EP2041344B1 - Apparatus for producing textiles, nonwoven substances, spunbonded fabrics, paper materials and/or perforated films - Google Patents

Apparatus for producing textiles, nonwoven substances, spunbonded fabrics, paper materials and/or perforated films Download PDF

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Publication number
EP2041344B1
EP2041344B1 EP07785934A EP07785934A EP2041344B1 EP 2041344 B1 EP2041344 B1 EP 2041344B1 EP 07785934 A EP07785934 A EP 07785934A EP 07785934 A EP07785934 A EP 07785934A EP 2041344 B1 EP2041344 B1 EP 2041344B1
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Prior art keywords
prominences
areas
conformity
perforated drum
web
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EP07785934A
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German (de)
French (fr)
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EP2041344A1 (en
Inventor
Ullrich MÜNSTERMANN
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Truetzschler Nonwovens GmbH
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Fleissner GmbH
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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
    • D04H18/04—Needling machines with water jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/26—Perforating by non-mechanical means, e.g. by fluid jet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/24—Perforating by needles or pins

Definitions

  • the invention relates to a device for the production of textiles, nonwovens, spunbonded nonwovens, paper materials and / or perforated films with at least one screen drum with openings for the removal of the liquid discharged from a water bar and located on the outside of the screen drum numerous outwardly directed elevations for the perforation of the web, one or more areas on the outside of the screen drum have no elevations but only openings.
  • the US 5115544 A shows only a method in which the patterns are pressed by means of elevations in the fleece. However, the elevations should not form the imprint in the fleece in the subject of the application, but merely surround the pattern to be formed on the sieve drum.
  • a process for producing a nonwoven fabric is also known (US Pat. DE69224769 ), in which a carrier tape (5) is used, at the forming Side a plurality of approaches (6, 6 ') is mounted.
  • the mentioned approaches (6, 6 ') have a larger and a smaller size. These are made of thermoplastic resin and welded to said forming sides of the tape.
  • a quantity of fiber (2) is applied to said band (5) provided with irregular patterns formed by said lugs (6, 61). Water or hot air is applied under high pressure to the stated amount of fiber in order to press them and to entangle the fibers. Subsequently, said amount of fiber (2) is pressed onto said lugs so as to form patterns on the web.
  • the invention has for its object to provide a device which makes it possible during the water needling at the same time to introduce perforation and patterns such as animal pictures or plant pictures or other geometrically demarcated figures in the fleece, without significantly affecting the solidification. Furthermore, this gives a closed area in the web with vents instead of openings that are distributed over the entire surface of the web. In the latter case, the strength or stiffness of a nonwoven fabric is not achieved to the desired extent.
  • the advantageous division of the nonwoven surface into areas with and without vents, the strength or rigidity of a nonwoven can be significantly improved, the pattern are designed in particular by vents.
  • the object has been achieved in that the areas which have the elevations and which serve to form a surface pattern in the fleece, such as animals, plants or geometric shapes, are arranged in a corresponding arrangement or grouping on the drum basket and the surface pattern to be formed on the outside surround or restrict the sieve drum.
  • the advantage of this device consists in particular in the fact that the patterns are introduced not only by the targeted perforation by elevations or mandrels, but that the patterns are formed at the points in the fleece to which only drainage holes and no elevations or spikes are.
  • the areas with elevations or mandrels cover a major part of the screen drum surface.
  • the ridges or spikes randomly disposed within their respective areas the greater part of the area of the web is uniformly solidified by the perforations formed in the web.
  • the areas formed as patterns are perforated.
  • the elevations are at least partially distributed irregularly on the outside of the screen drum or at different distances from each other and / or arranged at a uniform distance from each other.
  • At least openings for the passage of liquid discharged from the water bar are provided on the outside of the screening drum in areas in which elevations and / or in the areas in which no elevations are provided.
  • the elevations on the outside of the screen drum have the form of mandrels.
  • mandrels straight lines, wave structures or raster shapes can be generated, with the mandrels after the pattern formation can easily be pulled out of the nonwoven fabric again.
  • the elevations are conically tapering or tapered outward or cylindrical shape towards the outside.
  • elevations have a circular, oval or polygonal or square or oblong cross section.
  • elevations are arranged in the region of a basket drum shell with elevations at a distance between 1.5 mm and 20 mm, preferably 3 mm to 10 mm.
  • the elevations are advantageous for the elevations to cover a region of the drum shell between 20% and 50%, preferably between 25% and 30%.
  • the areas without elevations total make up an area of 1% to 50%, preferably between 20% and 50%, or between 25% and 30% of the total surface of the screening drum.
  • the regions which have elevations and which are used to form surface patterns in the fleece, such as animals, plants or geometric shapes are arranged in a corresponding arrangement or grouping on the sieve drum sheath.
  • the patterns in the web are produced in this embodiment of the invention by areas in the fleece, which are not perforated by the elevations on the basket drum shell.
  • the areas which have no elevations and the areas, the elevations for forming a surface pattern, such as animals, plants or geometric shapes are arranged in a corresponding arrangement or grouping.
  • the areas with elevations or mandrels cover a large part of the screen drum surface, cause in the web the desired solidification of the nonwoven fabric and at the same time contribute to the surface patterning of the nonwoven fabric.
  • the pattern produced in the fleece at least partially or predominantly lie in the plane of the web and the fleece has an at least approximately the same thickness, wherein the perforations introduced in the fleece are distributed so that one or more same or different shaped Illustrate surface patterns in the fleece.
  • the areas of the drum shell without Elevations and the areas with elevations each form a delimited area.
  • the areas of the drum shell are connected without elevations or surround the areas with increases or include.
  • the openings in the basket drum over the entire surface of the basket drum shell are evenly and / or unevenly distributed and have a diameter between 0.1 mm and 3 mm, preferably between 1 mm and 1.5 mm.
  • the areas with elevations or mandrels cover a predominant part of the screen drum surface, cause the desired solidification of the nonwoven fabric in the nonwoven and at the same time contribute to the surface patterning of the nonwoven fabric.
  • a screen drum which consists of a screen drum shell 2, which may consist of a plastic or metal and which is supported by means of support members 11 on a cylindrical or more strongly formed tube 13.
  • the screen drum shell 2 thus forms the surface of the screen drum 1.
  • the screen drum shell 2 has openings, drainage openings or micropores 4, which serve to remove the sprayed from the water bar 7 water of a water jet 6.
  • the tube 13 also serves as a suction tube to suck the sprayed onto the basket drum shell 2 and thus on fleece 5 water again. The removal of the water then takes place via an incorporated into the tube 13 suction slot 12, to which a vacuum is applied.
  • two or more water bars 7 may also be arranged in the region of the screening drum 1.
  • a pipe 13 is provided with correspondingly two or more suction slots 12.
  • the screen drum shell 2 numerous outwardly directed elevations 3, which serve the perforation of the web 5. These elevations or mandrels 3 leave small holes or perforations 14 in the fleece 5 during the hydrodynamic needling, which are substantially sharply demarcated and for this purpose are pressed into an already consolidated or partially consolidated nonwoven fabric 5.
  • the perforations 14 in the fleece approximately correspond to the cross section of the mandrels 3.
  • elevations 3 are arranged in the form of thorns close to each other.
  • the areas 9 with the spikes 3 represent closed or firmly delimited areas.
  • the spacing of the elevations or mandrels 3 relative to one another is uneven.
  • the elevations 3 on the outside of the screen drum 1 or on the screen drum shell 2 are after the in Fig. 3 illustrated embodiment arranged irregularly distributed. However, the elevations may be arranged according to an embodiment not shown in the drawing with a uniform distance from each other.
  • the elevations 3 are tapered towards the outside or tapering pointed or cylindrical.
  • the ridges 3 may have a circular, oval, polygonal, square or oblong cross section.
  • the cross-sectional shape of the elevations or mandrels 3 can also have the contour of an involute.
  • the elevations 3 from the region 9 of the drum shell 2 are arranged at a distance between 1.5 and 20 mm, preferably 3 to 10 mm. Further, the ridges 3 may cover a region 9 of the basket drum shell 2 between 20% and 50%, preferably between 25% and 30% of the surface.
  • the areas 9 that have elevations 3 can be used to form a surface pattern such as animals, plants or geometric shapes in the fleece 5.
  • a pattern is produced by perforation of the web 5, which stands out from the rest of the non-perforated surface of the web, which correspond to the areas 8.
  • FIG. 3 and FIG. 4 shown areas 8 on the surface of the drum shell 2 in which no elevations or mandrels 3 are provided. These areas 8 of the drum shell 2 are provided only with the drainage holes, openings or micropores 4.
  • the areas 8 without elevations 3, occupy an overall area of 1% to 50%, preferably between 20% and 50% or between 25% and 30% of the entire surface of the basket drum shell 2 of the screening drum 1.
  • the areas 8 without elevations or mandrels 3 on the surface of the drum shell 2 effect according to Fig. 5 b and 5 d in the water needling of the nonwoven fabric 5, a surface change in the web 5 in comparison to the surrounding perforated surfaces in the nonwoven fabric 5.
  • the areas 8, which have no elevations 3, serve to form a surface pattern such as animals, plants or geometric shapes, to which the Areas 8 are surrounded by a corresponding arrangement or grouping of thorns 3.
  • the regions 8 on the surface of the drum shell 2 can be arranged isolated from one another or connected to one another and thereby also produce superordinate patterns in the nonwoven 5.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Artificial Filaments (AREA)

Abstract

The invention relates to an apparatus for producing textiles, nonwoven substances, spun-bonded fabrics or paper materials (5) with the aid of at least one screen drum (1) having openings (4) for transporting away the fluid (6) which is output from a water bar (7) and having numerous outwardly directed elevations (3) which are situated on the outside of the screen drum (1) for the perforation of the nonwoven (5). The invention is based on the object of providing an apparatus which makes it possible, during the water conversion and at the same time as the perforation, also to make patterns in the nonwoven without influencing the strengthening substantially in the process. The object has been achieved in that one or a plurality of regions (8) on the outer side of the screen drum (1) does/do not have any elevations (3) but only openings (4).

Description

Gegenstand der Erfindung ist eine Vorrichtung zur Herstellung von Textilien, Vliesstoffen, Spinnvliesen, Papierwerkstoffen und/oder perforierten Folien mit mindestens einer Siebtrommel mit Öffnungen zum Abtransport der aus einem Wasserbalken abgegebenen Flüssigkeit und an der Außenseite der Siebtrommel befindlichen zahlreichen nach außen gerichteten Erhöhungen für die Perforation des Vlieses, ein oder mehrere Bereiche auf der Außenseite der Siebtrommel keine Erhöhungen sondern lediglich Öffnungen aufweisen.The invention relates to a device for the production of textiles, nonwovens, spunbonded nonwovens, paper materials and / or perforated films with at least one screen drum with openings for the removal of the liquid discharged from a water bar and located on the outside of the screen drum numerous outwardly directed elevations for the perforation of the web, one or more areas on the outside of the screen drum have no elevations but only openings.

Aus der EP 1 001 064 B1 ist bereits eine Vorrichtung zur Herstellung von perforierten Vliesstoffen mittels hydrodynamischer Vernadelung bekannt, wobei die Perforation dabei aus im Wesentlichen scharf abgegrenzten Löchern im Vlies in beliebiger Dimension gebildet ist. Diese Vorrichtung besteht aus einer das Vlies tragenden und transportierenden glatten Endlosfläche mit Drainageöffnungen zum Abtransport der mittels eines Wasserbalkens aus vielen Ausströmungsöffnungen mit Hochdruck aufgespritzten Flüssigkeit und weiterhin mit auf der Ebene der glatten Fläche empor stehenden plastischen Erhöhungen zur Herstellung der Perforation im Vlies. Dabei sind die Erhöhungen ungleichmäßig über die Endlosfläche angeordnet, wobei sie nach dem Zufallsprinzip deckend über die ganze das Vlies tragende Fläche verteilt sind. Mit einer solchen Anlage können aber keine Muster wie Tier- oder Pflanzenbilder oder andere geometrische abgegrenzte Figuren in das Vlies eingebracht werden.From the EP 1 001 064 B1 An apparatus for the production of perforated nonwovens by hydrodynamic needling is already known, wherein the perforation is formed from substantially sharply delimited holes in the fleece in any dimension. This device consists of a non-woven carrying and transporting smooth endless surface with drainage holes for transporting the sprayed by a water bar from many outflow openings with high pressure fluid and continue with upstanding on the level of smooth surface plastic elevations for producing the perforation in the fleece. In this case, the elevations are arranged unevenly over the endless surface, whereby they are randomly distributed over the entire surface carrying the nonwoven material. With such a system, however, no patterns such as animal or plant images or other geometric demarcated figures can be introduced into the fleece.

Die US 5115544 A zeigt lediglich ein Verfahren, bei dem die Muster mit Hilfe von Erhöhungen in das Vlies eingepresst werden. Die Erhöhungen sollen beim Anmeldungsgegenstand jedoch nicht den Abdruck im Vlies bilden, sondern lediglich das zu bildende Muster auf der Siebtrommel umgeben.The US 5115544 A shows only a method in which the patterns are pressed by means of elevations in the fleece. However, the elevations should not form the imprint in the fleece in the subject of the application, but merely surround the pattern to be formed on the sieve drum.

Es ist ferner ein Verfahren zur Herstellung eines Vliesstoffs bekannt ( DE69224769 ), bei dem ein Trägerband (5) verwendet wird, an dessen formender Seite eine Mehrzahl von Ansätzen (6, 6') angebracht ist. Die genannten Ansätze (6, 6') haben eine größere und eine kleinere Größe. Diese sind aus thermoplastischem Kunstharz und auf die genannten formenden Seiten des Bands aufgeschweißt. Eine Fasermenge (2) wird auf das genannte Band (5) gegeben, das mit von den genannten Ansätzen (6, 61) geformten unregelmäßigen Mustern versehen ist. Wasser oder Heißluft wird unter hohem Druck auf die genannte Fasermenge aufgebracht, um diese zu pressen und die Fasern zu verfitzen. Anschließend wird die genannte Fasermenge (2) auf die genannten Ansätze gepresst, um auf diese Weise Muster auf dem Vlies zu formen.A process for producing a nonwoven fabric is also known (US Pat. DE69224769 ), in which a carrier tape (5) is used, at the forming Side a plurality of approaches (6, 6 ') is mounted. The mentioned approaches (6, 6 ') have a larger and a smaller size. These are made of thermoplastic resin and welded to said forming sides of the tape. A quantity of fiber (2) is applied to said band (5) provided with irregular patterns formed by said lugs (6, 61). Water or hot air is applied under high pressure to the stated amount of fiber in order to press them and to entangle the fibers. Subsequently, said amount of fiber (2) is pressed onto said lugs so as to form patterns on the web.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung bereitzustellen, die es ermöglicht, während der Wasservernadelung gleichzeitig zur Perforation auch Muster wie Tierbilder oder Pflanzenbilder oder andere geometrisch abgegrenzte Figuren in das Vlies einzubringen, ohne dabei die Verfestigung wesentlich nachteilig zu beeinflussen. Ferner erhält man hierdurch einen geschlossenen Bereich im Vlies mit Entlüftungsöffnungen anstelle von Öffnungen, die über die gesamte Oberfläche des Vlieses verteilt sind. Im letzteren Fall wird die Festigkeit oder Steifigkeit eines Vlieses nicht in dem gewünschten Maß erzielt. Durch die vorteilhafte Aufteilung der Vliesoberfläche in Bereiche mit und ohne Entlüftungsöffnungen kann die Festigkeit oder Steifigkeit eines Vlieses wesentlich verbessert werden, wobei die Muster insbesondere durch Entlüftungsöffnungen gestaltet werden.The invention has for its object to provide a device which makes it possible during the water needling at the same time to introduce perforation and patterns such as animal pictures or plant pictures or other geometrically demarcated figures in the fleece, without significantly affecting the solidification. Furthermore, this gives a closed area in the web with vents instead of openings that are distributed over the entire surface of the web. In the latter case, the strength or stiffness of a nonwoven fabric is not achieved to the desired extent. The advantageous division of the nonwoven surface into areas with and without vents, the strength or rigidity of a nonwoven can be significantly improved, the pattern are designed in particular by vents.

Die Aufgabe wurde dadurch gelöst, dass die Bereiche, die die Erhöhungen aufweisen und die zur Bildung eines Oberflächenmusters im Vlies wie Tiere, Pflanzen oder geometrische Formen dienen, in einer entsprechenden Anordnung oder Gruppierung auf dem Siebtrommelmantel angeordnet sind und das zu bildende Oberflächenmuster auf der Außenseite der Siebtrommel umgeben bzw. eingrenzen.The object has been achieved in that the areas which have the elevations and which serve to form a surface pattern in the fleece, such as animals, plants or geometric shapes, are arranged in a corresponding arrangement or grouping on the drum basket and the surface pattern to be formed on the outside surround or restrict the sieve drum.

Der Vorteil dieser Vorrichtung besteht dabei insbesondere darin, dass die Muster nicht nur durch die gezielte Perforation durch Erhöhungen bzw. Dorne eingeführt werden, sondern dass die Muster an den Stellen im Vlies entstehen, an denen sich lediglich Entwässerungsöffnungen und keine Erhöhungen bzw. Dorne befinden. Die Bereiche mit Erhöhungen bzw. Dorne decken dabei einen überwiegenden Teil der Siebtrommeloberfläche ab. Somit wird durch die Erhöhungen bzw. Dorne, die innerhalb ihrer jeweiligen Flächen zufällig angeordnet sind, der größere Teil der Fläche des Vlieses durch die im Vlies gebildeten Perforationen gleichmäßig verfestigt. Nach diesem Ausführungsbeispiel sind die Flächen, die als Muster ausgebildet sind, perforiert. Ebenso ist es mit dieser Ausbildung der Siebtrommeloberfläche möglich, dass die Flächen, die als Muster im Vlies erscheinen, nicht perforiert sind. Hierdurch lässt sich die Vielfalt der Muster auf einfache Weise im Vlies erzeugen.The advantage of this device consists in particular in the fact that the patterns are introduced not only by the targeted perforation by elevations or mandrels, but that the patterns are formed at the points in the fleece to which only drainage holes and no elevations or spikes are. The areas with elevations or mandrels cover a major part of the screen drum surface. Thus, by the ridges or spikes randomly disposed within their respective areas, the greater part of the area of the web is uniformly solidified by the perforations formed in the web. According to this embodiment, the areas formed as patterns are perforated. Likewise, it is possible with this design of the screen drum surface, that the surfaces that appear as a pattern in the web are not perforated. As a result, the variety of patterns can be generated easily in the fleece.

Vorteilhaft ist es weiterhin, dass die Erhöhungen auf der Außenseite der Siebtrommel zumindest teilweise unregelmäßig verteilt oder mit unterschiedlichem Abstand zueinander und/oder mit gleichmäßigem Abstand zueinander angeordnet sind.It is also advantageous that the elevations are at least partially distributed irregularly on the outside of the screen drum or at different distances from each other and / or arranged at a uniform distance from each other.

In einer vorteilhaften Ausführungsform sind auf der Außenseite der Siebtrommel in Bereichen, in denen Erhöhungen und/oder in den Bereichen, in denen keine Erhöhungen vorgesehen sind, zumindest Öffnungen zum Durchlass von aus dem Wasserbalken abgegebener Flüssigkeit vorgesehen.In an advantageous embodiment, at least openings for the passage of liquid discharged from the water bar are provided on the outside of the screening drum in areas in which elevations and / or in the areas in which no elevations are provided.

Vorteilhaft ist ferner, dass die Erhöhungen auf der Außenseite der Siebtrommel die Form von Dorne aufweisen. Hierdurch können beispielsweise gerade Linien, Wellenstrukturen oder Rasterformen erzeugt werden, wobei sich die Dorne nach der Musterbildung ohne weiteres wieder aus dem Vliesstoff herausziehen lassen.It is also advantageous that the elevations on the outside of the screen drum have the form of mandrels. As a result, for example, straight lines, wave structures or raster shapes can be generated, with the mandrels after the pattern formation can easily be pulled out of the nonwoven fabric again.

In weiterer Ausgestaltung der Erfindung ist es vorteilhaft, dass die Erhöhungen nach außen hin konisch abnehmend oder spitz auslaufend oder zylinderförmig ausgebildet sind.In a further embodiment of the invention, it is advantageous that the elevations are conically tapering or tapered outward or cylindrical shape towards the outside.

Vorteilhaft ist es ferner, dass die Erhöhungen einen kreis-, oval- oder mehreckförmigen oder quadratischen oder länglichen Querschnitt aufweisen.It is also advantageous that the elevations have a circular, oval or polygonal or square or oblong cross section.

Dabei ist es vorteilhaft, dass die Erhöhungen im Bereich eines Siebtrommelmantels mit Erhöhungen in einem Abstand zwischen 1,5 mm und 20 mm, vorzugsweise 3 mm bis 10 mm, angeordnet sind.It is advantageous that the elevations are arranged in the region of a basket drum shell with elevations at a distance between 1.5 mm and 20 mm, preferably 3 mm to 10 mm.

Ferner ist es vorteilhaft, dass die Erhöhungen einen Bereich des Siebtrommelmantels zwischen 20% und 50%, vorzugsweise zwischen 25% und 30%, abdecken.Furthermore, it is advantageous for the elevations to cover a region of the drum shell between 20% and 50%, preferably between 25% and 30%.

Vorteilhaft ist es ferner, dass die Bereiche ohne Erhöhungen insgesamt eine Fläche von 1 % bis 50%, vorzugsweise zwischen 20% und 50%, oder zwischen 25% und 30% der gesamten Oberfläche der Siebtrommel ausmachen.It is also advantageous that the areas without elevations total make up an area of 1% to 50%, preferably between 20% and 50%, or between 25% and 30% of the total surface of the screening drum.

Vorteilhaft ist es auch, dass die Bereiche, die Erhöhungen aufweisen und der Bildung von Oberflächenmustern im Vlies wie Tiere, Pflanzen oder geometrische Formen eingesetzt werden, in einer entsprechenden Anordnung oder Gruppierung auf dem Siebtrommelmantel angeordnet sind. Die Muster im Vlies werden bei dieser Ausführung der Erfindung durch Bereiche im Vlies erzeugt, die nicht durch die Erhöhungen auf dem Siebtrommelmantel perforiert werden. Ferner ist es vorteilhaft, dass die Bereiche, die keine Erhöhungen und die Bereiche, die Erhöhungen zur Bildung eines Oberflächenmusters wie Tiere, Pflanzen oder geometrische Formen in einer entsprechenden Anordnung oder Gruppierung angeordnet sind. Die Bereiche mit Erhöhungen bzw. Dorne decken einen großen Teil der Siebtrommeloberfläche ab, bewirken im Vlies die gewünschte Verfestigung des Vliesstoffs und tragen auch gleichzeitig zur Oberflächenmusterung des Vliesstoffs bei.It is also advantageous that the regions which have elevations and which are used to form surface patterns in the fleece, such as animals, plants or geometric shapes, are arranged in a corresponding arrangement or grouping on the sieve drum sheath. The patterns in the web are produced in this embodiment of the invention by areas in the fleece, which are not perforated by the elevations on the basket drum shell. Furthermore, it is advantageous that the areas which have no elevations and the areas, the elevations for forming a surface pattern, such as animals, plants or geometric shapes, are arranged in a corresponding arrangement or grouping. The areas with elevations or mandrels cover a large part of the screen drum surface, cause in the web the desired solidification of the nonwoven fabric and at the same time contribute to the surface patterning of the nonwoven fabric.

Vorteilhaft ist es auch das, die im Vlies erzeugten Muster zumindest teilweise oder überwiegend in der Ebene des Vlieses liegen und das Vlies eine zumindest annähernd gleiche Dicke aufweist, wobei die im Vlies eingebrachten Perforationen so verteilt sind, dass sie ein oder mehrere gleich oder unterschiedlich geformte Oberflächenmuster im Vlies abbilden. In weiterer Ausgestaltung der Erfindung ist es vorteilhaft, dass die Bereiche des Siebtrommelmantels ohne Erhöhungen und die Bereiche mit Erhöhungen jeweils eine abgegrenzte Fläche bilden.It is also advantageous that the pattern produced in the fleece at least partially or predominantly lie in the plane of the web and the fleece has an at least approximately the same thickness, wherein the perforations introduced in the fleece are distributed so that one or more same or different shaped Illustrate surface patterns in the fleece. In a further embodiment of the invention, it is advantageous that the areas of the drum shell without Elevations and the areas with elevations each form a delimited area.

Vorteilhaft ist es ferner, dass die Bereiche des Siebtrommelmantels ohne Erhöhungen miteinander verbunden sind oder die Bereiche mit Erhöhungen umgeben bzw. einschließen.It is also advantageous that the areas of the drum shell are connected without elevations or surround the areas with increases or include.

Besonders vorteilhaft ist es ferner, dass die Öffnungen im Siebtrommelmantel über die gesamte Fläche des Siebtrommelmantels gleichmäßig und/oder ungleichmäßig verteilt sind und einen Durchmesser zwischen 0,1 mm und 3 mm, vorzugsweise zwischen 1 mm und 1,5 mm, aufweisen.It is also particularly advantageous that the openings in the basket drum over the entire surface of the basket drum shell are evenly and / or unevenly distributed and have a diameter between 0.1 mm and 3 mm, preferably between 1 mm and 1.5 mm.

Somit decken die Bereiche mit Erhöhungen bzw. Dorne einen überwiegenden Teil der Siebtrommeloberfläche ab, bewirken im Vlies die gewünschte Verfestigung des Vliesstoffs und tragen auch gleichzeitig zur Oberflächenbemusterung des Vliesstoffs bei.Thus, the areas with elevations or mandrels cover a predominant part of the screen drum surface, cause the desired solidification of the nonwoven fabric in the nonwoven and at the same time contribute to the surface patterning of the nonwoven fabric.

Es zeigen:

Fig. 1
eine Detailansicht der Oberfläche eines Siebtrommelmantels mit und ohne Erhöhungen bzw. Dorne
Fig. 2
eine schematische Darstellung einer Siebtrommel mit einem oder mehreren gestrichelt dargestellten Wasserbalken zur Strahlbeaufschlagung von Vliesen,
Fig. 3
eine Ausschnitt aus der Oberfläche der Siebtrommelmantel mit Erhöhungen bzw. Dorne und Bereiche ohne Erhöhungen,
Fig. 4
eine Teilanquerschnitt der Siebtrommel gemäß Fig. 1 mit den Erhöhungen bzw. Dorne und einem Bereich ohne Erhöhungen,
Fig. 5a bis d
verschiedene Ausführungsbeispiele von durch Perforation oder durch freie Flächen gebildete Muster im Vlies, wobei gemäß Fig. 5b die Perforationen die die Muster bildende Fläche eingrenzen.
Show it:
Fig. 1
a detailed view of the surface of a basket drum shell with and without elevations or mandrels
Fig. 2
a schematic representation of a screen drum with one or more dashed lines shown water beam for Strahlbeaufschlagung nonwovens,
Fig. 3
a section of the surface of the screen drum shell with elevations or mandrels and areas without elevations,
Fig. 4
a partial cross section of the sieve drum according to Fig. 1 with the elevations or spines and an area without elevations,
Fig. 5a to d
various embodiments of pattern formed by perforation or by free surfaces in the nonwoven, according to Fig. 5b the perforations delimit the area forming the pattern.

In Fig. 1 ist mit 1 eine Siebtrommel bezeichnet, die aus einem Siebtrommelmantel 2, der aus einem Kunststoff oder Metall bestehen kann und der mit Hilfe von Stützelementen 11 auf einem zylinderförmigen bzw. stärker ausgebildeten Rohr 13 abgestützt ist. Der Siebtrommelmantel 2 bildet somit die Oberfläche der Siebtrommel 1. Der Siebtrommelmantel 2 weist Öffnungen, Drainageöffnungen bzw. Mikroporen 4 auf, die dem Abtransport des aus dem Wasserbalken 7 aufgespritzten Wassers eines Wasserstrahls 6 dienen. Das Rohr 13 dient gleichzeitig auch als Saugrohr, um das auf den Siebtrommelmantel 2 und somit auf Vlies 5 aufgespritzte Wasser wieder abzusaugen. Der Abtransport des Wassers erfolgt dann über einen in das Rohr 13 eingearbeiteten Saugschlitz 12, an dem ein Unterdruck anliegt.In Fig. 1 is denoted by 1 a screen drum, which consists of a screen drum shell 2, which may consist of a plastic or metal and which is supported by means of support members 11 on a cylindrical or more strongly formed tube 13. The screen drum shell 2 thus forms the surface of the screen drum 1. The screen drum shell 2 has openings, drainage openings or micropores 4, which serve to remove the sprayed from the water bar 7 water of a water jet 6. The tube 13 also serves as a suction tube to suck the sprayed onto the basket drum shell 2 and thus on fleece 5 water again. The removal of the water then takes place via an incorporated into the tube 13 suction slot 12, to which a vacuum is applied.

Gemäß Fig. 2 können in einem zweiten Ausführungsbeispiel auch zwei oder mehrere Wasserbalken 7 im Bereich der Siebtrommel 1 angeordnet sein. Dazu wird ein in der Zeichnung nicht dargestelltes Rohr 13 mit entsprechend zwei oder mehreren Saugschlitzen 12 versehen.According to Fig. 2 In a second exemplary embodiment, two or more water bars 7 may also be arranged in the region of the screening drum 1. For this purpose, a pipe 13, not shown in the drawing, is provided with correspondingly two or more suction slots 12.

Wie insbesondere aus den Fig. 1 und 4 hervorgeht, weist der Siebtrommelmantel 2 zahlreiche nach außen gerichtete Erhöhungen 3 auf, die der Perforation des Vlieses 5 dienen. Diese Erhöhungen bzw. Dorne 3 hinterlassen während der hydrodynamischen Vernadelung kleine Löcher bzw. Perforationen 14 im Vlies 5, die im Wesentlichen scharf abgegrenzt und hierzu in einem bereits verfestigten oder teilweise verfestigten Vliesstoff 5 eingedrückt werden. Die Perforationen 14 im Vlies entsprechen in etwa dem Querschnitt der Dorne 3.As in particular from the Fig. 1 and 4 shows, the screen drum shell 2 numerous outwardly directed elevations 3, which serve the perforation of the web 5. These elevations or mandrels 3 leave small holes or perforations 14 in the fleece 5 during the hydrodynamic needling, which are substantially sharply demarcated and for this purpose are pressed into an already consolidated or partially consolidated nonwoven fabric 5. The perforations 14 in the fleece approximately correspond to the cross section of the mandrels 3.

Es gibt Bereiche 9 auf der Oberfläche des Siebtrommelmantels 2, in denen sind Erhöhungen 3 in Form von Dornen dicht nebeneinander angeordnet. Die Bereiche 9 mit den Dornen 3 stellen geschlossene bzw. fest abgegrenzte Bereiche dar. Der Abstand der Erhöhungen bzw. Dorne 3 zueinander ist ungleichmäßig.There are areas 9 on the surface of the basket drum shell 2, in which elevations 3 are arranged in the form of thorns close to each other. The areas 9 with the spikes 3 represent closed or firmly delimited areas. The spacing of the elevations or mandrels 3 relative to one another is uneven.

Durch die zufällige Anordnung der Erhöhungen bzw. Dorne 3 wird eine über die Fläche gleichmäßige Festigkeit im Vlies ohne Interferenzstreifen erreicht.Due to the random arrangement of the elevations or mandrels 3 over the surface uniform strength in the web is achieved without interference fringes.

Die Erhöhungen 3 auf der Außenseite der Siebtrommel 1 bzw. auf dem Siebtrommelmantel 2 sind nach dem in Fig. 3 dargestellten Ausführungsbeispiel unregelmäßig verteilt angeordnet. Die Erhöhungen können jedoch nach einem in der Zeichnung nicht dargestellten Ausführungsbeispiel auch mit gleichmäßigem Abstand zueinander angeordnet sein.The elevations 3 on the outside of the screen drum 1 or on the screen drum shell 2 are after the in Fig. 3 illustrated embodiment arranged irregularly distributed. However, the elevations may be arranged according to an embodiment not shown in the drawing with a uniform distance from each other.

Die Erhöhungen 3 sind nach außen hin konisch abnehmend oder spitz auslaufend oder zylinderförmig ausgebildet. Die Erhöhungen 3 können einen kreisförmigen, ovalförmigen, mehreckförmigen, quadratischen oder länglichen Querschnitt aufweisen.The elevations 3 are tapered towards the outside or tapering pointed or cylindrical. The ridges 3 may have a circular, oval, polygonal, square or oblong cross section.

Die Querschnittsform der Erhöhungen bzw. Dorne 3 können auch die Kontur einer Evolente aufweisen.The cross-sectional shape of the elevations or mandrels 3 can also have the contour of an involute.

Die Erhöhungen 3 aus dem Bereich 9 des Siebtrommelmantels 2 sind in einem Abstand zwischen 1,5 und 20 mm, vorzugsweise 3 bis 10 mm, angeordnet. Ferner können die Erhöhungen 3 einen Bereich 9 des Siebtrommelmantels 2 zwischen 20% und 50% vorzugsweise zwischen 25% und 30% der Fläche abdecken.The elevations 3 from the region 9 of the drum shell 2 are arranged at a distance between 1.5 and 20 mm, preferably 3 to 10 mm. Further, the ridges 3 may cover a region 9 of the basket drum shell 2 between 20% and 50%, preferably between 25% and 30% of the surface.

Entsprechend der Fig. 5a und 5c können in einem Ausführungsbeispiel die Bereiche 9, die Erhöhungen 3 aufweisen, zur Bildung eines Oberflächenmusters wie Tiere, Pflanzen oder geometrischen Formen im Vlies 5 eingesetzt werden. Dabei wird durch Perforation des Vlieses 5 ein Muster erzeugt, das sich von der übrigen nicht perforierten Fläche des Vlieses, welche den Bereichen 8 entsprechen, hervorhebt.According to the Fig. 5a and 5c For example, in one exemplary embodiment, the areas 9 that have elevations 3 can be used to form a surface pattern such as animals, plants or geometric shapes in the fleece 5. In this case, a pattern is produced by perforation of the web 5, which stands out from the rest of the non-perforated surface of the web, which correspond to the areas 8.

Von besonderer Bedeutung sind die ebenfalls in Fig. 3 und Fig. 4 dargestellten Bereiche 8 auf der Oberfläche des Siebtrommelmantels 2 in denen keine Erhöhungen bzw. Dorne 3 vorgesehen sind. Diese Bereiche 8 des Siebtrommelmantels 2 sind lediglich mit den Drainageöffnungen, Öffnungen oder Mikroporen 4 versehen. Die Bereiche 8 ohne Erhöhungen 3, nehmen insgesamt eine Fläche von 1 % bis 50 % vorzugsweise zwischen 20% und 50% oder zwischen 25% und 30% der gesamten Oberfläche des Siebtrommelmantels 2 der Siebtrommel 1 ein.Of particular importance are also in FIG. 3 and FIG. 4 shown areas 8 on the surface of the drum shell 2 in which no elevations or mandrels 3 are provided. These areas 8 of the drum shell 2 are provided only with the drainage holes, openings or micropores 4. The areas 8 without elevations 3, occupy an overall area of 1% to 50%, preferably between 20% and 50% or between 25% and 30% of the entire surface of the basket drum shell 2 of the screening drum 1.

Die Bereiche 8 ohne Erhöhungen bzw. Dorne 3 auf der Oberfläche des Siebtrommelmantels 2 bewirken gemäß Fig. 5 b und 5 d bei der Wasservernadelung des Vliesstoffes 5 eine Oberflächenveränderung im Vlies 5 im Vergleich zu den diese umgebenden perforierten Flächen im Vlies 5. Die Bereiche 8, die keine Erhöhungen 3 aufweisen, dienen dabei der Bildung eines Oberflächenmusters wie Tiere, Pflanzen oder geometrischen Formen, wobei hierzu die Bereiche 8 von einer entsprechenden Anordnung oder Gruppierung von Dornen 3 umgeben sind. Die Bereiche 8 auf der Oberfläche des Siebtrommelmantels 2 können isoliert voneinander angeordnet oder miteinander verbunden sein und dadurch auch übergeordnete Muster im Vlies 5 erzeugen.The areas 8 without elevations or mandrels 3 on the surface of the drum shell 2 effect according to Fig. 5 b and 5 d in the water needling of the nonwoven fabric 5, a surface change in the web 5 in comparison to the surrounding perforated surfaces in the nonwoven fabric 5. The areas 8, which have no elevations 3, serve to form a surface pattern such as animals, plants or geometric shapes, to which the Areas 8 are surrounded by a corresponding arrangement or grouping of thorns 3. The regions 8 on the surface of the drum shell 2 can be arranged isolated from one another or connected to one another and thereby also produce superordinate patterns in the nonwoven 5.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Siebtrommelscreen drum
22
Siebtrommelmantel und Oberfläche der SiebtrommelSieve drum shell and surface of the sieve drum
33
Erhöhungen bzw. DorneElevations or spines
44
Öffnungen, Drainageöffnungen, MikroporenOpenings, drainage holes, micropores
55
Vlies, VliesstoffFleece, nonwoven fabric
66
Wasserstrahlwaterjet
77
Wasserbalkenwater beam
88th
Siebtrommelmantel ohne Erhöhungen, mit ÖffnungenDrum sleeve without elevations, with openings
99
Siebtrommelmantel mit Erhöhungen, mit ÖffnungenScreen drum mantle with elevations, with openings
1111
Stützelementesupport elements
1212
Saugschlitzsuction slot
1313
Rohrpipe
1414
Löcher bzw. Perforationen im VliesHoles or perforations in the fleece

Claims (15)

  1. Device for fabricating textiles, nonwovens, spunbonds, paper materials (5) by means of at least one perforated drum (1), with openings (4) for removal of liquid (6) discharged from a jet head (7) and numerous prominences (3) directed outward, located on the outside of the perforated drum (1), for perforation of the web (5), with one or several areas (8) on the outside of the perforated drum (1) not containing prominences (3) but merely openings (4), characterized in that the areas (8) containing prominences (3) and used for formation of a surface pattern in the web (5), such as animals, plants or geometrical shapes, are arranged in a corresponding layout or group on the perforated drum jacket (2) and surround or limit the surface pattern to be formed on the outside of the perforated drum (1).
  2. Device in conformity with claim 1, characterized in that the prominences (3) on the outside of the perforated drum (1) are, at least in part, distributed unevenly or arranged at varying distances from each other and/or at regular distances from each other.
  3. Device in conformity with claim 1, characterized in that the outside of the perforated drum (1) in the areas (9) provided with prominences (3) and/or in the areas (8) not provided with prominences contains at least openings (4) for letting pass the liquid (6) discharged by the jet head (7).
  4. Device in conformity with claim 1, characterized in that the prominences (3) on the outside of the perforated drum (2) are shaped like spikes.
  5. Device in conformity with claim 1, characterized in that the prominences (3) are tapered or pointed toward the outside or cylinder-shaped.
  6. Device in conformity with claim 1, characterized in that the prominences (3) have a circular, oval, polygonal, square or oblong cross-section.
  7. Device in conformity with claim 1, characterized in that the prominences (3) in the area (9) of a perforated drum jacket (2) with prominences (3) are arranged at distances between 1.5 mm and 20 mm, and preferably 3 mm to 10 mm.
  8. Device in conformity with claim 1, characterized in that the prominences (3) cover an area (9) of the perforated drum jacket (2) between 20% and 50%, preferably between 25% and 30%.
  9. Device in conformity with claim 1, characterized in that the areas (8) without prominences (3) represent a total area of 1 % to 50%, preferably between 20% and 50%, or between 25% and 30% of the total surface of the perforated drum (2).
  10. Device in conformity with claim 1, characterized in that the areas (9) containing prominences (3) and used for the formation of surface patterns in the web (5), such as animals, plants or geometrical shapes, are arranged in a corresponding layout or group on the perforated drum jacket (2).
  11. Device in conformity with claim 1, characterized in that the areas (8) not [containing] prominences (3) and the areas (9) [containing] prominences (3) for the formation of a surface pattern, such as animals, plants or geometrical shapes, are arranged in a corresponding layout or group.
  12. Device in conformity with claim 1, characterized in that the patterns formed in the web (5) are at least in part or predominantly in a level with the web (5) and that the web has an at least similar thickness, while the perforations introduced into the web (5) are distributed in such a way that they form one or more identically or differently shaped surface patterns in the web (5).
  13. Device in conformity with claim 1, characterized in that the areas (8) of the perforated drum jacket (2) not containing prominences (3) and the areas (9) containing prominences (3) form limited sections each.
  14. Device in conformity with claim 1, characterized in that the areas (8) of the perforated drum jacket (2) not containing prominences (3) are connected with each other or surround or include the areas (9) containing prominences (3).
  15. Device in conformity with claim 1, characterized in that the openings (4) in the perforated drum jacket (2) are evenly and/or irregularly distributed over the entire area of the perforated drum jacket (2) and have a diameter between 0.1 mm and 3 mm, preferably between 1 mm and 1.5 mm.
EP07785934A 2006-07-14 2007-07-07 Apparatus for producing textiles, nonwoven substances, spunbonded fabrics, paper materials and/or perforated films Active EP2041344B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006033071A DE102006033071A1 (en) 2006-07-14 2006-07-14 Apparatus for producing textiles, nonwovens, spunbonded nonwovens, paper materials
PCT/EP2007/006030 WO2008006522A1 (en) 2006-07-14 2007-07-07 Apparatus for producing textiles, nonwoven substances, spunbonded fabrics, paper materials and/or perforated films

Publications (2)

Publication Number Publication Date
EP2041344A1 EP2041344A1 (en) 2009-04-01
EP2041344B1 true EP2041344B1 (en) 2009-09-09

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US (1) US8082638B2 (en)
EP (1) EP2041344B1 (en)
CN (1) CN101400839B (en)
AT (1) ATE442471T1 (en)
DE (2) DE102006033071A1 (en)
ES (1) ES2330592T3 (en)
RU (1) RU2434086C2 (en)
WO (1) WO2008006522A1 (en)

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US8082638B2 (en) 2011-12-27
WO2008006522A1 (en) 2008-01-17
EP2041344A1 (en) 2009-04-01
RU2434086C2 (en) 2011-11-20
DE102006033071A1 (en) 2008-01-17
ATE442471T1 (en) 2009-09-15
CN101400839A (en) 2009-04-01
CN101400839B (en) 2011-01-19
US20090188090A1 (en) 2009-07-30
ES2330592T3 (en) 2009-12-11
DE502007001510D1 (en) 2009-10-22
RU2009104436A (en) 2010-08-27

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