EP1340843A1 - Apparatus for the continuous production of a spunbonded web - Google Patents

Apparatus for the continuous production of a spunbonded web Download PDF

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Publication number
EP1340843A1
EP1340843A1 EP02004615A EP02004615A EP1340843A1 EP 1340843 A1 EP1340843 A1 EP 1340843A1 EP 02004615 A EP02004615 A EP 02004615A EP 02004615 A EP02004615 A EP 02004615A EP 1340843 A1 EP1340843 A1 EP 1340843A1
Authority
EP
European Patent Office
Prior art keywords
suction
diffuser
area
air
filaments
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
EP02004615A
Other languages
German (de)
French (fr)
Other versions
EP1340843B1 (en
Inventor
Hans-Georg Geus
Detlef Frey
Peter Dr. Schlag
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.)
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Original Assignee
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
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 Reifenhaeuser GmbH and Co KG Maschinenenfabrik filed Critical Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Priority to DK02004615T priority Critical patent/DK1340843T3/en
Priority to TR2003/02088T priority patent/TR200302088T3/en
Priority to EP02004615A priority patent/EP1340843B1/en
Priority to ES02004615T priority patent/ES2207428T3/en
Priority to DE50211394T priority patent/DE50211394D1/en
Priority to AT02004615T priority patent/ATE381630T1/en
Priority to SI200230653T priority patent/SI1340843T1/en
Priority to CNB021217890A priority patent/CN100366810C/en
Priority to ARP030100611A priority patent/AR038608A1/en
Priority to IL154631A priority patent/IL154631A/en
Priority to MXPA03001723A priority patent/MXPA03001723A/en
Priority to BRPI0300508-9A priority patent/BR0300508B1/en
Priority to MYPI20030688A priority patent/MY135631A/en
Priority to CA002420520A priority patent/CA2420520C/en
Priority to CZ2003-581A priority patent/CZ305424B6/en
Priority to KR1020030012229A priority patent/KR100920436B1/en
Priority to US10/375,892 priority patent/US6918750B2/en
Priority to RU2003105789/12A priority patent/RU2260083C2/en
Priority to JP2003050834A priority patent/JP3704522B2/en
Priority to PL358929A priority patent/PL206768B1/en
Publication of EP1340843A1 publication Critical patent/EP1340843A1/en
Application granted granted Critical
Publication of EP1340843B1 publication Critical patent/EP1340843B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D04H3/16—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
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • 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)

Definitions

  • the invention relates to a plant for continuous Production of a spun-bonded nonwoven web from aerodynamically stretched Filaments made of thermoplastic with a spinnerette, a cooling chamber, into the process air Cooling of the filaments can be introduced from an air supply cabin is, a stretching unit with a pull channel and with a depositing device for depositing the filaments Spunbond web.
  • process air denotes cooling air for cooling the filaments.
  • a known system of the type mentioned (DE 196 20 379 C2), from which the invention is based, has basically for the production of a spunbonded nonwoven web aerodynamically stretched film types proven.
  • the stretching unit is aerodynamically decoupled of a laying system that has a diffuser.
  • This finds a clean functional separation between the Stretching unit and the laying unit instead.
  • This is the Underlay channel in terms of the gap thickness as the laying unit aerodynamically decoupling from the stretching unit Air purge trained.
  • the term sealing air duct states that process air is always out when the system is in operation exits the undergarment channel and enters the diffuser, but with a mass flow and a kinetic energy, which prevents pressure changes in the installation unit on the aerodynamic conditions in the blowing system or interfere in the cooling chamber and vice versa. Therefore, the cooling process can be carried out with this system or blowing process in the cooling chamber can be optimized without that this optimization of the laying process and thus the Spunbond formation impaired. Conversely, can the laying system is optimized with regard to spunbond formation without the blowing system or cooling system Experiences disturbances.
  • the one located under the spinnerette The cooling chamber of this system also has a blowing fan with which the process air for cooling the filaments on the filaments are blown.
  • the filament speed and the filament fineness should be increased (e.g. reduction of the titer to values well below 1), however, one reaches the limits of this known system.
  • the blowing process performed on this system is for higher throughputs are not suitable because of problems with them the filament formation comes. A resulting own movement the filaments leads to the filaments being on top of each other to move and therefore only filed as a bundle of filaments can be.
  • the known system Air speed to increase filament speed is increased, this leads to an intensification of the Cooling the filaments. This intensive cooling is necessary early freezing of the filaments and thus one Limitation for the filament speed or for the Filament fineness.
  • the invention is the technical problem based on specifying an installation of the type mentioned at the outset, with the higher filament speeds and increased Filament fineness can be achieved and at which the problems described above can be effectively avoided can.
  • the invention teaches to solve this technical problem a system of the type described above, which thereby is characterized in that the arranged next to the cooling chamber Air supply cabin in at least two cabin sections is divided, from which process air is different Temperature can be supplied. - It is within the scope of the invention that the air supply cabin is made up of at least two vertically there are superimposed cabin sections. Only two cabin sections are expedient arranged vertically one above the other.
  • Embodiment of the invention is from a first Cabin section process air with a temperature between 15 ° C and 75 ° C, preferably between 18 ° C and 70 ° C feedable and is from a second cabin section Process air with a temperature between 15 ° C and 38 ° C, preferably between 18 ° C and 35 ° C can be supplied.
  • the first and second cabin sections arranged vertically one above the other and the first cabin section forms the upper cabin section and the second cabin section forms the lower cabin section. It is within the scope of the invention that the from upper cabin section air supplied a higher temperature than that fed from the lower cabin section Has air.
  • the air supplied to the upper cabin section is lower Temperature than that from the lower cabin section have supplied air.
  • everyone Cabin section at least one blower for the supply of Process air connected.
  • the temperature of each cabin section can be regulated.
  • the volume flows the individual Cabin sections of the supplied air flows regulated can be.
  • the Air supply cabin is commonly referred to as a blowing cabin.
  • a blowing cabin In these systems there is a targeted blowing on the Filaments or the filament bundle with air instead.
  • the filament bundle sucks in the process air that it needs.
  • the Cooling chamber corresponds to a passive system in which a The filaments are not blown, but only a suction of process air from the cabin sections he follows.
  • the individual filaments are formed in each case concentrically on and due to an air boundary layer of these boundary layers, the filaments or the filament bundle sucks in the process air.
  • the boundary layers ensure a sufficient distance from the Filaments to each other.
  • the spinnerette of the system has nozzle holes for the The filaments emerge.
  • the very special in the context of the invention The mutual spacing of the nozzle bores is of importance the spinnerette in the middle of the spinnerette larger than in the outside areas.
  • the distance between the nozzle bores enlarged in the nozzle plate of the spinnerette so from the outside towards the middle.
  • the air supply cabin spaced from the nozzle plate of the spinnerette and that the air supply cabin is conveniently some Centimeters below the nozzle plate is arranged.
  • a monomer suction device arranged between the nozzle plate and the air supply cabin.
  • the monomer suction device sucks air directly from the filament formation space below the nozzle plate, whereby it is achieved that the gases emerging next to the polymer filaments such as Monomers, oligomers, decomposition products and the like can be removed from the system.
  • the monomer suction device can with the monomer suction device the air flow below the nozzle plate, which is otherwise due to the indifferent conditions could not be stationary.
  • the Monomer suction device expediently has one Suction chamber to which preferably at least one Suction fan is connected.
  • the Suction chamber towards the filament formation space in your lower area a first suction slot.
  • the suction chamber furthermore in its upper area a second suction slit on. With the suction through this second Suction slot is effectively achieved that itself disturbing turbulence in the area between the nozzle plate and cannot form the suction chamber.
  • an intermediate channel is which intermediate channel from the exit of the cooling chamber to enter the drawing channel of the drawing unit in the Vertical section converges in a wedge shape.
  • the intermediate channel runs to the entrance of the lower channel in the Vertical section on the entrance width of the lower channel wedge-shaped together.
  • the geometry of the intermediate channel is changeable so that the air speed increases can be. In this way, undesirable, at high Relaxation of the filaments occurring at temperatures avoided become.
  • the invention is based on the knowledge that the above mentioned technical problem can be solved effectively and especially the filament speed and filament fineness can be increased surprisingly if the Measures according to the invention can be realized. in the The result is nonwovens with optically high quality.
  • the invention is further based on the finding that for this solution to the technical problem an aerodynamic Decoupling the cooling of the filaments from the Stretching of the filaments is necessary and that this aerodynamic decoupling by realizing the described inventive features can be achieved can.
  • Essential to the invention is the inventive one Formation of the cooling chamber or the air supply cabin as well as the possibility of regulating various Temperatures and volume flows of the supplied air. to aerodynamic decoupling also carries the others Measures according to the invention explained above.
  • the filament cooling is achieved reliable from filament stretching is decoupled or aerodynamically decoupled.
  • Aerodynamic Decoupling here means that there are pressure changes in the drawing unit to the conditions in the Cooling chamber impact, however, through the adjustment options this influence in the divided air supply can be largely compensated for on the thread.
  • the stretching unit a laying unit with at least one diffuser followed.
  • Installation unit consisting of a first diffuser and one attached to it subsequent second diffuser.
  • the opening angle a is preferably in one lower divergent area of the first diffuser infinitely adjustable. In addition there are the divergent side walls of the first diffuser.
  • This adjustability the diverging sidewalls can be related to the center plane of the first diffuser symmetrical or done asymmetrically.
  • an ambient air inlet gap is provided at the beginning of the second diffuser. Because of the high exit pulse comes from the first diffuser stage it draws in secondary air from the environment through the ambient air inlet gap.
  • the Width of the ambient air inlet gap adjustable. there the ambient air inlet gap can preferably be set in this way that the volume flow of the suctioned Secondary air up to 30% of the volume flow entering Process air.
  • the second is expedient Height-adjustable diffuser, preferably stepless height-adjustable. This allows the distance to the storage device or to be varied to the lay-off belt. It should be emphasized that with the laying unit according to the invention an effective one from the two diffusers aerodynamic decoupling between filament formation area and storage area can be achieved.
  • the system according to the invention a laying unit without Air guide organs or without a diffuser can have. Then the filament-air mixture emerges from the drawing unit from and directly meets the air guiding system Depositing device or on the deposit screen belt.
  • the filaments electrostatically after exiting the drawing unit be influenced and either by a static or dynamic field.
  • the Filaments so charged that they touch each other the filaments is prevented.
  • the Filaments then through a second electric field to one Movement causes optimal storage Has.
  • the then possibly still adhering to the filaments Charge is, for example, by a special conductive Deposit screen belt and / or by means of suitable unloading devices derived from the filaments.
  • the storage device a continuously moving sieve belt for the Spunbonded web and has at least one under the Discharge screen provided suction device.
  • At least a suction device is preferably a suction fan educated. This is expediently at least one controllable and / or adjustable suction fan.
  • According to a very preferred embodiment of the invention are in Direction of movement of the deposit screen belt at least three Suction areas arranged one behind the other, with a main suction area arranged in the storage area of the spunbonded nonwoven web is, with a first suction area in front of the storage area and wherein a second suction area after the storage area is arranged.
  • the first suction area is therefore in Production direction in front of the storage area or in front of the Main suction area arranged and the second suction area is the storage area or main suction area in Subordinate production direction.
  • the main suction area from the first suction area and from the second suction area through corresponding walls Cut.
  • the walls of the main suction area are preferably formed like a nozzle. It is within the Invention that the suction speed in the main suction area is greater than the suction speeds in the first Suction area and in the second suction area.
  • the invention Plant is particularly suitable for a wide application also for polyester filaments. With the invention Plant can produce very uniform, homogeneous nonwovens be distinguished by an optically high quality distinguished.
  • the figures show a plant for continuous production a spunbonded web made of aerodynamically stretched Filaments made of thermoplastic.
  • the System has a spinnerette 1 and one below the Spinnerette 1 arranged cooling chamber 2, in the process air is insertable for cooling the filaments.
  • To the Cooling chamber 2 connects an intermediate channel 3. After this Intermediate channel 3 is followed by a stretching unit 4 with a Pull channel 5.
  • Is below the laying unit 6 a filing device in the form of a continuous moving sieve belt 7 for depositing the filaments Nonwoven web provided.
  • Fig. 2 shows the cooling chamber 2 of the system according to the invention and the air supply cabin arranged next to the cooling chamber 2 8.
  • the air supply cabin 8 is in the embodiment into an upper cabin section 8a and a lower one Cabin section 8b divided. From the two cabin sections 8a, 8b is process air of different temperatures fed. Appropriately and in the exemplary embodiment comes from the upper cabin section 8a Process air with a temperature between 18 ° C and 70 ° C into the cooling chamber. Preferably gets out of the lower one Cabin section 8b process air with a temperature between 18 ° C and 35 ° C in the cooling chamber 2. Has preferred that emerging from the upper cabin section 8a Process air a higher temperature than that from the bottom Process air exiting cabin section 8b.
  • the process air in principle can emerge from the upper cabin section 8a Process air but also have a lower temperature than that emerging from the lower cabin section 8b Process air.
  • the process air is by the way emerging from the spinnerette 1 and not shown Filaments sucked in.
  • Conveniently and in The embodiment is on the car sections 8a, 8b one blower 9a, 9b each for supplying process air connected. It is within the scope of the invention that the volume flows of the supplied process air can be regulated are.
  • the temperature of the respective in the upper cabin section 8a or in the lower Process air entering the cabin section 8b can be regulated.
  • the cabin sections 8a, 8b both to the right and to the left of the cooling chamber 2 are arranged.
  • left halves of the cabin sections 8a, 8b are also connected to the corresponding blowers 9a, 9b.
  • FIG. 2 it can be seen that between the Nozzle plate 10 of the spinnerette 1 and the air supply cabin 8 a monomer suction device 27 is arranged with the disruptive gases from the spinning process Attachment can be removed.
  • the monomer suction device 27 has a suction chamber 28 and one the suction chamber 28 connected suction fan 29 on.
  • a first suction slot 30 provided in the lower area of the suction chamber 28 .
  • second suction slot 31 arranged in the upper area of the suction chamber 28 arranged.
  • the second suction slot 31 narrower than the first suction slot 30. With the additional second suction slot 31 Turbulence between the nozzle plate according to the invention 10 and the monomer suction device 27 avoided.
  • Fig. 1 it can be seen that the intermediate channel 3 from Exit of the cooling chamber 2 to the entrance of the lower duct 5 of the stretching unit 4 in the form of a wedge in vertical section converges and expediently and in the embodiment on the entrance width of the lower channel 5.
  • the lower channel 5 runs to Laying unit 6 wedge-shaped in vertical section together. It is within the scope of the invention that Channel width of the lower channel 5 is adjustable.
  • each diffuser 13, 14 has an upper converging one Part as well as a lower diverging part having.
  • each diffuser 13, 14 has a narrowest Place between the upper converging part and the lower divergent part. It comes in the first diffuser 13 to reduce the stretching of the filaments necessary high air speeds at the end of the Stretching unit 4. This results in a clear Pressure recovery.
  • the first diffuser 13 has a diverging one Area 32, whose side walls 16, 17th are adjustable like a flap.
  • Opening angle ⁇ of the diverging area 32 is set become.
  • This opening angle ⁇ is expedient between 0.5 and 3 ° and is preferably 1 ° or about 1 °.
  • the opening angle ⁇ is preferably stepless adjustable.
  • the adjustment of the side walls 16, 17 can both symmetrical and asymmetrical to the median plane M respectively.
  • the second diffuser 14 secondary air is drawn in through the ambient air inlet gap 15 according to the injector principle. Due to the high output impulse of the process air from the first diffuser 13, the secondary air is sucked in from the environment through this ambient air inlet gap 15.
  • the width of the ambient air inlet gap 15 is expediently and adjustable in the exemplary embodiment.
  • the opening angle ⁇ of the second diffuser 14 is preferably also infinitely adjustable.
  • the second diffuser 14 is adjustable in height. In this way, the distance a between the second diffuser 14 and the lay-off belt 7 can be adjusted.
  • the width of the ambient air inlet gap 15 can be adjusted by the height adjustability of the second diffuser 14 and / or by the pivotability of the side walls 16, 17 in the diverging area 32 of the first diffuser 13. It is within the scope of the invention that the ambient air inlet gap 15 is set in such a way that the secondary air flows in tangentially.
  • some characteristic dimensions of the laying unit 6 are shown in FIG. 3.
  • the distance S 2 between the central plane M and a side wall 16, 17 of the first diffuser 13 is expediently 0.8 S 1 to 2.5 S 1 (S 1 corresponds to the distance between the central plane M and the side wall at the narrowest point of the first diffuser 13).
  • the distance s 3 of the center plane M to the side wall at the narrowest point of the second diffuser 14 is preferably 0.5 S 2 to 2 S 2 .
  • the distance S 4 of the central plane M to the lower edge of the side wall of the second diffuser 14 is 1 S 2 to 10 S 2 .
  • the length L 2 has a value from 1 S 2 to 15 S 2 .
  • Various variable values are possible for the width of the ambient air inlet gap 15.
  • the unit Cooling chamber 2, intermediate channel 3, stretching unit 4 and laying unit 6, apart from the air intake in the Cooling chamber 2 and the air inlet at the ambient air inlet gap 15 forms a closed system.
  • FIG. 4 shows a continuously moving sieve belt 7 for the spunbonded web, not shown.
  • a main suction area 19 is provided in the storage area of the spunbonded nonwoven web.
  • a first one Suction area 18 is in front of the storage area or in front of the Main suction area 19 arranged.
  • a second suction area 20 is connected downstream of the main suction area 19. in principle can each suction area 18, 19, 20 a separate Suction fan can be assigned. But it is also in the frame of the invention that only one suction fan is provided and that the respective suction conditions in the Suction areas 18, 19, 20 with the help of actuating and Throttle bodies can be adjusted.
  • the first suction area 18 is delimited by the walls 21 and 22.
  • the second Suction area 20 is through the walls 23 and 24 limited.
  • the walls 22, 23 of the main suction area 19 preferably form and in the embodiment Nozzle contour.
  • the suction speed in the main suction area 19 is expediently higher than the suction speeds in the first suction area 18 and in the second Suction area 20. It is within the scope of the invention that the suction power in the main suction area 19 independently of the suction power in the first suction area 18 and second suction area 20 is controlled and / or regulated.
  • the task of the first suction area 18 is the air volumes supplied with the lay-off belt 7 dissipate and the flow vectors on the border to Main suction area 19 orthogonal to the lay-off belt 7 align.
  • the first serves Suction area 18, filaments already deposited here keep functionally reliable on the lay-off belt 7.
  • the main suction area 19 is to be carried along with the filaments Air can flow freely, so that Spunbonded can be deposited functionally safe.
  • the second Suction area 20, which follows the main suction area 19 is used to secure transport or Holding the deposited spunbonded fabric on the deposit screen belt 7. It is within the scope of the invention that at least a part of the second suction area 20 in the transport direction of the lay-off belt 7 in front of the pressure roller pair 33 is arranged. Expediently there is at least one Third of the length of the second suction area 20, preferably at least half the length of the second Suction area 20, based on the direction of transport the pressure roller pair 33.

Abstract

Apparatus for producing spunbonded fabric from aerodynamically stretched thermoplastic filaments comprises a spinneret (1), a cooling chamber (2), into which cooling air is fed from a feed chamber (8), a stretching unit (4) with stretching channel (5) and a moving wire (7) , on which the fabric is laid down. The air feed chamber consists of two sections (8a, 8b), through which air at different temperatures is fed.

Description

Die Erfindung betrifft eine Anlage zur kontinuierlichen Herstellung einer Spinnvliesbahn aus aerodynamisch verstreckten Filamenten aus thermoplastischem Kunststoff mit einer Spinnerette, einer Kühlkammer, in die Prozessluft zur Kühlung der Filamente aus einer Luftzufuhrkabine einführbar ist, einer Verstreckeinheit mit einem Unterziehkanal und mit einer Ablegeeinrichtung zur Ablage der Filamente zur Spinnvliesbahn. - Der Ausdruck Prozessluft bezeichnet Kühlluft zur Kühlung der Filamente.The invention relates to a plant for continuous Production of a spun-bonded nonwoven web from aerodynamically stretched Filaments made of thermoplastic with a spinnerette, a cooling chamber, into the process air Cooling of the filaments can be introduced from an air supply cabin is, a stretching unit with a pull channel and with a depositing device for depositing the filaments Spunbond web. - The term process air denotes cooling air for cooling the filaments.

Eine bekannte Anlage der eingangs genannten Art (DE 196 20 379 C2), von der die Erfindung ausgeht, hat sich grundsätzlich zur Herstellung einer Spinnvliesbahn aus aerodynamisch verstreckten Filmanten bewährt. Bei dieser Anlage wird die Verstreckeinheit aerodynamisch entkoppelt von einem Verlegesystem, das einen Diffusor aufweist. Hier findet eine saubere funktionelle Trennung zwischen der Verstreckeinheit und der Verlegeeinheit statt. Dazu ist der Unterziehkanal in Bezug auf die Spaltdicke als die Verlegeeinheit von der Verstreckeinheit aerodynamisch abkoppelnder Sperrluftschacht ausgebildet. Der Begriff Sperrluftschacht besagt, dass beim Betrieb der Anlage stets Prozessluft aus dem Unterziehkanal austritt und in den Diffusor eintritt, jedoch mit einem Mengenstrom und einer kinetischen Energie, die verhindert, dass sich Druckänderungen in der Verlegeeinheit auf die aerodynamischen Verhältnisse im Anblassystem bzw. in der Kühlkammer störend auswirken und umgekehrt. Deshalb kann bei dieser Anlage der Kühlvorgang bzw. Anblasvorgang in der Kühlkammer optimiert werden, ohne dass diese Optimierung den Verlegevorgang und damit die Spinnvliesbildung störend beeinträchtigt. Umgekehrt kann das Verlegesystem in Bezug auf die Spinnvliesbildung optimiert werden, ohne dass das Anblassystem bzw. Kühlsystem Störungen erfährt. Die unter der Spinnerette angeordnete Kühlkammer dieser Anlage weist im Übrigen ein Anblasgebläse auf, mit dem die Prozessluft zur Kühlung der Filamente an die Filamente angeblasen wird. - Wenn die Filamentgeschwindigkeit und die Filamentfeinheit gesteigert werden soll (z.B. Verringerung des Titers auf Werte deutlich unter 1), stößt man jedoch an die Grenzen dieser bekannten Anlage. Der bei dieser Anlage durchgeführte Anblasvorgang ist für höhere Durchsätze nicht geeignet, weil es zu Problemen bei der Filamentbildung kommt. Eine resultierende Eigenbewegung der Filamente führt dazu, dass sich die Filamente aufeinander zu bewegen und deshalb nur als Filamentbündel abgelegt werden können. Wenn bei der bekannten Anlage die Luftgeschwindigkeit zur Steigerung der Filamentgeschwindigkeit erhöht wird, führt dies zu einer Intensivierung der Kühlung der Filamente. Diese intensive Kühlung bedingt ein frühzeitiges Einfrieren der Filamente und somit eine Limitierung für die Filamentgeschwindigkeit bzw. für die Filamentfeinheit.A known system of the type mentioned (DE 196 20 379 C2), from which the invention is based, has basically for the production of a spunbonded nonwoven web aerodynamically stretched film types proven. At this System, the stretching unit is aerodynamically decoupled of a laying system that has a diffuser. Here finds a clean functional separation between the Stretching unit and the laying unit instead. This is the Underlay channel in terms of the gap thickness as the laying unit aerodynamically decoupling from the stretching unit Air purge trained. The term sealing air duct states that process air is always out when the system is in operation exits the undergarment channel and enters the diffuser, but with a mass flow and a kinetic energy, which prevents pressure changes in the installation unit on the aerodynamic conditions in the blowing system or interfere in the cooling chamber and vice versa. Therefore, the cooling process can be carried out with this system or blowing process in the cooling chamber can be optimized without that this optimization of the laying process and thus the Spunbond formation impaired. Conversely, can the laying system is optimized with regard to spunbond formation without the blowing system or cooling system Experiences disturbances. The one located under the spinnerette The cooling chamber of this system also has a blowing fan with which the process air for cooling the filaments on the filaments are blown. - If the filament speed and the filament fineness should be increased (e.g. reduction of the titer to values well below 1), however, one reaches the limits of this known system. The blowing process performed on this system is for higher throughputs are not suitable because of problems with them the filament formation comes. A resulting own movement the filaments leads to the filaments being on top of each other to move and therefore only filed as a bundle of filaments can be. If the known system Air speed to increase filament speed is increased, this leads to an intensification of the Cooling the filaments. This intensive cooling is necessary early freezing of the filaments and thus one Limitation for the filament speed or for the Filament fineness.

Demgegenüber liegt der Erfindung das technische Problem zugrunde, eine Anlage der eingangs genannten Art anzugeben, mit der höhere Filamentgeschwindigkeiten und gesteigerte Filamentfeinheiten erreicht werden können und bei der die vorstehend beschriebenen Probleme effektiv vermieden werden können. In contrast, the invention is the technical problem based on specifying an installation of the type mentioned at the outset, with the higher filament speeds and increased Filament fineness can be achieved and at which the problems described above can be effectively avoided can.

Zur Lösung dieses technischen Problems lehrt die Erfindung eine Anlage der eingangs beschriebenen Art, welche dadurch gekennzeichnet ist, dass die neben der Kühlkammer angeordnete Luftzufuhrkabine in zumindest zwei Kabinenabschnitte unterteilt ist, aus denen Prozessluft unterschiedlicher Temperatur zuführbar ist. - Es liegt im Rahmen der Erfindung, dass die Luftzufuhrkabine aus zumindest zwei vertikal übereinander angeordneten Kabinenabschnitten besteht. Zweckmäßigerweise sind lediglich zwei Kabinenabschnitte vertikal übereinander angeordnet. - Nach sehr bevorzugter Ausführungsform der Erfindung ist aus einem ersten Kabinenabschnitt Prozessluft mit einer Temperatur zwischen 15 °C und 75 °C, vorzugsweise zwischen 18 °C und 70 °C zuführbar und ist aus einem zweiten Kabinenabschnitt Prozessluft mit einer Temperatur zwischen 15 °C und 38 °C, vorzugsweise zwischen 18 °C und 35 °C zuführbar. Zweckmäßigerweise sind der erste und der zweite Kabinenabschnitt vertikal übereinander angeordnet und der erste Kabinenabschnitt bildet dabei den oberen Kabinenabschnitt und der zweite Kabinenabschnitt bildet den unteren Kabinenabschnitt. Es liegt im Rahmen der Erfindung, dass die aus dem oberen Kabinenabschnitt zugeführte Luft eine höhere Temperatur als die aus dem unteren Kabinenabschnitt zugeführte Luft aufweist. Grundsätzlich kann aber auch die aus dem oberen Kabinenabschnitt zugeführte Luft eine niedrigere Temperatur als die aus dem unteren Kabinenabschnitt zugeführte Luft aufweisen. Vorzugsweise ist an jeden Kabinenabschnitt zumindest ein Gebläse für die Zufuhr von Prozessluft angeschlossen. Es liegt im Rahmen der Erfindung, dass die Temperatur jedes Kabinenabschnittes geregelt werden kann. Es liegt weiterhin im Rahmen der Erfindung, dass die Volumenströme den einzelnen Kabinenabschnitten der zugeführten Luftströme geregelt werden können. Durch die Einstellung des Volumenstromes und der Temperatur insbesondere des oberen Kabinenabschnittes kann die Kühlung der Filamente so verringert werden, dass höhere Filamentgeschwindigkeiten möglich sind und feinere Filamente gesponnen werden können.The invention teaches to solve this technical problem a system of the type described above, which thereby is characterized in that the arranged next to the cooling chamber Air supply cabin in at least two cabin sections is divided, from which process air is different Temperature can be supplied. - It is within the scope of the invention that the air supply cabin is made up of at least two vertically there are superimposed cabin sections. Only two cabin sections are expedient arranged vertically one above the other. - After very preferred Embodiment of the invention is from a first Cabin section process air with a temperature between 15 ° C and 75 ° C, preferably between 18 ° C and 70 ° C feedable and is from a second cabin section Process air with a temperature between 15 ° C and 38 ° C, preferably between 18 ° C and 35 ° C can be supplied. Conveniently, are the first and second cabin sections arranged vertically one above the other and the first cabin section forms the upper cabin section and the second cabin section forms the lower cabin section. It is within the scope of the invention that the from upper cabin section air supplied a higher temperature than that fed from the lower cabin section Has air. Basically, however, can also be from the air supplied to the upper cabin section is lower Temperature than that from the lower cabin section have supplied air. Preferably everyone Cabin section at least one blower for the supply of Process air connected. It is within the Invention that the temperature of each cabin section can be regulated. It remains within the scope of the Invention that the volume flows the individual Cabin sections of the supplied air flows regulated can be. By setting the volume flow and the temperature in particular of the upper cabin section the cooling of the filaments can be reduced so that higher filament speeds are possible and finer Filaments can be spun.

Bei aus dem Stand der Technik bekannten Anlagen wird die Luftzufuhrkabine üblicherweise als Anblaskabine bezeichnet. Bei diesen Anlagen findet ein gezieltes Anblasen der Filamente bzw. des Filamentbündels mit Luft statt. Es liegt im Rahmen der Erfindung, dass bei der erfindungsgemäßen Anlage kein Anblasen der Filamente bzw. des Filamentbündels stattfindet. Vielmehr wird die Prozessluft von den Filamenten bzw. von dem Filamentvorhang angesaugt. Mit anderen Worten saugt das Filamentbündel die Prozessluft an, die es braucht. Es liegt somit im Rahmen der Erfindung, dass die Kühlkammer einem passiven System entspricht, bei dem ein Anblasen der Filamente nicht stattfindet, sondern lediglich ein Ansaugen von Prozessluft aus den Kabinenabschnitten erfolgt. Um die einzelnen Filamente bildet sich jeweils konzentrisch eine Grenzschicht aus Luft auf und aufgrund des Aufbaus dieser Grenzschichten saugen die Filamente bzw. saugt das Filamentbündel die Prozessluft an. Die Grenzschichten gewährleisten einen ausreichenden Abstand der Filamente zueinander. Indem auf eine aktive Anblasung verzichtet wird, kann wirksam dazu beigetragen werden, dass die Filamente keine Möglichkeiten zu störenden Auslenkungen haben und keine störenden Relativbewegungen der Filamente zueinander stattfinden. - Zwischen der Kühlkammer und den Kabinenabschnitten sind zweckmäßigerweise Wabengleichrichter vorgesehen.In systems known from the prior art, the Air supply cabin is commonly referred to as a blowing cabin. In these systems there is a targeted blowing on the Filaments or the filament bundle with air instead. It is within the scope of the invention that in the case of the invention System does not blow the filaments or the filament bundle takes place. Rather, the process air from the filaments or sucked in by the filament curtain. With others Words, the filament bundle sucks in the process air that it needs. It is therefore within the scope of the invention that the Cooling chamber corresponds to a passive system in which a The filaments are not blown, but only a suction of process air from the cabin sections he follows. The individual filaments are formed in each case concentrically on and due to an air boundary layer of these boundary layers, the filaments or the filament bundle sucks in the process air. The boundary layers ensure a sufficient distance from the Filaments to each other. By active blowing can be effectively contributed to the fact that the filaments have no possibility of disturbing deflections and have no disturbing relative movements of the filaments to each other. - Between the cooling chamber and the Cabin sections are expediently honeycomb rectifiers intended.

Aufgrund der erfindungsgemäßen Ausbildung der Kühlkammer bzw. der Unterteilung der Luftzufuhrkabine in Kabinenabschnitte und durch die Möglichkeit, Luftströme verschiedener Temperaturen bzw. verschiedener Volumenströme zuzuführen, kann eine effektive Trennung bzw. Entkopplung des Bereichs "Spinnen, Kühlung" von dem Bereich "Verstreckung, Unterziehung" erreicht werden. Mit anderen Worten können die Einflüsse, die Druckänderungen in der Verstreckeinheit auf die Bedingungen in der Kühlkammer haben, durch die erfindungsgemäßen Maßnahmen weitgehend kompensiert werden. Diese aerodynamische Entkopplung wird auch durch weitere nachfolgend behandelte erfindungsgemäße Merkmale unterstützt bzw. gefördert.Due to the inventive design of the cooling chamber or the division of the air supply cabin into cabin sections and through the possibility of different air flows To supply temperatures or different volume flows, can effectively separate or decouple the Area "spinning, cooling" from the area "drawing, Underdrawing "can be achieved. In other words the influences, the pressure changes in the drawing unit on the conditions in the cooling chamber through which Measures according to the invention are largely compensated for. This aerodynamic decoupling is also supported by others Features according to the invention discussed below are supported or promoted.

Die Spinnerette der Anlage weist Düsenbohrungen für den Austritt der Filamente auf. Nach sehr bevorzugter Ausführungsform, der im Rahmen der Erfindung ganz besondere Bedeutung zukommt, ist der gegenseitige Abstand der Düsenbohrungen der Spinnerette in der Mitte der Spinnerette größer als in den Außenbereichen. Der Abstand der Düsenbohrungen in der Düsenplatte der Spinnerette vergrößert sich also von außen zur Mitte hin. Durch diese Anordnung der Düsenbohrungen kann sehr wirksam ein ausreichender Mindestabstand zwischen den Filamenten gewährleistet werden.The spinnerette of the system has nozzle holes for the The filaments emerge. According to a very preferred embodiment, the very special in the context of the invention The mutual spacing of the nozzle bores is of importance the spinnerette in the middle of the spinnerette larger than in the outside areas. The distance between the nozzle bores enlarged in the nozzle plate of the spinnerette so from the outside towards the middle. By this arrangement the nozzle bores can be very effective a sufficient Minimum distance between the filaments guaranteed become.

Es liegt im Rahmen der Erfindung, dass die Luftzufuhrkabine mit Abstand zu der Düsenplatte der Spinnerette angeordnet ist und dass die Luftzufuhrkabine zweckmäßigerweise einige Zentimeter unterhalb der Düsenplatte angeordnet ist. Nach sehr bevorzugter Ausführungsform der Erfindung ist zwischen der Düsenplatte und der Luftzufuhrkabine eine Monomerabsaugungsvorrichtung angeordnet. Die Monomerabsaugungsvorrichtung saugt Luft aus dem Filamentbildungsraum direkt unterhalb der Düsenplatte ab, wodurch erreicht wird, dass die neben den Polymerfilamenten austretenden Gase wie Monomere, Oligomere, Zersetzungsprodukte und dergleichen aus der Anlage entfernt werden können. Im Übrigen kann mit der Monomerabsaugungsvorrichtung die Luftströmung unterhalb der Düsenplatte kontrolliert werden, die sonst wegen der indifferenten Verhältnisse nicht stationär sein könnte. Die Monomerabsaugungsvorrichtung weist zweckmäßigerweise eine Absaugungskammer auf, an die bevorzugt zumindest ein Absaugungsgebläse angeschlossen ist. Vorzugsweise weist die Absaugungskammer zum Filamentbildungsraum hin in ihrem unteren Bereich einen ersten Absaugungsschlitz auf. Nach sehr bevorzugter Ausführungsform weist die Absaugungskammer fernerhin in ihrem oberen Bereich einen zweiten Absaugungsschlitz auf. Mit der Absaugung durch diesen zweiten Absaugungsschlitz wird effektiv erreicht, dass sich störende Turbulenzen im Bereich zwischen der Düsenplatte und der Absaugungskammer nicht bilden können. Zweckmäßigerweise ist der mit der Monomerabsaugungsvorrichtung abgesaugte Volumenstrom regelbar.It is within the scope of the invention that the air supply cabin spaced from the nozzle plate of the spinnerette and that the air supply cabin is conveniently some Centimeters below the nozzle plate is arranged. To very preferred embodiment of the invention is between the nozzle plate and the air supply cabin a monomer suction device arranged. The monomer suction device sucks air directly from the filament formation space below the nozzle plate, whereby it is achieved that the gases emerging next to the polymer filaments such as Monomers, oligomers, decomposition products and the like can be removed from the system. Incidentally, can with the monomer suction device the air flow below the nozzle plate, which is otherwise due to the indifferent conditions could not be stationary. The Monomer suction device expediently has one Suction chamber to which preferably at least one Suction fan is connected. Preferably, the Suction chamber towards the filament formation space in your lower area a first suction slot. To very preferred embodiment has the suction chamber furthermore in its upper area a second suction slit on. With the suction through this second Suction slot is effectively achieved that itself disturbing turbulence in the area between the nozzle plate and cannot form the suction chamber. Conveniently, is the one with the monomer suction device extracted volume flow adjustable.

Es liegt im Rahmen der Erfindung, dass zwischen der Kühlkammer und der Verstreckeinheit ein Zwischenkanal angeordnet ist, welcher Zwischenkanal vom Austritt der Kühlkammer zum Eintritt des Unterziehkanals der Verstreckeinheit im Vertikalschnitt keilförmig zusammenläuft. Zweckmäßigerweise läuft der Zwischenkanal zum Eintritt des Unterziehkanals im Vertikalschnitt auf die Eintrittsbreite des Unterziehkanals keilförmig zusammen. Vorzugsweise sind unterschiedliche Steigungswinkel des Zwischenkanals einstellbar. Es liegt im Rahmen der Erfindung, dass die Geometrie des Zwischenkanals veränderbar ist, damit die Luftgeschwindigkeit erhöht werden kann. Auf diese Weise können unerwünschte, bei hohen Temperaturen auftretende Relaxationen der Filamente vermieden werden.It is within the scope of the invention that between the cooling chamber and the stretching unit is arranged an intermediate channel is which intermediate channel from the exit of the cooling chamber to enter the drawing channel of the drawing unit in the Vertical section converges in a wedge shape. Conveniently, the intermediate channel runs to the entrance of the lower channel in the Vertical section on the entrance width of the lower channel wedge-shaped together. Are preferably different Inclination angle of the intermediate channel adjustable. It is in the Framework of the invention that the geometry of the intermediate channel is changeable so that the air speed increases can be. In this way, undesirable, at high Relaxation of the filaments occurring at temperatures avoided become.

Der Erfindung liegt die Erkenntnis zugrunde, dass das oben genannte technische Problem effektiv gelöst werden kann und insbesondere die Filamentgeschwindigkeit und die Filamentfeinheit überraschend gesteigert werden können, wenn die erfindungsgemäßen Maßnahmen verwirklicht werden. Im Ergebnis werden Vliese mit optisch hoher Qualität erhalten. Der Erfindung liegt weiterhin die Erkenntnis zugrunde, dass für diese Lösung des technischen Problems eine aerodynamische Entkopplung der Kühlung der Filamente von der Verstreckung der Filamente erforderlich ist und dass diese aerodynamische Entkopplung durch Verwirklichung der beschriebenen erfindungsgemäßen Merkmale erreicht werden kann. Erfindungswesentlich ist hierfür zunächst die erfindungsgemäße Ausbildung der Kühlkammer bzw. der Luftzufuhrkabine sowie die Möglichkeit der Regelung verschiedener Temperaturen und Volumenströme der zugeführten Luft. Zur aerodynamischen Entkopplung tragen aber auch die weiteren vorstehend erläuterten erfindungsgemäßen Maßnahmen bei. Im Rahmen der Erfindung wird erreicht, dass die Filamentkühlung funktionssicher von der Filamentverstreckung entkoppelt wird bzw. aerodynamisch entkoppelt wird. Aerodynamische Entkopplung meint hier, dass sich Druckänderungen in der Verstreckeinheit zwar auf die Bedingungen in der Kühlkammer auswirken, dass jedoch durch die Einstellmöglichkeiten in der geteilten Luftzuführung diese Beeinflussung auf den Faden weitgehend kompensiert werden kann.The invention is based on the knowledge that the above mentioned technical problem can be solved effectively and especially the filament speed and filament fineness can be increased surprisingly if the Measures according to the invention can be realized. in the The result is nonwovens with optically high quality. The invention is further based on the finding that for this solution to the technical problem an aerodynamic Decoupling the cooling of the filaments from the Stretching of the filaments is necessary and that this aerodynamic decoupling by realizing the described inventive features can be achieved can. Essential to the invention is the inventive one Formation of the cooling chamber or the air supply cabin as well as the possibility of regulating various Temperatures and volume flows of the supplied air. to aerodynamic decoupling also carries the others Measures according to the invention explained above. in the Within the scope of the invention, the filament cooling is achieved reliable from filament stretching is decoupled or aerodynamically decoupled. Aerodynamic Decoupling here means that there are pressure changes in the drawing unit to the conditions in the Cooling chamber impact, however, through the adjustment options this influence in the divided air supply can be largely compensated for on the thread.

Es liegt im Rahmen der Erfindung, dass an die Verstreckeinheit eine Verlegeeinheit mit zumindest einem Diffusor anschließt. Vorzugsweise ist die Verlegeeinheit bzw. der Diffusor mehrstufig, bevorzugt zweistufig ausgebildet. Nach sehr bevorzugter Ausführungsform der Erfindung besteht die Verlegeeinheit aus einem ersten Diffusor und einem daran anschließenden zweiten Diffusor. Vorzugsweise ist zwischen dem ersten und dem zweiten Diffusor ein Umgebungslufteintrittsspalt vorgesehen. In dem ersten Diffusor kommt es zu einer Reduzierung der zur Verstreckung der Filamente notwendigen hohen Luftgeschwindigkeit am Ende des Unterziehkanals. Daraus resultiert ein deutlicher Druckrückgewinn. Vorzugsweise ist der Öffnungswinkel a in einem unteren divergierenden Bereich des ersten Diffusors stufenlos verstellbar. Dazu sind die divergierenden Seitenwände des ersten Diffusors verschwenkbar. Diese Verstellbarkeit der divergierenden Seitenwände kann in Bezug auf die Mittelebene des ersten Diffusors symmetrisch oder asymmetrisch erfolgen. Am Anfang des zweiten Diffusors ist ein Umgebungslufteintrittsspalt vorgesehen. Aufgrund des hohen Austrittsimpulses aus der ersten Diffusorstufe kommt es zu einem Ansaugen von Sekundärluft aus der Umgebung durch den Umgebungslufteintrittsspalt. Vorzugsweise ist die Weite des Umgebungslufteintrittsspaltes einstellbar. Dabei kann der Umgebungslufteintrittsspalt bevorzugt so eingestellt werden, dass der Volumenstrom der angesaugten Sekundärluft bis zu 30% des eintretenden Volumenstromes der Prozessluft beträgt. Zweckmäßigerweise ist der zweite Diffusor höhenverstellbar und zwar bevorzugt stufenlos höhenverstellbar. Dadurch kann der Abstand zur Ablegeeinrichtung bzw. zum Ablegesiebband variiert werden. Hervorzuheben ist, dass mit der erfindungsgemäßen Verlegeeinheit aus den beiden Diffusoren eine effektive aerodynamische Entkopplung zwischen Filamentbildungsbereich und Ablagebereich erzielt werden kann.It is within the scope of the invention that the stretching unit a laying unit with at least one diffuser followed. The laying unit or the Diffuser multi-stage, preferably two-stage. To very preferred embodiment of the invention Installation unit consisting of a first diffuser and one attached to it subsequent second diffuser. Preferably between the first and the second diffuser an ambient air inlet gap intended. It comes in the first diffuser to reduce the stretching of the filaments necessary high air speed at the end of the lower duct. This results in a significant pressure recovery. The opening angle a is preferably in one lower divergent area of the first diffuser infinitely adjustable. In addition there are the divergent side walls of the first diffuser. This adjustability the diverging sidewalls can be related to the center plane of the first diffuser symmetrical or done asymmetrically. At the beginning of the second diffuser an ambient air inlet gap is provided. Because of the high exit pulse comes from the first diffuser stage it draws in secondary air from the environment through the ambient air inlet gap. Preferably the Width of the ambient air inlet gap adjustable. there the ambient air inlet gap can preferably be set in this way that the volume flow of the suctioned Secondary air up to 30% of the volume flow entering Process air. The second is expedient Height-adjustable diffuser, preferably stepless height-adjustable. This allows the distance to the storage device or to be varied to the lay-off belt. It should be emphasized that with the laying unit according to the invention an effective one from the two diffusers aerodynamic decoupling between filament formation area and storage area can be achieved.

Grundsätzlich liegt es auch im Rahmen der Erfindung, dass die erfindungsgemäße Anlage eine Verlegeeinheit ohne Luftleitorgane bzw. ohne Diffusor aufweisen kann. Dann tritt das Filament-Luft-Gemisch aus der Verstreckeinheit aus und trifft ohne Luftleitorgane unmittelbar auf die Ablegeeinrichtung bzw. auf das Ablegesiebband. - Weiterhin liegt es auch im Rahmen der Erfindung, dass die Filamente nach dem Austritt aus der Verstreckeinheit elektrostatisch beeinflusst werden und dazu entweder durch ein statisches oder dynamisches Feld geführt werden. Dabei werden die Filamente so aufgeladen, dass eine gegenseitige Berührung der Filamente verhindert wird. Zweckmäßigerweise werden die Filamente dann durch ein zweites elektrisches Feld zu einer Bewegung veranlasst, die eine optimale Ablage zur Folge hat. Die dann eventuell noch an den Filamenten anhaftende Ladung wird beispielsweise durch ein spezielles leitfähiges Ablegesiebband und/oder durch geeignete Entladeeinrichtungen von den Filamenten abgeleitet. Basically, it is also within the scope of the invention that the system according to the invention a laying unit without Air guide organs or without a diffuser can have. Then the filament-air mixture emerges from the drawing unit from and directly meets the air guiding system Depositing device or on the deposit screen belt. - Farther it is also within the scope of the invention that the filaments electrostatically after exiting the drawing unit be influenced and either by a static or dynamic field. The Filaments so charged that they touch each other the filaments is prevented. Conveniently, the Filaments then through a second electric field to one Movement causes optimal storage Has. The then possibly still adhering to the filaments Charge is, for example, by a special conductive Deposit screen belt and / or by means of suitable unloading devices derived from the filaments.

Es liegt im Rahmen der Erfindung, dass die Ablegeeinrichtung ein kontinuierlich bewegtes Ablegesiebband für die Spinnvliesbahn aufweist und zumindest eine unter dem Ablegesiebband vorgesehene Saugeinrichtung. Die zumindest eine Saugeinrichtung ist vorzugsweise als Sauggebläse ausgebildet. Zweckmäßigerweise handelt es sich dabei um zumindest ein steuer- und/oder regelbares Sauggebläse. Nach sehr bevorzugter Ausführungsform der Erfindung sind in Bewegungsrichtung des Ablegesiebbandes zumindest drei Absaugbereiche hintereinander angeordnet, wobei ein Hauptabsaugbereich im Ablagebereich der Spinnvliesbahn angeordnet ist, wobei ein erster Saugbereich vor dem Ablagebereich und wobei ein zweiter Saugbereich nach dem Ablagebereich angeordnet ist. Der erste Saugbereich ist also in Produktionsrichtung vor dem Ablagebereich bzw. vor dem Hauptabsaugbereich angeordnet und der zweite Saugbereich ist dem Ablagebereich bzw. Hauptabsaugbereich in Produktionsrichtung nachgeordnet. Zweckmäßigerweise wird der Hauptabsaugbereich von dem ersten Saugbereich und von dem zweiten Saugbereich durch entsprechende Wandungen getrennt. Vorzugsweise sind die Wandungen des Hauptabsaugbereiches düsenartig ausgebildet. Es liegt im Rahmen der Erfindung, dass die Sauggeschwindigkeit im Hauptabsaugbereich größer ist als die Sauggeschwindigkeiten im ersten Saugbereich und im zweiten Saugbereich.It is within the scope of the invention that the storage device a continuously moving sieve belt for the Spunbonded web and has at least one under the Discharge screen provided suction device. At least a suction device is preferably a suction fan educated. This is expediently at least one controllable and / or adjustable suction fan. According to a very preferred embodiment of the invention are in Direction of movement of the deposit screen belt at least three Suction areas arranged one behind the other, with a main suction area arranged in the storage area of the spunbonded nonwoven web is, with a first suction area in front of the storage area and wherein a second suction area after the storage area is arranged. The first suction area is therefore in Production direction in front of the storage area or in front of the Main suction area arranged and the second suction area is the storage area or main suction area in Subordinate production direction. Expediently the main suction area from the first suction area and from the second suction area through corresponding walls Cut. The walls of the main suction area are preferably formed like a nozzle. It is within the Invention that the suction speed in the main suction area is greater than the suction speeds in the first Suction area and in the second suction area.

Mit der erfindungsgemäßen Anlage können im Vergleich zu der eingangs erläuterten aus dem Stand der Technik bekannten Anlage die Filamentgeschwindigkeit sowie die Filamentfeinheit beachtlich gesteigert werden. Es können somit höhere Filamentdurchsätze und Filamente mit feineren Titern erzielt werden. Problemlos ist eine Verringerung des Titers auf Werte deutlich unter 1 möglich. Die erfindungsgemäße Anlage eignet sich für eine breite Anwendung insbesondere auch für Polyesterfilamente. Mit der erfindungsgemäßen Anlage können sehr gleichmäßige homogene Vliese hergestellt werden, die sich durch eine optisch hohe Qualität auszeichnen.With the system according to the invention can in comparison to the initially explained from the prior art Attach the filament speed as well as the filament fineness be increased considerably. So it can higher filament throughputs and filaments with finer titers be achieved. A reduction in the titer is problem-free possible to values well below 1. The invention Plant is particularly suitable for a wide application also for polyester filaments. With the invention Plant can produce very uniform, homogeneous nonwovens be distinguished by an optically high quality distinguished.

Nachfolgend wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Es zeigen in schematischer Darstellung:

Fig. 1
einen Vertikalschnitt durch eine erfindungsgemäße Anlage,
Fig. 2
den vergrößerten Ausschnitt A aus dem Gegenstand der Fig. 1,
Fig. 3
den vergrößerten Ausschnitt B aus dem Gegenstand der Fig. 1 und
Fig. 4
den vergrößerten Ausschnitt C aus dem Gegenstand der Fig. 1.
The invention is explained in more detail below on the basis of a drawing which represents only one exemplary embodiment. In a schematic representation:
Fig. 1
a vertical section through a system according to the invention,
Fig. 2
the enlarged section A from the subject of Fig. 1,
Fig. 3
the enlarged section B from the subject of Fig. 1 and
Fig. 4
the enlarged section C from the subject of Fig. 1st

Die Figuren zeigen eine Anlage zur kontinuierlichen Herstellung einer Spinnvliesbahn aus aerodynamisch verstreckten Filamenten aus thermoplastischem Kunststoff. Die Anlage weist eine Spinnerette 1 sowie eine unterhalb der Spinnerette 1 angeordnete Kühlkammer 2 auf, in die Prozessluft zur Kühlung der Filamente einführbar ist. An die Kühlkammer 2 schließt ein Zwischenkanal 3 an. Nach dem Zwischenkanal 3 folgt eine Verstreckeinheit 4 mit einem Unterziehkanal 5. An den Unterziehkanal 5 schließt eine Verlegeeinheit 6 an. Unterhalb der Verlegeeinheit 6 ist eine Ablegeeinrichtung in Form eines kontinuierlich bewegten Ablegesiebbandes 7 zur Ablage der Filamente zur Spinnvliesbahn vorgesehen.The figures show a plant for continuous production a spunbonded web made of aerodynamically stretched Filaments made of thermoplastic. The System has a spinnerette 1 and one below the Spinnerette 1 arranged cooling chamber 2, in the process air is insertable for cooling the filaments. To the Cooling chamber 2 connects an intermediate channel 3. After this Intermediate channel 3 is followed by a stretching unit 4 with a Pull channel 5. One connects to pull channel 5 Laying unit 6. Is below the laying unit 6 a filing device in the form of a continuous moving sieve belt 7 for depositing the filaments Nonwoven web provided.

Fig. 2 zeigt die erfindungsgemäße Kühlkammer 2 der Anlage sowie die neben der Kühlkammer 2 angeordnete Luftzufuhrkabine 8. Die Luftzufuhrkabine 8 ist im Ausführungsbeispiel in einen oberen Kabinenabschnitt 8a und einen unteren Kabinenabschnitt 8b unterteilt. Aus den beiden Kabinenabschnitten 8a, 8b ist Prozessluft unterschiedlicher Temperatur zuführbar. Zweckmäßigerweise und im Ausführungsbeispiel gelangt aus dem oberen Kabinenabschnitt 8a Prozessluft mit einer Temperatur zwischen 18 °C und 70 °C in die Kühlkammer. Vorzugsweise gelangt aus dem unteren Kabinenabschnitt 8b Prozessluft mit einer Temperatur zwischen 18 °C und 35 °C in die Kühlkammer 2. Bevorzugt hat die aus dem oberen Kabinenabschnitt 8a austretende Prozessluft eine höhere Temperatur als die aus dem unteren Kabinenabschnitt 8b austretende Prozessluft. Grundsätzlich kann die aus dem oberen Kabinenabschnitt 8a austretende Prozessluft aber auch eine niedrigere Temperatur haben als die aus dem unteren Kabinenabschnitt 8b austretende Prozessluft. Die Prozessluft wird dabei im Übrigen von den aus der Spinnerette 1 austretenden und nicht dargestellten Filamenten angesaugt. Zweckmäßigerweise und im Ausführungsbeispiel ist an die Kabinenabschnitte 8a, 8b jeweils ein Gebläse 9a, 9b zur Zuführung von Prozessluft angeschlossen. Es liegt dabei im Rahmen der Erfindung, dass die Volumenströme der zugeführten Prozessluft regelbar sind. Erfindungsgemäß ist auch die Temperatur der jeweils in den oberen Kabinenabschnitt 8a oder in den unteren Kabinenabschnitt 8b eintretenden Prozessluft regelbar. Es liegt im Rahmen der Erfindung, dass die Kabinenabschnitte 8a, 8b sowohl rechts als auch links von der Kühlkammer 2 angeordnet sind. DieFig. 2 shows the cooling chamber 2 of the system according to the invention and the air supply cabin arranged next to the cooling chamber 2 8. The air supply cabin 8 is in the embodiment into an upper cabin section 8a and a lower one Cabin section 8b divided. From the two cabin sections 8a, 8b is process air of different temperatures fed. Appropriately and in the exemplary embodiment comes from the upper cabin section 8a Process air with a temperature between 18 ° C and 70 ° C into the cooling chamber. Preferably gets out of the lower one Cabin section 8b process air with a temperature between 18 ° C and 35 ° C in the cooling chamber 2. Has preferred that emerging from the upper cabin section 8a Process air a higher temperature than that from the bottom Process air exiting cabin section 8b. in principle can emerge from the upper cabin section 8a Process air but also have a lower temperature than that emerging from the lower cabin section 8b Process air. The process air is by the way emerging from the spinnerette 1 and not shown Filaments sucked in. Conveniently and in The embodiment is on the car sections 8a, 8b one blower 9a, 9b each for supplying process air connected. It is within the scope of the invention that the volume flows of the supplied process air can be regulated are. According to the invention, the temperature of the respective in the upper cabin section 8a or in the lower Process air entering the cabin section 8b can be regulated. It is within the scope of the invention that the cabin sections 8a, 8b both to the right and to the left of the cooling chamber 2 are arranged. The

linken Hälften der Kabinenabschnitte 8a, 8b sind ebenfalls an die entsprechenden Gebläse 9a, 9b angeschlossen.left halves of the cabin sections 8a, 8b are also connected to the corresponding blowers 9a, 9b.

Insbesondere in der Fig. 2 ist erkennbar, dass zwischen der Düsenplatte 10 der Spinnerette 1 und der Luftzufuhrkabine 8 eine Monomerabsaugungsvorrichtung 27 angeordnet ist, mit der beim Spinnprozess auftretende störende Gase aus der Anlage entfernt werden können. Die Monomerabsaugungsvorrichtung 27 weist eine Absaugungskammer 28 sowie ein an die Absaugungskammer 28 angeschlossenes Absaugungsgebläse 29 auf. Im unteren Bereich der Absaugungskammer 28 ist ein erster Absaugungsschlitz 30 vorgesehen. Erfindungsgemäß ist zusätzlich im oberen Bereich der Absaugungskammer 28 ein zweiter Absaugungsschlitz 31 angeordnet. Zweckmäßigerweise und im Ausführungsbeispiel ist der zweite Absaugungsschlitz 31 schmaler als der erste Absaugungsschlitz 30 ausgeführt. Mit dem zusätzlichen zweiten Absaugungsschlitz 31 werden erfindungsgemäß störende Turbulenzen zwischen der Düsenplatte 10 und der Monomerabsaugungsvorrichtung 27 vermieden.In particular in FIG. 2 it can be seen that between the Nozzle plate 10 of the spinnerette 1 and the air supply cabin 8 a monomer suction device 27 is arranged with the disruptive gases from the spinning process Attachment can be removed. The monomer suction device 27 has a suction chamber 28 and one the suction chamber 28 connected suction fan 29 on. In the lower area of the suction chamber 28 is a first suction slot 30 provided. According to the invention additionally in the upper area of the suction chamber 28 second suction slot 31 arranged. Conveniently, and in the embodiment is the second suction slot 31 narrower than the first suction slot 30. With the additional second suction slot 31 Turbulence between the nozzle plate according to the invention 10 and the monomer suction device 27 avoided.

In Fig. 1 ist erkennbar, dass der Zwischenkanal 3 vom Austritt der Kühlkammer 2 zum Eintritt des Unterziehkanals 5 der Verstreckeinheit 4 im Vertikalschnitt keilförmig zusammenläuft und zwar zweckmäßigerweise und im Ausführungsbeispiel auf die Eintrittsbreite des Unterziehkanals 5. Nach sehr bevorzugter Ausführungsform der Erfindung und im Ausführungsbeispiel sind unterschiedliche Steigungswinkel des Zwischenkanals 3 einstellbar. Vorzugsweise und im Ausführungsbeispiel läuft der Unterziehkanal 5 zur Verlegeeinheit 6 hin im Vertikalschnitt keilförmig zusammen. Es liegt im Rahmen der Erfindung, dass die Kanalweite des Unterziehkanals 5 einstellbar ist.In Fig. 1 it can be seen that the intermediate channel 3 from Exit of the cooling chamber 2 to the entrance of the lower duct 5 of the stretching unit 4 in the form of a wedge in vertical section converges and expediently and in the embodiment on the entrance width of the lower channel 5. After a very preferred embodiment of the invention and in the exemplary embodiment there are different pitch angles of the intermediate channel 3 adjustable. Preferably and in the exemplary embodiment, the lower channel 5 runs to Laying unit 6 wedge-shaped in vertical section together. It is within the scope of the invention that Channel width of the lower channel 5 is adjustable.

Insbesondere in der Fig. 3 ist erkennbar, dass die Verlegeeinheit 6 aus einem ersten Diffusor 13 und einem daran anschließenden zweiten Diffusor 14 besteht und dass zwischen dem ersten Diffusor 13 und dem zweiten Diffusor 14 ein Umgebungslufteintrittsspalt 15 vorgesehen ist. Fig. 3 zeigt, dass jeder Diffusor 13, 14 ein oberen konvergierendes Teil sowie ein unteres divergierendes Teil aufweist. Folglich hat jeder Diffusor 13, 14 eine engste Stelle zwischen dem oberen konvergierenden Teil und dem unteren divergierenden Teil. Im ersten Diffusor 13 kommt es zu einer Reduzierung der zur Verstreckung der Filamente notwendigen hohen Luftgeschwindigkeiten am Ende der Verstreckeinheit 4. Dadurch resultiert ein deutlicher Druckrückgewinn. Der erste Diffusor 13 weist einen divergierenden Bereich 32 auf, dessen Seitenwände 16, 17 klappenartig verstellbar sind. Auf diese Weise kann ein Öffnungswinkel α des divergierenden Bereiches 32 eingestellt werden. Dieser Öffnungswinkel α liegt zweckmäßigerweise zwischen 0,5 und 3° und beträgt vorzugsweise 1° oder etwa 1°.Der Öffnungswinkel α ist bevorzugt stufenlos einstellbar. Die Verstellung der Seitenwände 16, 17 kann sowohl symmetrisch als auch asymmetrisch zur Mittelebene M erfolgen.In particular in FIG. 3 it can be seen that the Laying unit 6 from a first diffuser 13 and a adjoining second diffuser 14 and that between the first diffuser 13 and the second diffuser 14 an ambient air inlet gap 15 is provided. Fig. 3 shows that each diffuser 13, 14 has an upper converging one Part as well as a lower diverging part having. As a result, each diffuser 13, 14 has a narrowest Place between the upper converging part and the lower divergent part. It comes in the first diffuser 13 to reduce the stretching of the filaments necessary high air speeds at the end of the Stretching unit 4. This results in a clear Pressure recovery. The first diffuser 13 has a diverging one Area 32, whose side walls 16, 17th are adjustable like a flap. In this way, a Opening angle α of the diverging area 32 is set become. This opening angle α is expedient between 0.5 and 3 ° and is preferably 1 ° or about 1 °. The opening angle α is preferably stepless adjustable. The adjustment of the side walls 16, 17 can both symmetrical and asymmetrical to the median plane M respectively.

Zu Beginn des zweiten Diffusors 14 wird durch den Umgebungslufteintrittsspalt 15 Sekundärluft nach dem Injektorprinzip angesaugt. Aufgrund des hohen Austrittsimpulses der Prozessluft aus dem ersten Diffusor 13 wird die Sekundärluft aus der Umgebung über diesen Umgebungslufteintrittsspalt 15 angesaugt. Die Weite des Umgebungslufteintrittsspaltes 15 ist zweckmäßigerweise und im Ausführungsbeispiel einstellbar. Weiterhin ist auch der Öffnungswinkel β des zweiten Diffusors 14 vorzugsweise stufenlos verstellbar. Außerdem ist der zweite Diffusor 14 höhenverstellbar eingerichtet. Auf diese Weise kann der Abstand a des zweiten Diffusors 14 zum Ablegesiebband 7 eingestellt werden. Durch die Höhenverstellbarkeit des zweiten Diffusors 14 und/oder durch die Verschwenkbarkeit der Seitenwände 16, 17 im divergierenden Bereich 32 des ersten Diffusors 13 kann die Weite des Umgebungslufteintrittsspaltes 15 eingestellt werden. Es liegt im Rahmen der Erfindung, dass der Umgebungslufteintrittsspalt 15 so eingestellt wird, dass ein tangentiales Zuströmen der Sekundärluft erfolgt. In der Fig. 3 sind im Übrigen einige charakteristische Abmessungen der Verlegeeinheit 6 eingezeichnet. Der Abstand S2 zwischen der Mittelebene M und einer Seitenwand 16, 17 des ersten Diffusors 13 beträgt zweckmäßigerweise 0,8 S1 bis 2,5 S1 (S1 entspricht dabei dem Abstand der Mittelebene M zur Seitenwandung an der engsten Stelle des ersten Diffusors 13). Der Abstand s3 der Mittelebene M zur Seitenwandung an der engsten Stelle des zweiten Diffusors 14 beträgt vorzugsweise 0,5 S2 bis 2 S2. Der Abstand S4 der Mittelebene M zur unteren Kante der Seitenwandung des zweiten Diffusors 14 beträgt 1 S2 bis 10 S2. Die Länge L2 hat einen Wert von 1 S2 bis 15 S2. Für die Weite des Umgebungslufteintrittsspaltes 15 sind verschiedene variable Werte möglich.At the beginning of the second diffuser 14, secondary air is drawn in through the ambient air inlet gap 15 according to the injector principle. Due to the high output impulse of the process air from the first diffuser 13, the secondary air is sucked in from the environment through this ambient air inlet gap 15. The width of the ambient air inlet gap 15 is expediently and adjustable in the exemplary embodiment. Furthermore, the opening angle β of the second diffuser 14 is preferably also infinitely adjustable. In addition, the second diffuser 14 is adjustable in height. In this way, the distance a between the second diffuser 14 and the lay-off belt 7 can be adjusted. The width of the ambient air inlet gap 15 can be adjusted by the height adjustability of the second diffuser 14 and / or by the pivotability of the side walls 16, 17 in the diverging area 32 of the first diffuser 13. It is within the scope of the invention that the ambient air inlet gap 15 is set in such a way that the secondary air flows in tangentially. In addition, some characteristic dimensions of the laying unit 6 are shown in FIG. 3. The distance S 2 between the central plane M and a side wall 16, 17 of the first diffuser 13 is expediently 0.8 S 1 to 2.5 S 1 (S 1 corresponds to the distance between the central plane M and the side wall at the narrowest point of the first diffuser 13). The distance s 3 of the center plane M to the side wall at the narrowest point of the second diffuser 14 is preferably 0.5 S 2 to 2 S 2 . The distance S 4 of the central plane M to the lower edge of the side wall of the second diffuser 14 is 1 S 2 to 10 S 2 . The length L 2 has a value from 1 S 2 to 15 S 2 . Various variable values are possible for the width of the ambient air inlet gap 15.

Es liegt im Rahmen der Erfindung, dass das Aggregat aus Kühlkammer 2, Zwischenkanal 3, Verstreckeinheit 4 und Verlegeeinheit 6, abgesehen von der Luftansaugung in der Kühlkammer 2 und dem Lufteintritt am Umgebungslufteintrittsspalt 15 ein geschlossenes System bildet.It is within the scope of the invention that the unit Cooling chamber 2, intermediate channel 3, stretching unit 4 and laying unit 6, apart from the air intake in the Cooling chamber 2 and the air inlet at the ambient air inlet gap 15 forms a closed system.

Fig. 4 zeigt ein kontinuierlich bewegtes Ablegesiebband 7 für die nicht dargestellte Spinnvliesbahn. Vorzugsweise und im Ausführungsbeispiel sind in Bewegungsrichtung des Ablegesiebbandes 7 drei Absaugbereiche 18, 19, 20 hintereinander angeordnet. Im Ablagebereich der Spinnvliesbahn ist ein Hauptabsaugbereich 19 vorgesehen. Ein erster Absaugbereich 18 ist vor dem Ablagebereich bzw. vor dem Hauptabsaugbereich 19 angeordnet. Ein zweiter Absaugbereich 20 ist dem Hauptabsaugbereich 19 nachgeschaltet. Grundsätzlich kann jedem Absaugbereich 18, 19, 20 ein separates Sauggebläse zugeordnet sein. Es liegt aber auch im Rahmen der Erfindung, dass lediglich ein Sauggebläse vorgesehen ist und dass die jeweiligen Saugbedingungen in den Absaugbereichen 18, 19, 20 mit Hilfe von Stell- und Drosselorganen eingestellt werden. Der erste Absaugbereich 18 wird durch die Wandungen 21 und 22 begrenzt. Der zweite Absaugbereich 20 wird durch die Wandungen 23 und 24 begrenzt. Die Wandungen 22, 23 des Hauptabsaugbereiches 19 bilden vorzugsweise und im Ausführungsbeispiel eine Düsenkontur. Die Absauggeschwindigkeit im Hauptabsaugbereich 19 ist zweckmäßigerweise höher als die Absauggeschwindigkeiten im ersten Absaugbereich 18 und im zweiten Absaugbereich 20. Es liegt im Rahmen der Erfindung, dass die Saugleistung in dem Hauptabsaugbereich 19 unabhängig von den Saugleistungen im ersten Absaugbereich 18 und im zweiten Absaugbereich 20 gesteuert und/oder geregelt wird. Die Aufgabe des ersten Absaugbereiches 18 besteht darin, die mit dem Ablegesiebband 7 zugeführten Luftmengen abzuführen und die Strömungsvektoren an der Grenze zum Hauptabsaugbereich 19 orthogonal bezüglich des Ablegesiebbandes 7 auszurichten. Im Übrigen dient der erste Absaugbereich 18 dazu, hier bereits abgelegte Filamente funktionssicher auf dem Ablegesiebband 7 zu halten. Im Hauptabsaugbereich 19 soll die mit den Filamenten mitgeführte Luft ungehindert abströmen können, so dass das Spinnvlies funktionssicher abgelegt werden kann. Der zweite Absaugbereich 20, der dem Hauptabsaugbereich 19 nachgeschaltet ist, dient zur Transportsicherung bzw. zum Festhalten des abgelegten Spinnvlieses auf dem Ablegesiebband 7. Es liegt im Rahmen der Erfindung, dass zumindest ein Teil des zweiten Absaugbereiches 20 in Transportrichtung des Ablegesiebbandes 7 vor dem Andrückwalzenpaar 33 angeordnet ist. Zweckmäßigerweise liegt zumindest ein Drittel der Länge des zweiten Absaugbereicheiches 20, vorzugsweise zumindest die Hälfte der Länge des zweiten Absaugbereiches 20, bezogen auf die Transportrichtung, vor dem Andrückwalzenpaar 33.4 shows a continuously moving sieve belt 7 for the spunbonded web, not shown. Preferably and in the embodiment are in the direction of movement Deposit screen belt 7 three suction areas 18, 19, 20 in a row arranged. In the storage area of the spunbonded nonwoven web a main suction area 19 is provided. A first one Suction area 18 is in front of the storage area or in front of the Main suction area 19 arranged. A second suction area 20 is connected downstream of the main suction area 19. in principle can each suction area 18, 19, 20 a separate Suction fan can be assigned. But it is also in the frame of the invention that only one suction fan is provided and that the respective suction conditions in the Suction areas 18, 19, 20 with the help of actuating and Throttle bodies can be adjusted. The first suction area 18 is delimited by the walls 21 and 22. The second Suction area 20 is through the walls 23 and 24 limited. The walls 22, 23 of the main suction area 19 preferably form and in the embodiment Nozzle contour. The suction speed in the main suction area 19 is expediently higher than the suction speeds in the first suction area 18 and in the second Suction area 20. It is within the scope of the invention that the suction power in the main suction area 19 independently of the suction power in the first suction area 18 and second suction area 20 is controlled and / or regulated. The task of the first suction area 18 is the air volumes supplied with the lay-off belt 7 dissipate and the flow vectors on the border to Main suction area 19 orthogonal to the lay-off belt 7 align. Incidentally, the first serves Suction area 18, filaments already deposited here keep functionally reliable on the lay-off belt 7. in the The main suction area 19 is to be carried along with the filaments Air can flow freely, so that Spunbonded can be deposited functionally safe. The second Suction area 20, which follows the main suction area 19 is used to secure transport or Holding the deposited spunbonded fabric on the deposit screen belt 7. It is within the scope of the invention that at least a part of the second suction area 20 in the transport direction of the lay-off belt 7 in front of the pressure roller pair 33 is arranged. Expediently there is at least one Third of the length of the second suction area 20, preferably at least half the length of the second Suction area 20, based on the direction of transport the pressure roller pair 33.

Claims (10)

Anlage zur kontinuierlichen Herstellung einer Spinnvliesbahn aus aerodynamisch verstreckten Filamenten aus thermoplastischem Kunststoff mit einer Spinnerette (1), einer Kühlkammer (2), in die Prozessluft zur Kühlung der Filamente aus einer Luftzufuhrkabine (8) einführbar ist, einer Verstreckeinheit (4) mit einem Unterziehkanal (5) und mit einer Ablegeeinrichtung zur Ablage der Filamente zur Spinnvliesbahn, dadurch gekennzeichnet, dass die neben der Kühlkammer (2) angeordnete Luftzufuhrkabine (8) in zumindest zwei Kabinenabschnitte (8a, 8b) unterteilt ist, aus denen jeweils Prozessluft unterschiedlicher Temperatur zuführbar ist.System for the continuous production of a spunbonded nonwoven web from aerodynamically stretched filaments made of thermoplastic material with a spinnerette (1), a cooling chamber (2) into which process air for cooling the filaments can be introduced from an air supply cabin (8), a drawing unit (4) with a pulling channel (5) and with a depositing device for depositing the filaments to the spunbonded nonwoven web, characterized in that the air supply cabin (8) arranged next to the cooling chamber (2) is divided into at least two cabin sections (8a, 8b), from each of which process air of different temperatures can be supplied , Anlage nach Anspruch 1, dadurch gekennzeichnet, dass aus einem ersten Kabinenabschnitt (8a) Prozessluft mit einer Temperatur zwischen 15 °C und 75 °C, vorzugsweise zwischen 18 °C und 70 °C zuführbar ist und dass aus einem zweiten Kabinenabschnitt (8b) Prozessluft mit einer Temperatur zwischen 15 °C und 38 °C, vorzugsweise zwischen 18 °C und 35 °C zuführbar ist.System according to claim 1, characterized in that process air with a temperature between 15 ° C and 75 ° C, preferably between 18 ° C and 70 ° C can be supplied from a first cabin section (8a) and that process air from a second cabin section (8b) can be supplied at a temperature between 15 ° C and 38 ° C, preferably between 18 ° C and 35 ° C. Anlage nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass der gegenseitige Abstand der Düsenbohrungen (9) der Spinnerette (1) in der Mitte der Spinnerette (1) größer ist als in den Außenbereichen.Installation according to one of claims 1 or 2, characterized in that the mutual distance between the nozzle bores (9) of the spinnerette (1) in the center of the spinnerette (1) is greater than in the outer areas. Anlage nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass zwischen der Spinnerette (1) und der Luftzufuhrkabine (8) eine Monomerabsaugungsvorrichtung (27) zur Absaugung von beim Spinnprozess entstehenden Gasen vorgesehen ist.Plant according to one of claims 1 to 3, characterized in that between the spinnerette (1) and the air supply cabin (8) a monomer extraction device (27) is provided for the extraction of gases formed during the spinning process. Anlage nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass zwischen der Kühlkammer (2) und der Verstreckeinheit (4) ein Zwischenkanal (3) angeordnet ist, welcher Zwischenkanal (3) vom Austritt der Kühlkammer (2) zum Eintritt des Unterziehkanals (5) der Verstreckeinheit (4) im Vertikalschnitt keilförmig zusammenläuft und dass unterschiedliche Steigungswinkel des Zwischenkanals (3) einstellbar sind.System according to one of claims 1 to 4, characterized in that an intermediate channel (3) is arranged between the cooling chamber (2) and the stretching unit (4), which intermediate channel (3) from the outlet of the cooling chamber (2) to the entry of the pulling channel ( 5) of the stretching unit (4) converges in a wedge shape in vertical section and that different pitch angles of the intermediate channel (3) can be set. Anlage nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass an die Verstreckeinheit (4) eine Verlegeeinheit (6) mit zumindest einem Diffusor (13, 14) anschließt.System according to one of Claims 1 to 5, characterized in that a laying unit (6) with at least one diffuser (13, 14) connects to the stretching unit (4). Anlage nach Anspruch 6, dadurch gekennzeichnet, dass die Verlegeeinheit (6) aus einem ersten Diffusor (13) und einem daran anschließenden zweiten Diffusor (14) besteht und dass zwischen dem ersten Diffusor (13) und dem zweiten Diffusor (14) ein Umgebungslufteintrittsspalt (15) vorgesehen ist.Installation according to claim 6, characterized in that the laying unit (6) consists of a first diffuser (13) and an adjoining second diffuser (14) and that between the first diffuser (13) and the second diffuser (14) there is an ambient air inlet gap ( 15) is provided. Anlage nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Ablegeeinrichtung ein kontinuierlich bewegtes Ablegesiebband (7) für die Spinnvliesbahn aufweist und zumindest eine unter dem Ablegesiebband (7) vorgesehene Saugeinrichtung. Installation according to one of claims 1 to 7, characterized in that the depositing device has a continuously moving deposit screen belt (7) for the spunbonded nonwoven web and at least one suction device provided under the deposit screen belt (7). Anlage nach Anspruch 8, dadurch gekennzeichnet, dass in Bewegungsrichtung des Ablegesiebbandes (7) zumindest drei voneinander getrennte Absaugbereiche hintereinander angeordnet sind, wobei ein Hauptabsaugbereich (19) im Ablagebereich der Spinnvliesbahn angeordnet ist, wobei ein erster Absaugbereich (18) vor dem Ablagebereich und wobei ein zweiter Absaugbereich (20) hinter dem Ablagebereich angeordnet ist.Installation according to claim 8, characterized in that at least three separate suction areas are arranged one behind the other in the direction of movement of the deposit screen belt (7), a main suction area (19) being arranged in the deposit area of the spunbonded nonwoven web, a first suction area (18) in front of the deposit area and wherein a second suction area (20) is arranged behind the storage area. Anlage nach Anspruch 9, dadurch gekennzeichnet, dass die Saugleistung des Hauptabsaugbereiches (19) unabhängig von der Saugleistung in dem ersten Absaugbereich (18) und in dem zweiten Absaugbereich (20) einstellbar ist.System according to Claim 9, characterized in that the suction power of the main suction area (19) can be set independently of the suction power in the first suction area (18) and in the second suction area (20).
EP02004615A 2002-02-28 2002-02-28 Apparatus for the continuous production of a spunbonded web Expired - Lifetime EP1340843B1 (en)

Priority Applications (20)

Application Number Priority Date Filing Date Title
DK02004615T DK1340843T3 (en) 2002-02-28 2002-02-28 Plant for continuous fabrication of a spun felt web
TR2003/02088T TR200302088T3 (en) 2002-02-28 2002-02-28 Plant for continuous production of a woven wool line
EP02004615A EP1340843B1 (en) 2002-02-28 2002-02-28 Apparatus for the continuous production of a spunbonded web
ES02004615T ES2207428T3 (en) 2002-02-28 2002-02-28 INSTALLATION FOR THE CONTINUOUS MANUFACTURE OF A SPINNING HAND BAND.
DE50211394T DE50211394D1 (en) 2002-02-28 2002-02-28 Plant for the continuous production of a spunbonded web
AT02004615T ATE381630T1 (en) 2002-02-28 2002-02-28 SYSTEM FOR THE CONTINUOUS PRODUCTION OF A SPUNNOVED WEB
SI200230653T SI1340843T1 (en) 2002-02-28 2002-02-28 Apparatus for the continuous production of a spunbonded web
CNB021217890A CN100366810C (en) 2002-02-28 2002-05-31 Equipment for continuously producing non-woven fabric web
ARP030100611A AR038608A1 (en) 2002-02-28 2003-02-25 SYSTEM FOR THE CONTINUOUS MANUFACTURE OF A NON-WOVEN FABRIC NAPA
MXPA03001723A MXPA03001723A (en) 2002-02-28 2003-02-26 Arrangement for the continuous production of a filament nonwoven fibrous web.
IL154631A IL154631A (en) 2002-02-28 2003-02-26 Arrangement for the continuous production of a filament nonwoven fibrous web
JP2003050834A JP3704522B2 (en) 2002-02-28 2003-02-27 Equipment for continuous production of nonwoven fiber webs
CA002420520A CA2420520C (en) 2002-02-28 2003-02-27 Arrangement for the continuous production of a filament nonwoven fibrous web
CZ2003-581A CZ305424B6 (en) 2002-02-28 2003-02-27 Arrangement for the continuous production of a non-woven fibrous web
KR1020030012229A KR100920436B1 (en) 2002-02-28 2003-02-27 Arrangement for the continuous production of a filament non-woven fibrous web
BRPI0300508-9A BR0300508B1 (en) 2002-02-28 2003-02-27 installation for the continuous production of non-woven fibrous filament fabric.
RU2003105789/12A RU2260083C2 (en) 2002-02-28 2003-02-27 Apparatus for continuous manufacture of nonwoven fibrous fabric from threads
MYPI20030688A MY135631A (en) 2002-02-28 2003-02-27 Arrangement for the continuous production of a filament nonwoven fibrous web
PL358929A PL206768B1 (en) 2002-02-28 2003-02-27 System for continuous manufacture of non-woven fibrous yarn
US10/375,892 US6918750B2 (en) 2002-02-28 2003-02-27 Arrangement for the continuous production of a filament nonwoven fibrous web

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EP02004615A EP1340843B1 (en) 2002-02-28 2002-02-28 Apparatus for the continuous production of a spunbonded web

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EP1340843A1 true EP1340843A1 (en) 2003-09-03
EP1340843B1 EP1340843B1 (en) 2007-12-19

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US (1) US6918750B2 (en)
EP (1) EP1340843B1 (en)
JP (1) JP3704522B2 (en)
KR (1) KR100920436B1 (en)
CN (1) CN100366810C (en)
AR (1) AR038608A1 (en)
AT (1) ATE381630T1 (en)
BR (1) BR0300508B1 (en)
CA (1) CA2420520C (en)
CZ (1) CZ305424B6 (en)
DE (1) DE50211394D1 (en)
DK (1) DK1340843T3 (en)
ES (1) ES2207428T3 (en)
IL (1) IL154631A (en)
MX (1) MXPA03001723A (en)
MY (1) MY135631A (en)
PL (1) PL206768B1 (en)
RU (1) RU2260083C2 (en)
SI (1) SI1340843T1 (en)
TR (1) TR200302088T3 (en)

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WO2022108973A1 (en) 2020-11-23 2022-05-27 Exxonmobil Chemical Patents Inc. Metallocene polypropylene prepared using aromatic solvent-free supports

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PL206768B1 (en) 2010-09-30
IL154631A (en) 2008-04-13
CA2420520A1 (en) 2003-08-28
BR0300508A (en) 2004-08-10
CA2420520C (en) 2007-01-23
DK1340843T3 (en) 2008-05-05
MXPA03001723A (en) 2004-12-07
BR0300508B1 (en) 2012-12-11
KR100920436B1 (en) 2009-10-08
CN100366810C (en) 2008-02-06
CZ305424B6 (en) 2015-09-16
KR20030071543A (en) 2003-09-03
EP1340843B1 (en) 2007-12-19
JP3704522B2 (en) 2005-10-12
ES2207428T1 (en) 2004-06-01
CZ2003581A3 (en) 2003-10-15
US20030178742A1 (en) 2003-09-25
ATE381630T1 (en) 2008-01-15
MY135631A (en) 2008-05-30
US6918750B2 (en) 2005-07-19
PL358929A1 (en) 2003-09-08
TR200302088T3 (en) 2004-01-21
ES2207428T3 (en) 2008-04-16
AR038608A1 (en) 2005-01-19
JP2004003080A (en) 2004-01-08
RU2260083C2 (en) 2005-09-10
CN1441104A (en) 2003-09-10
IL154631A0 (en) 2003-09-17
SI1340843T1 (en) 2008-04-30
DE50211394D1 (en) 2008-01-31

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