METHOD FOR THE PRODUCTION OF SPIN-ON FLOOR

Description

[0001] The present invention relates to a method for producing spunbond nonwoven fabric with an embossed pattern, in which a spinning mass is extruded through a plurality of nozzle holes of at least one spinning nozzle to form filaments and the filaments are stretched in the extrusion direction by a stretching air stream, wherein the filaments are deposited on a perforated tray of a conveying device to form a spunbond nonwoven fabric. State of the art

[0002] The production of spunbond nonwovens is known from the prior art, using both spunbond and meltblown processes. In the spunbond process (e.g., GB 2 114 052 A or EP 3 088 585 A1), the filaments are extruded through a die and drawn off and stretched by a drawing unit below. In the meltblown process (e.g., US 5,080,569 A, US 4,380,570 A, or US 5,695,377 A), the extruded filaments are drawn and stretched by hot, high-speed process air as they exit the die. In both technologies, the filaments are laid down in a random orientation on a storage surface, such as a perforated conveyor belt, to form a nonwoven fabric, transported to post-processing steps, and finally wound into rolls.

[0003] US Patent 9,394,637 B2 discloses a process for producing a staple fiber-based nonwoven fabric, wherein the properties of the nonwoven fabric are modified by water jet bonding. Such water jet bonding processes are described, for example, in EP 2 462 269 B1 and EP 1 873 290 B1. In this process, for instance, several layers of nonwoven fabric can be bonded by water jet bonding, and the mechanical properties or the three-dimensional structure of the nonwoven fabric can be modified by perforating the nonwoven fabric or by introducing an embossed pattern.

[0004] It is also known (US 10,273,635, EP 1 616 052 B1 and EP 1 567 322 B1) that in the production of paper webs, embossing patterns can be incorporated directly into the paper web by the conveyor belt and solidified by the subsequent drying step. Since the cellulose fibers are suspended in a thin liquid on the conveyor belt and the liquid is carried away by the conveyor belt while the cellulose fibers remain on the belt, the three-dimensional structure of the conveyor belt is transferred to the paper web.

[0005] Commercially available plants for the production of thermoplastic spunbond nonwovens do not usually require water-steel bonding plants, as the spunbond layers are fused together via a calender.

[0006] It is also known from the prior art to produce cellulosic spunbond nonwovens according to spunbond technology (e.g., US 8,366,988 A) and meltblown technology (e.g., US 6,358,461 A and US 6,306,334 A). In these processes, a lyocell spinning mass is extruded and drawn according to the known spunbond or meltblown methods. Before being laid down to form a nonwoven, however, the filaments are additionally brought into contact with a coagulant to regenerate the cellulose and produce dimensionally stable filaments. The wet filaments are then laid down in random order as a nonwoven fabric.

[0007] The hydroentanglement of lyocell spunbond nonwovens is described, for example, in US 8,282,877 B2. Since lyocell spunbond nonwovens consist of continuous filaments, three-dimensional structures cannot be imprinted using energy-efficient suspension methods as in the paper industry. The moist and heavy filaments are too densely cross-linked for this. Hydroentanglement can only be achieved with a high energy input to structure the cross-linked cellulose filaments, which negatively impacts the energy costs of a cellulose spunbond nonwoven production plant.

[0008] Further relevant information can be found in the documents US 2010 / 162542 A1, US 2011 / 244199 A1 and GB 1 474 102 A. Disclosure of the invention

[0009] The invention therefore aims to provide a method for producing spunbond nonwovens of the type mentioned above, which enables an efficient, technically simple and therefore cost-effective introduction of an embossing pattern into the spunbond nonwoven.

[0010] The invention solves the problem by providing the perforated tray with an embossing structure and an embossing pattern, pressing the filaments into the embossing structure through the stretching airflow, and providing the spunbond nonwoven fabric formed with the embossing pattern.

[0011] It has been shown that direct structuring of the spunbond nonwoven fabric with an embossed pattern can occur during the placement of the filaments onto a tray of the conveyor system, provided the perforated tray has an embossed structure with the desired pattern. The filaments can be pressed into the embossed structure by the stretching airflow, and the resulting spunbond nonwoven fabric can be directly imprinted with the pattern. This eliminates the need for technically complex downstream processing steps for introducing an embossed pattern. An efficient and cost-effective process can therefore be provided.

[0012] The method according to the invention thus enables, in particular, the direct structuring of a cellulosic spunbond nonwoven fabric using three-dimensional embossing structures. The embossing structures can have any embossing pattern.

[0013] The perforated tray of the conveyor system, featuring the embossed structure, can be designed as an integral part of the conveyor system. Suitable conveyor systems include, for example, conveyor belts, rotating drums, or similar devices.

[0014] The production of cellulosic spunbond nonwovens according to the inventive process offers numerous improvements and advantages with regard to efficiency and operation. Since downstream waterjet bonding for imprinting the embossed pattern into the spunbond nonwoven can be omitted, both the costs and the complexity of the production plant can be reduced. Furthermore, electricity and water consumption can be lowered, thus increasing the process's efficiency. In addition, ongoing maintenance costs can also be reduced, as the elimination of waterjet bonding means that no nozzle strips or filters need to be cleaned or replaced.

[0015] It has been found in particular that, due to the high volumes of expanding air used in the production of cellulosic spunbond nonwovens according to the present process, which can be approximately ten times higher than in thermoplastic spunbond nonwovens, the momentum of the expanding airflow on the layup is so high that the extruded filaments are reliably pressed into the embossed structure of the layup. This is because the extruded and expanded filaments still exhibit high deformability during the formation of the spunbond nonwoven on the layup, and can thus reliably follow the raised and recessed areas of the embossed structure, thereby permanently imprinting the embossed pattern of the embossed structure onto the formed spunbond nonwoven.

[0016] A suction system can be provided below the perforated tray, which applies negative pressure to the tray in order to efficiently remove the expanding airflow impacting it. This further increases the reliability of the process, as it prevents the formation of unwanted turbulence in the tray area.

[0017] The reliability and quality of the embossing process can be influenced by numerous parameters. For example, the depth of the embossing pattern in the spunbond can be controlled by increasing or decreasing the stretching air pressure, increasing or decreasing the vacuum under the layup, and by changing the embossing structure in the layup, such as by changing the depth of the embossing structure.

[0018] According to the invention, it has been found that, depending on the embossing structure in the conveyor's tray, a wide variety of embossing patterns can be produced on the surface of the spunbond nonwoven and / or a wide variety of perforations, which particularly influence the thickness, appearance, feel, and softness of the produced spunbond nonwoven. Thus, after the inventive treatment with an embossing pattern, the spunbond nonwoven can, for example, have a significantly greater perceptible thickness than a spunbond nonwoven with the same basis weight but without an embossing pattern.

[0019] In addition to the embossing structure, the layup layer features perforations for the release of gases and / or liquids. These perforations are distinct from the embossing structures, which are responsible for imprinting the embossing pattern onto the spunbond nonwoven. The perforations, or the perforated layup layer itself, therefore do not essentially create an embossing pattern in the spunbond nonwoven.

[0020] Reliable imprinting of the embossed pattern into the spunbond nonwoven can be achieved if the height of the embossed structures, i.e., the height difference between projections and depressions in the embossed structure, is greater than or equal to 0.1 mm. In preferred embodiments of the invention, the height of the embossed structures is at least 0.5 mm, and particularly preferably at least 1 mm. Furthermore, it can be advantageous for the reliability of the imprinting of the pattern if the height of the embossed structures is less than or equal to 10 mm, in preferred embodiments of the invention less than or equal to 5 mm, or particularly preferably less than or equal to 3 mm.

[0021] Furthermore, if the spunbond nonwoven fabric undergoes at least one treatment step after formation, whereby the embossed pattern in the nonwoven fabric is essentially retained after this treatment step, the reliability and simplicity of the process can be further improved. Such a treatment step could be, for example, washing or drying, whereby the spunbond nonwoven fabric with the embossed pattern is washed and subsequently dried. Washing reliably removes solvent residues from the spunbond nonwoven fabric, thus creating a permanently stable and solvent-free spunbond nonwoven fabric. The washing process can preferably be carried out as a countercurrent wash.

[0022] If the spunbonded nonwoven fabric undergoes waterjet bonding after forming, and a second embossing pattern is applied during this process, complex embossing patterns can be introduced into the nonwoven fabric in a technically simple manner. These patterns can be created, for example, by superimposing two or more embossing patterns. Alternatively, it is also conceivable that the nonwoven fabric can be embossed with a second pattern on a second side through waterjet bonding. In any case, the introduction of the second embossing pattern into the nonwoven fabric can be carried out in such a way that the first embossing pattern, which was created by pressing the filaments into the embossing structure of the layer in the nonwoven fabric, remains essentially unchanged during waterjet bonding.

[0023] In a further embodiment of the invention, a method for producing multilayer spunbond nonwovens can be provided, in which the spinning mass is extruded into filaments through a plurality of nozzle holes of several spinnerets arranged in series, and the filaments are stretched in the extrusion direction by a stretching airflow, with the respective filaments from the spinnerets being laid one on top of the other on the perforated tray to form a multilayer spunbond nonwoven. The multilayer spunbond nonwoven thus created can be reliably imprinted with the embossing pattern as described above and can additionally exhibit a desired multilayer structure (e.g., by layering spunbond nonwovens with different properties).

[0024] Depending on the basis weight of the individual spunbond layers in the multi-layered spunbond, the embossing pattern can then be formed either through all spunbond layers, through a part of the spunbond layers or only in a first spunbond layer.

[0025] The process according to the invention can be used particularly advantageously for the production of spunbond nonwovens from lyocell spinning mass. The spunbond produced is then a cellulosic spunbond, wherein the lyocell spinning mass is a solution of cellulose in a direct solvent, in particular a tertiary amine oxide in aqueous solution.

[0026] The direct solvent can be a tertiary amine oxide, preferably N-methylmorpholine N-oxide (NMMO) in aqueous solution, or an ionic liquid in which cellulose can be dissolved without chemical derivatization.

[0027] The cellulose content in the spinning mass can be between 4% and 17%, preferably between 5% and 15%, and particularly preferably between 6% and 14%.

[0028] The throughput of cellulose per spunbond nozzle can range from 5 kg / h per m nozzle length to 500 kg / h per m nozzle length.

[0029] The stretching airflow can also have a temperature between 20 °C and 200 °C, preferably between 60 °C and 160 °C, particularly preferably between 80 °C and 140 °C.

[0030] The stretching air pressure, i.e. the air pressure of the stretching air flow at the exit from the stretching air nozzles, can be between 0.05 bar and 5 bar, preferably between 0.1 bar and 3 bar, particularly preferably between 0.2 bar and 1 bar.

[0031] The required amount of expanding air can range from 20 Nm³ (standard cubic meters) to 900 Nm³ per kg of cellulose. In preferred embodiments of the invention, the required amount of expanding air can preferably range from 40 Nm³ to 500 Nm³ per kg of cellulose, and particularly preferably from 60 Nm³ to 300 Nm³ per kg of cellulose.

[0032] The internal structure of spunbond nonwovens can also be reliably controlled if the filaments extruded from the spinneret are at least partially coagulated. For this purpose, the filaments can preferably be exposed to a coagulation air stream containing a coagulation fluid. This coagulation air stream can preferably be a fluid containing water and / or a coagulant, e.g., gas, mist, vapor, etc.

[0033] If NMMO is used as a direct solvent in the lyocell spinning mass, the coagulation fluid can be a mixture of fully demineralized water and 0 wt.% to 40 wt.% NMMO, preferably 10 wt.% to 30 wt.% NMMO, and particularly preferably 15 wt.% to 25 wt.% NMMO. This allows for particularly reliable coagulation of the extruded filaments.

[0034] The invention also aims to provide a device for the production of spunbond nonwovens according to the preamble of claim 8, which enables a reliable and technically simple introduction of an embossing pattern into the spunbond nonwoven.

[0035] The invention solves the stated problem through the features of the characterizing part of claim 8.

[0036] If the perforated tray has an embossing structure with an embossing pattern, a technically and structurally simple device can be created that allows for the reliable embossing of a spunbond nonwoven fabric with this pattern. The filaments are first extruded through the spinnerets and then stretched by the stretching airflow in the stretching unit. The stretched and accelerated filaments can then directly impact the tray with the embossing structure. The stretching airflow is oriented in such a way that the extruded and stretched filaments are pressed into the embossing structure of the tray, thus imprinting the spunbond nonwoven fabric with the embossing pattern.

[0037] The present invention thus provides a device that enables the direct structuring of a spunbond nonwoven fabric, i.e., the introduction of an embossing pattern into it, and the associated modification of the three-dimensional structure, appearance, feel, and softness of the spunbond nonwoven. This is achieved, in particular, without the device requiring additional means, such as waterjet bonding, in which the spunbond nonwoven fabric is provided with the corresponding embossing pattern. By eliminating waterjet bonding, both the investment costs for a large-scale spunbond nonwoven production line and the ongoing production costs of the spunbond nonwoven fabric can be reduced, since the electricity and water consumption associated with waterjet bonding can also be eliminated. The economic efficiency of a plant for the production of spunbond nonwoven fabrics with embossing patterns is thus improved.The investment and operating costs for waterjet bonding can either be completely eliminated or significantly reduced. If waterjet bonding is to be used downstream for further bonding of the nonwoven fabric, the operating costs can be significantly reduced, as such a waterjet bonding process can be operated at a considerably lower power level.

[0038] The aforementioned advantages are particularly relevant when the device includes a washing unit for washing the spunbond after forming and a dryer for drying the spunbond after washing.

[0039] If the device also features a suction port beneath the perforated tray to remove the stretching airflow, the pressing of the filaments into the tray's embossed structure can be further improved, thus increasing the device's reliability. This is especially true if the stretching airflow is also extracted through the perforated tray.

[0040] If the device between the laundry and the dryer has water jet bonding on a conveyor belt, wherein the conveyor belt has a second embossing structure with a second embossing pattern, then a combination of the inventive direct structuring of the spunbond nonwoven on the tray and an additional direct structuring of the spunbond nonwoven in the water jet bonding can be carried out technically simply, thus enabling the production of spunbond nonwovens with complex multilayer embossing patterns. Brief description of the characters

[0041] Preferred embodiments of the invention are described in more detail below with reference to the drawings. These show: Fig. 1 is a schematic representation of the method according to a first embodiment, Fig. 2 is a schematic representation of the method according to a second embodiment, and Fig. 3 is a schematic detail view of the extrusion, stretching and depositing of the filaments according to the in Fig. 1. Fig. 1 presented procedure. Ways to implement the invention

[0042] Fig. 1Figure 1 shows a method 100 according to the invention for producing a spunbond nonwoven fabric 1 with an embossed pattern 10 and a device 200 for carrying out the method 100 according to a first embodiment of the invention. In a first process step, a spinning mass 2 is produced from a cellulosic raw material and fed to a spinneret 3 of the device 200. The cellulosic raw material for producing the spinning mass 2, the production of which is not shown in detail in the figures, can be a pulp suitable for the production of lyocell fibers from wood or other plant-based raw materials. However, it is also conceivable that the cellulosic raw material consists of or contains production waste from spunbond nonwoven fabric production or recycled textiles. The spinning mass 2 is a solution of cellulose in NMMO and water, wherein the cellulose content in the spinning mass is between 3 wt.% and 17 wt.%.

[0043] In a next step, the spinning mass 2 is extruded through a multitude of nozzle holes of the spinning nozzle 3 to form filaments 4. Fig. 3 Figure 1 shows a detailed schematic representation of the process flow. The extruded filaments 4 are then accelerated and stretched in a stretching airflow 5. To generate the stretching airflow 5, a stretching device 6 is provided in the spinneret 3, which ensures that the stretching airflow 5 exits the spinneret 3 in order to accelerate the filaments 4 after their extrusion.

[0044] In one embodiment, the drawing airflow can exit between the nozzle holes of the spinneret 3. In another embodiment, the drawing airflow can alternatively exit around the nozzle holes. This is not shown in detail in the figures. Such spinnerets 3 with drawing devices for generating a drawing airflow are known from the prior art (US 3,825,380 A, US 4,380,570 A, WO 2019 / 068764 A1).

[0045] In the preferred embodiment shown, the extruded and stretched filaments 4 are also exposed to a coagulation air stream 11, which is provided by a coagulation device 12. The coagulation air stream 11 typically contains a coagulation fluid, for example in the form of vapor, mist, etc. Through contact of the filaments 4 with the coagulation air stream 11 and the coagulation fluid contained therein, the filaments 4 are at least partially coagulated, which in particular reduces adhesion between the individual extruded filaments 4.

[0046] As from Fig. 3As further shown, the stretched and at least partially coagulated filaments 4 are then deposited in a random position on the tray 7 of a conveying device 8. The tray 7 of the conveying device 8 has an embossed structure 9 with an embossed pattern 10. The extruded and stretched filaments 4 are then pressed into the tray 7 by means of the stretching airflow 5 and form the spunbond nonwoven 1 there. After the formation of the spunbond nonwoven 1, it exhibits the embossed pattern 10 from the embossed structure 9. The embossed pattern 10, or the three-dimensional structure of the spunbond nonwoven 1, can thus be embossed by the embossed structure 9 in the tray 7 according to the invention, and the directly structured cellulosic spunbond nonwoven 1 according to the invention can be produced without additional downstream process steps.

[0047] As in Fig. 1As shown, the device 200 or the method 100 according to the invention can in particular do without water jet hardening, which advantageously reduces the length, investment costs and operating costs of the device 200.

[0048] After forming, the spunbond nonwoven 1 is conveyed via conveyor belt 13 through a washing unit 14, in which it is washed to remove solvent residues, namely the NMMO contained in the spinning mass 2. In a preferred embodiment, the washing unit 14 is a multi-stage countercurrent wash, which is not shown in the figures. The washed spunbond nonwoven 1 is then subjected to drying in a dryer 15 to remove any remaining moisture and obtain a finished spunbond nonwoven 1.

[0049] Finally, the process 200 is completed by optionally winding 16 and / or packaging the finished spunbond nonwoven 1.

[0050] In Fig. 2 A method 101 and a device 201 according to a second embodiment of the invention are shown. The formation of the spunbond nonwoven 1, including extrusion, drawing, coagulation, and placement on the tray 7 having the embossed structure 9, is carried out identically to the first embodiment shown above. Fig. 1 and 3 described.

[0051] In addition, in method 201 according to the second embodiment, water jet bonding 17 is provided in addition to the direct structuring on the tray 7 according to the invention. The spunbond nonwoven 1 is placed on a further conveyor belt 18 after washing 14, the conveyor belt 18 having a second embossing structure 19 with a second embossing pattern 20. The spunbond nonwoven 1, which already has the embossing pattern 10, is then water jet bonded over the conveyor belt 18, i.e., sprayed with water under high pressure, whereby the spunbond nonwoven 1 is pressed into the second embossing structure 19 of the conveyor belt 18 and the second embossing pattern 20 is transferred onto the spunbond nonwoven 1.

[0052] By combining direct structuring on the tray 7 with the embossing structure 9 and waterjet bonding with the second embossing structure 19, even more product variations of the spunbond nonwoven 1 with embossing patterns 10, 20 can be produced. Despite the inclusion of waterjet bonding 17, both the investment costs of the device 201 and the operating costs of the waterjet bonding 17 can be significantly reduced compared to prior art systems, since a large part of the three-dimensional structuring of the spunbond nonwoven 1 already takes place on the tray 7.

[0053] In a further embodiment, which is only indicated in the figures, the device 100 or the method 200 can have at least one first spinneret 3 and one second spinneret 30, wherein the spinning mass 2 is simultaneously extruded through the first spinneret 3 and the second spinneret 30 to form the filaments 4, 40. The filaments 4, 40 are each stretched in the extrusion direction by means of a stretching air stream 5, 50 and at least partially coagulated, wherein the filaments 4 from the first spinneret 3 are deposited onto the conveying device 8 to form a first spun web 1, and the filaments 40 from the second spinneret 30 are deposited onto the conveying device 8 to form a second spun web.

[0054] The filaments 40 of the second spinneret 30 are deposited onto the first spunbond 1 on the conveyor 8 to form the second spunbond, in order to obtain a multilayer spunbond, which is not shown in detail in the figures. Surprisingly, in the multilayer spunbond according to the invention, the embossed pattern 10, which was introduced into the first spunbond 1 by the deposit 7, can also be reproduced throughout the entire multilayer spunbond.

[0055] Preferably, the first spunbond nonwoven 1 and the second spunbond nonwoven together in the form of the multi-layered spunbond nonwoven pass through the washing machine 14 and the dryer 15.

[0056] In another embodiment, which is not shown in detail in the figures, the multilayer spunbond nonwoven can be separated again in a further step, in particular after washing 14, into at least the first spunbond nonwoven 1 and second spunbond nonwoven, wherein the first spunbond nonwoven 1 and second spunbond nonwoven can undergo further steps separately after separation, such as water jet bonding 17 and / or drying 15.

[0057] In another variant, the first spunbond nonwoven 1 and the second spunbond nonwoven can alternatively undergo water jet bonding 17 together and thereby be permanently bonded to each other to form the multi-layered spunbond nonwoven.

[0058] Finally, the multi-layered spunbond nonwoven can be fed to an optional winding unit 16.

[0059] Similarly, the first spunbond 1 and the second spunbond can each have different internal properties, for example a different basis weight, or different air permeabilities, and thus form a multi-layered spunbond with properties that vary in cross-section. Examples

[0060] The inventive method is described below using an example. Spunbond nonwovens were produced according to the method and the thickness of the spunbond nonwoven was determined according to DIN EN ISO 9073-2: 1997-02 (Test methods for nonwovens - Part 2: Determination of thickness).

[0061] In the examples, cellulosic spunbond nonwovens were produced from a lyocell spinning mass, using a solution of cellulose in a mixture of water and NMMO as the spinning mass.

[0062] The cellulose throughput per spinneret was 300 kg / h / m in all examples. The drawing air pressure of the drawing airflow was 0.5 bar in all examples. In the example, the spunbond nonwovens were produced as described above using the inventive method. The produced spunbond nonwovens had basis weights between 10 and 40 g / m². The spunbond nonwovens were formed according to the specifications in Table 1 on a substrate provided with an embossed structure according to the invention or on a conventional (unstructured) substrate.

[0063] Table 1 shows the measured thicknesses of the produced spunbond nonwovens. It demonstrates that by directly structuring the spunbond nonwoven during layup with an embossed structure, a significant change in the thickness of the spunbond nonwoven can be achieved, despite otherwise identical process parameters. Table 1: Measured thicknesses of the spunbond nonwovens according to the example Weight per unit area (g / m²< ) Tray with embossed texture Thickness according to DIN 29073 (mm) 10 no 0.09 - 0.14 10 Yes 0.21 - 0.25 40 no 0.25 - 0.28 40 Yes 0.37 - 0.44

Claims

1. A process for the production of spunbonded nonwoven (1) with an embossing pattern (10), wherein a spinning mass (2) is extruded through a plurality of nozzle holes of at least one spinneret (3, 30) to form filaments (4, 40) and the filaments (4, 40) are drawn by a drawing air stream (5, 50), in each case, in the extrusion direction, with the filaments (4, 40) being deposited on a perforated tray (7) of a conveying device (8) to form a spunbonded nonwoven (1), characterized in that the perforated tray (7) has an embossing structure (9) with an embossing pattern (10), the filaments (4, 40) are pressed into the embossing structure (9) by the drawing air stream (5, 50) and the spunbonded nonwoven (1) thus formed is provided with the embossing pattern (10).

2. A process according to claim 1, characterized in that the spunbonded nonwoven (1) is subjected to at least one treatment step after the formation, wherein the embossing pattern (10) is preserved in the spunbonded nonwoven (1) after the at least one treatment step.

3. A process according to claim 1 or 2, characterized in that the at least one treatment step consists in washing (14) and / or drying (15).

4. A process according to any of claims 1 to 3, characterized in that the spunbonded nonwoven (1) provided with the embossing pattern (10) undergoes a hydroentanglement (17) after the formation, with the spunbonded nonwoven (1) being provided with a second embossing pattern (20) during the hydroentanglement (17).

5. A process according to any of claims 1 to 4, characterized in that the spinning mass (2) is extruded through a plurality of nozzle holes of several spinnerets (3, 30) arranged one behind the other to form filaments (4, 40) and the filaments (4, 40) are each drawn in the extrusion direction by a drawing air stream (5, 50), wherein the respective filaments (4, 40) of the spinnerets (3, 30) are deposited on top of each other on the perforated tray (7) to form a multilayered spunbonded nonwoven.

6. A process according to any of claims 1 to 5, characterized in that the spunbonded nonwoven (1) is a cellulosic spunbonded nonwoven (1) and the spinning mass (2) is a solution of cellulose in a direct solvent, in particular a tertiary amine oxide in an aqueous solution.

7. A process according to claim 6, characterized in that, after the extrusion from the spinneret (3, 30), the filaments (4, 40) are coagulated at least partly in particular by a coagulation air stream (11), which preferably additionally comprises a coagulation liquid.

8. A device for the production of spunbonded nonwoven (1) with an embossing pattern (10), comprising at least one spinneret (3, 30) for extruding a spinning mass (2) into filaments (4, 40), comprising a drawing device (6) for drawing the extruded filaments (4, 40) by means of a drawing air stream (5, 50), the drawing device being allocated to the spinneret (3, 30), and comprising a conveying device (8) which has a perforated tray (7) for depositing the filaments (4, 40) and forming the spunbonded nonwoven (1), characterized in that the perforated tray (7) has an embossing structure (9) with an embossing pattern (10) for pressing the filaments (4, 40) into the embossing structure (9) by means of the drawing air stream (5, 50) and providing the embossing pattern (10) in the spunbonded nonwoven (1) that has been formed.

9. A device according to claim 8, characterized in that the device (200, 201) comprises a washing (14) for washing the spunbonded nonwoven (1) after it has been formed and a dryer (15) for drying the spunbonded nonwoven (1) after the washing (14).

10. A device according to claim 8 or 9, characterized in that the device (200, 201) exhibits a suction underneath the perforated tray (7) for discharging the drawing air stream (5, 50).

11. A device according to any of claims 8 to 10, characterized in that the device (200, 201) comprises a hydroentanglement (17) on a conveyor belt (18) between washing (14) and dryer (15), the conveyor belt (18) having a second embossing structure (19) with a second embossing pattern (20).