WO2008080382A1 - Method and device for the production of a one-layered or multilayered nonwoven fabric - Google Patents

Method and device for the production of a one-layered or multilayered nonwoven fabric Download PDF

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Publication number
WO2008080382A1
WO2008080382A1 PCT/DE2007/002254 DE2007002254W WO2008080382A1 WO 2008080382 A1 WO2008080382 A1 WO 2008080382A1 DE 2007002254 W DE2007002254 W DE 2007002254W WO 2008080382 A1 WO2008080382 A1 WO 2008080382A1
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WO
WIPO (PCT)
Prior art keywords
drum
calender
fleece
nonwoven fabric
needling
Prior art date
Application number
PCT/DE2007/002254
Other languages
German (de)
French (fr)
Inventor
Ullrich MÜNSTERMANN
Original Assignee
Fleissner Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fleissner Gmbh filed Critical Fleissner Gmbh
Priority to US12/521,216 priority Critical patent/US20100015875A1/en
Priority to EP07856104A priority patent/EP2106468A1/en
Publication of WO2008080382A1 publication Critical patent/WO2008080382A1/en

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
    • D04H3/11—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by fluid jet
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H13/00—Other non-woven fabrics
    • 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
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/689—Hydroentangled nonwoven fabric

Definitions

  • the invention relates to a method for producing a monolayer or multi-layer nonwoven fabric according to the preamble of claim 1 and to a machine installation for producing such a nonwoven fabric and to a corresponding nonwoven fabric.
  • nonwoven fabric having a multiplicity of yarn-like fiber groups (EP 0 626 902 B1), these groups being connected at connection points by fibers which hear a multiplicity of these groups in order to limit a predetermined pattern of holes in the nonwoven fabric wherein the web has a clarity index of at least 0.5 and a calculated fiber bundle density of at least 0.14 grams per cubic centimeter.
  • the invention has for its object to improve a method and a manufacturing plant according to the respective preamble. Preferably, it should be achieved that projecting loops or fibrils no longer protrude from the nonwoven fabric and thus prevent withdrawal of individual filaments during use of the nonwoven fabric 5 can.
  • the object is achieved according to the invention in that the fleece is smoothed after the water needling with the help of a calender.
  • the nonwoven fabric is preferably a spunbonded nonwoven which is hydrodynamically needled, subsequently dried and then smoothed by means of a calender. This ensures that the protruding loops or fibrils, which are very disturbing in the use of, for example, single or multilayer nonwoven fabric, are welded by the calender in a simple manner and at the same time so smoothed that the pilling effect or the foot or linting is avoided.
  • the machine installation it is advantageous for the machine installation to have a spunbonded installation, by means of which the filaments are deposited on an endless belt configured as a screen belt, and at least one downstream needling device, a dryer connected thereto, and then at least one calender.
  • the machinery a spunbonded system, a downstream pressurized with low water pressure Vorvernadelungs issued and an adjoining second needling, which is associated with at least one structure drum with a suction box, and an adjoining dryer and then at least has a calender.
  • the machine installation has a spunbonded installation with the downstream pre-needling device that can be charged with low water pressure and the second needling device having at least one structure drum, an adjoining dryer and then at least one calender.
  • the machine installation has a spunbonded installation, via which the filaments are deposited on the structure drum, as well as the needling device directly associated with the structure drum, the dryer adjacent thereto and then at least the calender.
  • the machine installation has the spunbonded web with downstream pre-needling device which can be subjected to low water pressure and the second needle-forming device having at least one structure drum and a calender adjoining thereto.
  • the structural drum is associated with at least one conveyor drum such that the endless belt is guided in an S-shaped or in the form of two semicircles over the structure drum and the conveyor drum.
  • the endless belt can be designed as a conveyor and / or structural belt.
  • the invention relates to single-layer or multi-layer nonwovens which are additionally and advantageously perforated by one of the water needling processes.
  • Nonwovens having a basis weight of 7 to 300 g / m 2 are preferably processed.
  • the processing speed is at least 100 m / min.
  • the fiber thickness - filament thickness - is preferably between 0.4 and 10 dtex.
  • FIG. 1 is a schematic representation of a spunbonded system with a downstream, circumferential band on which the Fiia- be deposited and needling a Nadeladelungs overlooked and a dryer and a calender,
  • FIG. 2 shows a similar representation as in FIG. 1, but in which the endless belt is guided over the drums in an S-shaped or in the form of two semicircles,
  • FIG. 3 is a view similar to FIG. 1, but with the endless belt replaced by a drum;
  • FIG. 4 is a similar view as in Fig. 1, but in which the endless belt is formed only as a conveying member,
  • FIG. 5 shows a section of the endless belt or a section of a structure drum on which the filaments are deposited
  • Fig. 6 is a processed on the endless belt fleece with numerous openings.
  • a spunbonding system 1 is shown, with the aid of which endless filaments 4 are deposited on an endless belt 3 guided over four rollers 2 and transported further, at least one of the four rollers 2 being designed as a drive roller.
  • the endless belt 3 is illustrated in more detail in FIG. It consists of a screen belt with webs or wires 5 extending at right angles to one another and spaced apart, between which small approximately rectangular openings 6 are formed, so that water 8 emerging from a needling device 7.1 can pass through these openings 6. Due to the sieve belt 3, the water has to travel longer distances and the individual filaments are thereby moved according to FIG. borrowed and formed in a non-woven 14, depending on the design of the openings 6, corresponding openings 6.1 in the endless belt.
  • the nonwoven 14 passes through a dryer 9, which may be formed as an infrared through-air dryer. Thereafter, the fleece 14 is smoothed by means of a calender 10, so that still protruding filaments or loops or fibrils are pressed into the web 14.
  • a dryer 9 which may be formed as an infrared through-air dryer.
  • the fleece 14 is smoothed by means of a calender 10, so that still protruding filaments or loops or fibrils are pressed into the web 14.
  • the fleece 14 is fed by the endless belt 3 of the water needling device 7.1 with a suction box 7.3, so that at this point a rough pre-hardening of the fleece 14 takes place at low pressure.
  • the nonwoven fabric 14 is solidified in such a way that it can then be passed in an S shape or in the form of two semicircles via two drums 11 and 12, the second drum 12 being associated with a further needling device 7.2 with a suction box 7.3.
  • the fleece is received by the lower drum by means of a suction pressure and thus lifted by the drum 11 from the sieve belt and then taken up by the drum 11 and thereby forwarded in an S-shaped manner to the drum 12, which is associated with the suction box 7.3 and thus also the fleece 14 presses against the drum 12.
  • the first drum 11 is a transport drum
  • the second drum 12 is a structure drum which corresponds to the endless belt 3 according to FIG. 1 and is provided with numerous openings 6 according to the screen or endless belt 3 shown in FIG.
  • the endless belt is not formed in Fig. 2 as a perforating but only as a conveyor belt.
  • the fleece 14 is deposited on the conveyor belt 3, passed to the drum 11 and then held with the help of a negative pressure.
  • the perforation-forming openings provided in the drum 12 provide for the apertures 6.1 in the fleece 14 shown in FIG. 6 with the aid of the water needling device 7.1, 7.2.
  • the endless belt installation according to FIG. 1 is replaced by a structure drum 13 with the needling device 7.1 and the suction box 7.3.
  • the dryer 9 is not provided between the two deflection drums 11, 12 and the downstream calenders 10.

Abstract

The invention relates to a method for the production of a one-layered or multilayered nonwoven fabric, a machine for the production of such a nonwoven fabric, and a correspondingly produced nonwoven fabric. The task of improving such a method and a production apparatus underlies the invention to the effect that projecting loops and fibrils no longer stick out, and thus individual filaments can be prevented from pulling out during the use of the nonwoven fabric. According to the invention, this is achieved in that the nonwoven fabric (14) is smoothed after water needling by the use of a calender (10). The machine according to the invention is characterized by the fact that the machine has a spun bonded fabric (1), at least one subsequent needling device (7.1), a dryer (9) connected thereto, and thereafter at least one calender (10).

Description

Verfahren und Vorrichtung zur Herstellung eines ein- oder mehrlagigen Vlies Method and device for producing a monolayer or multilayer web
Die Erfindung betrifft ein Verfahren zur Herstellung eines ein- oder mehrlagigen Vlies gemäß dem Oberbegriff von Anspruch 1 sowie eine Maschinenanlage zur Herstellung eines solchen Vlieses sowie ein entsprechend herge-0 stelltes Vlies.The invention relates to a method for producing a monolayer or multi-layer nonwoven fabric according to the preamble of claim 1 and to a machine installation for producing such a nonwoven fabric and to a corresponding nonwoven fabric.
Es ist bereits ein Faservlies mit einer Vielzahl garnartiger Fasergruppen bekannt (EP 0 626 902 B1), wobei diese Gruppen an Verbindungspunkten durch Fasern verbunden sind, welche einer Vielzahl dieser Gruppen ange-5 hören, um ein vorgegebenes Muster von Löchern in dem Vlies zu begrenzen, wobei das Vlies einen Durchsichtigkeitsindex von mindestens 0,5 und eine berechnete Faserbündeldichte von mindestens 0,14 Gramm pro Kubikzentimeter hat. 0 Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren sowie eine Herstellungsanlage gemäß des jeweiligen Oberbegriffes zu verbessern. Vorzugsweise soll erreicht werden, dass abstehende Schlingen oder Fibrillen nicht mehr aus dem Vliesstoff hervorstehen und somit während des Gebrauchs des Vliesstoffes ein Herausziehen einzelner Filamente verhindert werden5 kann.There is already known a nonwoven fabric having a multiplicity of yarn-like fiber groups (EP 0 626 902 B1), these groups being connected at connection points by fibers which hear a multiplicity of these groups in order to limit a predetermined pattern of holes in the nonwoven fabric wherein the web has a clarity index of at least 0.5 and a calculated fiber bundle density of at least 0.14 grams per cubic centimeter. 0 The invention has for its object to improve a method and a manufacturing plant according to the respective preamble. Preferably, it should be achieved that projecting loops or fibrils no longer protrude from the nonwoven fabric and thus prevent withdrawal of individual filaments during use of the nonwoven fabric 5 can.
Gelöst wird die Aufgabe erfindungsgemäß dadurch, dass das Vlies nach der Wasservemadelung mit Hilfe eines Kalanders geglättet wird. Vorzugsweise ist das Vlies ein Spinnvlies, welches hydrodynamisch vernadelt, anschlie-0 ßend getrocknet und danach mittels eines Kalander geglättet wird. Hierdurch wird erreicht, dass die abstehenden Schlingen oder Fibrillen, die bei der Verwendung des beispielsweise ein- oder auch mehrlagigen Vlieses sehr störend sind, werden durch den Kalander auf einfache Weise festgeschweißt und gleichzeitig so geglättet, dass der Pillingeffekt bzw. das Fus- sein oder die Flusenbildung vermieden wird.The object is achieved according to the invention in that the fleece is smoothed after the water needling with the help of a calender. The nonwoven fabric is preferably a spunbonded nonwoven which is hydrodynamically needled, subsequently dried and then smoothed by means of a calender. This ensures that the protruding loops or fibrils, which are very disturbing in the use of, for example, single or multilayer nonwoven fabric, are welded by the calender in a simple manner and at the same time so smoothed that the pilling effect or the foot or linting is avoided.
Hierzu ist es vorteilhaft, dass die Maschinenanlage eine Spinnvliesanlage aufweist, über die die Filamente auf ein als Siebband ausgebildetes Endlosband abgelegt werden sowie mindestens eine nachgeschaltete Vernade- lungseinrichtung, einen sich daran anschließenden Trockner und danach zumindest einen Kalander.For this purpose, it is advantageous for the machine installation to have a spunbonded installation, by means of which the filaments are deposited on an endless belt configured as a screen belt, and at least one downstream needling device, a dryer connected thereto, and then at least one calender.
Eine zusätzliche Möglichkeit ist gemäß einer Weiterbildung der Erfindung, dass die Maschinenanlage eine Spinnvliesanlage, eine nachgeschaltete mit geringem Wasserdruck beaufschlagbare Vorvernadelungseinrichtung und eine sich daran anschließende zweite Vernadelungseinrichtung, der zumindest eine Strukturtrommel mit einem Saugkasten zugeordnet ist, sowie einen sich daran anschließenden Trockner und danach zumindest einen Kalander aufweist.An additional possibility, according to an embodiment of the invention, that the machinery a spunbonded system, a downstream pressurized with low water pressure Vorvernadelungseinrichtung and an adjoining second needling, which is associated with at least one structure drum with a suction box, and an adjoining dryer and then at least has a calender.
Ferner ist es vorteilhaft, dass die Maschinenanlage eine Spinnvliesanlage mit der nachgeschalteten, mit geringem Wasserdruck beaufschlagbaren Vorvernadelungseinrichtung und der sich daran anschließenden zweiten, zumindest eine Strukturtrommel aufweisenden Vernadelungseinrichtung, einen sich daran anschließenden Trockner und danach zumindest einen Kalander aufweist.Furthermore, it is advantageous that the machine installation has a spunbonded installation with the downstream pre-needling device that can be charged with low water pressure and the second needling device having at least one structure drum, an adjoining dryer and then at least one calender.
Vorteilhaft ist es hierzu auch, dass die Maschinenanlage eine Spinnvliesanlage aufweist, über die die Filamente auf die Strukturtrommel abgelegt wer- den sowie die der Strukturtrommel direkt zugeordnete Vernadelungseinrichtung, den sich daran anschließenden Trockner und danach zumindest den Kalander. Gemäß einer bevorzugten Ausführungsform der erfindungsgemäßen Lösung ist schließlich vorgesehen, dass die Maschinenanlage die Spinnvliesanlage mit nachgeschalteter, mit geringem Wasserdruck beaufschlagbare Vorver- nadelungseinrichtung und die sich daran anschließende zweite, zumindest eine Strukturtrommel aufweisende Vernadelungseinrichtung und einen sich daran anschließenden Kalander aufweist.It is also advantageous for this purpose that the machine installation has a spunbonded installation, via which the filaments are deposited on the structure drum, as well as the needling device directly associated with the structure drum, the dryer adjacent thereto and then at least the calender. According to a preferred embodiment of the solution according to the invention, it is finally provided that the machine installation has the spunbonded web with downstream pre-needling device which can be subjected to low water pressure and the second needle-forming device having at least one structure drum and a calender adjoining thereto.
Von besonderer Bedeutung ist für die vorliegende Erfindung, dass der Struk- tur-trommel zumindest eine Fördertrommel derart zugeordnet ist, dass das Endlosband s-förmig bzw. in der Form von zwei Halbkreisen über die Strukturtrommel und die Fördertrommel geführt wird. Mit den unterschiedlichen Maschinenanlagen lässt sich auf kostengünstige Weise ein optimales nicht fusselndes Vlies herstellen, das für extremen Einsatz verwendet werden kann.Of particular importance for the present invention is that the structural drum is associated with at least one conveyor drum such that the endless belt is guided in an S-shaped or in the form of two semicircles over the structure drum and the conveyor drum. With the different machine systems can be produced in an inexpensive way an optimal non-fluffing fleece that can be used for extreme use.
Im Zusammenhang mit der erfindungsgemäßen Ausbildung und Anordnung ist es von Vorteil, dass das Endlosband als Förder- und/oder Strukturband ausgebildet sein kann.In connection with the design and arrangement according to the invention, it is advantageous that the endless belt can be designed as a conveyor and / or structural belt.
Die Erfindung bezieht sich auf ein- oder mehrlagige Vliese, welche zusätzlich und in vorteilhafter Weise durch einen der Wasservernadelungsvorgän- ge perforiert werden. Bevorzugt werden Vliese mit einem Flächengewicht von 7 - 300 g/m2 verarbeitet. Die Verarbeitungsgeschwindigkeit beträgt wenigstens 100 m/min. Die Faserstärke - Filamentstärke - beträgt bevorzugt zwischen 0,4 und 10 dtex.The invention relates to single-layer or multi-layer nonwovens which are additionally and advantageously perforated by one of the water needling processes. Nonwovens having a basis weight of 7 to 300 g / m 2 are preferably processed. The processing speed is at least 100 m / min. The fiber thickness - filament thickness - is preferably between 0.4 and 10 dtex.
Weitere Vorteile und Einzelheiten der Erfindung sind in den Patentansprüchen und in der Beschreibung erläutert und in den Figuren dargestellt.Further advantages and details of the invention are explained in the patent claims and in the description and illustrated in the figures.
Es zeigen:Show it:
Fig. 1 eine schematische Darstellung einer Spinnvliesanlage mit einem nachgeordneten, umlaufenden Band, auf dem die FiIa- mente abgelegt werden und einer Vernadelungseinrichtung sowie einem Trockner und einer Kalandereinrichtung,1 is a schematic representation of a spunbonded system with a downstream, circumferential band on which the Fiia- be deposited and needling a Nadeladelungseinrichtung and a dryer and a calender,
Fig. 2 eine ähnliche Darstellung wie in Fig. 1, bei der jedoch das End- losband s-förmig bzw. in der Form von zwei Halbkreisen über die Trommeln geleitet wird,2 shows a similar representation as in FIG. 1, but in which the endless belt is guided over the drums in an S-shaped or in the form of two semicircles,
Fig. 3 eine ähnliche Darstellung wie in Fig. 1, bei der jedoch das Endlosband durch eine Trommel ersetzt ist,FIG. 3 is a view similar to FIG. 1, but with the endless belt replaced by a drum; FIG.
Fig. 4 eine ähnliche Darstellung wie in Fig. 1 , bei der jedoch das Endlosband nur als Förderorgan ausgebildet ist,4 is a similar view as in Fig. 1, but in which the endless belt is formed only as a conveying member,
Fig. 5 einen Ausschnitt des Endlosbandes bzw. einen Ausschnitt aus einer Strukturtrommel, auf denen die Filamente abgelegt werden,5 shows a section of the endless belt or a section of a structure drum on which the filaments are deposited, FIG.
Fig. 6 ein auf dem Endlosband bearbeitetes Vlies mit zahlreichen Öffnungen.Fig. 6 is a processed on the endless belt fleece with numerous openings.
In der Zeichnung ist eine Spinnvliesanlage 1 dargestellt, mit deren Hilfe End- losfilamente 4 auf ein über vier Rollen 2 geleitetes Endlosband 3 abgelegt und weiter transportiert wird, wobei zumindest eine der vier Rollen 2 als Antriebsrolle ausgebildet ist.In the drawing, a spunbonding system 1 is shown, with the aid of which endless filaments 4 are deposited on an endless belt 3 guided over four rollers 2 and transported further, at least one of the four rollers 2 being designed as a drive roller.
Das Endlosband 3 ist in Fig. 5 näher veranschaulicht. Es besteht aus einem Siebband mit rechtwinklig zu einander verlaufenden und mit Abstand zueinander angeordneten Stegen oder Drähten 5, zwischen denen kleine in etwa rechteckförmige Öffnungen 6 gebildet sind, so dass aus einer Vernade- lungseinrichtung 7.1 austretendes Wasser 8 durch diese Öffnungen 6 hindurchtreten kann. Durch das Siebband 3 muss das Wasser größere Wege zurücklegen und die einzelnen Filamente werden gemäß Fig. 6 dadurch seit- lieh verschoben und in einem Vlies 14, je nach Gestaltung der Öffnungen 6, im Endlosband 3 entsprechende Öffnungen 6.1 gebildet.The endless belt 3 is illustrated in more detail in FIG. It consists of a screen belt with webs or wires 5 extending at right angles to one another and spaced apart, between which small approximately rectangular openings 6 are formed, so that water 8 emerging from a needling device 7.1 can pass through these openings 6. Due to the sieve belt 3, the water has to travel longer distances and the individual filaments are thereby moved according to FIG. borrowed and formed in a non-woven 14, depending on the design of the openings 6, corresponding openings 6.1 in the endless belt.
Nach dem Vernadelungsvorgang durchläuft das Vlies 14 einen Trockner 9, der als Infrarot-Durchlufttrockner ausgebildet sein kann. Danach wird das Vlies 14 mit Hilfe eines Kalanders 10 geglättet, so dass noch abstehende Filamente bzw. Schlaufen oder Fibrillen in das Vlies 14 gedrückt werden.After the needling process, the nonwoven 14 passes through a dryer 9, which may be formed as an infrared through-air dryer. Thereafter, the fleece 14 is smoothed by means of a calender 10, so that still protruding filaments or loops or fibrils are pressed into the web 14.
Diese abstehenden Schlingen oder Fibrillen werden durch den nachfolgen- den Kalander 10 fest geschweißt und gleichzeitig auch an die Oberfläche des Vlieses 14 gedrückt.These protruding loops or fibrils are firmly welded by the following calender 10 and simultaneously pressed against the surface of the fleece 14 as well.
Der zuvor beschriebene Arbeitsprozess und die Behandlung des Vlieses 14 erfolgt auf ähnliche Weise mit den Anlagen gemäß Fig. 2 bis 4.The working process described above and the treatment of the fleece 14 is carried out in a similar manner with the systems according to FIGS. 2 to 4.
Im Ausführungsbeispiel gemäß Fig. 2 wird das Vlies 14 von dem Endlosband 3 der Wasservernadelungseinrichtung 7.1 mit einem Saugkasten 7.3 zugeführt, so dass an dieser Stelle eine grobe Vorfestigung des Vlieses 14 mit geringem Druck stattfindet. Hierdurch wird das Vlies 14 so verfestigt, dass es danach s-förmig bzw. in der Form von zwei Halbkreisen über zwei Trommeln 11 und 12 geleitet werden kann, wobei der zweiten Trommel 12 eine weitere Vernadelungseinrichtung 7.2 mit einem Saugkasten 7.3 zugeordnet ist. Gemäß Fig. 4 wird das Vlies von unteren Trommel mit Hilfe eines Saugdrucks aufgenommen und somit mit Hilfe der Trommel 11 von dem Siebband abgehoben und dann von der Trommel 11 aufgenommen und dabei s-förmig an die Trommel 12 weitergeleitet, der der Saugkasten 7.3 zugeordnet ist und damit auch das Vlies 14 an die Trommel 12 drückt.In the exemplary embodiment according to FIG. 2, the fleece 14 is fed by the endless belt 3 of the water needling device 7.1 with a suction box 7.3, so that at this point a rough pre-hardening of the fleece 14 takes place at low pressure. As a result, the nonwoven fabric 14 is solidified in such a way that it can then be passed in an S shape or in the form of two semicircles via two drums 11 and 12, the second drum 12 being associated with a further needling device 7.2 with a suction box 7.3. According to FIG. 4, the fleece is received by the lower drum by means of a suction pressure and thus lifted by the drum 11 from the sieve belt and then taken up by the drum 11 and thereby forwarded in an S-shaped manner to the drum 12, which is associated with the suction box 7.3 and thus also the fleece 14 presses against the drum 12.
Die erste Trommel 11 ist eine Transporttrommel, während die zweite Trom- mel 12 eine Strukturtrommel ist, die dem Endlosband 3 gemäß Fig. 1 entspricht und gemäß des in Fig. 5 dargestellten Sieb- oder Endlosbandes 3 mit zahlreichen Öffnungen 6 versehen ist. Das Endlosband ist in Fig. 2 nicht als Perforierband sondern lediglich als Transportband ausgebildet. Das Vlies 14 wird auf dem Transportband 3 abgelegt, der Trommel 11 übergeben und dann mit Hilfe eines Unterdrucks festgehalten. Die in der Trommel 12 vorgesehenen perforationsbildenden Öffnungen sorgen mit Hilfe der Wasserver- nadelungseinrichtung 7.1 , 7.2 für die in Fig. 6 dargestellten Öffnungen 6.1 im Vlies 14.The first drum 11 is a transport drum, while the second drum 12 is a structure drum which corresponds to the endless belt 3 according to FIG. 1 and is provided with numerous openings 6 according to the screen or endless belt 3 shown in FIG. The endless belt is not formed in Fig. 2 as a perforating but only as a conveyor belt. The fleece 14 is deposited on the conveyor belt 3, passed to the drum 11 and then held with the help of a negative pressure. The perforation-forming openings provided in the drum 12 provide for the apertures 6.1 in the fleece 14 shown in FIG. 6 with the aid of the water needling device 7.1, 7.2.
Im Ausführungsbeispiel gemäß Fig. 3 ist die Endlosbandanlage gemäß Fig. 1 durch eine Strukturtrommel 13 mit der Vernadelungseinrichtung 7.1 und dem Absaugkasten 7.3 ersetzt.In the embodiment according to FIG. 3, the endless belt installation according to FIG. 1 is replaced by a structure drum 13 with the needling device 7.1 and the suction box 7.3.
Im Ausführungsbeispiel gemäß Fig. 4 ist zwischen den beiden Umlenktrommeln 11 , 12 und den nachgeschalteten Kalandern 10 der Trockner 9 nicht vorgesehen. In the embodiment according to FIG. 4, the dryer 9 is not provided between the two deflection drums 11, 12 and the downstream calenders 10.
Bezugszeichenliste:LIST OF REFERENCE NUMBERS
1 Spinnvliesanlage1 spunbonding system
2 Rolle2 roll
3 Endlosband, Transportband, Siebband3 endless belt, conveyor belt, sieve belt
4 Endlosfilament4 continuous filament
5 Steg, Draht 0 6 Öffnung im Endlosband5 bridge, wire 0 6 Opening in the endless belt
6.1 Öffnung im Vlies6.1 opening in the fleece
7.1 Vernadelungseinrichtung7.1 needling device
7.2 Vernadelungseinrichtung7.2 needling device
7.3 Saugkasten 5 8 Wasser7.3 Suction box 5 8 Water
9 Trockner9 dryers
10 Kalander10 calenders
11 Fördertrommel11 conveyor drum
12 Strukturtrommel 0 13 Strukturtrommel12 Structure drum 0 13 Structure drum
14 Vlies 14 fleece

Claims

Ansprüche: Claims:
1. Verfahren zur Herstellung eines ein- oder mehrlagigen Vlies (14) mit einer Vielzahl garnartiger Fasergruppen oder Endlosfilamenten (4), die zumindest im Bereich von Verbindungsstellen miteinander verbunden sind, dadurch gekennzeichnet, dass das Vlies (14) nach der Wasservernadelung mit Hilfe eines Kalanders (10) geglättet wird.1. A process for producing a monolayer or multilayer web (14) with a plurality of yarn-like fiber groups or continuous filaments (4), which are connected at least in the region of joints, characterized in that the fleece (14) after the water needling with the help of a Calender (10) is smoothed.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass das Vlies (14) nach der Wasservernadelung mit Hilfe eines Kalanders (10) geglättet ist und der Kalander so eingestellt ist, dass die Zugfestigkeit des Vlieses in Förderrichtung zu mehr als 90% erhalten bleibt.2. The method according to claim 1, characterized in that the fleece (14) after the water needling with the aid of a calender (10) is smoothed and the calender is adjusted so that the tensile strength of the web in the conveying direction is maintained to more than 90%.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Vlies (14) gegenüber der Wasservernadelung in seinem Volumen um 25% bis 15% oder 22% bis 18% oder um ca. 20% reduziert wird.3. The method according to claim 1 or 2, characterized in that the fleece (14) is reduced relative to the water needling in its volume by 25% to 15% or 22% to 18% or by about 20%.
4. Verfahren nach Anspruch 1 , 2 oder 3, dadurch gekennzeichnet, dass die Pressfläche in etwa zwischen 16% bis 25% oder zwischen 17% bis 22% oder zwischen 18% bis 20% der Gesamtfläche des Vlieses (14) beträgt. 4. The method of claim 1, 2 or 3, characterized in that the pressing surface is approximately between 16% to 25% or between 17% to 22% or between 18% to 20% of the total area of the web (14).
5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Vlies (14) mit Glattwalzentemperatur zwischen 120° und 155° oder zwischen 125° und 150° oder zwischen 130° und 150° oder zwischen 140° und 1500C behandelt wird.5. The method according to any one of the preceding claims, characterized in that the fleece (14) is treated with a smooth roll temperature between 120 ° and 155 ° or between 125 ° and 150 ° or between 130 ° and 150 ° or between 140 ° and 150 0 C. ,
6. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Vlies (14) mit einer Gravurtemperatur zwischen 120° und 155° o- der zwischen 125° und 150° oder zwischen 130° und 150° oder zwischen 140° und 1500C behandelt wird.6. The method according to any one of the preceding claims, characterized in that the nonwoven fabric (14) with a gravure temperature between 120 ° and 155 ° o- between 125 ° and 150 ° or between 130 ° and 150 ° or between 140 ° and 150 0th C is treated.
7. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Vlies (14) mit einer Gravurtemperatur in etwa zwischen 120° und 155° oder zwischen 125° und 150° oder zwischen 130° und 150° oder zwi- sehen 140° und 15O0C behandelt wird und bei einer Nachkalandrierung mit einem Liniendruck zwischen 20 bis 30 oder zwischen 24 bis 28 N/mm gearbeitet wird.7. The method according to any one of the preceding claims, characterized in that the nonwoven fabric (14) with a gravure temperature in approximately between 120 ° and 155 ° or between 125 ° and 150 ° or between 130 ° and 150 ° or see between 140 ° and 15O 0 C is treated and is used in a Nachkalandrierung with a line pressure between 20 to 30 or between 24 to 28 N / mm.
8. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zwischen Wasservernadelung und Kalandrierung eine Trocknung erfolgt.8. The method according to any one of the preceding claims, characterized in that drying takes place between water needling and calendering.
9. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Vlies (14) durch die Wasservemadelung eine Perforation (Öffnungen 6.1) erfährt.9. Method according to one of the preceding claims, characterized in that the fleece (14) undergoes a perforation (openings 6.1) as a result of the water needling.
10. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein Vlies (14) mit einem Flächengewicht von 7 bis 300 g/m2 verarbeitet wird.10. The method according to any one of the preceding claims, characterized in that a nonwoven fabric (14) having a basis weight of 7 to 300 g / m 2 is processed.
11. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Verarbeitungsgeschwindigkeit wenigstens 100 m/min beträgt.11. The method according to any one of the preceding claims, characterized in that the processing speed is at least 100 m / min.
12. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Vlies (14) eine Faserstärke (Durchmesser der Filamente) von 0,4 - 10 dtex aufweist.12. The method according to any one of the preceding claims, characterized in that the fleece (14) has a fiber thickness (diameter of the filaments) of 0.4 - 10 dtex.
13. Anlage zur Durchführung des Herstellungsverfahrens nach einem oder mehreren der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass die Maschinenanlage eine Spinnvliesanlage (1), mindestens eine nachgeschaltete Vernadelungseinrichtung (7.1), einen sich daran anschließenden Trockner (9) und danach zumindest einen Kalander (10) aufweist.13. Plant for carrying out the manufacturing method according to one or more of claims 1 to 12, characterized in that the machine a spunbonding system (1), at least one downstream needling device (7.1), an adjoining dryer (9) and then at least one calender (10).
14. Anlage nach Anspruch 13, dadurch gekennzeichnet, dass die Maschinenanlage eine Spinnvliesanlage (1) aufweist, über die die Filamente (4) auf ein als Siebband ausgebildetes Endlosband (3) abgelegt werden sowie mindestens eine nachgeschaltete Vernadelungseinrichtung (7.1), einen sich daran anschließenden Trockner (9) und danach zumindest einen Kalander (10).14. Plant according to claim 13, characterized in that the machine installation has a spunbonding installation (1), via which the filaments (4) are laid down on an endless belt (3) designed as a sieve belt and at least one downstream needling device (7.1), an adjoining dryer (9) and then at least one calender (10).
15. Anlage nach Anspruch 13 oder 14, dadurch gekennzeichnet, dass die Maschinenanlage aufweist: - eine Spinnvliesanlage (1),15. Plant according to claim 13 or 14, characterized in that the machine installation comprises: - a spunbonded installation (1),
- eine dieser nachgeschaltete, mit geringem Wasserdruck beaufschlagbare Vorvemadelungseinrichtung (7.1),- One of these downstream, can be acted upon with low water prespraying (7.1),
- eine sich daran anschließende zweite Vernadelungseinrichtung (7.2), der zumindest eine Strukturtrommel (12) mit einem Saugkasten (7.3) zugeordnet ist,- An adjoining second needling device (7.2), which is associated with at least one structure drum (12) with a suction box (7.3),
- einen sich daran anschließenden Trockner (9)- a subsequent dryer (9)
- danach zumindest einen Kalander (10).- Then at least one calender (10).
16. Anlage nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Maschinenanlage eine Spinnvliesanlage (1) aufweist, über welche die Filamente auf einer Trommel (12) abgelegt werden sowie einer der Trommel (12) direkt zugeordnete Vernadelungseinrichtung (7.1), den sich daran anschließenden Trockner (9) und danach zumindest den Kalander 10.16. Installation according to one of the preceding claims, characterized in that the machine system comprises a spunbonding system (1) over which the filaments are deposited on a drum (12) and one of the drum (12) directly associated needling (7.1), the adjoining dryer (9) and then at least the calender 10th
17. Anlage nach Anspruch 16, dadurch gekennzeichnet, dass die Trommel als eine Strukturtrommel (12) ausgebildet ist. 17. Plant according to claim 16, characterized in that the drum is designed as a structure drum (12).
18. Anlage nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Strukturtrommel (12) zumindest eine Fördertrommel (11) derart zugeordnet ist, dass das Endlosband (3) s-förmig bzw. in der Form von zwei Halbkreisen über die Strukturtrommel (12) und die Fördertrommel (11) geführt wird.18. Plant according to one of the preceding claims, characterized in that the textured drum (12) is associated with at least one conveyor drum (11) such that the endless belt (3) s-shaped or in the form of two semicircles on the structure drum (12 ) and the conveyor drum (11) is guided.
19. Anlage nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Endlosband (3) als Förder- und/oder Strukturband ausgebildet ist.19. Installation according to one of the preceding claims, characterized in that the endless belt (3) is designed as a conveyor and / or structural band.
20. Vlies, dadurch gekennzeichnet, dass das Vlies nach einem der Verfahrensansprüche 1 - 12 hergestellt ist. 20. fleece, characterized in that the nonwoven fabric according to one of the method claims 1 - 12 is made.
PCT/DE2007/002254 2007-01-05 2007-12-13 Method and device for the production of a one-layered or multilayered nonwoven fabric WO2008080382A1 (en)

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EP07856104A EP2106468A1 (en) 2007-01-05 2007-12-13 Method and device for the production of a one-layered or multilayered nonwoven fabric

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RU2746917C2 (en) * 2016-12-14 2021-04-22 ПФНОНВОВЕНС ЭлЭлСи Hydraulically processed nonwoven materials and a method for their production
CN112928184B (en) * 2021-01-26 2022-05-31 徐州中辉光伏科技有限公司 Silicon chip texturing device convenient for uniform contact with solution

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