone de bordure de la nappe de non-tissé formée à partir de cette dernière, caractérisé en ce qu'un matériau fibreux envoyé dans un hérisson à garniture tout acier est décomposé par ce dernier en fibres individuelles et est déposé par voie aérodynamique, sous forme de voile, sur une toile perforée tournant sans fin, à partir de laquelle la nappe de voile formée sur la toile est envoyée pour le dépôt en nappe de non-tissé, et que la vitesse de rotation de la toile perforée est modifiée cycliquement par rapport à la vitesse d'alimentation du matériau fibreux envoyé dans le hérisson à garniture tout acier.
EP04013153A 2003-07-01 2004-06-03 Procédé et installation pour la formation de non-tissés Expired - Fee Related EP1493854B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10329648A DE10329648B4 (de) 2003-07-01 2003-07-01 Vorrichtung zur Vliesbildung
DE10329648 2003-07-01

Publications (2)

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EP1493854A1 EP1493854A1 (fr) 2005-01-05
EP1493854B1 true EP1493854B1 (fr) 2006-03-22

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EP04013153A Expired - Fee Related EP1493854B1 (fr) 2003-07-01 2004-06-03 Procédé et installation pour la formation de non-tissés

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EP (1) EP1493854B1 (fr)
AT (1) ATE321159T1 (fr)
DE (2) DE10329648B4 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009012819U1 (de) 2009-09-24 2011-02-10 Matecs Sp. Z.O.O. Anlage zur Herstellung von Faservliesmatten und damit hergestelltes Faservlies
DE102010034777A1 (de) * 2010-08-18 2012-02-23 Hubert Hergeth Vlieslegemaschine und Verfahren zum Legen eines Vlieses
CN102953233B (zh) * 2011-08-24 2019-01-08 休伯特·赫格思 借助刮刀的装置
DE202014100908U1 (de) * 2014-02-27 2015-05-28 Autefa Solutions Germany Gmbh Kardiereinrichtung
DE102015014301A1 (de) * 2015-11-06 2017-05-11 Hubert Hergeth Saugsammelband
CN106894117B (zh) * 2017-05-06 2021-04-23 青岛源泉机械有限公司 能够自动送料的平梳机
DE102017006235A1 (de) * 2017-07-03 2019-01-03 Hubert Hergeth Duale Vliesbildung
EP3450603B1 (fr) * 2017-09-01 2020-04-29 Oskar Dilo Maschinenfabrik KG Procédé de formation d'un non-tissé profilé
DE102019005550A1 (de) 2019-08-07 2021-02-11 Hubert Hergeth Saugwinkel
DE102021000424A1 (de) 2021-01-28 2022-07-28 Hubert Hergeth Andrückwalze

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3738190C2 (de) * 1987-11-10 1997-10-16 Autefa Holding Gmbh Verfahren zur Bildung eines Vlieses und Vliesbandleger
BE1002605A3 (fr) * 1988-11-30 1991-04-09 Houget Duesberg Bosson Procede et dispositif pour la fabrication de textiles non-tisses.
DE4010174A1 (de) * 1990-03-30 1991-10-02 Hollingsworth Gmbh Verfahren zum ablegen eines vlieses oder dgl., sowie vliesbandleger
DE4304988C1 (de) * 1993-02-18 1994-04-07 Autefa Maschinenfab Verfahren und Vorrichtung zur Herstellung eines Vlieses mit veränderlicher Dicke
DE19527416C2 (de) * 1995-07-27 1998-06-04 Autefa Maschinenfab Verfahren und Vorrichtung zur Bildung eines mehrlagigen Faser-Vlieses
FR2770855B1 (fr) * 1997-11-07 2000-01-28 Asselin Procede et dispositif pour produire une nappe textile
FR2794475B1 (fr) * 1999-06-01 2001-08-17 Asselin Procede pour reguler le profil d'une nappe non-tissee et installation de production s'y rapportant
EP1381721B1 (fr) * 2001-04-23 2006-06-07 AUTEFA automation GmbH Procede pour profiler un non-tisse et dispositif de formation de profils
DE10144728A1 (de) * 2001-06-27 2003-01-16 Ake Innotech Gmbh Automatisier Doppelkopfvliesmaschine zur grenzschichtfreien aerodynamischen Mischvliesbildung
DE10139833A1 (de) * 2001-08-14 2003-02-27 Dilo Kg Maschf Oskar Verfahren und Vorrichtung zum Herstellen eines Faservlieses
DE20113467U1 (de) * 2001-08-14 2002-12-19 Dilo Kg Maschf Oskar Streckwerk und Vorrichtung zum Herstellen eines Faservlieses

Also Published As

Publication number Publication date
DE10329648B4 (de) 2005-06-16
EP1493854A1 (fr) 2005-01-05
DE502004000367D1 (de) 2006-05-11
DE10329648A1 (de) 2005-01-27
ATE321159T1 (de) 2006-04-15

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