EP1644565B1 - Procede de consolidation d'une bande de non-tisse par aiguilletage - Google Patents

Procede de consolidation d'une bande de non-tisse par aiguilletage Download PDF

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Publication number
EP1644565B1
EP1644565B1 EP04764967A EP04764967A EP1644565B1 EP 1644565 B1 EP1644565 B1 EP 1644565B1 EP 04764967 A EP04764967 A EP 04764967A EP 04764967 A EP04764967 A EP 04764967A EP 1644565 B1 EP1644565 B1 EP 1644565B1
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EP
European Patent Office
Prior art keywords
web
needles
needle
needling
stitching
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EP04764967A
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German (de)
English (en)
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EP1644565A1 (fr
Inventor
Johann Philipp Dilo
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Oskar Dilo Maschinenfabrik KG
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Oskar Dilo Maschinenfabrik KG
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    • 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
    • D04H18/02—Needling machines with needles
    • 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
    • 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

Definitions

  • Thin fiber batt and nonwoven fabric of the aforementioned type are very sensitive before their solidification. They easily lose their cohesion even at low mechanical stress and tear. Their processing in needle machines is therefore very delicate, which is why a reduction in the basis weight of the needled products were previously set relatively high limits that did not meet the wishes of users.
  • the sensitivity of the machined material also meant that the working speeds were very low and the nonwoven web had to be processed in a very large number of steps in order to obtain the necessary number of needle punctures per unit area of the product for solidification, resulting in a correspondingly low productivity.
  • the invention is therefore based on the object of specifying a method and a device with which a gentle processing of fiber webs and fiber webs is possible, which makes it possible to produce very thin and lightweight needled products.
  • the invention provides a method for solidifying a textile material web of a batt or non-woven fabric by needling in a plurality of immediately successive steps, in which the material web in each case needled alternately from both sides and in the material web pierced state of the needles exclusively is moved by a running in the longitudinal direction of the web movement of the needles.
  • each needle now only takes up a single fiber of a stitch of 1-2 dtex during its insertion movement.
  • the invention achieved by the use of a high needle density already at the individual needling steps high productivity.
  • needle boards of, for example, 350 to 400 mm width
  • the pitch of the needles is then for example about 3 mm or less, which necessitates the use of small diameter special needles.
  • the production speed can reach 200 m / min with working widths of up to 6 m, just to give examples. It can thus produce lightweight products with a weight per unit area of up to 10 g / m 2 , for example, from a single carding board.
  • the fibers can be very fine down to about 1 dtex. Also fiber fibrils of less than 1 dtex are processable.
  • the puncture densities are, for example, about 2,500 per cm 2 , but may possibly be even higher.
  • the nonwoven web of six needle boards must be needled on both sides in order to achieve said stitch density.
  • the processing of even such lightweight products is possible by the measures according to the invention, according to which the material web is advanced in the pierced state of the needles within the needle machine exclusively by a longitudinal movement of the web extending movement of the needles. Because the needles of the two needle assemblies, which are combined in a double needle machine, in the invention alternately pierce the nonwoven web, ie the working cycles of these needle assemblies are offset by 180 ° from each other, there is an almost continuous transport of the nonwoven web through the needle machine through solely by the effect the needles. Furthermore, this mode allows a dense placement of the needle boards, since the needles of two opposing needle boards from home can not collide with each other.
  • a change in length of the material web may occur during operation of the needling machines due to the individual needling processes.
  • the feed rates with which the individual needling machines transport the material web must be adapted to each other in a suitable manner.
  • the adjustment of the feeds can be made by changing the stitch frequencies of the individual needle machines. This solution is particularly useful when horizontal stroke and vertical stroke of the needle bar are firmly coupled together.
  • the co-movement of the needles with the material web in the inserted into this state of the needles is already known from DE 196 15 697 A1. It has the goal there, a disturbance of the surface of the web, which could be caused by a delay when the transport speed of the fibrous web through the needle machine is high, to avoid.
  • the speed of the horizontal drive component of the needle bar is adapted to the conveying speed with which the material web of feeding and withdrawal devices is moved by the needle machine.
  • the present invention utilizes the oscillating component of movement of the needles running in the longitudinal direction of the material web to actively transport the material web without the need for other transport devices.
  • the fibers may, for example, be cotton fibers, with staple lengths of 20 mm to 40 mm being considered. Endless fibers of spunbonded nonwovens, smooth fibers and textured fibers may also form the material webs which can be processed by means of the invention.
  • needles When processing the material webs, needles are used whose notches are so fine that they grip only a single fiber of a thickness of 1-2 dtex.
  • a needle has a shaft diameter of 1.85 mm and reduces its diameter over its length to 0.5 mm in two steps.
  • the notch depth of the needles is 0.02 mm and preferably only one notch is formed on one edge of the needle. Because only a single fiber is pushed into the fleece by the needle and the needle has an extremely small diameter, no puncture holes remain visible. Therefore, and because of the high puncture density, a mark-free surface of the needle-punched product with high abrasion resistance is obtained.
  • the spacing of the notches from the needle tip should preferably be small in order to work with a small needle stroke.
  • a preferred distance between notch and needle tip is for example 2 mm.
  • a small needle stroke allows for higher working speeds. It can also be used with fork needles, crown needles or wreath needles, for example, with fork widths and depths of 2/100 mm.
  • the needles can have standard lengths of 2.5, 3 or 3.5 inches, but may also be shorter, which benefits their stability and weight reduction. A weight reduction advantageously further contributes when the needles are made of plastic.
  • One as small as possible Diameter of the needle shaft improves the strength of the needle board, because then remains at the same Nadelbe Publishedungs Why more board material.
  • a hold-down plate can be realized, on the one hand has a small thickness in the slot area and is accordingly less prone to blockages by fiber fly, on the other hand, has a high stability with low weight.
  • This hold-down device can also be used conversely with lamellas directed against the nonwoven web to be needled, but also vice versa, if necessary. Such a hold-down comes against the fact that due to the small needle shank diameter, the needles are more prone to bending than thick needles.
  • a lame-on hold-down facilitates threading the needle into the slits of the slat bearing plate, or makes threading quite unnecessary if the needles do not leave the slits in the slab throughout their lifting movement.
  • Needle boards can be changed if different needling in the different stages of processing, besipiellus with different needles and different needle assembly densities.
  • hairy nonwovens in which fibers protrude on one side.
  • Such nonwovens are used, for example, for lamination onto a substrate, in which case the hair promotes the anchoring of the nonwoven on the substrate.
  • thermo fixation may optionally take place by passing the perforated material through a screen drum oven or through a ribbon dryer to achieve thermofusion of the fibers at their points of intersection, provided that they are made of a suitable material such as e.g. a thermoplastic.
  • known patterns can be produced, such as longitudinal strips, horizontal stripes, diagonals or stitch patterns.
  • FIGs. 1 and 2 together show a plant for producing a needled nonwoven fibrous web.
  • 1 shows an aerodynamic web forming machine with feed, feeder and pickup, a transfer device and the lead-in area of a multi-stage needling machine
  • FIG. 2 shows further needling machines of a pickling line.
  • a roll card, a card or other pile or nonwoven fabric producers can also be provided.
  • the plant of FIGS. 1 and 2 comprises a fiber feeder 1, which is connected via an infeed 2 to an aerodynamic web-forming device 3.
  • a transfer device 4 which has an endless circulating conveyor belt 5, the inlet area
  • the conveyor belt 5 is in the inlet region of the needling 6 an endlessly rotating pressure belt 7 opposite, which serves to compress a discharged from the roller card 3 nonwoven web 8, which is located on the endless circulating conveyor belt 5.
  • a plurality of double needle machines 9 are arranged, of which in each case schematically the needle bar 10, which needles the nonwoven web 8 alternately from above and below, are shown schematically by hatched triangles.
  • the needle bars 10 each carry a needle board which is densely populated with needles or a needle board group densely populated with needles (not shown).
  • the drive motors 91 for the vertical stitch drive and horizontal drive units 11 are schematically shown, which are coupled via connecting rods 12 with the needle bar 10 to this a horizontal, parallel to the direction of extension of the nonwoven web 8 extending, back and forth to give walking movement component.
  • the coupling between the connecting rods 12 and the needle bar 10 is not shown here for reasons of clarity.
  • the arrangement of the needle bar 10 and its drives 11 and 91 is the same for all needle machines 9.
  • the vertical drives of the individual needling machines 9 can be controlled independently of each other and independently of one another in order to be able to influence the stroke frequencies individually, with which the transport speeds of the nonwoven web at the individual needling machines can be changed. But they can also be synchronous with each other, in particular driven by a common drive means, which helps to avoid stretching and compression of the nonwoven web within the Vemadelungsstrom. But at least then the horizontal drives should be individually adjustable in their stroke size to make local transport speed adjustments can.
  • a pair of take-off rollers 13 is arranged, which discharges the finished non-woven fabric web, now designated as the end product with 81, from the system.
  • each two double needle machines 9 can be combined in a common machine frame to a twin unit, the common upper and lower stitch pads (not shown) for the material to be processed web. Possibly.
  • all upper needle bars, i. the upper needle bar group of the twin arrangement can be driven together, and the same applies to all lower needle bar.
  • the horizontal drives 11 for the needle bar 10 occupy a certain space, the gaps Z between adjacent twin units, where the horizontal drives are housed, each bridged by endless circulating conveyor belts 14 which support the processed nonwoven web 8 from below, so they are not under their own weight sags and thereby possibly undesirably stretched.
  • smooth support plates with low surface friction can be considered, over which the nonwoven web can easily slip.
  • the web 8 is needled from both sides and therefore the invention uses double needle machines, which face each other in a Nadelungszone two mutually needling needle aggregates whose needles pierce alternately into the nonwoven web, the stitch pads are on both sides of the nonwoven web 8 against the the latter 8 is pressed by the needle movement, each lamellar slats with longitudinal slots or slotted plates whose slots allow the horizontal movement of the needles for the transport of the nonwoven web 8 in the inserted into this state. Details are not shown here, it can be made to the already mentioned documents.
  • the use of lamellar grates is already known per se from the needling technique, in particular in the case of the formation of pile loops on needle felts, which are to be used, for example, as a floor covering.
  • the needles may be disposed on the needle boards in packages, respectively, wherein packages are offset transversely from each other by less than one pitch in the longitudinal direction to increase the puncture density on the nonwoven web.
  • the slots in a slotted plate as stitch backing must then also in accordance with each other in the transverse direction be offset. It is also possible to adjust the lateral guide on the individual needle machines in coordination with one another such that the punctures created by the needles of a subsequent needle machine are transversely offset in the nonwoven web from the punctures produced by the needles of a preceding needle machine in the same nonwoven web become.
  • the horizontal strokes that have to perform the individual horizontal drives 11 must be adjustable depending on the material properties of the nonwoven web.
  • EP 0 892 102 B1 discloses devices with which the horizontal stroke, even during operation of the machine, can be infinitely adjusted.
  • a change in the stroke frequency into consideration.
  • the expansion or shrinkage of the nonwoven web 8 which may occur as a result of the processing can be determined, for example, contactlessly with the aid of electronic cameras and autocorrelation of the images taken by them, and with the aid of which the horizontal drives can be adjusted.
  • the necessary facilities for this purpose are not shown in the drawing for reasons of clarity. It is understood that such devices are provided at each needle machine, where the nonwoven web can undergo changes, wherein a central control unit can be provided for the entire system.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Details Of Garments (AREA)
  • Table Devices Or Equipment (AREA)

Claims (12)

  1. Procédé pour consolider une bande de matière textile composée d'un voile de fibres ou d'un non-tissé de fibres par aiguilletage en plusieurs étapes, la bande de matière (8) étant aiguilletée alternativement de deux côtés et étant avancée à l'état piqué des aiguilles dans celle-ci exclusivement par un mouvement des aiguilles s'étendant dans la direction longitudinale de la bande de matière (8), caractérisé en ce que la bande de matière (8) est aiguilletée dans une pluralité d'étapes se succédant les unes aux autres immédiatement avec à chaque fois une densité d'aiguilles élevée, chaque aiguille lors de son mouvement de piquage saisissant à chaque fois dans la bande de matière (8) seulement une unique fibre d'une épaisseur de 1 à 2 dtex.
  2. Procédé selon la revendication 1, caractérisé en ce que la profondeur de piquage des aiguilles décroît d'étape en étape.
  3. Procédé selon la revendication 1, caractérisé en ce qu'au moins dans les étapes ultérieures du procédé, la profondeur de piquage des aiguilles est plus petite sur un côté de la bande de matière (8) que la profondeur de piquage des aiguilles sur l'autre côté de la bande de matière (8).
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que la bande de matière (8) est composée d'un voile de carde à une ou plusieurs couches.
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que les mouvements de piquage verticaux des poutres à aiguilles (10) sont synchronisés les uns aux autres.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que la bande de matière (8) entre au moins quelques unes des étapes d'aiguilletage, est supportée par des surfaces d'appui lisses ou par des surfaces de support entraînées avec la bande de matière (8), amenées en contact avec la bande de matière (8).
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que la pluralité d'étapes se succédant les unes aux autres est effectuée par une pluralité (6) d'aiguilleteuses doubles (9) disposées les unes derrière les autres dans une direction de transport de la bande de matière (8).
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que les composantes de vitesse horizontales des aiguilles sont de grandeurs différentes dans les différentes étapes.
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que des trous permanents sont réalisés dans la bande de matière aiguilletée (8) à l'aide d'aiguilles et la bande de matière (8) est ensuite soumise à une opération de fixation.
  10. Procédé selon l'une des revendications précédentes, caractérisé en ce que les aiguilles utilisées sont en matière synthétique.
  11. Procédé selon l'une des revendications précédentes, caractérisé en ce que les aiguilles utilisées ont une profondeur d'encoche de 0,02 mm.
  12. Procédé selon l'une des revendications précédentes, caractérisé en ce que les aiguilles montées sur une planche à aiguilles sont disposées en groupes qui, vus dans la direction de transport de la bande de matière (8), sont décalés transversalement les uns par rapport aux autres de moins d'une distance entre aiguilles.
EP04764967A 2003-10-02 2004-09-08 Procede de consolidation d'une bande de non-tisse par aiguilletage Active EP1644565B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10346472A DE10346472A1 (de) 2003-10-02 2003-10-02 Verfahren und Vorrichtung zum Verfestigen einer Faservliesbahn durch Vernadelung
PCT/EP2004/010026 WO2005033396A1 (fr) 2003-10-02 2004-09-08 Procede et dispositif de consolidation d'une bande de non-tisse par aiguilletage

Publications (2)

Publication Number Publication Date
EP1644565A1 EP1644565A1 (fr) 2006-04-12
EP1644565B1 true EP1644565B1 (fr) 2006-08-09

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EP04764967A Active EP1644565B1 (fr) 2003-10-02 2004-09-08 Procede de consolidation d'une bande de non-tisse par aiguilletage

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Country Link
US (1) US7117571B2 (fr)
EP (1) EP1644565B1 (fr)
CN (1) CN100510224C (fr)
AT (1) ATE335875T1 (fr)
DE (2) DE10346472A1 (fr)
WO (1) WO2005033396A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2025789A1 (fr) 2007-08-09 2009-02-18 Oskar Dilo Maschinenfabrik KG Installation et procédé d'aiguilletage d'une bande non tissée

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US7562426B2 (en) * 2005-04-08 2009-07-21 Velcro Industries B.V. Needling loops into carrier sheets
US8673097B2 (en) 2007-06-07 2014-03-18 Velcro Industries B.V. Anchoring loops of fibers needled into a carrier sheet
WO2008154303A1 (fr) 2007-06-07 2008-12-18 Velcro Industries B.V. Aiguilletage de boucles en de feuilles de support
EP2747594B1 (fr) 2011-08-25 2015-08-26 Velcro Industries B.V. Fermetures pouvant être mises en prise avec des boucles, systèmes et procédés associés
US9078793B2 (en) 2011-08-25 2015-07-14 Velcro Industries B.V. Hook-engageable loop fasteners and related systems and methods
DE102014001792A1 (de) 2014-02-12 2015-08-13 Sandler Ag Unterdeckplate
EP2918719B1 (fr) * 2014-03-13 2016-09-14 Oskar Dilo Maschinenfabrik KG Procédé d'homogénéisation de l'image de piqûre dans une étoffe aiguilletée
CN104131417B (zh) * 2014-07-17 2016-06-01 青岛铠硕机械科技有限公司 一种无纺布生产线
US9790626B2 (en) 2015-01-30 2017-10-17 Velcro BVBA Needling fibrous webs
US10010142B2 (en) 2015-05-29 2018-07-03 Velcro BVBA Loop fastening material
US9872543B2 (en) 2015-05-29 2018-01-23 Velcro BVBA Loop fastening material
CN111437429A (zh) * 2019-01-16 2020-07-24 云南德华生物药业有限公司 可溶羟乙基改性棉纤维织物及其制备方法
CN113265771B (zh) * 2021-04-15 2023-02-10 浙江巴来腾科技股份有限公司 一种透气性好的无纺布及制备工艺
CN114645483A (zh) * 2022-02-21 2022-06-21 江苏金呢工程织物股份有限公司 一种复合造纸毛毯及其制备方法

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2025789A1 (fr) 2007-08-09 2009-02-18 Oskar Dilo Maschinenfabrik KG Installation et procédé d'aiguilletage d'une bande non tissée

Also Published As

Publication number Publication date
ATE335875T1 (de) 2006-09-15
CN1863958A (zh) 2006-11-15
WO2005033396B1 (fr) 2005-06-02
WO2005033396A1 (fr) 2005-04-14
US20060174462A1 (en) 2006-08-10
US7117571B2 (en) 2006-10-10
DE10346472A1 (de) 2005-05-12
DE502004001174D1 (de) 2006-09-21
CN100510224C (zh) 2009-07-08
EP1644565A1 (fr) 2006-04-12

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