EP3495543A1 - System and method for creating a spunbonded fabric - Google Patents
System and method for creating a spunbonded fabric Download PDFInfo
- Publication number
- EP3495543A1 EP3495543A1 EP18201508.1A EP18201508A EP3495543A1 EP 3495543 A1 EP3495543 A1 EP 3495543A1 EP 18201508 A EP18201508 A EP 18201508A EP 3495543 A1 EP3495543 A1 EP 3495543A1
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- EP
- European Patent Office
- Prior art keywords
- belt
- roller
- storage
- filaments
- storage belt
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000004744 fabric Substances 0.000 title claims abstract description 12
- 238000003860 storage Methods 0.000 claims abstract description 104
- 238000000151 deposition Methods 0.000 claims abstract description 41
- 230000032258 transport Effects 0.000 claims abstract description 24
- 230000008021 deposition Effects 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 239000004745 nonwoven fabric Substances 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims 11
- 230000008569 process Effects 0.000 abstract description 5
- 238000007711 solidification Methods 0.000 description 11
- 230000008023 solidification Effects 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000005056 compaction Methods 0.000 description 5
- 238000007596 consolidation process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000007665 sagging Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000003490 calendering Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000012815 thermoplastic material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Images
Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
- D04H3/11—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by fluid jet
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
Definitions
- the present invention relates to a system and a method for producing a spunbonded fabric of endless filaments, which consist for example of thermoplastic material. Endless filaments differ because of their quasi-endless length of staple fibers, which have much smaller lengths of, for example, 10 to 60 mm.
- nonwoven web which is typically produced by depositing the filaments on a storage belt.
- the tray is usually solidified by means of a thermal calender. This results in nonwovens with good strength and small thickness. Heavier or more voluminous Filamentablagen are more difficult to solidify, since the energy input is limited in the middle of the product in the time available and in particular for heating up to the vicinity of the melting point of the plastic is no longer sufficient. If heavier or more voluminous nonwovens are to be produced, other solidification processes are expedient, in particular mechanical needling and hydraulic needling or thermobonding (preferably by means of hot air).
- the EP 1408148B2 shows a spunbonding machine, in which the endless filaments are deposited by a spinning tower on a first storage belt. Immediately behind the filing of the endless filaments suction boxes are arranged under the first storage belt, which hold the endless filaments on the first storage belt. A first consolidation takes place by means of heated calender rolls. By means of an evacuated roll, the endless filaments are transferred to a second deposition belt, on which the solidification takes place by means of water jets. At very high transport speeds of the spunbonded fabric of more than 250 m / min, the calender rolls can not transfer sufficient energy into the endless filaments for preconsolidation, since the residence time in the contact area of the rolls is too low. Another disadvantage is the transfer of the filaments from the first to the second storage belt by means of suction roll, as at high speeds undesirable distortions can occur.
- a disadvantage of this prior art is the low operating speed of the system, since in particular the introduction of heat by calender in the continuous filaments requires a predetermined energy density. With a higher working / transport speed of the continuous filaments, the calenders would have to be heated far above the melting point of the thermoplastic material in order to transfer the energy in the shorter contact time between the rollers. Any smallest disturbance or irregularity at this location would result in undesirable sticking of the continuous filaments, whereby the subsequent hydroentangling would at least partially not achieve the desired effect. In other words, the hydroentanglement would have to be significantly oversized in order to uniformly solidify and structure the nonwoven, which would already be pre-consolidated in places by means of bonding points.
- Another disadvantage is the introduction of water for pre-moistening, which must be removed from the web in a further complex process step.
- the object of the invention is the development of a system and a method for producing a spunbonded nonwoven filaments at high speeds.
- the invention relates to a plant for producing a spunbonded web, comprising a spinnerette with a diffuser for the production of continuous filaments, with a first depositing belt, which is adapted to transport the endless filaments and transfer to a subsequent second depositing belt, wherein at the second Ablageband at least one means for hydroentanglement of the continuous filaments is arranged to a spunbonded, wherein the spunbond is subsequently solidified and / or structured by means of at least one further hydroentanglement.
- the invention is characterized in that the first storage belt transports the continuous filaments dry and unconsolidated, wherein a roller is arranged at the end of the first storage belt or at the beginning of the second storage belt, so that the endless filaments are guided around the roller with a small angle of wrap.
- the endless filaments Due to the high transport speed of the endless filaments, in contrast to the prior art, no solidification, compaction or calendering of the continuous filaments takes place on the first deposition belt.
- the endless filaments are thus transported unconsolidated and dry at a high speed of at least 250 m / min on the first storage belt.
- the system dries the continuous filaments dry on the first storage belt, ie that the endless filaments are not sprayed or treated with water or another liquid, which can be troublesome for the further treatment or can reduce the Auflagereibung the continuous filaments on the first conveyor belt.
- a low frictional force is generated on the endless filaments by means of a roller, by wrapping the roller around a small angle.
- the angle can be up to 45 ° and is generated by immersing the roller with little force in one of the depositing belts. Because the depositing belts yield elastically, the endless filaments are guided around the roller with a small wrap angle, so that an increased friction occurs between the endless filaments and the roller. which withstands a limited tensile load. So much tension can be built up that the endless filaments can be guided over the gusset between the storage belts without sagging.
- the continuous filaments will be transported on the storage belts at a speed of at least 250 m / min.
- Very light spunbonded nonwovens can be produced at high speed.
- the roller is permeable to air and besaugbar.
- the entrained air entrained at these high speeds can be extracted.
- the storage belts can be operated at the same speed, or alternatively, the second storage belt can be operated at a slightly higher speed.
- the roller when the roller is arranged at the beginning of the second storage belt, the roller must be drivable and operated at a slightly higher peripheral speed than the transport speed of the second storage belt.
- the decisive factor is a slight pull or a wrap around on the Apply endless filaments, so that they can overcome the gusset between the storage belts without significant slack.
- the continuous filaments can be treated with a positive or negative delay.
- the wrapping angle of the endless filaments can be adjusted around the roller.
- the system is designed to accommodate a further component between the storage belts, so that, for example, a carded nonwoven fabric can be introduced in order to be connected together on the second storage belt with the endless filaments.
- the process for producing a spunbonded fabric provides to produce continuous filaments in a spinnerette with a diffuser and to deposit on a first storage belt, the first storage belt transports the endless filaments to a second storage belt and passes to this, wherein the continuous filaments on the second storage belt to a spunbonded fabric solidify by means of hydroentanglement and subsequently solidify by means of at least one further hydroentanglement and / or structure.
- the inventive method is characterized in that the endless filaments are transported dry and unconsolidated on the first storage belt, wherein the endless filaments at least partially wrap around a roller which is arranged at the end of the first storage belt or at the beginning of the second storage belt to the To reduce sag of Endlosfil noir in the gusset between the first and the second storage belt.
- the creation of a terminal point facilitates the transition from the first to the second filing belt. Therefore, the detachment of the continuous filaments from the depositing belt at the transition to the depositing belt is promoted by the creation of a clamping point by means of the roller. The replacement of the spunbonded from the storage belt to the suction drum is facilitated by the generation of the terminal point by means of the roller.
- the transport speed of the continuous filaments is at least 250 m / min, preferably at least 400 m / min.
- the plant is suitable for light spunbonded nonwovens with a basis weight of 60 g / m 2 .
- the lighter the spunbond, the higher the transport speed may be, for example, at a basis weight of 15 g / m 2 from 250 m / min to 1000 m / min.
- FIG. 1 shows in a first embodiment according to the invention a plant 1 for producing a spunbonded fabric, in which a spinnerette with diffuser 2 produces endless filaments 3 and deposits them on a first depositing belt 4.
- the storage belt 4 is formed as an endless circulating belt that is guided by at least two, in this embodiment by four deflection rollers 4a, 4b, 4c, 4d, and driven by at least one deflection roller.
- a first sow box 5 is arranged below the storage belt 4, which is assigned to the spinnerette.
- a further sowing box 6 with which the continuous filaments 3 are held on the storage belt 4 by means of induced draft.
- the storage belt 4 on a plurality of perforations can be sucked through the air in sufficient quantity.
- the system 1 drives the endless filaments 3 dry on the first storage belt 4, ie that the endless filaments 3 are not sprayed or treated with water or another liquid.
- no solidification, compaction or calendering of the endless filaments 3 takes place on the first storage belt 4.
- the endless filaments 3 are thus unconsolidated and dry at a high speed of at least 250 m / min, preferably at least 400 m / min, transported on the first storage belt 4.
- the first storage belt 4 is followed in the transport direction by a second storage belt 7, on which the subsequent solidification of the endless filaments 3 to form a spunbonded web 11 takes place.
- the second storage belt 7 is also formed as an endless circulating belt that is guided by at least two, in this embodiment by four deflection rollers 7a, 7b, 7c, 7d and driven by at least one deflection roller.
- the storage belt 7 is also formed as a perforated air or water-permeable belt. At the transfer point between the first and the second storage belt 4, 7, the distance between the storage belts 4, 7 is minimized so that an evacuated transfer is not required. Due to the high transport speed of the endless filaments 3, the sag of the endless filaments 3 in the gusset between the deflection rollers 4b and 7a is very small.
- a roller 8 is arranged in the region of the deflection roller 7a above the depositing belt 7 and exerts a limited pressure on the endless filaments 3. In contrast to a calender, the roller 8 is moved to the storage belt 7 on gap. Characterized in that the storage belt 7 yields elastically, the endless filaments 3 are guided around the roller 8 with a small angle of wrap, so that an increased friction between the continuous filaments 3 and the roller 8 occurs, which withstands a limited tensile load.
- the storage belt 7 with a slightly higher Speed is operated as the storage belt 4.
- the speed difference can be up to 0.5%.
- the roller 8 may be air-permeable or have a smooth closed jacket.
- the roller 8 may also have a textured surface to increase friction with the continuous filaments 3.
- the roller 8 may be co-rotating or driven.
- the roller 8 can be arranged to provide pressure the deflecting roller 7a or with the depositing belt 7 on the endless filaments 3 exerts and this easily (with defined gap) clamped. If the roller 8 is driven, it is possible to set a delay of, for example, 2-5% of the continuous endless filaments 3 with the depositing belt 7 or the deflection roller 7a.
- the roller 8 At the high transport speed of the endless filaments 3, it may be advantageous to form the roller 8 as an air-permeable roller and to suck, since this unwanted entrained air currents can be derived. If both storage belts 4, 7 operated at an identical speed, the roller 8 can be operated at a slightly higher speed than the storage belt 7. The peripheral speed can be up to 0.5% greater than the transport speed of the storage belt 7. Thus the endless filaments 3 are pushed onto the depositing belt 7, so that the sag of the endless filaments 3 in the interstice between the depositing belts 4, 7 is reduced.
- a first solidification of the continuous filaments into a nonwoven fabric 11 After the transfer of the endless filaments 3 to the second storage belt 7 takes place by means of a nozzle beam 9, a first solidification of the continuous filaments into a nonwoven fabric 11.
- the nozzle beam can be operated with a low pressure of for example 10 - 40 bar, only to achieve a pre-consolidation.
- a suction box 10 is arranged below the storage belt 7, with which the water of the nozzle beam 9 is sucked through the storage belt 7.
- the solidification effected by the first nozzle bar 9 can advantageously be very light, so that structuring can take place simultaneously on the following suction drum. If there is no subsequent structuring, the nozzle bar 9 can also be operated at a higher pressure of, for example, 40-400 bar.
- the nonwoven fabric 11 is conveyed around a first suction drum 12, which is arranged above the storage belt 7.
- At least one further nozzle bar 13 acts on the fleece 11 at a high pressure of 40-400 bar in order to give the fleece 11 sufficient strength and optionally a structuring.
- the structuring is generally carried out by means of a patterning of the suction drum 12, via which a shell with a formative pattern can be drawn up.
- a circulation of about 180 ° about the first suction drum 12 another circulation takes place about a second suction drum 14, on which at least one further nozzle bar 15 also solidifies the nonwoven with a high pressure of 40-400 bar and, if appropriate, restructures it again.
- a further treatment of the web 11 in a subsequent system for dissection, drying and / or winding is no longer shown in this view, but belongs to the entire system concept.
- FIG. 2 differs from the previous embodiment only in three points: the roller 8 can be arranged horizontally movable by means of sliding strips. Since the storage belt 7 is vertically yielding after the deflection roller 7a due to its elongation, by a horizontal process of the roller 8 of the guide roller 7a in the direction of suction box 10, the gap between storage belt 7 and roller 8 are varied, which the wrap angle of the endless filaments 3 to the Roller 8 changes and thus the connected friction force.
- a further nozzle bar 16 is arranged below the suction drum 12 and below the depositing belt 7 in order to achieve a first compaction by the depositing belt 7 and, if necessary, to assist a detachment of the preconsolidated nonwoven 11 from the depositing belt 7.
- a further improvement of the system 1 can be achieved by at least one deflection roller, in this example the deflection roller 7a, being displaceably arranged in order to reduce the tension on the deposition belt 7 and thus simplify the exchange of the deposition belts.
- both storage belts 4, 7 can be operated at an identical speed.
- the roller 8 must be operated at a slightly higher peripheral speed than the storage belt 7.
- the peripheral speed can be up to 0.5% greater than the transport speed of the storage belt 7.
- the endless filaments 3 are pushed onto the storage belt 7, so that the sag of the endless filaments 3 in the gusset between the storage belts 4, 7 is reduced.
- a stretching of the endless filaments 3 can take place when the roller 8 is operated at a greater speed of 2-5%.
- the roller 8 can be configured as a non-driven revolving roller 8. Alternatively, it may also be driven to act on the continuous filaments 3 with a positive or negative draft of 2-3%.
- the roller 8 is arranged in the end region of the storage belt 4, if possible so that the roller cooperates with the deflection roller 4b.
- the roller 8 with the storage belt 4 a gap, whereby a frictional force acts on the continuous filaments 3 due to a small wrap angle, so that in connection with the wrapping of the endless filaments 3 around the suction drums 12, 14 a slight tensile stress acts on the continuous filaments 3, so that they are not in sag the gusset between the storage belts 4 and 7.
- the roller 8 may be formed here as an air-permeable and evacuated roller to remove the drag air from the plant.
- the storage belt 7 has been modified and a further deflection roller 7e inserted to create space in the region of the gusset for a further application, for example, a winding 17 for a carded web to combine with the continuous filaments on the second storage belt 7.
- the deflection roller 7a is arranged at least horizontally displaceable here as well.
- the speed of the storage belts 4 and 7 may be identical in this embodiment, or the speed of the storage belt 7 may be slightly above the speed of the storage belt 4.
- the train on the endless filaments 3 is generated either by the wrapping and thus friction with the roller 8, or by the higher speed of the storage belt 7.
- the roller can not be driven and running running.
- the roller 8 may be driven to set a positive or negative bias of 2-5% with the deposition belt 4 so that either the roller 8 is driven faster or slower.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Die vorliegende Erfindung betrifft eine Anlage (1) und ein Verfahren zur Herstellung eines Spinnvlieses, umfassend eine Spinnerette mit einem Diffusor (2) zur Herstellung von Endlosfilamenten (3), mit einem ersten Ablageband (4), das ausgebildet ist, die Endlosfilamente (3) zu transportieren und an ein nachfolgendes zweites Ablageband (7) zu übergeben, wobei an dem zweiten Ablageband (7) mindestens eine Einrichtung zur Wasserstrahlverfestigung der Endlosfilamente (3) zu einem Spinnvlies (11) angeordnet ist, wobei das Spinnvlies (11) nachfolgend mittels mindestens einer weiteren Wasserstrahlverfestigung verfestigt und/oder strukturiert wird.Die Erfindung ist dadurch gekennzeichnet, dass das erste Ablageband (4) die Endlosfilamente (3) trocken und unverfestigt transportiert, wobei eine Walze (8) an dem Ende des ersten Ablagebandes (4) oder an dem Anfang des zweiten Ablagebandes (7) angeordnet ist, so dass die Endlosfilamente mit einem kleinen Umschlingungswinkel um die Walze (8) geführt werden.The present invention relates to a plant (1) and a process for the production of a spunbonded nonwoven comprising a spinnerette with a diffuser (2) for producing continuous filaments (3), comprising a first deposition belt (4), which is formed, the endless filaments (3 ) and to transfer to a subsequent second storage belt (7), wherein at least one means for hydroentanglement of the continuous filaments (3) to a spunbonded fabric (11) is arranged on the second storage belt (7), wherein the spunbonded fabric (11) subsequently by means of The invention is characterized in that the first storage belt (4) transports the continuous filaments (3) dry and unconsolidated, wherein a roller (8) at the end of the first storage belt (4) or is arranged at the beginning of the second storage belt (7), so that the endless filaments with a small angle of wrap around the roller (8) guided become T.
Description
Die vorliegende Erfindung betrifft eine Anlage und ein Verfahren zur Herstellung eines Spinnvlieses aus endlosen Filamenten, die beispielsweise aus thermoplastischem Kunststoff bestehen. Endlosfilamente unterscheiden sich aufgrund ihrer quasi endlosen Länge von Stapelfasern, die wesentlich geringere Längen von beispielsweise 10 bis 60 mm aufweisen.The present invention relates to a system and a method for producing a spunbonded fabric of endless filaments, which consist for example of thermoplastic material. Endless filaments differ because of their quasi-endless length of staple fibers, which have much smaller lengths of, for example, 10 to 60 mm.
Aus der Praxis ist es hinlänglich bekannt, eine Vliesbahn, die typischerweise durch Ablage der Filamente auf einem Ablageband erzeugt wird, zu verfestigen. Für Vliese mit Flächengewichten von 10 bis 80 g/m2 wird die Ablage in der Regel mittels eines Thermokalanders verfestigt. Dadurch entstehen Vliese mit guter Festigkeit und geringer Dicke. Schwerere bzw. voluminösere Filamentablagen sind schwieriger zu verfestigen, da der Energieeintrag in die Mitte des Produktes in der zur Verfügung stehenden Zeit begrenzt ist und insbesondere für das Erwärmen bis in die Nähe des Schmelzpunktes des Kunststoffes nicht mehr ausreicht. Wenn schwerere bzw. voluminösere Vliese hergestellt werden sollen, sind andere Verfestigungsverfahren zweckmäßig und zwar insbesondere mechanisches Vernadeln und hydraulisches Vernadeln oder Thermoverfestigen (vorzugsweise mittels Heißluft). Im Zusammenhang mit diesen Verfestigungsverfahren ist es immer erforderlich, die Vliesbahn vom Ablageband bzw. Siebband abzulösen und möglichst ohne Beeinträchtigung der Vliesbahn bzw. ohne Beeinträchtigung der Gleichmäßigkeit der Vliesbahn der Verfestigung/Endverfestigung zuzuführen.From practice, it is well known to solidify a nonwoven web, which is typically produced by depositing the filaments on a storage belt. For webs with basis weights of 10 to 80 g / m 2 , the tray is usually solidified by means of a thermal calender. This results in nonwovens with good strength and small thickness. Heavier or more voluminous Filamentablagen are more difficult to solidify, since the energy input is limited in the middle of the product in the time available and in particular for heating up to the vicinity of the melting point of the plastic is no longer sufficient. If heavier or more voluminous nonwovens are to be produced, other solidification processes are expedient, in particular mechanical needling and hydraulic needling or thermobonding (preferably by means of hot air). In connection with these solidification processes, it is always necessary to detach the nonwoven web from the delivery belt or screen belt and, if possible, to supply the solidification / final solidification without impairing the nonwoven web or without impairing the uniformity of the nonwoven web.
Die
Aus der
Nachteilig an diesem Stand der Technik ist die geringe Arbeitsgeschwindigkeit der Anlage, da insbesondere die Einbringung von Wärme mittels Kalander in die Endlosfilamente eine vorbestimmte Energiedichte erfordert. Bei einer höheren Arbeits-/Transportgeschwindigkeit der Endlosfilamente müssten die Kalander weit über den Schmelzpunkt des thermoplastischen Kunststoffes erhitzt werden, um in der geringeren Kontaktzeit zwischen den Walzen die Energie zu übertragen. Jede kleinste Störung oder Unregelmäßigkeit an dieser Stelle hätte ein unerwünschtes Verkleben der Endlosfilamente zur Folge, wodurch die nachfolgende Wasserstrahlverfestigung zumindest teilweise nicht den gewünschten Effekt erzielen würde. Oder anders ausgedrückt, die Wasserstrahlverfestigung müsste deutlich überdimensioniert werden, um das Vlies, das bei Störungen bereits mittels Bonding-Punkten stellenweise vorverfestigt wäre, gleichmäßig zu verfestigen und zu strukturieren. Ein weiterer Nachteil ist die Einbringung von Wasser zur Vorbefeuchtung, das in einem weiteren aufwändigen Prozessschritt aus dem Vlies entfernt werden muss.A disadvantage of this prior art is the low operating speed of the system, since in particular the introduction of heat by calender in the continuous filaments requires a predetermined energy density. With a higher working / transport speed of the continuous filaments, the calenders would have to be heated far above the melting point of the thermoplastic material in order to transfer the energy in the shorter contact time between the rollers. Any smallest disturbance or irregularity at this location would result in undesirable sticking of the continuous filaments, whereby the subsequent hydroentangling would at least partially not achieve the desired effect. In other words, the hydroentanglement would have to be significantly oversized in order to uniformly solidify and structure the nonwoven, which would already be pre-consolidated in places by means of bonding points. Another disadvantage is the introduction of water for pre-moistening, which must be removed from the web in a further complex process step.
Aufgabe der Erfindung ist die Weiterbildung einer Anlage und eines Verfahrens zur Herstellung eines Spinnvlieses aus Endlosfilamenten bei hohen Geschwindigkeiten.The object of the invention is the development of a system and a method for producing a spunbonded nonwoven filaments at high speeds.
Diese Aufgabe wird ausgehend von einer Anlage und einem Verfahren gemäß dem Oberbegriff der Ansprüche 1 und 13 in Verbindung mit den kennzeichnenden Merkmalen gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen angegeben.This object is achieved on the basis of a system and a method according to the preamble of
Nach Anspruch 1 betrifft die Erfindung eine Anlage zur Herstellung eines Spinnvlieses, umfassend eine Spinnerette mit einem Diffusor zur Herstellung von Endlosfilamenten, mit einem ersten Ablageband, das ausgebildet ist, die Endlosfilamente zu transportieren und an ein nachfolgendes zweites Ablageband zu übergeben, wobei an dem zweiten Ablageband mindestens eine Einrichtung zur Wasserstrahlverfestigung der Endlosfilamente zu einem Spinnvlies angeordnet ist, wobei das Spinnvlies nachfolgend mittels mindestens einer weiteren Wasserstrahlverfestigung verfestigt und/oder strukturiert wird.According to
Die Erfindung ist dadurch gekennzeichnet, dass das erste Ablageband die Endlosfilamente trocken und unverfestigt transportiert, wobei eine Walze an dem Ende des ersten Ablagebandes oder an dem Anfang des zweiten Ablagebandes angeordnet ist, so dass die Endlosfilamente mit einem kleinen Umschlingungswinkel um die Walze geführt werden.The invention is characterized in that the first storage belt transports the continuous filaments dry and unconsolidated, wherein a roller is arranged at the end of the first storage belt or at the beginning of the second storage belt, so that the endless filaments are guided around the roller with a small angle of wrap.
Aufgrund der hohen Transportgeschwindigkeit der Endlosfilamente erfolgt im Gegensatz zum Stand der Technik auf dem ersten Ablageband keinerlei Verfestigung, Kompaktierung oder Kalandrierung der Endlosfilamente. Die Endlosfilamente werden damit unverfestigt und trocken mit einer hohen Geschwindigkeit von mindestens 250 m/min auf dem ersten Ablageband transportiert. Die Anlage fährt die Endlosfilamente auf dem ersten Ablageband trocken, d.h., dass die Endlosfilamente nicht mit Wasser oder einer anderen Flüssigkeit besprüht oder behandelt werden, was für die weitere Behandlung störend sein kann oder die Auflagereibung der Endlosfilamente auf dem ersten Transportband reduzieren kann. Damit der Zwickel zwischen den beiden Ablagebändern ohne Saugzug durch die Endlosfilamente überfahren werden kann, ohne dass die Endlosfilamente hier durchhängen, wird mittels einer Walze eine geringe Reibkraft auf die Endlosfilamente erzeugt, indem diese die Walze um einen kleinen Winkel umschlingen. Der Winkel kann bis zu 45° betragen und wird erzeugt, in dem die Walze mit geringer Kraft in eines der Ablagebänder eintaucht. Dadurch, dass die Ablagebänder elastisch nachgeben, werden die Endlosfilamente mit einem kleinen Umschlingungswinkel um die Walze geführt, so dass eine verstärkte Reibung zwischen den Endlosfilamenten und der Walze auftritt, die einer begrenzten Zugbelastung standhält. Damit kann so viel Spannung aufgebaut werden, dass die Endlosfilamente über den Zwickel zwischen den Ablagebändern geführt werden können, ohne dass diese durchhängen. Gleichzeitig wird ein Verdichten bzw. Kompaktieren der Endlosfilamente vermieden, so dass nachfolgend eine Vorverfestigung mittels Wasserstrahlverfestigung mit geringem Druck möglich ist. Die trockene Fahrweise der Endlosfilamente auf dem Ablageband verstärkt die Adhäsion zwischen den Endlosfilamenten und dem Ablageband, was zu einem verkleben neigt. Daher wird die Ablösung der Endlosfilamente vom Ablageband beim Übergang auf das Ablageband durch die Erzeugung eines Klemmpunktes mittels der Walze begünstigt. Auch die Ablösung des Spinnvlieses vom Ablageband um die Saugtrommel wird durch die Erzeugung des Klemmpunktes mittels der Walze erleichtert.Due to the high transport speed of the endless filaments, in contrast to the prior art, no solidification, compaction or calendering of the continuous filaments takes place on the first deposition belt. The endless filaments are thus transported unconsolidated and dry at a high speed of at least 250 m / min on the first storage belt. The system dries the continuous filaments dry on the first storage belt, ie that the endless filaments are not sprayed or treated with water or another liquid, which can be troublesome for the further treatment or can reduce the Auflagereibung the continuous filaments on the first conveyor belt. So that the gusset between the two storage belts can be run over by the endless filaments without induced draft, without the endless filaments sagging here, a low frictional force is generated on the endless filaments by means of a roller, by wrapping the roller around a small angle. The angle can be up to 45 ° and is generated by immersing the roller with little force in one of the depositing belts. Because the depositing belts yield elastically, the endless filaments are guided around the roller with a small wrap angle, so that an increased friction occurs between the endless filaments and the roller. which withstands a limited tensile load. So much tension can be built up that the endless filaments can be guided over the gusset between the storage belts without sagging. At the same time, compaction or compacting of the continuous filaments is avoided, so that subsequently a pre-consolidation by means of hydroentanglement with low pressure is possible. The dry operation of the continuous filaments on the storage belt enhances the adhesion between the continuous filaments and the deposit belt, which tends to stick together. Therefore, the detachment of the continuous filaments from the depositing belt at the transition to the depositing belt is promoted by the creation of a clamping point by means of the roller. The replacement of the spunbonded from the storage belt to the suction drum is facilitated by the generation of the terminal point by means of the roller.
Vorzugsweise werden die Endlosfilamente auf den Ablagebändern mit einer Geschwindigkeit von mindestens 250 m/min transportieren. Es können mit hoher Geschwindigkeit sehr leichte Spinnvliese hergestellt werden.Preferably, the continuous filaments will be transported on the storage belts at a speed of at least 250 m / min. Very light spunbonded nonwovens can be produced at high speed.
In einer bevorzugten Ausführungsform ist die Walze luftdurchlässig ausgebildet und besaugbar. Damit kann die bei diesen hohen Geschwindigkeiten mitgeführte Schleppluft abgesaugt werden.In a preferred embodiment, the roller is permeable to air and besaugbar. Thus, the entrained air entrained at these high speeds can be extracted.
Die Ablagebänder können mit der gleichen Geschwindigkeit betrieben werden, oder alternativ kann das zweite Ablageband mit einer geringfügig höheren Geschwindigkeit betrieben werden. Im ersten Fall, wenn die Walze am Anfang des zweiten Ablagebandes angeordnet ist, muss die Walze antreibbar sein und mit einer geringfügig höheren Umfangsgeschwindigkeit betrieben werden, als die Transportgeschwindigkeit des zweiten Ablagebandes. Entscheidend ist, einen geringen Zug oder eine Umschlingungsreibung auf die Endlosfilamente aufzubringen, damit diese ohne nennenswerten Durchhang den Zwickel zwischen den Ablagebändern überwinden können.The storage belts can be operated at the same speed, or alternatively, the second storage belt can be operated at a slightly higher speed. In the first case, when the roller is arranged at the beginning of the second storage belt, the roller must be drivable and operated at a slightly higher peripheral speed than the transport speed of the second storage belt. The decisive factor is a slight pull or a wrap around on the Apply endless filaments, so that they can overcome the gusset between the storage belts without significant slack.
Dadurch, dass zwischen der Umfangsgeschwindigkeit der Walze und der Transportgeschwindigkeit der Ablagebänder eine Geschwindigkeitsdifferenz von bis zu 5 % einstellbar ist, können die Endlosfilamente mit einem positiven oder negativen Verzug behandelt werden.The fact that a speed difference of up to 5% can be set between the circumferential speed of the roller and the transport speed of the storage belts, the continuous filaments can be treated with a positive or negative delay.
Durch eine verschiebbare Anordnung der Walze horizontal bzw. parallel zu einem der Ablagebänder kann der Umschlingungswinkel der Endlosfilamente um die Walze eingestellt werden.By a displaceable arrangement of the roller horizontally or parallel to one of the storage belts, the wrapping angle of the endless filaments can be adjusted around the roller.
Vorzugsweise ist die Anlage ausgebildet, zwischen den Ablagebändern eine weitere Komponente aufzunehmen, so dass beispielsweise ein kardiertes Vlies eingeführt werden kann, um zusammen auf dem zweiten Ablageband mit den Endlosfilamenten verbunden zu werden.Preferably, the system is designed to accommodate a further component between the storage belts, so that, for example, a carded nonwoven fabric can be introduced in order to be connected together on the second storage belt with the endless filaments.
Das Verfahren zur Herstellung eines Spinnvlieses sieht vor, Endlosfilamenten in einer Spinnerette mit einem Diffusor herzustellen und auf einem ersten Ablageband abzulegen, wobei das erste Ablageband die Endlosfilamente zu einem zweiten Ablageband transportiert und an dieses übergibt, wobei die Endlosfilamente auf dem zweiten Ablageband zu einem Spinnvlies mittels Wasserstrahlverfestigung zu verfestigen und nachfolgend mittels mindestens einer weiteren Wasserstrahlverfestigung zu verfestigen und/oder zu strukturieren.The process for producing a spunbonded fabric provides to produce continuous filaments in a spinnerette with a diffuser and to deposit on a first storage belt, the first storage belt transports the endless filaments to a second storage belt and passes to this, wherein the continuous filaments on the second storage belt to a spunbonded fabric solidify by means of hydroentanglement and subsequently solidify by means of at least one further hydroentanglement and / or structure.
Das erfindungsgemäße Verfahren ist dadurch gekennzeichnet, dass die Endlosfilamente auf dem ersten Ablageband trocken und unverfestigt transportiert werden, wobei die Endlosfilamente zumindest teilweise eine Walze umschlingen, die an dem Ende des ersten Ablagebandes oder an dem Anfang des zweiten Ablagebandes angeordnet ist, um den Durchhang der Endlosfilamente im Zwickel zwischen dem ersten und dem zweiten Ablageband zu reduzieren.The inventive method is characterized in that the endless filaments are transported dry and unconsolidated on the first storage belt, wherein the endless filaments at least partially wrap around a roller which is arranged at the end of the first storage belt or at the beginning of the second storage belt to the To reduce sag of Endlosfilamente in the gusset between the first and the second storage belt.
Um die anhaftenden Endlosfilamente vom Ablageband zu lösen, wird durch die Erzeugung eines Klemmpunktes der Übergang vom ersten zum zweiten Ablageband erleichtert. Daher wird die Ablösung der Endlosfilamente vom Ablageband beim Übergang auf das Ablageband durch die Erzeugung eines Klemmpunktes mittels der Walze begünstigt. Auch die Ablösung des Spinnvlieses vom Ablageband um die Saugtrommel wird durch die Erzeugung des Klemmpunktes mittels der Walze erleichtert.In order to release the adhering filaments from the filing belt, the creation of a terminal point facilitates the transition from the first to the second filing belt. Therefore, the detachment of the continuous filaments from the depositing belt at the transition to the depositing belt is promoted by the creation of a clamping point by means of the roller. The replacement of the spunbonded from the storage belt to the suction drum is facilitated by the generation of the terminal point by means of the roller.
Vorzugsweise beträgt die Transportgeschwindigkeit der Endlosfilamente mindestens 250 m/min, vorzugsweise mindestens 400 m/min. Insbesondere für leichte Spinnvliese mit einem Flächengewicht von maximal 60 g/m2 ist die Anlage geeignet. Je leichter das Spinnvlies, umso höher kann die Transportgeschwindigkeit sein, beispielsweise bei einem Flächengewicht von 15 g/m2 von 250 m/min bis zu 1000 m/min.Preferably, the transport speed of the continuous filaments is at least 250 m / min, preferably at least 400 m / min. In particular, for light spunbonded nonwovens with a basis weight of 60 g / m 2 , the plant is suitable. The lighter the spunbond, the higher the transport speed may be, for example, at a basis weight of 15 g / m 2 from 250 m / min to 1000 m / min.
Weitere, die Erfindung verbessernde Maßnahmen werden nachstehend gemeinsam mit der Beschreibung eines bevorzugten Ausführungsbeispiels der Erfindung anhand der Figuren näher dargestellt. Es zeigen:
Figur 1- ein erstes Ausführungsbeispiel der Erfindung;
Figur 2- ein zweites Ausführungsbeispiel der Erfindung;
Figur 3- ein drittes Ausführungsbeispiel der Erfindung.
- FIG. 1
- a first embodiment of the invention;
- FIG. 2
- a second embodiment of the invention;
- FIG. 3
- a third embodiment of the invention.
Eine Walze 8 ist im Bereich der Umlenkrolle 7a oberhalb des Ablagebandes 7 angeordnet und übt einen begrenzten Druck auf die Endlosfilamente 3 aus. Im Gegensatz zu einem Kalander wird die Walze 8 zum Ablageband 7 auf Spalt gefahren. Dadurch, dass das Ablageband 7 elastisch nachgibt, werden die Endlosfilamente 3 mit einem kleinen Umschlingungswinkel um die Walze 8 geführt, so dass eine verstärkte Reibung zwischen den Endlosfilamenten 3 und der Walze 8 auftritt, die einer begrenzten Zugbelastung standhält. Damit kann so viel Spannung aufgebaut werden, um die Endlosfilamente 3 über den Zwickel zwischen den Ablagebändern 4 und 7 zu führen, ohne dass diese durchhängen und sich gleichzeitig vom Endlosband 4 lösen, da die trockene Fahrweise zum Verkleben von Endlosfilamenten 3 und Endlosband 4 führen können. Gleichzeitig wird ein Verdichten bzw. Kompaktieren der Endlosfilamente vermieden, so dass nachfolgend eine Vorverfestigung mittels Wasserstrahlverfestigung mit geringem Druck möglich ist. Hierzu ist es vorteilhaft, wenn das Ablageband 7 mit einer geringfügig höheren Geschwindigkeit betrieben wird, als das Ablageband 4. Vorzugsweise kann die Geschwindigkeitsdifferenz bis zu 0,5% betragen. Die Walze 8 kann luftdurchlässig sein oder einen glatten geschlossenen Mantel aufweisen. Alternativ kann die Walze 8 auch eine strukturierte Oberfläche aufweisen, um die Reibung mit den Endlosfilamenten 3 zu erhöhen Die Walze 8 kann mitlaufend oder angetrieben sein. Der Druck durch die Walze 8 auf die Endlosfilamente 3 und das Ablageband 7 reduziert in Verbindung mit der hohen Transportgeschwindigkeit den geringen Durchhang im Zwickel zwischen dem ersten und dem zweiten Ablageband 4, 7. Die Walze 8 kann so angeordnet sein, dass sie einen Druck mit der Umlenkrolle 7a oder mit dem Ablageband 7 auf die Endlosfilamente 3 ausübt und diese dabei leicht (mit definiertem Spalt) klemmt. Ist die Walze 8 angetrieben, so kann ein Verzug von beispielsweise 2-5 % der aufeinanderliegenden Endlosfilamente 3 mit dem Ablageband 7 bzw. der Umlenkrolle 7a eingestellt werden. Bei der hohen Transportgeschwindigkeit der Endlosfilamente 3 kann es vorteilhaft sein, die Walze 8 als luftdurchlässige Walze auszubilden und zu besaugen, da hiermit unerwünschte mitgeschleppte Luftströmungen abgeleitet werden können. Werden beide Ablagebänder 4, 7 mit einer identischen Geschwindigkeit betrieben, kann die Walze 8 mit einer leicht höheren Geschwindigkeit betrieben werden, als das Ablageband 7. Die Umfangsgeschwindigkeit kann bis zu 0,5% größer sein, als die Transportgeschwindigkeit des Ablagebandes 7. Damit werden die Endlosfilamente 3 auf dem Ablageband 7 angeschoben, so dass sich der Durchhang der Endlosfilamente 3 im Zwickel zwischen den Ablagebändern 4, 7 reduziert.A
Nach der Übergabe der Endlosfilamente 3 auf das zweite Ablageband 7 erfolgt mittels eines Düsenbalkens 9 eine erste Verfestigung der Endlosfilamente zu einem Vlies 11. Der Düsenbalken kann mit einem geringen Druck von beispielsweise 10 - 40 bar betrieben werden, um nur eine Vorverfestigung zu erzielen. Hierzu ist unterhalb des Ablagebandes 7 ein Saugkasten 10 angeordnet, mit dem das Wasser des Düsenbalkens 9 durch das Ablageband 7 abgesaugt wird. Die durch den ersten Düsenbalken 9 erfolgte Verfestigung kann vorteilhafterweise sehr leicht sein, damit auf den nachfolgenden Saugtrommel gleichzeitig noch eine Strukturierung stattfinden kann. Erfolgt keine anschließende Strukturierung, kann der Düsenbalken 9 auch mit einem höheren Druck von beispielsweise 40 - 400 bar betrieben werden. Von dem Ablageband 7 wird das Vlies 11 um eine erste Saugtrommel 12 gefördert, die oberhalb des Ablagebandes 7 angeordnet ist. Mindestens ein weiterer Düsenbalken 13 beaufschlagt das Vlies 11 mit einem hohen Druck von 40-400 bar, um dem Vlies 11 eine ausreichende Festigkeit und ggfs. eine Strukturierung zu geben. Die Strukturierung erfolgt in der Regel über eine Musterung der Saugtrommel 12, über die eine Schale mit einem prägenden Muster aufgezogen werden kann. Nach einem Umlauf von ca. 180° um die erste Saugtrommel 12 erfolgt ein weiterer Umlauf um eine zweite Saugtrommel 14, auf der mindestens ein weiterer Düsenbalken 15 das Vlies ebenfalls mit einem hohen Druck von 40-400 bar verfestigt und gegebenenfalls abschließend noch einmal strukturiert. Eine Weiterbehandlung des Vlieses 11 in einer nachfolgenden Anlage zum Präparieren, Trocknen und/oder Aufwickeln ist in dieser Ansicht nicht mehr dargestellt, gehört aber zum gesamten Anlagenkonzept.After the transfer of the
Das Ausführungsbeispiel der
In den Ausführungsbeispielen der
Wird das Ablageband 7 mit einer höheren Geschwindigkeit betrieben als das Ablageband 4, beispielsweise mit bis zu 0,5%, kann die Walze 8 als nicht angetriebene mitlaufende Walze 8 ausgebildet sein. Alternativ kann sie auch angetrieben sein, um mit einem positiven oder negativen Verzug von 2-3% auf die Endlosfilamente 3 zu wirken.If the depositing
In dem Ausführungsbeispiel der
Die Erfindung beschränkt sich in ihrer Ausführung nicht auf das vorstehend angegebene bevorzugte Ausführungsbeispiel. Vielmehr ist eine Anzahl von Varianten denkbar, welche von der dargestellten Lösung auch bei grundsätzlich anders gearteten Ausführungen Gebrauch macht. Sämtliche aus den Ansprüchen, der Beschreibung oder den Zeichnungen hervorgehenden Merkmale und/oder Vorteile, einschließlich konstruktiver Einzelheiten oder räumlicher Anordnungen, können sowohl für sich als auch in den verschiedensten Kombinationen erfindungswesentlich sein.The invention is not limited in its execution to the above-mentioned preferred embodiment. Rather, a number of variants is conceivable, which makes use of the illustrated solution even with fundamentally different types of use. All of the claims, description or drawings resulting features and / or advantages, including constructive Details or spatial arrangements may be essential to the invention, both individually and in the most diverse combinations.
- 11
- Anlageinvestment
- 22
- Spinnerette mit DiffusorSpinnerette with diffuser
- 33
- Endlosfilamentecontinuous filaments
- 44
- Ablagebanddepositing belt
- 4a - 4d4a-4d
- Umlenkrollenguide rollers
- 55
- Saugkastensuction box
- 66
- Saugkastensuction box
- 77
- Ablagebanddepositing belt
- 7a - 7e7a - 7e
- Umlenkrollenguide rollers
- 88th
- Walzeroller
- 99
- Düsenbalkennozzle beam
- 1010
- Saugkastensuction box
- 1111
- Spinnvliesspunbond
- 1212
- Saugtrommelsuction drum
- 1313
- Düsenbalkennozzle beam
- 1414
- Saugtrommelsuction drum
- 1515
- Düsenbalkennozzle beam
- 1616
- Düsenbalkennozzle beam
- 1717
- Wickelreel
Claims (20)
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DE102017129300.0A DE102017129300A1 (en) | 2017-12-08 | 2017-12-08 | Plant and method for producing a spunbonded nonwoven |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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EP4001488A1 (en) * | 2020-11-19 | 2022-05-25 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Device for the manufacture of non-woven fabrics from continuous filaments |
CN114787440A (en) * | 2019-12-17 | 2022-07-22 | 兰精股份公司 | Method for producing a spunbonded nonwoven |
CN115142193A (en) * | 2021-03-29 | 2022-10-04 | 安德里茨库斯特斯有限责任公司 | Device for curing at least one wet-laid or dry-laid fibre layer |
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WO2002055778A1 (en) * | 2001-01-12 | 2002-07-18 | Polymer Group, Inc. | Hydroentanglement of continuous polymer filaments |
WO2005042820A1 (en) * | 2003-10-31 | 2005-05-12 | Rieter Perfojet | Machine for the production of different-quality nonwovens |
EP1967628B1 (en) | 2007-03-08 | 2010-04-28 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Method and device for producing spinning fleece |
EP1408148B1 (en) * | 2002-10-11 | 2013-06-19 | ANDRITZ Perfojet SAS | Process and installation for producing a nonwoven having good tensile strength properties |
-
2017
- 2017-12-08 DE DE102017129300.0A patent/DE102017129300A1/en not_active Withdrawn
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2018
- 2018-10-19 EP EP18201508.1A patent/EP3495543B1/en active Active
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WO2002055778A1 (en) * | 2001-01-12 | 2002-07-18 | Polymer Group, Inc. | Hydroentanglement of continuous polymer filaments |
EP1408148B1 (en) * | 2002-10-11 | 2013-06-19 | ANDRITZ Perfojet SAS | Process and installation for producing a nonwoven having good tensile strength properties |
EP1408148B2 (en) | 2002-10-11 | 2016-11-02 | ANDRITZ Perfojet SAS | Process and installation for producing a nonwoven having good tensile strength properties |
WO2005042820A1 (en) * | 2003-10-31 | 2005-05-12 | Rieter Perfojet | Machine for the production of different-quality nonwovens |
EP1967628B1 (en) | 2007-03-08 | 2010-04-28 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Method and device for producing spinning fleece |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN114787440A (en) * | 2019-12-17 | 2022-07-22 | 兰精股份公司 | Method for producing a spunbonded nonwoven |
CN114787440B (en) * | 2019-12-17 | 2023-09-12 | 兰精股份公司 | Method for producing a spunbonded nonwoven fabric |
EP4001488A1 (en) * | 2020-11-19 | 2022-05-25 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Device for the manufacture of non-woven fabrics from continuous filaments |
CN115142193A (en) * | 2021-03-29 | 2022-10-04 | 安德里茨库斯特斯有限责任公司 | Device for curing at least one wet-laid or dry-laid fibre layer |
EP4067550B1 (en) | 2021-03-29 | 2023-06-14 | Andritz Küsters GmbH | Installation for consolidating at least one wet or dry laid fibre layer to a fleece web |
CN115142193B (en) * | 2021-03-29 | 2024-07-26 | 安德里茨库斯特斯有限责任公司 | Device for curing at least one wet-laid or dry-laid fibrous layer |
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DE102017129300A1 (en) | 2019-06-13 |
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