EP1178142A1 - Method and apparatus for making a spunbonded nonwoven - Google Patents

Method and apparatus for making a spunbonded nonwoven Download PDF

Info

Publication number
EP1178142A1
EP1178142A1 EP01113039A EP01113039A EP1178142A1 EP 1178142 A1 EP1178142 A1 EP 1178142A1 EP 01113039 A EP01113039 A EP 01113039A EP 01113039 A EP01113039 A EP 01113039A EP 1178142 A1 EP1178142 A1 EP 1178142A1
Authority
EP
European Patent Office
Prior art keywords
air
nozzles
blow
filaments
thread sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01113039A
Other languages
German (de)
French (fr)
Other versions
EP1178142B1 (en
Inventor
Michael Hess
Engelbert Löcher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carl Freudenberg KG filed Critical Carl Freudenberg KG
Publication of EP1178142A1 publication Critical patent/EP1178142A1/en
Application granted granted Critical
Publication of EP1178142B1 publication Critical patent/EP1178142B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D04H3/16—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 filaments produced in association with filament formation, e.g. immediately following extrusion
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
    • 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]
    • Y10T442/681—Spun-bonded nonwoven fabric

Definitions

  • spunbonded nonwovens suitable devices
  • starting materials are thermoplastic polymers used that melted to fine Spun threads are spun.
  • the spun threads are mostly aerodynamically stretched and thereby get the desired strength.
  • the threads are deposited after the spinning process or under Interposition of coils on a storage belt on which they come to lie on top of each other and form the spunbond.
  • DE-AS 1 303 569 describes a method for producing nonwovens known in which the spun threads are guided through a channel be stretched aerodynamically there and then on one perforated, moving pad in fleece form.
  • a turbulence zone is provided below the air duct Cross-threading supported.
  • the result is a very irregular one Fleece image.
  • a high uniformity of the spunbonded web is achieved that several guide channels are provided one after the other and the resulting ones protruding layers of thread in layers one above the other to form a fleece be filed.
  • the spinning beam together with the thread take-off device rotatable train is also intended to eliminate the disadvantages associated with So-called curtain procedures occur and in certain areas can lead to overlays of individual filaments.
  • the nonwoven has a preferred strength in Longitudinal direction, i.e. in the direction of production, while the strength values in Transverse direction are lower. Due to the inclination of the spinning beam together with the laying and stretching device, this should be compensated.
  • the invention has for its object a method with associated Device to produce a spunbond with the very one high uniformity of the fleece structure and basis weight distribution can be achieved.
  • the Strength in the transverse direction should, for example, be the same as the strength in Longitudinal direction.
  • the invention is based on a method for producing a Spunbonded fabric by spinning a juxtaposed parallel linear thread sheet in the form of a curtain from a variety of Spin capillaries with aerodynamic pulling and stretching of the Yarn sheet.
  • the stretching channel emerging or withdrawn from a bobbin of thread from an air stream moved laterally with periodically changing directions, the Air flow seen in a horizontal plane at an angle to the thread sheet is alternately aligned. Individual air blasts in changing directions cause the coulter to cross back and forth across the production direction is moved, which leads to the desired fleece structure, for example one high uniformity in structure.
  • the air flows can be carried out alternately from left and right. It turned out to be beneficial if between the individual air flows Air breaks are inserted, where there is no air blast and the one a vertical alignment of the thread sheet between the air blasts allow.
  • the general direction of air flow is perpendicular to the Thread cluster directed. This is a blow-out angle in the horizontal plane selected from 15 °. Other discharge angles are as needed of course possible.
  • the vertical blow-out direction is also possible Align it diagonally downwards to the thread sheet.
  • the Blow-out angle in the vertical plane can be 15 °.
  • the device for performing the method consists of a Spinning beams with a large number of spinning capillaries lying in a row with a cooling air shaft and stretching duct and a storage belt.
  • the device is below the stretching channel before and / or at least one blow duct arranged behind the thread sheet with in seen horizontal plane obliquely to the thread sheet Air outlet nozzles.
  • the air outlet nozzles are arranged so that they can alternately blow an air stream in different directions and seen from the left or right on the thread coulter. It is favorable if at least two arranged parallel to each other Air outlet nozzle rows are provided, the nozzles one row are oriented opposite to the nozzles of the other row.
  • the Air is supplied to the nozzles one after the other, so that once the nozzles to the left and once the nozzles to the right are pressurized with air.
  • the air supply to the nozzles is one by one Closure completed.
  • it is also possible to use the nozzles yourself To provide closures and to close the nozzles one row at a time and open the other row.
  • a rotatable roller can be provided to close off the nozzles, which is hollow and provided with longitudinal slots.
  • the nozzles can be inserted at an angle to their through corrugated sheet-like inserts Longitudinal corrugations are formed, which in the nozzle wall are inserted. They are preferably interchangeable, so that through them passing volume flow or the flow direction or whose angle can be easily changed.
  • the nozzle wall is provided with longitudinal slots lying one above the other correspond to the longitudinal slots in the roller.
  • a special one favorable embodiment provides the arrangement of an air storage space in Blow chute in front, between the nozzle wall and one on the roller lying sealing wall is arranged. This will make it a very even one Actuation of the nozzles reached.
  • the air storage space is divided into two chambers by an intermediate plate, which the respective upper and lower longitudinal slots of the sealing wall and are assigned to the upper and lower nozzles in the nozzle wall.
  • the roller in turn is in a longitudinal channel filled with compressed air arranged, which is connected to a compressed air reservoir.
  • the rotating roller has the advantage that even with larger ones Production widths a uniform pressure at the nozzles over the entire Production range is pending.
  • the outlet angles of the nozzles of both rows of nozzles are preferably the same, which means that the thread array has the same design in both directions is achieved.
  • the blow-out angles are 10 to 60 °, preferably 45 °.
  • an adjustable mechanical air duct to control the Direction of air flow may be provided below the Blasschachtes.
  • This air flow can pivotable wing flaps or consist of Coander shells, through which the thread sheet moves back and forth in the production direction can be.
  • the preferred embodiment provides opposite the blow shaft on the other front of the thread coulter Attach air baffle adjustable to the blow chute. Because of this Air baffle supports the direction of the side air flow and the lateral pivoting movement of the thread sheet can be stronger or less strong can be adjusted by moving the air baffle closer to the blow duct is introduced or removed from it.
  • FIG. 1 In Fig. 1, four individual steps A, B, C and D of the Procedure illustrated. Through the vertical lines 1 are Front walls of a blow duct 3 illustrated. With 2 is one Air baffle designated. The points 4 are the individual threads of the Play thread coulter. By arrow 5 is the direction of movement Storage tape displayed. The curved arrows 6 and 7 indicate the Flow direction of the air flow again.
  • the thread group is made up of the Threads 4 seen from their direction of production once to the right, see Step B, and once to the left, see Step D, moved. Between these Movements, the air flow is stopped, so that the thread coulter itself can align vertically, as shown in steps A and C. From the Blasschacht 3, which is seen in the production direction on the back of the Threads are located periodically from the nozzles provided once the air to the right, see step B, and once the air to the left, see step D, blown out. Located on the front of the thread family the air baffle 2, which is provided with an adjustment mechanism and whose distance from the blow chute 3 is adjustable.
  • the deposition of a single thread 4 is shown schematically at the bottom of the figure and it can be seen that the thread 4 is a when it is deposited Performs movement that results in the shape of an eight on the shelf.
  • Fig. 2 is the blow duct 3 with the one above the other in rows Air outlet nozzles 10 and 11 shown.
  • the from the stretching channel 12 emerging thread sheet 8 is through the emerging from the nozzles 10 Airflow initially deflected to the right, which is due to the extended Dashes of the thread group 8 is shown.
  • the thread sheet 8 is again aligned vertically and will be in the further Step through the air flow from the air outlet nozzles 11 into the opposite direction, what with the dotted lines of the Thread cluster 8 is displayed. It should be noted that this representation only schematically represents the principle of the method.
  • nozzles 10 and 11 of the blow shaft 3 are in plan view shown. Arrows 6 and 7 indicate the direction of flow of the air flow on.
  • the blow duct 3 is equipped with an intermediate plate, which the separate spaces for the nozzles 10 and 11 from each other. This is it is possible to separate each room of the blow duct 3 with compressed air supply.
  • the Blasschacht 3 has that Nozzles 10 and 11 from which the air flows 6 and 7 emerge.
  • the Intermediate sheet 14 is the blow duct 3 in two chambers 15 and 16 divided, via which compressed air is fed to the nozzles 10 and 11.
  • the Blasschacht 3 opposite the air baffle 2 is attached, the suitable adjustment mechanisms moved in the direction of the blow shaft 3 can be what is indicated by the double arrow 21.
  • the wing flap 22 is provided, which is about the axis 23 can be pivoted, as indicated by the arrow 24. From the stretching channel 12 emerging thread sheet 8 is by the Air flows from the air outlet nozzles 10 and 11 laterally back and forth emotional. Through the wing flap 22, the sheet 8 is additionally in Production direction swung back and forth. That on the storage belt 13 forming fleece has an exceptionally high uniformity and same basis weight distribution.
  • FIG. 5 shows the preferred embodiment, in which the hollow and roller 30 provided with slots 31 in the blow chute 3 in one separate longitudinal channel 40 is arranged.
  • an air storage space 32 is present, which in two over the intermediate plate 14 Chambers 15 and 16 is divided.
  • the nozzles 10 are in the nozzle wall 33 and 11 arranged in rows one above the other. They are made of corrugated iron Chambers 15 and 16 is divided.
  • the nozzles 10 are in the nozzle wall 33 and 11 arranged in rows one above the other. They are made of corrugated iron Deposits 35 formed, at an angle to their longitudinal direction (for Machine width) running corrugations. The deposits are 35 replaceable.
  • the sealing wall 34 has one above the other Longitudinal slots 36, which with the longitudinal slots 31 in the roller 30th correspond.
  • the longitudinal slots 31 and 36 are so on top of each other matched that the compressed air is only either the upper chamber 15 or the lower chamber 16 is supplied.
  • the air flow from the Longitudinal channel 40 in the chambers 15 and 16 can be varied.
  • the longitudinal channel 40 is connected via a plurality of connecting pieces 42 with one parallel to the Longitudinal channel 40 extending compressed air reservoir 41 connected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

To produce a spun-bonded nonwoven fabric, melt spun polymer filaments are delivered in a falling curtain parallel to each other with an aerodynamic take-off and drawing action. The band of filaments (8), taken from the drawing channel (12) or a bobbin, are carried by an airstream with periodic direction changes in lateral side movements. The airstream is aligned at an angle to the band of filaments, in an alternating sequence as seen on a horizontal plane. To produce a spun-bonded nonwoven fabric, there are pauses between the airstream flow direction changes. The air blowing direction is at right angles to the band of filaments, at 15 degrees to the horizontal plane and at a downwards angle of 15 degrees on the vertical plane. The air blowing direction is at the front or the rear of the band of filaments. After movement through the alternating airstream flows, the filaments are given an additional movement through guide surfaces which have a periodic filament deflection action e.g. swing flaps and the like. An Independent claim is included for an assembly to produce spun-bonded nonwoven fabrics with at least one blower shaft (3) under the drawing channel, in front of and/or behind the band of filaments. It has air outlet jets (10,11) aligned at an angle to the band of filaments. Preferred Features: The air blower jets are in at least two parallel rows, with the jets in one row on an opposing orientation to the jets of the other row. The air flow can be blocked to each of the air jet rows, using a hollow rotating roller fitted with longitudinal slits. The roller is within a longitudinal channel, filled with compressed air and linked to a compressed air supply. The air jets can be formed by exchangeable corrugated sheet inserts, with the corrugations at an angle to the longitudinal axis of the sheets, laid in the jet wall. The sealing wall has overlaid longitudinal slits, which correspond with the slits in the hollow roller. The blower shaft has an air build-up zone, between the jet and sealing walls to the roller. The air build-up zone is separated into two chambers (15,16) by a dividing wall (14), for the upper and lower slits and jets. The jets deliver airstreams at the same angle in each row of 10-60 degrees and preferably 45 degrees . An adjustable air guide plate (2) is at the side of the band of filaments opposite the blower shaft, in the air blowing direction. An adjustable and mechanical air guide is under the blower shaft, to control the airstream flow direction, using a swing wing flap (22) or shells.

Description

Technisches GebietTechnical field

Für die Erstellung von Spinnvliesen sind verschiedene Verfahren und dafür geeignete Vorrichtungen bekannt. Als Ausgangsmaterialien werden thermoplastische Polymere verwendet, die aufgeschmolzen zu feinen Spinnfäden versponnen werden. Die ersponnenen Fäden werden meist aerodynamisch verstreckt und erhalten dadurch die gewünschte Festigkeit. Die Ablage der Fäden erfolgt nach dem Spinnvorgang oder auch unter Zwischenschaltung von Spulen auf einem Ablageband auf dem sie übereinander zu liegen kommen und das Spinnvlies bilden.There are various processes for creating spunbonded nonwovens suitable devices known. As starting materials are thermoplastic polymers used that melted to fine Spun threads are spun. The spun threads are mostly aerodynamically stretched and thereby get the desired strength. The threads are deposited after the spinning process or under Interposition of coils on a storage belt on which they come to lie on top of each other and form the spunbond.

Stand der TechnikState of the art

In der DE-AS 1 303 569 ist ein Verfahren zum Herstellen von Vliesen bekannt bei dem die ausgesponnenen Fäden durch einen Kanal geführt werden, dort aerodynamisch verstreckt werden und danach auf einer perforierten, sich fortbewegenden Unterlage in Vliesform abgelegt werden. DE-AS 1 303 569 describes a method for producing nonwovens known in which the spun threads are guided through a channel be stretched aerodynamically there and then on one perforated, moving pad in fleece form.

Um die statistisch ungeordnete Ablage der Fäden zu gewährleisten, ist unterhalb des Luftführungskanals eine Turbulenzzone vorgesehen, die ein Überkreuzlegen der Fäden unterstützt. Es entsteht ein sehr unregelmäßiges Vliesbild. Eine hohe Gleichmäßigkeit des Spinnvlieses wird dadurch erreicht, dass hintereinander mehrere Führungskanäle vorgesehen und die daraus hervortretenden Fadenscharen schichtmäßig übereinander zu einem Vlies abgelegt werden.To ensure the statistically unordered filing of the threads is A turbulence zone is provided below the air duct Cross-threading supported. The result is a very irregular one Fleece image. A high uniformity of the spunbonded web is achieved that several guide channels are provided one after the other and the resulting ones protruding layers of thread in layers one above the other to form a fleece be filed.

Um die angestrebte Gleichmäßigkeit des Vlieses und seine Festigkeit in Längs- oder Querrichtung bestimmen zu können, ist aus der DE 39 07 215 A1 bekannt, die Spinnbalken mitsamt der Fadenabzugsvorrichtung drehbar auszubilden. Hierdurch sollen auch die Nachteile behoben werden, die beim sogenannten Vorhangverfahren auftreten und die in bestimmten Bereichen zu Überlagerungen einzelner Filamenten führen können. Beim Vorhangverfahren besitzt das Vlies eine bevorzugte Festigkeit in Längsrichtung, d.h. in Produktionsrichtung, während die Festigkeitswerte in Querrichtung geringer sind. Durch die Schrägstellung der Spinnbalken mitsamt der Ablege- und Streckvorrichtung soll dieses ausgeglichen werden.To achieve the desired uniformity of the fleece and its strength in To be able to determine the longitudinal or transverse direction is known from DE 39 07 215 A1 known, the spinning beam together with the thread take-off device rotatable train. This is also intended to eliminate the disadvantages associated with So-called curtain procedures occur and in certain areas can lead to overlays of individual filaments. At the Curtain method, the nonwoven has a preferred strength in Longitudinal direction, i.e. in the direction of production, while the strength values in Transverse direction are lower. Due to the inclination of the spinning beam together with the laying and stretching device, this should be compensated.

Bekannt ist außerdem durch die DE 35 42 660 C2 unterhalb des Abzugskanals eine Ablenkung des Luftstroms mit Hilfe einer parallel angeordneten Schwenkvorrichtung zu erreichen um dadurch eine Pendelbewegung der Fäden zu erzielen. Die Schwenkbewegung erfolgt in Laufrichtung des Ablagebandes in Produktionsrichtung; u.a. können hier auch sogenannte Coanderschalen Verwendung finden wie sie beispielsweise in der DE 24 21 401 C3 beschrieben sind. Die vorgesehenen Maßnahmen sind jedoch relativ träge, so dass nur langsame Schwingungen der Fadenschar möglich sind. It is also known from DE 35 42 660 C2 below the Duct a deflection of the air flow with the help of a parallel arranged swivel device to achieve a Achieve pendulum movement of the threads. The swivel movement takes place in Direction of the conveyor belt in the direction of production; et al can here so-called Coander shells are also used, such as those used for example are described in DE 24 21 401 C3. The proposed measures are however relatively sluggish, so that only slow vibrations of the Threads are possible.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt die Aufgabe zugrunde ein Verfahren mit dazugehöriger Vorrichtung zur Herstellung eines Spinnvlieses zu schaffen mit dem eine sehr hohe Gleichmäßigkeit der Vliesstruktur und Flächengewichtsverteilung erreicht werden kann. Darüber hinaus soll es möglich sein, die Längs- bzw. Querfestigkeit des Vlieses in vorgegebener Weise herzustellen. Die Festigkeit in Querrichtung soll beispielsweise gleich groß wie die Festigkeit in Längsrichtung sein.The invention has for its object a method with associated Device to produce a spunbond with the very one high uniformity of the fleece structure and basis weight distribution can be achieved. In addition, it should be possible to Manufacture cross-strength of the fleece in a predetermined manner. The Strength in the transverse direction should, for example, be the same as the strength in Longitudinal direction.

Die Lösung der gestellten Aufgabe erfolgt mit den Merkmalen der Ansprüche 1 und 9. Die Unteransprüche 2 bis 8 und 10 bis 19 sind vorteilhafte Weiterbildungen des Erfindungsgedankens.The problem is solved with the features of the claims 1 and 9. The subclaims 2 to 8 and 10 to 19 are advantageous Developments of the inventive concept.

Die Erfindung geht aus von einem Verfahren zur Herstellung eines Spinnvlieses durch Ausspinnen einer parallel nebeneinander angeordneten linearen Fadenschar in Form eines Vorhangs aus einer Vielzahl von Spinnkapilaren mit aerodynamischem Abziehen und Verstrecken der Fadenschar. Gemäß der Erfindung wird die aus dem Verstreckungskanal austretende oder einer Spule abgezogene Fadenschar von einem Luftstrom mit periodisch wechselnden Richtungen seitlich quer bewegt, wobei der Luftstrom in horizontaler Ebene gesehen schräg zur Fadenschar abwechselnd ausrichtet ist. Einzelne Luftstöße in wechselnden Richtungen bewirken, dass die Fadenschar quer zur Produktionsrichtung hin- und herbewegt wird, was zu der gewollten Vliesstruktur führt, beispielsweise eine hohe Gleichmäßigkeit in der Struktur.The invention is based on a method for producing a Spunbonded fabric by spinning a juxtaposed parallel linear thread sheet in the form of a curtain from a variety of Spin capillaries with aerodynamic pulling and stretching of the Yarn sheet. According to the invention, the stretching channel emerging or withdrawn from a bobbin of thread from an air stream moved laterally with periodically changing directions, the Air flow seen in a horizontal plane at an angle to the thread sheet is alternately aligned. Individual air blasts in changing directions cause the coulter to cross back and forth across the production direction is moved, which leads to the desired fleece structure, for example one high uniformity in structure.

Die Luftströme können abwechselnd von links und rechts ausgeführt werden. Als günstig erwies sich, wenn zwischen den einzelnen Luftströmen Luftpausen eingefügt sind, bei denen kein Luftstoß vorhanden ist und die ein zwischen den Luftstößen ein senkrechtes Ausrichten der Fadenschar gestatten.The air flows can be carried out alternately from left and right. It turned out to be beneficial if between the individual air flows Air breaks are inserted, where there is no air blast and the one a vertical alignment of the thread sheet between the air blasts allow.

Die generelle Ausblasrichtung der Luftströme ist senkrecht auf die Fadenschar gerichtet. Dabei wird ein Ausblaswinkel in horizontaler Ebene von 15° gewählt. Andere Ausblaswinkel sind je nach Bedarf selbstverständlich möglich. Möglich ist auch die Ausblasrichtung in vertikaler Ebene schräg nach unten auf die Fadenschar auszurichten. Der Ausblaswinkel in vertikaler Ebene kann 15° betragen.The general direction of air flow is perpendicular to the Thread cluster directed. This is a blow-out angle in the horizontal plane selected from 15 °. Other discharge angles are as needed of course possible. The vertical blow-out direction is also possible Align it diagonally downwards to the thread sheet. The Blow-out angle in the vertical plane can be 15 °.

Es ist ausreichend, wenn die Luftströme von der Vorderfront auf die Fadenschar gerichtet sind. Dieses schließt jedoch nicht aus, dass der Luftstrom auch von der Hinterfront oder von beiden Frontseiten auf die Fadenschar gerichtet werden kann. Dieses ist unter anderem abhängig von der Stärke der einzelnen Fäden und von den vorhandenen Strömungsverhältnissen für die Luftstöße. Gegebenenfalls kann der Ablagevorgang zusätzlich noch durch periodisch bewegte Strömungsleitflächen wie Schwenkklappen, Coanderschalen oder dergleichen unterstützt werden. Diese werden wie bereits im Stand der Technik bekannt so angeordnet, dass sie in Produktionsrichtung die Fadenschar zusätzlich hin und her schwenken.It is sufficient if the air flows from the front to the front Thread are directed. However, this does not exclude that the Airflow also from the rear or from both front to the Thread coulter can be directed. Among other things, this depends on the strength of the individual threads and the existing ones Flow conditions for the air blasts. If necessary, the Filing process additionally by periodically moving Flow control surfaces such as swivel flaps, Coander shells or the like are supported. As in the state of the Technology known to be arranged in the direction of production In addition, swing the thread coulter back and forth.

Die Vorrichtung zur Durchführung des Verfahrens besteht aus einem Spinnbalken mit einer Vielzahl von in einer Reihe liegenden Spinnkapilaren mit einem Kühlluftschacht und Verstreckungskanal und einem Ablageband. Gemäß der Erfindung ist unterhalb des Verstreckungskanals vor und / oder hinter der Fadenschar mindestens ein Blasschacht angeordnet mit in horizontaler Ebene gesehen schräg zur Fadenschar ausgerichteten Luftaustrittsdüsen. Die Luftaustrittsdüsen sind so angeordnet, dass sie wechselweise einen Luftstrom in unterschiedliche Richtungen blasen können und zwar auf die Fadenschar gesehen von links oder rechts. Dabei ist es günstig, wenn mindestens zwei parallel zueinander angeordnete Luftaustrittsdüsenreihen vorgesehen sind, wobei die Düsen einer Reihe entgegengesetzt zu den Düsen der anderen Reihe ausgerichtet sind. Die Luftzufuhr zu den Düsen erfolgt nacheinander, so dass einmal die Düsen nach links und einmal die Düsen nach rechts mit der Luft beaufschlagt sind. Hierfür wird die Luftzufuhr zu den Düsen jeweils einer Reihe durch einen Verschluss abgeschlossen. Möglich ist aber auch, die Düsen selbst mit Verschlüssen zu versehen und die Düsen jeweils einer Reihe abzuschließen und die andere Reihe zu öffnen.The device for performing the method consists of a Spinning beams with a large number of spinning capillaries lying in a row with a cooling air shaft and stretching duct and a storage belt. According to the invention is below the stretching channel before and / or at least one blow duct arranged behind the thread sheet with in seen horizontal plane obliquely to the thread sheet Air outlet nozzles. The air outlet nozzles are arranged so that they can alternately blow an air stream in different directions and seen from the left or right on the thread coulter. It is favorable if at least two arranged parallel to each other Air outlet nozzle rows are provided, the nozzles one row are oriented opposite to the nozzles of the other row. The Air is supplied to the nozzles one after the other, so that once the nozzles to the left and once the nozzles to the right are pressurized with air. For this purpose, the air supply to the nozzles is one by one Closure completed. But it is also possible to use the nozzles yourself To provide closures and to close the nozzles one row at a time and open the other row.

Für den Abschluss der Düsen kann eine drehbare Walze vorgesehen sein, die hohl ausgebildet und mit Längsschlitzen versehen ist.A rotatable roller can be provided to close off the nozzles, which is hollow and provided with longitudinal slots.

Die Düsen können durch wellblechartige Einlagen mit schräg zu ihrer Längsrichtung verlaufenden Wellungen gebildet sein, die in die Düsenwand eingelegt sind. Sie sind vorzugsweise auswechselbar, so dass der durch sie hindurchtretende Volumenstrom oder auch die Strömungsrichtung oder deren Winkel leicht verändert werden kann.The nozzles can be inserted at an angle to their through corrugated sheet-like inserts Longitudinal corrugations are formed, which in the nozzle wall are inserted. They are preferably interchangeable, so that through them passing volume flow or the flow direction or whose angle can be easily changed.

Die Düsenwand ist mit übereinander liegenden Längsschlitzen versehen, die mit den Längsschlitzen in der Walze korrespondieren. Eine besonders günstige Ausführungsform sieht die Anordnung eines Luftstauraumes im Blasschacht vor, der zwischen der Düsenwand und einer an der Walze liegenden Abdichtwand angeordnet ist. Dadurch wird eine sehr gleichmäßige Beaufschlagung der Düsen erreicht. The nozzle wall is provided with longitudinal slots lying one above the other correspond to the longitudinal slots in the roller. A special one favorable embodiment provides the arrangement of an air storage space in Blow chute in front, between the nozzle wall and one on the roller lying sealing wall is arranged. This will make it a very even one Actuation of the nozzles reached.

Der Luftstauraum ist durch ein Zwischenblech in zwei Kammern aufgeteilt, die den jeweilig oberen und unteren Längsschlitzen der Abdichtwand und den oberen und unteren Düsen in der Düsenwand zugeordnet sind. Die Walze ihrerseits ist dabei in einem mit Druckluft gefüllten Längskanal angeordnet, der mit einem Druckluftspeicher verbunden ist.The air storage space is divided into two chambers by an intermediate plate, which the respective upper and lower longitudinal slots of the sealing wall and are assigned to the upper and lower nozzles in the nozzle wall. The The roller in turn is in a longitudinal channel filled with compressed air arranged, which is connected to a compressed air reservoir.

Die rotierende Walze hat den Vorteil, dass auch bei größeren Produktionsbreiten ein gleichmäßiger Druck an den Düsen über die gesamte Produktionsbreite ansteht.The rotating roller has the advantage that even with larger ones Production widths a uniform pressure at the nozzles over the entire Production range is pending.

Die Ausblaswinkel der Düsen beider Düsenreihen sind vorzugsweise gleich, wodurch an der Fadenschar in beiden Richtungen eine gleiche Auslegung erreicht wird. Die Ausblaswinkel betragen 10 bis 60°, bevorzugt 45°.The outlet angles of the nozzles of both rows of nozzles are preferably the same, which means that the thread array has the same design in both directions is achieved. The blow-out angles are 10 to 60 °, preferably 45 °.

Zur weiteren Unterstützung des Vlieslegeverfahrens kann unterhalb des Blasschachtes eine verstellbare mechanische Luftführung zur Steuerung der Richtung der Luftströmung vorgesehen sein. Diese Luftführung kann aus schwenkbaren Flügelklappen oder auch aus Coanderschalen bestehen, durch welche die Fadenschar in Produktionsrichtung hin- und herbewegt werden kann.To further support the fleece laying process, below the Blasschachtes an adjustable mechanical air duct to control the Direction of air flow may be provided. This air flow can pivotable wing flaps or consist of Coander shells, through which the thread sheet moves back and forth in the production direction can be.

Zur Unterstützung der Luftführung sieht die bevorzugte Ausführungsform vor, dem Blasschacht gegenüber auf der anderen Front der Fadenschar ein in Blasschachtrichtung verstellbares Luftleitblech anzubringen. Durch dieses Luftleitblech wird die Richtung der seitlichen Luftströmung unterstützt und die seitliche Schwenkbewegung der Fadenschar kann stärker oder weniger stark eingestellt werden, in dem das Luftleitblech näher an den Blasschacht herangeführt wird oder davon entfernt wird. To support the air flow, the preferred embodiment provides opposite the blow shaft on the other front of the thread coulter Attach air baffle adjustable to the blow chute. Because of this Air baffle supports the direction of the side air flow and the lateral pivoting movement of the thread sheet can be stronger or less strong can be adjusted by moving the air baffle closer to the blow duct is introduced or removed from it.

Kurzbeschreibung der ZeichnungBrief description of the drawing

Anhand der Zeichnung wird die Erfindung nachstehend näher erläutert:The invention is explained in more detail below with the aid of the drawing:

Es zeigt:

  • Fig. 1 schematisch den Verfahrensablauf,
  • Fig. 2 schematisch den Blasschacht mit abgelenkter Fadenschar,
  • Fig. 3 Luftaustrittsdüsen des Blasschachtes in der Draufsicht,
  • Fig. 4 den Verstreckungskanal mit Blasschacht und Luftführungen in der teilweisen perspektivischen Ansicht und
  • Fig. 5 den Blasschacht mit einem Luftstauraum.
    • It shows:
  • 1 schematically shows the process flow,
  • 2 schematically shows the blow chute with the thread sheet deflected,
  • 3 air outlet nozzles of the blow shaft in plan view,
  • Fig. 4 shows the stretching channel with blow duct and air ducts in a partial perspective view
  • Fig. 5 the blow duct with an air storage space.

    • Ausführung der ErfindungImplementation of the invention

    In der Fig. 1 sind schematisch vier Einzelschritte A, B, C und D des Verfahrens dargestellt. Durch die senkrechten Striche 1 sind die Frontwandungen eines Blasschachtes 3 veranschaulicht. Mit 2 ist ein Luftleitblech bezeichnet. Die Punkte 4 sollen die einzelnen Fäden der Fadenschar wiedergeben. Durch den Pfeil 5 ist die Bewegungsrichtung des Ablagebandes angezeigt. Die gebogenen Pfeile 6 und 7 geben die Strömungsrichtung des Luftstroms wieder. In Fig. 1, four individual steps A, B, C and D of the Procedure illustrated. Through the vertical lines 1 are Front walls of a blow duct 3 illustrated. With 2 is one Air baffle designated. The points 4 are the individual threads of the Play thread coulter. By arrow 5 is the direction of movement Storage tape displayed. The curved arrows 6 and 7 indicate the Flow direction of the air flow again.

    Bei dem im Beispiel gewählten Verfahren wird die Fadenschar aus den Fäden 4 von ihrer Produktionsrichtung gesehen einmal nach rechts, siehe Schritt B, und einmal nach links, siehe Schritt D, bewegt. Zwischen diesen Bewegungen wird der Luftstrom gestoppt, so dass die Fadenschar sich senkrecht ausrichten kann, wie in den Schritten A und C gezeigt. Aus dem Blasschacht 3, der sich in Produktionsrichtung gesehen an der Rückfront der Fadenschar befindet, wird periodisch aus den dafür vorgesehenen Düsen einmal die Luft nach rechts, siehe Schritt B, und einmal die Luft nach links, siehe Schritt D, ausgeblasen. An der Vorderfront der Fadenschar befindet sich das Luftleitblech 2, welches mit einem Verstellmechanismus versehen ist und dessen Abstand vom Blasschacht 3 einstellbar ist.In the method chosen in the example, the thread group is made up of the Threads 4 seen from their direction of production once to the right, see Step B, and once to the left, see Step D, moved. Between these Movements, the air flow is stopped, so that the thread coulter itself can align vertically, as shown in steps A and C. From the Blasschacht 3, which is seen in the production direction on the back of the Threads are located periodically from the nozzles provided once the air to the right, see step B, and once the air to the left, see step D, blown out. Located on the front of the thread family the air baffle 2, which is provided with an adjustment mechanism and whose distance from the blow chute 3 is adjustable.

    Unten auf der Figur ist schematisch die Ablage eines einzelnen Fadens 4 eingezeichnet und es ist erkennbar, dass der Faden 4 bei seiner Ablage eine Bewegung vollführt, die etwa die Form einer Acht auf der Ablage ergibt.The deposition of a single thread 4 is shown schematically at the bottom of the figure and it can be seen that the thread 4 is a when it is deposited Performs movement that results in the shape of an eight on the shelf.

    In der Fig. 2 ist der Blasschacht 3 mit den übereinander in Reihen liegenden Luftaustrittsdüsen 10 und 11 gezeigt. Die aus dem Verstreckungskanal 12 austretende Fadenschar 8 wird durch den aus den Düsen 10 austretenden Luftstrom zunächst nach rechts abgelenkt, was durch die ausgezogenen Striche der Fadenschar 8 angezeigt ist. Nach Wegnahme des Luftstroms richtet sich die Fadenschar 8 wieder senkrecht aus und wird im weiteren Schritt durch den Luftstrom aus den Luftaustrittsdüsen 11 in die entgegengesetzte Richtung abgelenkt, was mit den punktierten Strichen der Fadenschar 8 angezeigt ist. Es sei bemerkt, dass diese Darstellung nur schematisch das Prinzip des Verfahrens wiedergibt.In Fig. 2 is the blow duct 3 with the one above the other in rows Air outlet nozzles 10 and 11 shown. The from the stretching channel 12 emerging thread sheet 8 is through the emerging from the nozzles 10 Airflow initially deflected to the right, which is due to the extended Dashes of the thread group 8 is shown. After removing the air flow the thread sheet 8 is again aligned vertically and will be in the further Step through the air flow from the air outlet nozzles 11 into the opposite direction, what with the dotted lines of the Thread cluster 8 is displayed. It should be noted that this representation only schematically represents the principle of the method.

    In der Fig. 3 sind die Düsen 10 und 11 des Blasschachtes 3 in der Draufsicht gezeigt. Die Pfeile 6 und 7 geben die Strömungsrichtung der Luftströmung an. Der Blasschacht 3 ist mit einem Zwischenblech ausgestattet, der die jeweiligen Räume für die Düsen 10 und 11 voneinander trennt. Dadurch ist es möglich, jeden Raum des Blasschachtes 3 getrennt mit Druckluft zu versorgen.In Fig. 3, the nozzles 10 and 11 of the blow shaft 3 are in plan view shown. Arrows 6 and 7 indicate the direction of flow of the air flow on. The blow duct 3 is equipped with an intermediate plate, which the separate spaces for the nozzles 10 and 11 from each other. This is it is possible to separate each room of the blow duct 3 with compressed air supply.

    In der Fig. 4 ist eine Zusammenstellung von Verstreckungskanal 12, Blasschacht 3 und Ablageband 13 wiedergegeben. Der Blasschacht 3 hat die Düsen 10 und 11 aus denen die Luftströme 6 und 7 austreten. Durch das Zwischenblech 14 ist der Blasschacht 3 in zwei Kammern 15 und 16 unterteilt, über die Druckluft den Düsen 10 und 11 zugeführt wird. Dem Blasschacht 3 gegenüberliegend ist das Luftleitblech 2 angebracht, das über geeignete Stellmechanismen in Richtung auf den Blasschacht 3 verschoben werden kann, was durch den Doppelpfeil 21 angezeigt ist. Unterhalb des Luftleitblechs 2 ist die Flügelklappe 22 vorgesehen, die um die Achse 23 verschwenkt werden kann, wie das mit dem Pfeil 24 angedeutet ist. Die aus dem Verstreckungskanal 12 austretende Fadenschar 8 wird durch die Luftströme aus den Luftaustrittsdüsen 10 und 11 seitlich quer hin und her bewegt. Durch die Flügelklappe 22 wird die Fadenschar 8 zusätzlich in Produktionsrichtung hin- und her geschwenkt. Das auf dem Ablageband 13 sich bildende Vlies hat eine außergewöhnlich hohe Gleichmäßigkeit und gleiche Flächengewichtsverteilung.4 is a compilation of stretching channel 12, Blow duct 3 and storage belt 13 reproduced. The Blasschacht 3 has that Nozzles 10 and 11 from which the air flows 6 and 7 emerge. By the Intermediate sheet 14 is the blow duct 3 in two chambers 15 and 16 divided, via which compressed air is fed to the nozzles 10 and 11. the Blasschacht 3 opposite the air baffle 2 is attached, the suitable adjustment mechanisms moved in the direction of the blow shaft 3 can be what is indicated by the double arrow 21. Below the Air baffle 2, the wing flap 22 is provided, which is about the axis 23 can be pivoted, as indicated by the arrow 24. From the stretching channel 12 emerging thread sheet 8 is by the Air flows from the air outlet nozzles 10 and 11 laterally back and forth emotional. Through the wing flap 22, the sheet 8 is additionally in Production direction swung back and forth. That on the storage belt 13 forming fleece has an exceptionally high uniformity and same basis weight distribution.

    In der Fig. 5 ist-die bevorzugte Ausführungsform gezeigt, bei der die hohle und mit Schlitzen 31 versehene Walze 30 im Blasschacht 3 in einem separaten Längskanal 40 angeordnet ist. Zwischen der Düsenwand 33 des Blasschachts 3 und einer Abdichtwand 34, an der die Walze 30 anliegt, ist ein Luftstauraum 32 vorhanden, der über das Zwischenblech 14 in zwei Kammern 15 und 16 unterteilt ist. In der Düsenwand 33 sind die Düsen 10 und 11 in Reihen übereinander angeordnet. Sie werden durch wellblechartige Kammern 15 und 16 unterteilt ist. In der Düsenwand 33 sind die Düsen 10 und 11 in Reihen übereinander angeordnet. Sie werden durch wellblechartige Einlagen 35 gebildet, mit schräg zu ihrer Längsrichtung (zur Maschinenbreite) verlaufenden Wellungen. Die Einlagen 35 sind auswechselbar. Die Abdichtwand 34 hat übereinander liegende Längsschlitze 36, die mit den Längsschlitzen 31 in der Walze 30 korrespondieren. Die Längsschlitze 31 und 36 sind so aufeinander abgestimmt, dass die Druckluft nur entweder der oberen Kammer 15 oder der unteren Kammer 16 zugeführt wird. Dabei können Zwischenpausen eingelegt werden, durch Überdeckung der Schlitze 36 durch die Walzenwandung, welche ein senkrechtes Ausrichten der Fäden 8 erlauben. Je nach dem Verhältnis der Längsschlitze 31 und der Walzenwandung und der Schlitze 36 in der Abdichtwand 34 kann die Luftströmung aus dem Längskanal 40 in die Kammern 15 und 16 variiert werden. Das Längskanal 40 ist über mehrere Anschlussstutzen 42 mit einem sich parallel zum Längskanal 40 erstreckender Druckluftspeicher 41 verbunden.5 shows the preferred embodiment, in which the hollow and roller 30 provided with slots 31 in the blow chute 3 in one separate longitudinal channel 40 is arranged. Between the nozzle wall 33 of the Blow duct 3 and a sealing wall 34 against which the roller 30 abuts an air storage space 32 is present, which in two over the intermediate plate 14 Chambers 15 and 16 is divided. The nozzles 10 are in the nozzle wall 33 and 11 arranged in rows one above the other. They are made of corrugated iron Chambers 15 and 16 is divided. The nozzles 10 are in the nozzle wall 33 and 11 arranged in rows one above the other. They are made of corrugated iron Deposits 35 formed, at an angle to their longitudinal direction (for Machine width) running corrugations. The deposits are 35 replaceable. The sealing wall 34 has one above the other Longitudinal slots 36, which with the longitudinal slots 31 in the roller 30th correspond. The longitudinal slots 31 and 36 are so on top of each other matched that the compressed air is only either the upper chamber 15 or the lower chamber 16 is supplied. There can be breaks be inserted by covering the slots 36 through the Roll wall, which allow the threads 8 to be aligned vertically. Depending on the ratio of the longitudinal slots 31 and the roller wall and the slots 36 in the sealing wall 34, the air flow from the Longitudinal channel 40 in the chambers 15 and 16 can be varied. The longitudinal channel 40 is connected via a plurality of connecting pieces 42 with one parallel to the Longitudinal channel 40 extending compressed air reservoir 41 connected.

    Claims (28)

    Verfahren zur Herstellung eines Spinnvlieses durch Ausspinnen einer parallel nebeneinander angeordneten linearen Fadenschar in Form eines Vorhangs aus einer Vielzahl von Spinnkapilaren mit aerodynamischem Abziehen und Verstrecken der Fadenschar, dadurch gekennzeichnet, dass die aus dem Verstreckungskanal (12) austretende oder einer Spule abgezogene Fadenschar (8) von einem Luftstrom mit periodisch wechselnden Richtungen seitlich quer bewegt wird, wobei der Luftstrom in horizontaler Ebene gesehen schräg zur Fadenschar (8) abwechselnd ausgerichtet ist.Method for producing a spunbonded nonwoven by spinning out a linear thread sheet arranged in parallel next to one another in the form of a curtain from a plurality of spinning capillaries with aerodynamic pulling and stretching of the thread sheet, characterized in that the thread sheet (8) emerging from the stretching channel (12) or drawn off a bobbin is moved laterally laterally by an air flow with periodically changing directions, the air flow, viewed in the horizontal plane, being alternately oriented obliquely to the thread sheet (8). Verfahren zur Herstellung eines Spinnvlieses nach Anspruch 1, dadurch gekennzeichnet, dass zwischen den Luftströmen Luftpausen bestehen.A process for producing a spunbonded web according to claim 1, characterized in that there are air gaps between the air streams. Verfahren zur Herstellung eines Spinnvlieses nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Ausblasrichtung senkrecht auf die Fadenschar (8) gerichtet ist.A method for producing a spunbonded fabric according to claim 1 or 2, characterized in that the blow-out direction is directed perpendicularly to the thread sheet (8). Verfahren zur Herstellung eines Spinnvlieses nach Anspruch 3, dadurch gekennzeichnet, dass der Ausblaswinkel in horizontaler Ebene 15° beträgt.A process for producing a spunbonded fabric according to claim 3, characterized in that the blow-out angle in the horizontal plane is 15 °. Verfahren zur Herstellung eines Spinnvlieses nach Anspruch 4, dadurch gekennzeichnet, dass die Ausblasrichtung in vertikaler Ebene schräg nach unten auf die Fadenschar (8) gerichtet ist. A method for producing a spunbonded nonwoven according to claim 4, characterized in that the blow-out direction in the vertical plane is directed obliquely downwards onto the thread sheet (8). Verfahren zur Herstellung eines Spinnvlieses nach Anspruch 5, dadurch gekennzeichnet, dass der Ausblaswinkel in vertikaler Ebene 15° beträgt.A process for producing a spunbonded web according to claim 5, characterized in that the blow-out angle in the vertical plane is 15 °. Verfahren zur Herstellung eines Spinnvlieses nach Anspruch 1 bis 6, dadurch gekennzeichnet, dass der Luftstrom von der Vorderfront oder von der Hinterfront der Fadenschar (8) auf dieselbe gerichtet ist.A process for producing a spunbonded nonwoven according to claims 1 to 6, characterized in that the air flow from the front face or from the rear face of the thread sheet (8) is directed towards the same. Verfahren zur Herstellung eines Spinnvlieses nach Anspruch 1 bis 7, dadurch gekennzeichnet, dass die Fadenschar (8) nach der Luftstrombewegung zusätzlich durch periodisch bewegte Strömungsleitflächen, wie Schwenkklappen, Coanderschalen oder dergleichen abgelenkt wird.A process for producing a spunbonded nonwoven according to claims 1 to 7, characterized in that the thread sheet (8) is additionally deflected after the air flow movement by periodically moved flow guide surfaces, such as swivel flaps, Coander shells or the like. Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 8 mit einem Spinnbalken mit einer Vielzahl von in Reihe liegenden Spinnkapilaren, einem Kühlluftschacht und Verstreckungskanal und einen Ablageband, gekennzeichnet durch mindestens einen unterhalb des Verstreckungskanals (12) vor und / oder hinter der Fadenschar (8) angeordneten Blasschacht (3) mit in horizontaler Ebene gesehen schräg zur Fadenschar (8) ausgerichteten Luftaustrittsdüsen (10, 11).Device for carrying out the method according to one of claims 1 to 8 with a spinning beam with a plurality of spinning capillaries lying in series, a cooling air shaft and stretching channel and a deposit belt, characterized by at least one below the stretching channel (12) in front of and / or behind the thread sheet ( 8) arranged blow shaft (3) with air outlet nozzles (10, 11) oriented obliquely to the thread sheet (8) as seen in the horizontal plane. Vorrichtung nach Anspruch 9 dadurch gekennzeichnet, dass mindestens zwei parallel zueinander angeordnete Luftaustrittsdüsenreihen (10, 11) vorgesehen sind, wobei die Düsen (10) einer Reihe entgegengesetzt zu den Düsen (11) der anderen Reihe ausgerichtet sind. Apparatus according to claim 9, characterized in that at least two rows of air outlet nozzles (10, 11) arranged parallel to one another are provided, the nozzles (10) of one row being oriented opposite to the nozzles (11) of the other row. Vorrichtung nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass die Luftzufuhr zu den Düsen (10, 11) jeweils einer Reihe durch einen Verschluss abschließbar ist.Apparatus according to claim 9 or 10, characterized in that the air supply to the nozzles (10, 11) in each case one row can be closed by a closure. Vorrichtung nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass die Düsen (10, 11) jeweils einer Reihe durch einen Verschluss abschließbar sind.Apparatus according to claim 9 or 10, characterized in that the nozzles (10, 11) can each be locked in a row by a closure. Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, dass die Düsen (10, 11) durch eine drehbare Walze (3) abschließbar sind.Device according to claim 12, characterized in that the nozzles (10, 11) can be locked by a rotatable roller (3). Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, dass die Walze (30) hohl ausgebildet und mit Längsschlitzen (31) versehen ist.Device according to claim 13, characterized in that the roller (30) is hollow and is provided with longitudinal slots (31). Vorrichtung nach Anspruch 13 oder 14, dadurch gekennzeichnet, dass die Düsen (10, 11) durch wellblechartige Einlagen (35) mit schräg zu ihrer Längsrichtung verlaufenden Wellungen gebildet sind, die in der Düsenwand (33) eingelegt sind.Device according to claim 13 or 14, characterized in that the nozzles (10, 11) are formed by corrugated sheet-like inserts (35) with corrugations which run obliquely to their longitudinal direction and which are inserted in the nozzle wall (33). Vorrichtung nach Anspruch 15, dadurch gekennzeichnet, dass die Einlagen (35) auswechselbar sind.Apparatus according to claim 15, characterized in that the inserts (35) are interchangeable. Vorrichtung nach Anspruch 16, dadurch gekennzeichnet, dass die Abdichtwand (34) mit übereinander liegenden Längsschlitzen (36) versehen ist, die mit der Längsschlitzen (31) in der Walze (30) korrespondieren. Apparatus according to claim 16, characterized in that the sealing wall (34) is provided with overlying longitudinal slots (36) which correspond to the longitudinal slots (31) in the roller (30). Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, dass der Blasschacht (3) einen Luftstauraum (32) hat, der zwischen der Düsenwand (33) und einer Abdichtwand (34) zur Walze (30) liegt.Device according to claim 13, characterized in that the blow duct (3) has an air storage space (32) which lies between the nozzle wall (33) and a sealing wall (34) to the roller (30). Vorrichtung nach Anspruch 18, dadurch gekennzeichnet, dass der Luftstauraum (32) durch ein Zwischenblech (14) in zwei Kammern (15, 16) aufgeteilt ist, die den jeweilig oberen und unteren Längsschlitzen (36) und Düsen (35) zugeordnet sind.Device according to claim 18, characterized in that the air storage space (32) is divided by an intermediate plate (14) into two chambers (15, 16) which are assigned to the respective upper and lower longitudinal slots (36) and nozzles (35). Vorrichtung nach einem der Ansprüche 13 bis 19, dadurch gekennzeichnet, dass die Walze (30) in einem mit Druckluft gefüllten Längskanal (4) angeordnet ist.Device according to one of claims 13 to 19, characterized in that the roller (30) is arranged in a longitudinal channel (4) filled with compressed air. Vorrichtung nach Anspruch 20, dadurch gekennzeichnet, dass der Längskanal (40) mit einem Druckluftspeicher (41) verbunden ist.Apparatus according to claim 20, characterized in that the longitudinal channel (40) is connected to a compressed air reservoir (41). Vorrichtung nach einem der Ansprüche 9 bis 21, dadurch gekennzeichnet, dass die Ausblaswinkel der Düsen (10, 11) jeweils einer Düsenreihe gleich sind.Device according to one of claims 9 to 21, characterized in that the blow-out angles of the nozzles (10, 11) are each the same as a row of nozzles. Vorrichtung nach Anspruch 22, dadurch gekennzeichnet, dass die Ausblaswinkel 10° bis 60°, vorzugsweise 45° betragen.Apparatus according to claim 22, characterized in that the blow-out angle is 10 ° to 60 °, preferably 45 °. Vorrichtung nach einem der Ansprüche 9 bis 23, dadurch gekennzeichnet, dass dem Blasschacht (1) gegenüber auf der anderen Frontseite der Fadenschar (8) ein in Blasschachtrichtung verstellbares Luftleitblech (2) angebracht ist. Device according to one of claims 9 to 23, characterized in that an air guide plate (2) which is adjustable in the direction of the blow chute is attached opposite the blow chute (1) on the other front side of the thread sheet (8). Vorrichtung nach einem der Ansprüche 9 bis 24, dadurch gekennzeichnet, dass unterhalb des Blasschachtes (3) eine verstellbare mechanische Luftführung zur Steuerung der Richtung der Luftströmung vorgesehen ist.Device according to one of claims 9 to 24, characterized in that an adjustable mechanical air duct for controlling the direction of the air flow is provided below the blow shaft (3). Vorrichtung nach einem der Ansprüche 9 bis 25, dadurch gekennzeichnet, dass die Luftführung aus einer schwenkbaren Flügelklappe (22) besteht.Device according to one of claims 9 to 25, characterized in that the air duct consists of a pivotable wing flap (22). Vorrichtung nach einem der Ansprüche 9 bis 26, dadurch gekennzeichnet, dass die Luftführung aus Coanderschalen besteht.Device according to one of claims 9 to 26, characterized in that the air duct consists of Coander shells. Spinnvlies hergestellt gemäß dem Verfahren nach einem der Ansprüche 1 bis 8.Spunbond manufactured according to the method of one of the Claims 1 to 8.
    EP01113039A 2000-07-25 2001-05-29 Method and apparatus for making a spunbonded nonwoven Expired - Lifetime EP1178142B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE10036047 2000-07-25
    DE10036047 2000-07-25

    Publications (2)

    Publication Number Publication Date
    EP1178142A1 true EP1178142A1 (en) 2002-02-06
    EP1178142B1 EP1178142B1 (en) 2003-07-16

    Family

    ID=7650057

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP01113039A Expired - Lifetime EP1178142B1 (en) 2000-07-25 2001-05-29 Method and apparatus for making a spunbonded nonwoven

    Country Status (10)

    Country Link
    US (2) US6887331B2 (en)
    EP (1) EP1178142B1 (en)
    JP (1) JP3581842B2 (en)
    AT (1) ATE245217T1 (en)
    CA (1) CA2354050C (en)
    DE (2) DE50100381D1 (en)
    ES (1) ES2201002T3 (en)
    PL (1) PL202460B1 (en)
    PT (1) PT102643A (en)
    TW (1) TW587115B (en)

    Families Citing this family (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1277867A1 (en) * 2001-07-16 2003-01-22 Carl Freudenberg KG Method and apparatus for the manufacture of spunbond webs
    DE10333259A1 (en) * 2003-05-14 2005-03-03 Yao-Chang Lin Production of non-woven fabric, by drawing fiber strands from spinneret, forming fiber strands on conveyor screen belt, and using swinging air jet device to swing fiber strands to-and-fro downstream of drawing air jet device
    DE102008053919B4 (en) * 2008-09-10 2012-10-04 Carl Freudenberg Kg Process and plant for the production of nonwovens and nonwovens
    EP2584076B1 (en) * 2011-10-22 2017-01-11 Oerlikon Textile GmbH & Co. KG Device and method for guiding and depositing synthetic filaments onto a non-woven fabric

    Citations (11)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US3293718A (en) * 1963-07-01 1966-12-27 Du Pont Apparatus for forming non-woven web structures
    GB1219921A (en) * 1967-01-27 1971-01-20 Monsanto Co Method and apparatus for pneumatically or hydraulically depositing a non-woven web structure
    US3720361A (en) * 1970-03-26 1973-03-13 Stamicarbon Process and device for the preparation of a plastic fiber fleece
    US4064605A (en) * 1975-08-28 1977-12-27 Toyobo Co., Ltd. Method for producing non-woven webs
    US4285452A (en) * 1979-02-26 1981-08-25 Crown Zellerbach Corporation System and method for dispersing filaments
    US4753698A (en) * 1985-12-03 1988-06-28 Firma Carl Freudenberg Method for the production of spun bonded nonwoven fabrics having a uniform structure
    DE3807483A1 (en) * 1987-05-05 1988-11-17 Karl Marx Stadt Tech Textil Device for uniform laying down of the filaments in the manufacture of a bonded fabric using the direct method
    US5045271A (en) * 1986-01-17 1991-09-03 J. H. Benecke Gmbh Process for the production of irregular non-woven material sheets
    JPH0633360A (en) * 1992-07-10 1994-02-08 Yoshikazu Yamaguchi Production of nonwoven fabric
    US5711970A (en) * 1995-08-02 1998-01-27 Kimberly-Clark Worldwide, Inc. Apparatus for the production of fibers and materials having enhanced characteristics
    EP1081262A1 (en) * 1999-08-30 2001-03-07 Nippon Petrochemicals Company, Limited Method of and apparatus for manufacturing longitudinally aligned nonwoven fabric

    Family Cites Families (13)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US3030659A (en) 1958-12-29 1962-04-24 Owens Corning Fiberglass Corp Apparatus for producing fibers
    NL296015A (en) * 1962-05-16
    JPS451077Y1 (en) 1966-02-09 1970-01-19
    US3477103A (en) * 1967-07-07 1969-11-11 Du Pont Preparation of nonwoven web structure
    AT292178B (en) 1967-07-28 1971-08-10 Bunzl & Biach Ag Method and apparatus for the production of fibrous sheet-like structures
    DE2421401C3 (en) 1974-05-03 1982-12-09 J.H. Benecke Gmbh, 3000 Hannover Device for distributing a thread bundle in the manufacture of spunbonded nonwovens
    DD128204B1 (en) * 1976-10-11 1979-05-30 Malcomess Hans Juergen METHOD AND DEVICE FOR PREPARING ELEMENTARY FADER LIQUID
    FI70739C (en) * 1977-04-28 1986-10-06 Valmet Oy BANBILDNINGSENHET VID FRAMSTAELLNING AV FLERSKIKTSKARTONG
    DE3907215C2 (en) * 1988-05-27 1993-11-25 Corovin Gmbh Device for producing a nonwoven from continuous filaments and multilayered nonwoven produced therewith
    US5075068A (en) * 1990-10-11 1991-12-24 Exxon Chemical Patents Inc. Method and apparatus for treating meltblown filaments
    JPH04223133A (en) 1990-12-26 1992-08-13 Mazda Motor Corp Apparatus for molding resin
    US5762857A (en) * 1997-01-31 1998-06-09 Weng; Jian Method for producing nonwoven web using pulsed electrostatic charge
    EP1081252A1 (en) 1999-09-02 2001-03-07 Enthone-OMI (Benelux) B.V. Selective plating method

    Patent Citations (11)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US3293718A (en) * 1963-07-01 1966-12-27 Du Pont Apparatus for forming non-woven web structures
    GB1219921A (en) * 1967-01-27 1971-01-20 Monsanto Co Method and apparatus for pneumatically or hydraulically depositing a non-woven web structure
    US3720361A (en) * 1970-03-26 1973-03-13 Stamicarbon Process and device for the preparation of a plastic fiber fleece
    US4064605A (en) * 1975-08-28 1977-12-27 Toyobo Co., Ltd. Method for producing non-woven webs
    US4285452A (en) * 1979-02-26 1981-08-25 Crown Zellerbach Corporation System and method for dispersing filaments
    US4753698A (en) * 1985-12-03 1988-06-28 Firma Carl Freudenberg Method for the production of spun bonded nonwoven fabrics having a uniform structure
    US5045271A (en) * 1986-01-17 1991-09-03 J. H. Benecke Gmbh Process for the production of irregular non-woven material sheets
    DE3807483A1 (en) * 1987-05-05 1988-11-17 Karl Marx Stadt Tech Textil Device for uniform laying down of the filaments in the manufacture of a bonded fabric using the direct method
    JPH0633360A (en) * 1992-07-10 1994-02-08 Yoshikazu Yamaguchi Production of nonwoven fabric
    US5711970A (en) * 1995-08-02 1998-01-27 Kimberly-Clark Worldwide, Inc. Apparatus for the production of fibers and materials having enhanced characteristics
    EP1081262A1 (en) * 1999-08-30 2001-03-07 Nippon Petrochemicals Company, Limited Method of and apparatus for manufacturing longitudinally aligned nonwoven fabric

    Non-Patent Citations (1)

    * Cited by examiner, † Cited by third party
    Title
    PATENT ABSTRACTS OF JAPAN vol. 018, no. 257 (C - 1200) 17 May 1994 (1994-05-17) *

    Also Published As

    Publication number Publication date
    PL348710A1 (en) 2002-01-28
    ES2201002T3 (en) 2004-03-16
    EP1178142B1 (en) 2003-07-16
    PT102643A (en) 2002-01-30
    JP3581842B2 (en) 2004-10-27
    US7191813B2 (en) 2007-03-20
    CA2354050A1 (en) 2002-01-25
    US20020043739A1 (en) 2002-04-18
    ATE245217T1 (en) 2003-08-15
    DE10133790A1 (en) 2002-03-28
    TW587115B (en) 2004-05-11
    CA2354050C (en) 2006-10-31
    US20050098266A1 (en) 2005-05-12
    JP2002088632A (en) 2002-03-27
    DE10133790B4 (en) 2008-11-20
    US6887331B2 (en) 2005-05-03
    PL202460B1 (en) 2009-06-30
    DE50100381D1 (en) 2003-08-21

    Similar Documents

    Publication Publication Date Title
    DE3701531C2 (en)
    DE60309653T2 (en) DEVICE FOR PRODUCING THERMOPLASTIC NONWOVENS AND COMPOUNDS
    DE1950669C3 (en) Process for the manufacture of nonwovens
    EP2584076B1 (en) Device and method for guiding and depositing synthetic filaments onto a non-woven fabric
    DE1635585B2 (en) Process for the production of uniformly sized non-woven fabric webs from endless threads
    DE3728002A1 (en) METHOD AND DEVICE FOR PRODUCING SPINNING FLEECE
    EP0598463B1 (en) Process and apparatus for conveying and for laying continuous filaments bundle with air force
    DE4014414A1 (en) Drawn filament layer - has a cooling chamber and process air feed openings at entry to drawing jet for defined drawing action
    DE4312309A1 (en) Process and devices for producing a sheet-like spun-bonded web product
    DE2532900A1 (en) METHOD FOR PRODUCING SPINNED FIBERS
    EP1178142B1 (en) Method and apparatus for making a spunbonded nonwoven
    DE1760713A1 (en) Method and device for producing a random thread fleece from synthetic threads
    DE102008051836B4 (en) Process for the production of spunbonded nonwovens
    EP1277867A1 (en) Method and apparatus for the manufacture of spunbond webs
    DE19924508C1 (en) Direct melt spinning of nonwovens using aerodynamic drawing includes pressurized air chamber round spinneret that is accessible to operators
    DE1950435A1 (en) Composite nonwoven fabric production
    DE2220575B2 (en) Device for producing a thread fleece
    DE1785712B2 (en) Mature nonwoven fabric and its uses
    AT292178B (en) Method and apparatus for the production of fibrous sheet-like structures
    AT403483B (en) METHOD FOR PRODUCING SPINNING FLEECE
    DE3711761C2 (en) Device for interlacing multifilament yarns
    DE3727262A1 (en) Apparatus for the swirling of multi-filament yarns
    DE102008053919B4 (en) Process and plant for the production of nonwovens and nonwovens
    DE2137342A1 (en) Endless synthetic filament tow spinning appts
    DE1596574B1 (en) Method and device for distributing endless threads of at least one strand on a collecting area to form a mat

    Legal Events

    Date Code Title Description
    PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

    Free format text: ORIGINAL CODE: 0009012

    AK Designated contracting states

    Kind code of ref document: A1

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

    AX Request for extension of the european patent

    Free format text: AL;LT;LV;MK;RO;SI

    17P Request for examination filed

    Effective date: 20020125

    17Q First examination report despatched

    Effective date: 20020422

    AKX Designation fees paid

    Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

    GRAH Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOS IGRA

    GRAH Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOS IGRA

    GRAA (expected) grant

    Free format text: ORIGINAL CODE: 0009210

    AK Designated contracting states

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: FI

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20030716

    Ref country code: CY

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20030716

    Ref country code: IE

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20030716

    Ref country code: NL

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20030716

    Ref country code: TR

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20030716

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: FG4D

    Free format text: NOT ENGLISH

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: EP

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: NV

    Representative=s name: PATENTANWAELTE FELDMANN & PARTNER AG

    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: FG4D

    Free format text: GERMAN

    REF Corresponds to:

    Ref document number: 50100381

    Country of ref document: DE

    Date of ref document: 20030821

    Kind code of ref document: P

    GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: DK

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20031016

    Ref country code: GR

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20031016

    Ref country code: SE

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20031016

    NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: PT

    Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

    Effective date: 20031216

    REG Reference to a national code

    Ref country code: IE

    Ref legal event code: FD4D

    REG Reference to a national code

    Ref country code: ES

    Ref legal event code: FG2A

    Ref document number: 2201002

    Country of ref document: ES

    Kind code of ref document: T3

    ET Fr: translation filed
    PLBE No opposition filed within time limit

    Free format text: ORIGINAL CODE: 0009261

    STAA Information on the status of an ep patent application or granted ep patent

    Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: LU

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040529

    Ref country code: AT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040529

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: MC

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040531

    Ref country code: BE

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20040531

    26N No opposition filed

    Effective date: 20040419

    BERE Be: lapsed

    Owner name: CARL *FREUDENBERG K.G.

    Effective date: 20040531

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: CH

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20050531

    Ref country code: LI

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20050531

    REG Reference to a national code

    Ref country code: CH

    Ref legal event code: PL

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: PLFP

    Year of fee payment: 15

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: ES

    Payment date: 20150511

    Year of fee payment: 15

    Ref country code: GB

    Payment date: 20150518

    Year of fee payment: 15

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: IT

    Payment date: 20150527

    Year of fee payment: 15

    Ref country code: FR

    Payment date: 20150518

    Year of fee payment: 15

    GBPC Gb: european patent ceased through non-payment of renewal fee

    Effective date: 20160529

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: IT

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20160529

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: ST

    Effective date: 20170131

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: FR

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20160531

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: GB

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20160529

    PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

    Ref country code: ES

    Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

    Effective date: 20160530

    REG Reference to a national code

    Ref country code: ES

    Ref legal event code: FD2A

    Effective date: 20180627

    PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

    Ref country code: DE

    Payment date: 20200526

    Year of fee payment: 20

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R071

    Ref document number: 50100381

    Country of ref document: DE