Spinneret, spinning method and solution spinning method for producing bicomponent fiber filaments

Abstract

The invention relates to a spinneret for producing bicomponent fiber filaments. The invention also relates to a spinning process for producing bicomponent fiber filaments using such a spinneret, as well as a solution spinning process for producing bicomponent fiber filaments.

Description

[0001] The invention relates to a spinneret for producing bicomponent fiber filaments. The invention also relates to a spinning process for producing bicomponent fiber filaments using such a spinneret, as well as a solution spinning process for producing bicomponent fiber filaments.

[0002] Bicomponent fiber filaments are generally produced by extruding two polymers from the same spinneret, with both polymers contained within the same filament. Bicomponent fiber filaments offer tremendous possibilities for the production of fibers with various desired chemical and physical properties, as well as geometric configurations, such as side-by-side, core-sheath, island-lake, etc. Because two polymers are used simultaneously, the potential benefits that are not available with a single polymer alone can be maximized.

[0003] Bicomponent fiber filaments are typically produced using a melt spinning process. This results in a fiber with properties that depend on the characteristics of the two polymers. Such bicomponent fiber filaments can be used for functional clothing or hygiene products in the textile industry.

[0004] Of great importance for the technical implementation is a spinneret, which has a special design for the production of bicomponent fiber filaments. It typically consists of a metal plate with several tiny holes, the so-called nozzle bores, through which two molten polymers are conveyed separately from each other until just before exiting the nozzle bores.

[0005] The spinneret structure is crucial for controlling the arrangement of the two polymers in the bicomponent fiber filaments. While melt spinning is the state of the art and commercially used, a commercially applicable solution spinning process for producing bicomponent fiber filaments with a defined polymer arrangement is not yet known.

[0006] The object of the present invention is to provide a spinneret, a spinning process using the spinneret, and a solution spinning process with which a first and a second spinning mass, which may comprise a first and a second spinning solution, can be used to produce bicomponent fiber filaments.

[0007] The problem is solved by a spinneret according to claim 1 and by a spinning process for producing bicomponent fiber filaments using the spinneret according to claim 14. The respective dependent claims specify advantageous embodiments of the spinneret and the spinning process according to the invention.

[0008] According to the invention, a spinneret for producing bicomponent fiber filaments is provided, comprising a base body with a first surface and a second surface opposite the first surface.

[0009] Furthermore, the spinneret according to the invention comprises at least one pair of circumferential or quasi-circular channels, which has at least one first circumferential or quasi-circular channel for supplying a first spinning mass and at least one second circumferential or quasi-circular channel for supplying a second spinning mass. A quasi-circular channel means that it has two ends that are close together but not connected. A channel can be understood here as a volume in which a spinning mass, in particular a spinning solution, can be stored and flowed. If the first and second spinning masses comprise a first and a second spinning solution, the spinneret can be referred to as a wet spinneret.

[0010] The at least one first circumferential or quasi-circular channel and the at least one second circumferential or quasi-circular channel run separately from each other beneath the first surface of the base body. In this way, the first spinning mass and the second spinning mass can be transported separately into their respective circumferential or quasi-circular channels.

[0011] Furthermore, the spinneret according to the invention comprises a plurality of nozzle bores on the first surface of the base body. Each of the plurality of nozzle bores opens the at least one first circumferential or quasi-circular channel and the at least one second circumferential or quasi-circular channel to the first surface of the base body. In addition, the at least one first circumferential or quasi-circular channel and the at least one second circumferential or quasi-circular channel converge before entering the plurality of nozzle bores. The design enables the first and second spinning masses to meet before entering the nozzle bores and to exit the nozzle bores simultaneously.

[0012] To create the nozzle holes, material from the base body can be removed from its first surface in the direction of the at least one pair of circumferential or quasi-circular channels, for example, by chemical etching or laser cutting. However, if the base body is manufactured as a whole using a 3D printer, the nozzle hole creation step is unnecessary. By arranging dotted openings on the base body's first surface, the first and second spinning materials can be extruded exclusively from the nozzle holes, producing a single fiber from each of the first and second spinning materials at each nozzle hole. The number of fibers produced is equal to the number of nozzle holes.

[0013] The at least one first circumferential or quasi-circular channel has at least one first supply connection for supplying the first spinning mass to the channel itself. Likewise, the at least one second circumferential or quasi-circular channel has at least one second supply connection for supplying the second spinning mass to the channel itself. The at least one first supply connection and the at least one second supply connection each extend from the first circumferential or quasi-circular channel and the second circumferential or quasi-circular channel, respectively, to the second surface of the base body.Thus, the first supply port, the first circumferential or quasi-circular channel, and each nozzle bore form a first passage for the first spinning mass along the base body from the second surface to the first surface. Similarly, the second supply port, the second circumferential or quasi-circular channel, and each nozzle bore form a second passage for the second spinning mass along the base body from the second surface to the first surface.

[0014] This spinneret according to the invention is particularly advantageous for the production of bicomponent fiber filaments in which a first polymer, which is soluble in the first spinning solution, and a second polymer, which is soluble in the second spinning solution, are arranged side-by-side.

[0015] Preferably, the spinneret can comprise n pairs of circumferential or quasi-circular channels. Here, n is an integer greater than 1, preferably 2, 3, 4, or 5. The n pairs of circumferential or quasi-circular channels can be arranged concentrically to optimally utilize the interior space of the substrate. This allows the maximum amount of bicomponent fiber filaments to be produced for a given substrate size.

[0016] The at least one first supply connection can have at least n first distribution channels. At least one first distribution channel can be configured to supply each of the n first circulating or quasi-circulating channels with the first spinning mass. Likewise, the at least one second supply connection can have at least n second distribution channels. At least one second distribution channel can be configured to supply each of the n second circulating or quasi-circulating channels with the second spinning mass. Preferably, the distance between any two adjacent first distribution channels can be equal, and / or the distance between any two adjacent second distribution channels can be equal.

[0017] In a further advantageous embodiment, the at least first supply connection can have a first central supply bore configured to supply the first n distribution channels with the first spinning mass. Likewise, the at least second supply connection can have a second central supply bore configured to supply the second n distribution channels with the second spinning mass. This eliminates the need for a separate supply bore for each of the first n distribution channels and each of the second distribution channels. This simplifies the design of the spinneret and thus its manufacture.

[0018] In a preferred embodiment, the at least one first supply connection can have at least or exactly 2n first distribution channels.

[0019] At least two or exactly two first distribution channels can be configured to supply each of the n first circulating or quasi-circulating channels with the first spinning mass. The at least one second supply connection can also have at least two or exactly two second distribution channels. At least two or exactly two second distribution channels can be configured to supply each of the n second circulating or quasi-circulating channels with the second spinning mass. By increasing the number of first distribution channels and the number of second distribution channels from n to at least two or exactly two, the first and second spinning masses of the n pairs of circulating or quasi-circulating channels are supplied more quickly, which can lead to the rapid production of bicomponent fiber filaments. This is advantageous for the mass production of bicomponent fiber filaments.

[0020] It is preferred if the first supply connection has a first non-circulating intermediate channel arranged below the 2n first distribution channels and in fluid communication with them. The n first distribution channels can be arranged at a first end of the first intermediate channel, and the further n first distribution channels can be arranged at a second end of the first intermediate channel. It is further preferred if the second supply connection has a second non-circulating intermediate channel arranged below the 2n second distribution channels and in fluid communication with them. The n second distribution channels can be arranged at a first end of the second intermediate channel, and the further n second distribution channels can be arranged at a second end of the second intermediate channel.

[0021] The embodiment makes it possible to arrange the n first distribution channels and the further n first distribution channels as well as the n second distribution channels and the further n second distribution channels as far apart as possible, so that the pressure can be distributed better.

[0022] Optionally, the first intermediate channel can be configured in cross-section perpendicular to the two surfaces of the base body in the form of a circular segment and / or arranged parallel to the two surfaces of the base body. Additionally or alternatively, the second intermediate channel can be configured in cross-section perpendicular to the two surfaces of the base body in the form of a circular segment and / or arranged parallel to the two surfaces of the base body. This is particularly advantageous if the base body has a cylindrical shape.

[0023] In a preferred embodiment, the first intermediate channel can have a first distributor at each of its two ends. The first spinning mass can be distributed from the first intermediate channel through the two first distributors into the 2n first distribution channels. Additionally or alternatively, the second intermediate channel can have a second distributor at each of its two ends. The second spinning mass can be distributed from the second intermediate channel through the two second distributors into the 2n second distribution channels. In particular, the two first distributors and the two second distributors can have the same shape, such as an elliptical cylinder, and / or the same size.

[0024] Advantageously, the first central supply bore can be located midway between the two ends of the first intermediate channel, and the second central supply bore can be located midway between the two ends of the second intermediate channel. Firstly, the spaces at the midpoints of the first and second intermediate channels are larger than those at the respective ends where the first and second distributors are located, thus facilitating the placement of the first and second central supply bores. Secondly, the first and second spinning masses can be transported the same distance from the midpoints of the first and second intermediate channels to their respective ends.

[0025] In a preferred embodiment, the first intermediate channel and the second intermediate channel can be arranged in the same plane within the base body, which is parallel to the two surfaces of the base body. The distance between the first intermediate channel and the first surface of the base body is equal to the distance between the second intermediate channel and the first surface of the base body.

[0026] The first distribution channels can be arranged parallel to each other, and the second distribution channels can also be arranged parallel to each other. It is advantageous if the first parallel distribution channels and the second parallel distribution channels are not parallel, i.e., arranged at an angle to each other. It is particularly advantageous if the distance between the first parallel distribution channels and the second parallel distribution channels gradually decreases in the direction from the second surface to the first surface of the base body. This design significantly improves the pressure distribution.

[0027] However, it is possible that the first parallel distribution channels and the second parallel distribution channels are arranged parallel to each other, for example, perpendicular to the two surfaces of the base body. This design offers a shorter conveying path for the first and second spinning masses.

[0028] To technically implement the spinneret construction described above, the spinneret can comprise several plates.

[0029] In one embodiment, the spinneret body can be modular and comprise a first plate. The first plate has the first surface of the body and a second surface opposite the first surface of the body. In this case, all nozzle bores are arranged on the first surface of the first plate.

[0030] At least one circumferential or quasi-circumferential recess can extend from the second surface of the first plate to the first surface of the first plate and be opened towards the first surface of the first plate by the plurality of nozzle bores.

[0031] In addition to the first plate, the spinneret body can include a second plate, which is positioned below the first plate in an operating state. The second plate has a first surface and a second surface opposite the first surface. The first surface of the second plate faces the second surface of the first plate.

[0032] On the first surface of the second plate, at least one circumferential or quasi-circumferential ridge can be arranged and project from the first surface of the second plate. In particular, each ridge of the second plate can engage in a recess of the first plate and lead to an upper end of the recess of the first plate, thereby dividing the recess of the first plate into a first compartment and a second compartment.

[0033] At least one pair of circumferential or quasi-circular depressions, comprising a first circumferential or quasi-circular depression and a second circumferential or quasi-circular depression, may be formed in the first surface of the second plate. The first depression and the second depression may be separated by the ridge and adjacent to the ridge. The first compartment in the first plate and the first depression in the second plate together form the first circumferential or quasi-circular channel. Likewise, the second compartment in the first plate and the second depression in the second plate together form the second circumferential or quasi-circular channel.

[0034] Due to the high demands on the precision of the nozzle bores, the recess, the burr, and the indentations in terms of geometry and chemical resistance to the first and second spinning mass, the material selection for the first plate and the second plate is very important.

[0035] In order to selectively convey the first spinning mass and the second spinning mass into the first and second channels, the width of the recess of the first plate on the second surface of the first plate, projected from the first plate onto the second plate, can be equal to a width resulting from the addition of the width of the first depression of the second plate, the width of the ridge of the second plate, and the width of the second depression of the second plate.

[0036] The first plate can have n circumferential or quasi-circular recesses. n is an integer greater than 1, preferably 2, 3, 4 or more. In particular, the n circumferential or quasi-circular recesses can be arranged concentrically. Corresponding to the n circumferential or quasi-circular recesses of the first plate, the second plate can have n circumferential or quasi-circular ridges and n pairs of circumferential or quasi-circular depressions. This allows n pairs of circumferential or quasi-circular channels with n first channels and n second channels to be formed.

[0037] To supply the n first channels, the second plate can have at least n first distribution channels. At least one first distribution channel can be arranged below each of the n first recesses and be in fluid communication with each of the n first recesses. To supply the n second channels, the second plate can have at least n second distribution channels. At least one second distribution channel can be arranged below each of the n second recesses and be in fluid communication with each of the n second recesses.

[0038] To transport the first spinning mass more quickly into the first n channels, the second plate can have at least or exactly 2n first distribution channels. At least or exactly two first distribution channels can be arranged below each of the first n wells and be in fluid communication with each of the first n wells. To transport the second spinning mass more quickly into the second channels, the second plate can have at least or exactly 2n second distribution channels. At least or exactly two second distribution channels can be arranged below each of the second wells and be in fluid communication with each of the second wells.

[0039] To connect the 2n first distribution channels to the first central supply bore and to connect the 2n second distribution channels to the second central supply bore, the second plate can comprise two first distributors and two second distributors. Each first distributor can be formed by a first recess in the second surface of the second plate, each open to the n first distribution channels. Each second distributor can be formed by a second recess in the second surface of the second plate, each open to the n second distribution channels.

[0040] Since the first spinning mass and the second spinning mass are basically distributed via the first distributors and the 2n first distribution channels as well as via the second distributors and the 2n second distribution channels into the n pairs of circulating or quasi-circulating channels, the second plate can also be called a distributor plate.

[0041] The spinneret can include a third plate, which is positioned below the second plate in an operating state. The third plate has a first surface and a second surface of the base body opposite the first surface. The first surface of the third plate faces the second surface of the second plate. The third plate serves both to hold and support the first and second plates and to connect to external spinning compound lines for the first and second spinning compounds.

[0042] In the first surface of the third plate, the first intermediate channel can be formed by a first non-circular depression. A first end of the first non-circular depression of the third plate can be in fluid communication with one of the two first recesses of the second surface of the second plate, and a second end of the first non-circular depression of the third plate can be in fluid communication with the other of the two first recesses of the second surface of the second plate. The first central supply bore can be located at the midpoint between the two ends of the first non-circular depression of the third plate and extend from there to the second surface of the third plate.

[0043] In the first surface of the third plate, the second intermediate channel can be similarly formed by a second non-circular depression. A first end of the second non-circular depression of the third plate can be in fluid communication with one of the two second recesses of the second surface of the second plate, and a second end of the second non-circular depression of the third plate can be in fluid communication with the other of the two second recesses of the second surface of the second plate. The second central supply bore can be adjacent to the midpoint between the two ends of the second non-circular depression and extend from there to the second surface of the third plate.

[0044] The first non-circular depression and the second non-circular depression in the first surface of the third plate connect, on the one hand, the 2n first distribution channels and the 2n second distribution channels upwards, and on the other hand, the first central supply bore and the second central supply bore downwards, so that the first non-circular depression and the second non-circular depression can be understood as an intermediate channel.

[0045] To seal the at least one pair of circumferential or quasi-circular channels, at least one circumferential or quasi-circular sealing groove can be arranged in the second surface of the first plate. In this context, at least one circumferential or quasi-circular sealing ridge can be arranged on the first surface of the second plate and project from the first surface of the second plate. Each sealing ridge of the second plate engages in each sealing groove of the first plate, such that the sealing ridge contacts an inner wall of the sealing groove, preferably any point on the inner wall of the sealing groove. This ensures that the first plate and the second plate interlock completely during assembly of the base body.

[0046] If the spinneret comprises n pairs of circumferential or quasi-circular channels, the first plate can have n+1 circumferential or quasi-circular sealing grooves and the second plate can have n+1 circumferential or quasi-circular sealing ridges. The n+1 sealing grooves can be adjacent to the n recesses in the second surface of the first plate. Preferably, the n+1 sealing grooves and the n recesses in the second surface of the first plate can be arranged alternately. The n+1 sealing ridges can be adjacent to the n ridges on the first surface of the second plate. Preferably, the n+1 sealing ridges and the n ridges in the first surface of the second plate can be arranged alternately.

[0047] The design of the base unit with its panels allows for easy assembly and disassembly. The panels can be joined using conventional methods such as screws, pins, welding, gluing, or clamping. If one or two panels of the base unit are damaged and / or need to be replaced for any reason, it is not necessary to dispose of and / or replace the entire base unit, but only the affected panels.

[0048] Alternatively, the basic body can be manufactured as a whole using a 3D printer.

[0049] Each pair of adjacent nozzle orifices can be equidistant from each other for each of the at least one pair of circumferential or quasi-circular channels. Additionally or alternatively, each nozzle orifice can have the same size and / or shape.

[0050] It is preferred that the base body be in the form of a vertical circular cylinder and that the at least one pair of circumferential or quasi-circular channels have a cross-section perpendicular to the surfaces of the base body, forming a circumference or arc of a circle. This configuration facilitates the connection of the spinneret to the external spinning mass lines for the first and second spinning masses, since conventional spinning mass lines are in the form of a circular cylinder. In this case, the first central supply bore and the second central supply bore can have the same diameter and shape as conventional spinning mass lines.

[0051] Optionally, any two adjacent first circumferential or quasi-circular channels can have the same distance between them, and / or any two adjacent second circumferential or quasi-circular channels can have the same distance between them.

[0052] According to the invention, a spinning process for producing bicomponent fiber filaments using such a spinneret is also specified.

[0053] The spinning process according to the invention comprises feeding a first spinning mass into a first circulating or quasi-circulating channel. The first spinning mass can comprise a first component of the bicomponent fiber filament. Furthermore, the spinning process according to the invention comprises feeding a second spinning mass into a second circulating or quasi-circulating channel. The second spinning mass can comprise a second component of the bicomponent fiber filament. The spinning process according to the invention further comprises extruding the first spinning mass and the second spinning mass through a plurality of die bores. The bicomponent fiber filaments produced by the spinneret have a side-by-side structure.

[0054] Preferably, the first component can comprise a first polymer and the second component a second polymer. The first and second polymers can differ chemically in their monomer composition. For example, the first polymer can be water-repellent and the second polymer water-absorbing.

[0055] Alternatively, the first polymer and the second polymer can have different configurations, degrees of crosslinking, or molar mass distributions while having the same monomer composition.

[0056] The first spinning mass may comprise a first spinning solution or a first spinning melt, and / or the second spinning mass may comprise a second spinning solution or a second spinning melt. Additionally or alternatively, the first spinning mass and / or the second spinning mass may contain additives, such as dyes or other (active or passive) substances in the first spinning solution and / or in the second spinning solution.

[0057] The first polymer can simultaneously be the second polymer. The first polymer and the second polymer can, for example, be dissolved in the same solvent, but have different concentrations and / or different degrees of polymerization and / or different viscosities.

[0058] The spinning nozzle according to the invention is also suitable for spinning melts. This requires that the melts are not too hot, the pressures not too high, and the nozzle bores are large.

[0059] According to the invention, a solution spinning process for producing bicomponent fiber filaments is also provided.

[0060] The solution spinning process according to the invention comprises feeding a first spinning solution into a first channel, wherein the first spinning solution comprises a first polymer dissolved in a solvent, feeding a second spinning solution into a second channel, wherein the second spinning solution comprises a second polymer dissolved in a solvent, and extruding the first spinning solution and the second spinning solution through at least one die bore, wherein the die bore opens the first channel and the second channel, and the first channel and the second channel converge before entering the die bore.

[0061] The first polymer and the second polymer can differ chemically in their monomer composition. For example, the first polymer can be water-repellent and the second polymer water-absorbing.

[0062] Alternatively, the first and second polymers can have different configurations, degrees of crosslinking, or molar mass distributions, even if they have the same monomer composition. In particular, the first polymer can simultaneously be the second polymer. For example, the first and second polymers can be dissolved in the same solvent but have different concentrations, degrees of polymerization, and / or viscosities.

[0063] The first spinning solution and / or the second spinning solution may contain additives such as dyes or other (active or passive) additives.

[0064] The invention will now be explained by way of example with reference to several figures. Identical reference numerals denote identical or corresponding features. The features described in the examples can also be implemented independently of the example and combined among the examples.

[0065] It shows: Fig. 1a an exploded view of a particularly advantageous embodiment of a spinneret according to the invention with a first, a second and a third plate; Fig. 1b the in Fig. 1a The spinneret shown is in an operating state; Fig. 2 shows a side view AA' of the first plate and the second plate. Fig. 1a ; Fig. 3 a perspective view of the in Fig. 1a, Fig. 1b and Fig. 2 second plate shown; Fig. 4 a side view AA' of the in Fig. 1b spinneret shown; Fig. 5a a top view of the in Fig.1a, Fig. 1b , Fig. 2 , Fig.3 and Fig. 4 second plate shown; Fig. 5 top view of the legs in Fig. 1a, Fig. 1b and Fig. 4 third plate shown; Fig. 6 a schematic representation of a volume flow of the first and second spinning masses in the in Fig. 1b and Fig. 4 shown spinneret.

[0066] Fig. 1a shows an exploded view of a particularly advantageous embodiment of a spinneret according to the invention with a first plate 10, a second plate 30 and a third plate 50.

[0067] The first plate 10, the second plate 30, and the third plate 50 together form a basic body 100 of the spinneret, which here is designed in the form of a vertical circular cylinder. The basic body 100 has a first surface 100a and a second surface 100b opposite the first surface 100a.

[0068] Several nozzle bores 1 are arranged on the first surface 100a of the base body 100. Each nozzle bore 1 can have the same shape and size and differ from each other only in their position on the first surface 100a of the base body 100. The diameter of the nozzle bores 1 can be, for example, 0.08 mm. The nozzle bores 1 can form a predetermined pattern on the first surface 100a of the base body 100, such as three concentric rings.

[0069] For the mechanical connection of the three plates 10, 30 and 50, the base body 100 has five blind bores 5.

[0070] The blind bores 5 penetrate the first plate 10 and the second plate 30 completely, as shown in Fig. 2 and Fig. 4 shown, but not the third plate 50, as in Fig. 4 The blind holes 5 have a depth that is less than the total thickness of the base body 100, which is calculated by adding the thickness of the first plate 10, the thickness of the second plate 30, and the thickness of the third plate 50. The five blind holes 5 extend perpendicular to the surfaces 100a, 100b of the base body 100. One of the blind holes 5 can be located on the cylindrical axis of the base body 100 and be called the central blind hole 5, while the other four blind holes 5 can be equidistant from the central blind hole 5. For example, any two of the four blind holes 5 can be arranged in two mutually perpendicular diameter directions to increase the mechanical stability of the spinneret. In this case, any two of the four blind holes 5 are at their maximum distance from each other. The blind holes 5 can be threaded and / or conical or cylindrical.The blind holes 5 serve to fasten or lock the three plates 10, 30 and 50, for example by means of screws or pins. If the three plates 10, 30, 50 are assembled modularly in another way, e.g. by gluing or welding, the blind holes 5 are no longer necessary.

[0071] Fig. 1b shows the in Fig. 1a The depicted spinneret is shown in an operating state in which the first plate 10, the second plate 30, and the third plate 50 have been assembled modularly after five screws 6 have been screwed into the five blind holes 5. In the operating state, the second plate 30 is arranged as an intermediate plate below the first plate 10 and above the third plate 50.

[0072] Fig. 2 shows a side view AA' of the first plate 10 and the second plate 30. Fig. 1a .

[0073] The first plate 10 has the first surface 100a and a second surface 10b opposite the first surface 100a. The first surface of the first plate 10 is the first surface 100a of the base body 100.

[0074] The nozzle bores 1 are arranged on the first surface 100a of the first plate 10. Three circumferential recesses 16, 17, 18 extend from the second surface 10b of the first plate 10 to the first surface 100a of the first plate 10 and are open through the nozzle bores 1 to the first surface 100a of the first plate 10.

[0075] The three circumferential recesses 16, 17, 18 are arranged concentrically around the central blind bore 5. Each of the three circumferential recesses 16, 17, 18 has the same shape. For example, the three circumferential recesses 16, 17, 18 can be wedge-shaped in cross-section perpendicular to the first surface 100a and the second surface 10b of the first plate 10.

[0076] In the second surface 10b of the first plate 10, four or more circumferential sealing grooves 11a, 11b, 11c, 11d are arranged and adjoin the three circumferential recesses 16, 17, 18. Each of the four or more circumferential sealing grooves 11a, 11b, 11c, 11d has the same shape. For example, the four or more circumferential sealing grooves 11a, 11b, 11c, 11d can be triangular in cross-section perpendicular to the first surface 100a and the second surface 10b of the first plate 10. The maximum depth of the four or more circumferential sealing grooves 11a, 11b, 11c, 11d is less than the maximum depth of the three circumferential recesses 16, 17, 18. In addition, the four or more circumferential sealing grooves 11a, 11b, 11c, 11d and the three circumferential recesses 16, 17, 18 are arranged alternately in the second surface 10b of the first plate 10.

[0077] The second plate 30 has a first surface 30a and a second surface 30b opposite the first surface 30a. The first surface 30a of the second plate 30 faces the second surface 10b of the first plate 10.

[0078] Three circumferential ridges 32, 33, 34 are arranged on the first surface 30a of the second plate 30 and project from the first surface 30a of the second plate 30. Each of the three circumferential ridges 32, 33, 34 has the same shape. The three circumferential ridges 32, 33, 34 can be triangular in cross-section perpendicular to the first surface 30a and the second surface 30b of the second plate 30.

[0079] When the first plate 10 and the second plate 30 are joined, a ridge 32, 33, 34 of the second plate 30 engages in a recess 16, 17, 18 of the first plate 10 and is led to an upper end of the recess 16, 17, 18 of the first plate 10, whereby the recesses 16, 17, 18 of the first plate 10 are subdivided by the ridges 32, 33, 34 of the second plate 30 into three first compartments 16a, 17a, 18a and three second compartments 16b, 17b, 18b.

[0080] The first surface 30a of the second plate 30 features three pairs of circumferential depressions 32a, 34a, 32b, 34b, 32c, 34c, each with three first depressions 32a, 32b, 32c and three second depressions 34a, 34b, 34c. These three pairs of circumferential depressions 32a, 34a, 32b, 34b, 32c, 34c are separated by three ridges 32, 33, 34 and adjoin these ridges. The three pairs of circumferential depressions 32a, 34a, 32b, 34b, 32c, 34c and the three ridges 32, 33, 34 are arranged alternately in the first surface 30a of the second plate 30. Each of the circumferential depressions 32a, 32b, 32c, 34a, 34b, 34c has the same shape. The circumferential depressions 32a, 34a, 32b, 34b, 32c, 34c can be semicircular in cross-section perpendicular to the first surface 30a and the second surface 30b of the second plate 30.

[0081] In projection of the first plate 10 onto the second plate 30, a width B1 of the three recesses 16, 17, 18 on the second surface 10b of the first plate 10 is equal to a width B2+B3+B4, which results from adding a width B2 of the first depressions 32a, 32b, 32c, a width B3 of the three ridges 32, 33, 34, and a width B4 of the second depressions 34a, 34b, 34c. If the first plate 10 and the second plate 20 are constructed modularly, then the first three compartments 16a, 17a, 18a of the first plate 10 and the first three depressions 32a, 32b, 32c of the second plate 30 form the first three circumferential channels 2a (16a+32a), 2b (17a+32b), 2c (18a+32c) for the first spinning mass, and the second three compartments 16b, 17b, 18b of the first plate 10 and the second three depressions 34a, 34b, 34c of the second plate 30 form the second three circumferential channels 4a (16b+34a), 4b (17b+34b), 4c (18b+34c).Any two adjacent first circumferential channels, i.e. 2a-2b, 2b-2c, are equidistant from each other, and any two adjacent second circumferential channels 4a-4b, 4b-4c are equidistant from each other.

[0082] It is preferred that each pair of adjacent nozzle bores 1 for each pair of circumferential channels 2a, 4a, 2b, 4b, 2c, 4c have the same distance from each other.

[0083] For the first three circulating channels 2a, 2b, 2c, the second plate 30 has a total of six first parallel distribution channels 12a, 12b, 12c, 12d, 12e and 12f. Due to the side view AA', only three first distribution channels 12a, 12b, 12c are visible in Fig. 2 visible. The three other first distribution channels 12d, 12e, 12f in side view BB' are in Fig. 3 , Fig. 5a and Fig. 6 to see.

[0084] The first three distribution channels 12a, 12b, 12c are arranged below the first three recesses 32a, 32b, 32c and are in fluid communication with the first three recesses 32a, 32b, 32c. Preferably, the width of the first three distribution channels 12a, 12b, 12c is equal to the width B2 of the first three recesses 32a, 32b, 32c. Alternatively, the width of the first three distribution channels 12a, 12b, 12c can be smaller than the width B2 of the first recesses 32a, 32b, 32c.

[0085] Fig. 3 and Fig. 5a Figure 1 shows the three first distribution channels 12d, 12e, 12f, which are arranged below the three first recesses 32c, 32b, 32a and are in fluid communication with the three first recesses 32c, 32b, 32a. Preferably, the width of the three first distribution channels 12d, 12e, 12f is equal to the width B2 of the first recesses 32a, 32b, 32c. Alternatively, the width of the three first distribution channels 12d, 12e, 12f can be smaller than the width B2 of the first recesses 32c, 32b, 32a.

[0086] The first six parallel distribution channels 12a, 12b, 12c, 12d, 12e, 12f can be arranged perpendicular to the surfaces 30a, 30b of the second plate 20, but preferably not perpendicular to the surfaces 30a, 30b of the second plate 20, as shown in Fig. 6 depicted.

[0087] Similarly, the second plate 30 has a total of six second parallel distribution channels 14a, 14b, 14c, 14d, 14e and 14f for the three second circumferential channels 4a, 4b, 4c, whereby, due to the side view AA', only three second distribution channels 14d, 14e, 14f are visible in Fig. 2 are visible. The three other second distribution channels 14a, 14b, 14c in side view BB' are in Fig. 3 , Fig. 5a and Fig. 6 to see.

[0088] The three second distribution channels 14d, 14e, 14f are arranged below the three second depressions 34c, 34b, 34a and are in fluid communication with the three second depressions 34c, 34b, 34a. Fig. 3 and Fig. 5a show that the three further second distribution channels 14a, 14b, 14c are arranged below the three second depressions 34a, 34b, 34c and are in fluid communication with the three second depressions 34a, 34b, 34c.

[0089] The six second parallel distribution channels 14a, 14b, 14c, 14d, 14e, 14f can be arranged perpendicular to the surfaces 30a, 30b of the second plate 20, but preferably not perpendicular to the surfaces 30a, 30b of the second plate 20, as shown in Fig. 6 shown. Preferably, the width of the second distribution channels 14a, 14b, 14c, 14d, 14e, 14f is equal to the width B4 of the second depressions 34a, 34b, 34c. Alternatively, the width of the second distribution channels 14a, 14b, 14c, 14d, 14e, 14f can be smaller than the width B4 of the three second depressions 34a, 34b, 34c.

[0090] In the second surface 30b of the second plate 30, two first recesses 27a; 28a and two second recesses 47a, 48a are formed. Due to the side view AA', only one first recess 27a and one second recess 48a are visible in Fig. 2 visible. The first recess 27a is open up to the first three distribution channels 12a, 12b, 12c. The second recess 48a is open up to the second three distribution channels 14d, 14e, 14f.

[0091] Fig. 5a Figure 1 shows the other second recess 47a and the other first recess 28a in side view B-B'. The first recess 28a is open to the three further first distribution channels 12d, 12e, 12f, and the second recess 47a is open to the three further second distribution channels 14a, 14b, 14c. The first recesses 27a, 28a and the second recesses 47a, 48a can have the same shape and size. For example, the recesses 27a, 28a, 47a, 48a can be in the shape of an elliptical cylinder.

[0092] Since the first recesses 27a, 28a and the second recesses 47a, 48a open into the respective distribution channels 12a, 12b, 12c, 12d, 12e, 12f and 14a, 14b, 14c, 14d, 14e, 14f, the first recesses 27a, 28a can be considered as the first distributor 27, 28 for distributing the first spinning mass and the second recesses 47a, 48a as the second distributor 47, 48 for distributing the second spinning mass.

[0093] For the four or more circumferential sealing grooves 11a, 11b, 11c, 11d in the second surface 10b of the first plate 10, four or more circumferential sealing ridges 13a, 13b, 13c, 13d are arranged on the first surface 30a of the second plate 30 and project from the first surface 30a of the second plate 30. The maximum height of the four or more circumferential sealing ridges 13a, 13b, 13c, 13d is less than the maximum height of the three circumferential ridges 32, 33, 34. The four or more circumferential sealing ridges 13a, 13b, 13c, 13d have the same shape. For example, the four or more circumferential sealing ridges 13a, 13b, 13c, 13d can be triangular in cross-section perpendicular to the first surface 30a and the second surface 30b of the second plate 30.When the first plate 10 and the second plate 30 are joined together, one of the four or more circumferential sealing ridges 13a, 13b, 13c, 13d of the second plate 30 engages in each of the four or more circumferential sealing grooves 11a, 11b, 11c, 11d of the first plate 10, so that one of the four or more circumferential sealing ridges 13a, 13b, 13c, 13d touches as much of the inner wall as possible of each of the four or more circumferential sealing grooves 11a, 11b, 11c, 11d of the first plate 10.

[0094] Fig. 3 shows a perspective view of the in Fig. 1a, Fig. 1b and Fig. 2 shown second plate 30.

[0095] The second plate 30 has, from its outermost circumference to the central blind bore 5, in this order: the circumferential sealing ridge 13a, the first circumferential recess 32a, the circumferential ridge 32, the second circumferential recess 34a, the circumferential sealing ridge 13b, the first circumferential recess 32b, the circumferential ridge 33, the second circumferential recess 34b, the circumferential sealing ridge 13c, the first circumferential recess 32c, the circumferential ridge 34, the second circumferential recess 34c, and the circumferential sealing ridge 13d. They are all arranged concentrically with respect to the central blind bore 5. The four other blind bores 5 can be arranged between the outermost circumference and the circumferential sealing ridge 13a.

[0096] In Figuren 2 and 4Two of the four blind bores 5 are arranged in the diameter direction AA'. This representation is schematic. It is preferred that two of the four blind bores 5 are arranged in each of two mutually perpendicular diameter directions, which are different from the diameter directions AA' and BB', as shown in Figuren 3 , 5a und 5b shown. In this case, each pair of the four blind bores 5 has the maximum distance between them.

[0097] The three points where the three first distribution channels 12a, 12b, 12c intersect with the three first depressions 32a, 32b, 32c, and the three points where the three second distribution channels 14d, 14e, 14f intersect with the three second depressions 34c, 34b, 34a, are aligned in the diameter direction AA'. The three points where the three further first distribution channels 12d, 12d, 12f intersect with the three first depressions 32c, 32b, 32a, and the three points where the three further second distribution channels 14a, 14b, 14c intersect with the three second depressions 34a, 34b, 34c, are aligned in the diameter direction BB'.

[0098] Fig. 4 shows a side view AA' of the in Fig. 1b The spinneret shown. The spinneret comprises the same first plate 10 after. Fig. 1a and Fig. 2 , the same second record 30 after Fig. 1a , Fig. 2 and Fig. 3 , and the same third record 50 after Fig. 1a .

[0099] The third plate 50 has a first surface 50a and a second surface 100b opposite the first surface 50a. The second surface of the third plate 50 is the second surface 100b of the base body 100. The first surface 50a of the third plate 50 faces the second surface 30b of the second plate 30.

[0100] In the first surface 50a of the third plate 50, a first non-circular depression 24a and a second non-circular depression 44a are formed. The first circumferential depression 24a and the second non-circular depression 44a can be semicircular in cross-section perpendicular to the first surface 50a and the second surface 100b of the third plate 50. The maximum depth of the first non-circular depression 24a and the maximum depth of the second non-circular depression 44a are equal, so that the first non-circular depression 24a and the second non-circular depression 44a are arranged in the same plane E within the base body 100, which is parallel to the two surfaces 100a, 100b of the base body 100. The width B5 of the first non-circular depression 24a and the width B6 of the second non-circular depression 44a can be equal.A width B7 of the first recesses 27a, 28a of the second plate 30 can be greater than the width B5 of the first non-circular recess 24a and / or a width B8 of the second recesses 47a, 48a of the second plate 30 can be greater than the width B6 of the second non-circular recess 44a.

[0101] The third plate 50 comprises a first central supply bore 22, adjacent to the first non-circular depression 24a and extending from there to the second surface 100b of the third plate 50, and a second central supply bore 42, adjacent to the second non-circular depression 44a and extending from there to the second surface 100b of the third plate 50. The first central supply bore 22 and the second central supply bore 42 may be of the same size and shape or structure.

[0102] The first central supply bore 22 can be divided into an upper section and a lower section. The upper section of the first central supply bore 22 adjoins the first non-circular recess 24a and has the same width B5 as the width B5 of the first non-circular recess 24a. The lower section of the first central supply bore 22 adjoins the upper section of the first central supply bore 22 and extends to the second surface 100b of the third plate 50. Preferably, the lower section of the first central supply bore 22 can have a variable width greater than the width B5. Particularly preferably, the lower section of the first central supply bore 22 can have a predetermined shape and size, so that the lower section of the first central supply bore 22 can interact with a commercially available spinning mass conduit for the first spinning mass, i.e.,h. can be specifically adapted to the shape and size of the spinning mass conduit for the first spinning mass.

[0103] The second central supply bore 42 can also be subdivided into an upper section and a lower section. The upper section of the second central supply bore 42 adjoins the second non-circular recess 44a and has the same width B6 as the width B6 of the second non-circular recess 44a. The lower section of the second central supply bore 42 adjoins the upper section of the second central supply bore 42 and extends to the second surface 100b of the third plate 50. Preferably, the lower section of the second central supply bore 42 can have a variable width that is greater than the width B6.Particularly preferably, the lower section of the second central supply bore 42 can have a predetermined shape and size, so that the lower section of the second central supply bore 42 can interact with a commercially available spinning mass conduit for the second spinning mass, i.e., can be specifically adapted to the shape and size of the spinning mass conduit for the second spinning mass.

[0104] Since the first non-circulating depression 24a lies between the first central supply bore 22 of the third plate 50 and the first recesses 27a, 28a of the second plate 30, the first non-circulating depression 24a can be called the first non-circulating intermediate channel 24. Similarly, the second non-circulating depression 44a lies between the second central supply bore 42 of the third plate 50 and the second recesses 47a, 48a of the second plate 30, and is referred to as the second non-circulating intermediate channel 44.

[0105] Fig. 5a shows a top view of the in Fig.1a, Fig. 1b , Fig. 2 , Fig.3 and Fig. 4 shown second plate 30 from the second surface 30b of the second plate 30.

[0106] It should be noted that, unlike the ones in Figuren 2 and 4The two blind bores 5 shown, which are arranged in the diameter direction AA', each of the four blind bores 5 are arranged in two mutually perpendicular diameter directions which differ from the diameter directions AA' and BB'.

[0107] Along the diameter direction AA', the first recess 27a, which is in fluid communication with the three first distribution channels 12a, 12b, 12c, and the second recess 48a, which is in fluid communication with the three second distribution channels 14d, 14e, 14f, are arranged. Every two adjacent first distribution channels 12a-12b, 12b-12c are equidistant, and every two adjacent second distribution channels 14d-14e, 14e-14f are equidistant. The distance between two adjacent first distribution channels 12a-12b, 12b-12c is equal to the distance between two adjacent second distribution channels 14d-14e, 14e-14f. The first recess 27a and the second recess 48a are arranged symmetrically to the central blind bore 5 on both sides of the diameter direction AA'.

[0108] Along the diameter direction BB', the second recess 47a, which is in fluid communication with the three second distribution channels 14a, 14b, 14c, and the first recess 28a, which is in fluid communication with the three first distribution channels 12d, 12e, and 12f, are arranged. Each pair of adjacent second distribution channels 14a-14b, 14b-14c is equidistant, as is each pair of adjacent first distribution channels 12d-12e, 12e-12f. The distance between two adjacent second distribution channels 14a-14b, 14b-14c is equal to the distance between two adjacent first distribution channels 12d-12e, 12e-12f. The second recess 47a and the first recess 28a are arranged symmetrically to the central blind bore 5 on both sides of the diameter direction BB'.

[0109] The outermost first distribution channels 12a, 12f are assigned to the outermost first depression 32a. The middle first distribution channels 12b, 12e are assigned to the middle first depression 32b. The innermost first distribution channels 12c, 12d are assigned to the innermost first depression 32c. The outermost second distribution channels 14a, 14f are assigned to the outermost second depression 34a. The middle second distribution channels 14b, 14e are assigned to the middle second depression 34b. The innermost second distribution channels 14c, 14d are assigned to the innermost second depression 34c.

[0110] The outermost first distribution channels 12a, 12f are farther from the central blind bore 5 than the outermost second distribution channels 14a, 14f. The middle first distribution channels 12b, 12e are farther from the central blind bore 5 than the middle second distribution channels 14b, 14e. The innermost first distribution channels 12c, 12d are farther from the central blind bore 5 than the innermost second distribution channels 14c, 14d.

[0111] The outermost first depression 32a, the outermost second depression 34a, the middle first depression 32b, the middle second depression 34b, the innermost first depression 32c, and the innermost second depression 34c are arranged alternately in the second plate 30.

[0112] Fig. 5b shows a top view of the in Fig. 1a, Fig. 1b and Fig. 4 shown third plate 50 from the first surface 50 of the third plate 50.

[0113] Here, the first intermediate channel 24, i.e., the first non-circular depression 24a, and the second intermediate channel 44, i.e., the second non-circular depression 44a, are formed in the first surface 50a of the third plate 50 as circular segments in cross-section parallel to the first surface 50a and the second surface 100b of the third plate 50. The circular segment of the first non-circular depression 24a is further from the central blind bore 5 than the circular segment of the second non-circular depression 44a. The length of the circular segment of the first non-circular depression 24a is greater than the length of the circular segment of the second non-circular depression 44a.

[0114] The first non-circular depression 24a has a first end 25 and a second end 26. The second non-circular depression 44a has a first end 45 and a second end 46. The first central supply borehole 22 is located at the midpoint 21 of the two ends 25, 26 of the first non-circular depression 24a, which is the midpoint of the length of the circular segment. The second central supply borehole 42 is located at the midpoint 41 of the two ends 45, 46 of the second non-circular depression 44a, which is the midpoint of the length of this circular segment.

[0115] Fig. 5b in combination with Fig. 5a as well as Fig. 6 shows that the first end 25 of the first non-circular depression 24a is in fluid contact with the first recess 27a of the second surface 30b of the second plate 30, while the second end 26 of the first non-circular depression 24a is in fluid contact with the first recess 28a of the second surface 30b of the second plate 30.

[0116] Fig. 5b in combination with Fig. 5a as well as Fig. 6 further shows that the first end 45 of the second non-circular depression 44a is in fluid communication with the second recess 47a of the second surface 30b of the second plate 30, while the second end 46 of the second non-circular depression 44a is in fluid communication with the second recess 48a of the second surface 30b of the second plate 30.

[0117] Fig. 6 shows a schematic representation of a volume flow of the first spinning mass and the second spinning mass in the in Fig. 1b and Fig. 4shown spinneret.

[0118] When the first spinning mass, in particular the first spinning solution, is introduced from the outside into the first central supply bore 22, the first spinning solution initially reaches the center 21 of the first intermediate channel 24. At the center 21, the first spinning solution divides into two parts, with a first part of the first spinning solution flowing to the first end 25 of the first intermediate channel 24 and a second part of the first spinning solution flowing to the second end 26 of the first intermediate channel 24. At the first end 25 of the first intermediate channel 24, the first part of the first spinning solution flows into the first distributor 27 and is distributed by the first distributor 27 into the three first distribution channels 12a, 12b, 12c. Through the first three distribution channels 12a, 12b, 12c, the first part of the first spinning solution reaches the first three wells 32a, 32b, 32c and subsequently the first three compartments 16a, 17a, 18a, i.e. the first three channels 2a, 2b, 2c.At the second end 26 of the first intermediate channel 24, the second part of the first spinning solution flows into the first distributor 28 and is distributed by the first distributor 28 into the first three distribution channels 12d, 12e, 12f. Through the first three distribution channels 12d, 12e, 12f, the second part of the first spinning solution reaches the first three wells 32c, 32b, 32a and subsequently the first three compartments 16a, 17a, 18a, i.e., the first three channels 2a, 2b, 2c.

[0119] When the second spinning mass, in particular the second spinning solution, is introduced from the outside into the second central supply bore 42, the second spinning solution first reaches the center 41 of the second intermediate channel 44. There, the second spinning solution divides into two parts, with a first part of the second spinning solution flowing to the first end 45 of the second intermediate channel 44 and a second part of the second spinning solution flowing to the second end 46 of the second intermediate channel 44. At the first end 45 of the second intermediate channel 44, the first part of the second spinning solution flows into the second distributor 47 and is distributed by the second distributor 47 into the three second distribution channels 14a, 14b, 14c. Through the three second distribution channels 14a, 14b, 14c, the first part of the second spinning solution reaches the three second wells 34a, 34b, 34c and subsequently the three second compartments 16b, 17b, 18b, i.e. the three second channels 4a, 4b, 4c.At the second end 46 of the second intermediate channel 44, the second part of the second spinning solution flows into the second distributor 48 and is distributed by the second distributor 48 into the three second distribution channels 14d, 14e, 14f. Through the three second distribution channels 14d, 14e, 14f, the second part of the second spinning solution reaches the three second wells 34c, 34b, 34a and subsequently the three second compartments 16b, 17b, 18b, i.e., the three second channels 4a, 4b, 4c.

[0120] In this way, the first spinning solution and the second spinning solution are extruded through each of the nozzle orifices 1 from the spinneret. The bicomponent fiber filaments produced by the spinneret have a side-by-side structure. List of reference symbols

[0121] Nozzle bores 1 Circumferential or quasi-circumferential channels 2a, 4a, 2b, 4b, 2c, 4c First channel 2a, 2b, 2c Second channel 4a, 4b, 4c Blind bores 5 Screws 6 First plate 10 Second surface 10b of the first plate 10 Sealing groove 11a, 11b, 11c, 11d of the first plate 10 First distribution channels 12a, 12b, 12c, 12d, 12e, 12f Sealing ridge 13a, 13b, 13c, 13d of a second plate 30 Second distribution channels 14a, 14b, 14c, 14d, 14e, 14f Recess 16, 17, 18 of the first plate 10 Width B1 of the recess 16, 17, 18 First compartment 16a, 17a, 18a Second compartment 16b, 17b, 18b First supply connection 20 First central supply bore 22 First non-circular intermediate channel 24 First non-circular depression 24a of a first surface 50a of a third plate 50 One width B5 of the first non-circular depression 24a First end 25 of the first intermediate channel 24 Second end 26 of the first intermediate channel 24 First distributors 27, 28 of the first intermediate channel 24 First recesses 27a,28a of a second surface 30b of a second plate 30 Width B7 of the first recesses 27a, 28a Center 21 of the first intermediate channel 24 Second plate 30 First surface 30a of the second plate 30 Second surface 30b of the second plate 30 Ridge 32, 33, 34 of the second plate 30 Width B3 of the ridge 32, 33, 34 Recesses 32a, 34a, 32b, 34b, 32c, 34c of the second plate 30 First recess 32a, 32b, 32c Width B2 of the first recess 32a, 32b, 32c Second recess 34a, 34b, 34c Width B4 of the second recess 34a, 34b, 34c Second supply connection 40 Second central supply bore 42 Second non-circular intermediate channel 44 Second non-circular depression 44a of a first surface 50a of a third plate 50 B6 of the second non-circular depression 44a First end 45 of the second intermediate channel 44 Second end 46 of the second intermediate channel 44 Second distributor 47,48 of the second intermediate channel 44 Second recesses 47a; 48a of the second surface 30b of the second plate 30 Width B8 of the second recesses 47a; 48a Center 41 of the second intermediate channel 44 Third plate 50 First surface 50a of the third plate 50 Base body 100 First surface of the base body 100a Second surface of the base body 100a Plane E,

Claims

1. Spindle for producing bicomponent fiber filaments, comprising: - a base body (100) with a first surface (100a) and a second surface (100b) opposite the first surface (100a); - at least one pair of circumferential or quasi-circumferential channels (2a, 4a, 2b, 4b, 2c, 4c) with at least one first channel (2a, 2b, 2c) for supplying a first spinning mass and at least one second channel (4a, 4b, 4c) for supplying a second spinning mass, wherein the at least first channel (2a, 2b, 2c) and the at least second channel (4a, 4b, 4c) are located separately below the first surface (100a); - a plurality of nozzle bores (1) on the first surface (100a), wherein each of the plurality of nozzle bores (1) opens the at least first channel (2a, 2b, 2c) and opens the at least second channel (4a, 4b, 4c) to the first surface (100a), and the at least first channel (2a, 2b, 2c) and the at least second channel (4a, 4b,4c) converge before entering the plurality of nozzle bores (1), wherein the at least first channel (2a, 2b, 2c) has at least one first supply port (20) for supplying the at least first channel (2a, 2b, 2c) with the first spinning mass and the at least second channel (4a, 4b, 4c) has at least one second supply port (40) for supplying the at least second channel (4a, 4b, 4c) with the second spinning mass, and wherein the at least first supply port (20) and the at least second supply port (40) are each led from the at least first channel (2a, 2b, 2c) and the at least second channel (4a, 4b, 4c) to the second surface (100b).

2. Spindle nozzle according to claim 1, comprising n pairs of circumferential or quasi-circular channels (2a, 4a; 2b, 4b; 2c, 4c), wherein n is an integer and greater than 1, preferably 2, 3, 4 or 5, wherein the n pairs of circumferential or quasi-circular channels (2a, 4a; 2b, 4b; 2c, 4c) are arranged concentrically, wherein the at least first supply port (20) has at least n first distribution channels (12a; 12b; 12c), and at least one first distribution channel (12a; 12b; 12c) is configured to supply each of the n first circumferential or quasi-circular channels (2a; 2b; 2c) with the first spinning mass, and wherein the at least second supply port (40) has at least n second distribution channels (14a; 14b; 14c), and at least one second distribution channel (14a; 14b; 14c) is provided to supply each of the n second circulating or quasi-circulating channels (4a; 4b; 4c) with the second spinning mass.

3. Spindle nozzle according to claim 2, wherein the at least first supply port (20) has a first central supply bore (22), and the first central supply bore (22) is configured to supply the n first distribution channels (12a; 12b; 12c) with the first spinning mass, and wherein the at least second supply port (40) has a second central supply bore (42), and the second central supply bore (42) is configured to supply the n second distribution channels (14a; 14b; 14c) with the second spinning mass, wherein in particular the at least first supply port (20) has at least or exactly 2n first distribution channels (12a; 12b; 12c; 12d; 12e; 12f), wherein at least or exactly two first distribution channels (12a, 12f; 12b, 12e; 12c, 12d) are configured to supply each of the n first circumferential or quasi-circular channels (2a; 2b;2c) to supply with the first spinning mass, and wherein the at least second supply connection (40) has at least or exactly 2n second distribution channels (14a; 14b; 14c; 14d; 14e; 14f), wherein at least or exactly two second distribution channels (14a, 14f; 14b, 14e; 14c, 14d) are each provided to supply each of the n second circulating or quasi-circulating channels (4a; 4b; 4c) with the second spinning mass.; 4. Spindle nozzle according to the preceding claim, wherein the first supply port (20) has a first non-circulating intermediate channel (24), and the first intermediate channel (24) is arranged below the 2n first distribution channels (12a; 12b; 12c; 12d; 12e; 12f) and is in fluid communication with the 2n first distribution channels (12a; 12b; 12c; 12d; 12e; 12f), wherein the n first distribution channels (12a; 12b; 12c) are arranged at a first end (25) of the first intermediate channel (24) and the further n first distribution channels (12d; 12e; 12f) are arranged at a second end (26) of the first intermediate channel (24), wherein the second supply port (40) has a second non-circulating intermediate channel (44), and the second intermediate channel (44) is arranged below the 2n second distribution channels (14a; 14b; 14c; 14d; 14e; 14f) and is in fluid communication with the 2n second distribution channels (14a; 14b; 14c; 14d; 14e; 14f), and wherein the n second distribution channels (14a; 14b;14c) at a first end (45) of the second intermediate channel (44) and the further n second distribution channels (14d; 14e; 14f) are arranged at a second end (46) of the second intermediate channel (44), wherein in particular the first intermediate channel (24) is formed in the form of a circular segment and / or the first intermediate channel (24) is arranged parallel to the two surfaces (100a; 100b) of the base body (100), and wherein the second intermediate channel (44) is formed in the form of a circular segment and / or the second intermediate channel (44) is arranged parallel to the two surfaces (100a; 100b) of the base body (100).; 5. Spindle nozzle according to the preceding claim, wherein the first intermediate channel (24) has a first distributor (27; 28) at each of the two ends (25; 26) of the first intermediate channel (24), and the first spinning mass from the first intermediate channel (24) is distributable through the two first distributors (27; 28) into each of the 2n first distribution channels (12a; 12b; 12c; 12d; 12e; 12f), and wherein the second intermediate channel (44) has a second distributor (47; 48) at each of the two ends (45; 46) of the second intermediate channel (44), and the second spinning mass from the second intermediate channel (44) is distributable through the two second distributors (47; 48) into each of the 2n second distribution channels (14a; 14b; 14c; 14d; 14e; 14f). is.

6. Spindle nozzle according to one of claims 4 to 5, wherein the first central supply bore (22) is arranged in the middle (21) between the two ends (25; 26) of the first intermediate channel (24), and the second central supply bore (42) is arranged in the middle (41) between the two ends (45; 46) of the second intermediate channel (44), and / or the second intermediate channel (44) is arranged in the same plane (E) within the base body (100) which is parallel to the two surfaces (100a; 100b) of the base body (100).

7. Spindle nozzle according to one of the preceding claims, wherein the first distribution channels (12a; 12b; 12c; 12d; 12e; 12f) are arranged parallel to each other and the second distribution channels (14a; 14b; 14c; 14d; 14e; 14f) are arranged parallel to each other, and wherein the first distribution channels (12a; 12b; 12c; 12d; 12e; 12f) and the second distribution channels (14a; 14b; 14c; 14d; 14e; 14f) are not arranged parallel to each other.

8. Spindle nozzle according to one of the preceding claims, wherein the base body (100) is modular and comprises a first plate (10), and the first plate (10) has the first surface (100a) and a second surface (10b) opposite the first surface (100a), wherein the nozzle bores (1) are arranged on the first surface (100a) of the first plate (10), wherein at least one circumferential or quasi-circumferential recess (16, 17, 18) extends from the second surface (10b) of the first plate (10) to the first surface (100a) of the first plate (10) and is open through the plurality of nozzle bores (1) to the first surface (100a) of the first plate (10), wherein the base body (100) comprises a second plate (30), and the second plate (30) is arranged below the first plate (10) in an operating state.wherein the second plate (30) comprises a first surface (30a) and a second surface (30b) opposite the first surface (30a), and the first surface (30a) of the second plate (30) faces the second surface (30b) of the first plate (10), wherein at least one circumferential or quasi-circumferential ridge (32, 33, 34) is arranged on the first surface (30a) of the second plate (30) and projects from the first surface (30a) of the second plate (30), wherein each ridge (32, 33, 34) of the second plate (30) engages in a recess (16, 17, 18) of the first plate (10) and is led to an upper termination of the recess (16, 17, 18) of the first plate (10), thereby forming a first compartment (16a, 17a, 18a) and a second compartment (16b, 17b, 18b) is subdivided, wherein at least one pair of circumferential or quasi-circumferential depressions (32a, 34a; 32b, 34b; 32c,34c) with a first depression (32a, 32b, 32c) and a second depression (34a, 34b, 34c) formed in the first surface (30a) of the second plate (30) and separated by the ridge (32, 33, 34), and adjoining the ridge (32, 33, 34), wherein the at least first channel (2a, 2b, 2c) of the at least one pair of circumferential or quasi-circumferential channels (2a, 4a; 2b, 4b; 2c, 4c) is formed by the first compartment (16a, 17a, 18a) and the first depression (32a, 32b, 32c), and the at least second channel (4a, 4b, 4c) of the at least one pair of circumferential or quasi-circumferential channels (2a, 4a; 2b, 4b; 2c, 4c) is formed by the second compartment (16b, 17b, 18b) and the second depression (34a, 34b, 34c).

9. Spindle nozzle according to the preceding claim, wherein, in projection of the first plate (10) onto the second plate (30), a width (B1) of the recess (16, 17, 18) on the second surface (10b) of the first plate (10) is equal to a width (B2+B3+B4) resulting from the addition of a width (B2) of the first depression (32a, 32b, 32c), a width (B3) of the ridge (32, 33, 34), and a width (B4) of the second depression (34a, 34b, 34c).

10. Spindle nozzle according to one of the two preceding claims, wherein the first plate (10) has n circumferential or quasi-circumferential recesses (16; 17; 18), and n is an integer and greater than 1, preferably 2, 3, 4 or 5, wherein the n circumferential or quasi-circumferential recesses (16; 17; 18) are arranged concentrically, wherein the second plate (30) has n circumferential or quasi-circumferential ridges (32; 33; 34) and n pairs of circumferential or quasi-circumferential depressions (32a, 34a; 32b, 34b; 32c, 34c), wherein the second plate (30) has at least n first distribution channels (12a; 12b; 12c), and at least one first distribution channel (12a; 12b; 12c) is located below each of the is arranged in the first n depressions (32a; 32b; 32c) and is in fluid communication with each of the first n depressions (32a; 32b; 32c), and wherein the second plate (30) has at least n second distribution channels (14a; 14b;14c), and at least one second distribution channel (14a; 14b; 14c) is arranged below each of the n second recesses (34a; 34b; 34c) and is in fluid communication with each of the n second recesses (34a; 34b; 34c), wherein in particular the second plate (30) has 2n first distribution channels (12a; 12b; 12c; 12d; 12e; 12f), and at least two first distribution channels (12a, 12f; 12b, 12e; 12c, 12d) are arranged below each of the n first recesses (32a; 32b; 32c) and are in fluid communication with each of the n first recesses (32a; 32b; 32c), and wherein the second plate (30) has 2n second distribution channels (14a; 14b; 14c; 14d; 14e; 14f) and each has at least two second distribution channels (14a, 14f; 14b, 14e; 14c, 14d) arranged below each of the n second recesses (34a; 34b; 34c) and are in fluid communication with each of the n second recesses (34a; 34b; 34c).

11. Spindle nozzle according to any one of claims 5 to 10, wherein the second plate (30) comprises the two first distributors (27; 28) and the two second distributors (47; 48), wherein each first distributor (27; 28) is formed by a first recess (27a; 28a) in the second surface (30b) of the second plate (30), each of which is open to the n first distribution channels (12a, 12b, 12c; 12d, 12e, 12f), wherein each second distributor (47; 48) is formed by a second recess (47a; 48a) in the second surface (30b) of the second plate (30), each of which is open to the n second distribution channels (14a, 14b, 14c; 14d, 14e, 14f), wherein in particular the spinneret comprises a third plate (50), and the third plate (50) is arranged below the second plate (30) in an operating state, the third plate (50) having a first surface (50a) and a second surface (100b) opposite the first surface (50a),the first surface (50a) of the third plate (50) faces the second surface (30b) of the second plate (30), wherein the first intermediate channel (24) is formed by a first non-circular depression (24a) in the first surface (50a) of the third plate (50), wherein the first end (25) of the first non-circular depression (24a) of the third plate (50) is in fluid communication with one of the first recesses (27a) of the second surface (30b) of the second plate (30), and the second end (26) of the first non-circular depression (24a) of the third plate (50) is in fluid communication with another of the first recesses (28a) of the second surface (30b) of the second plate (30), wherein the first central supply bore (22) adjoins the midpoint (21) between the two ends (25, 26) of the first non-circular depression (24a) and extends from there to the second surface (100b) of the third plate (50) extends,wherein the second intermediate channel (44) is formed by a second non-circular depression (44a) in the first surface (50a) of the third plate (50), wherein the first end (45) of the second non-circular depression (44a) of the third plate (50) is in fluid communication with one of the second recesses (47a) of the second surface (30b) of the second plate (30), and the second end (46) of the second non-circular depression (44a) of the third plate (50) is in fluid communication with another of the second recesses (48a) of the second surface (30b) of the second plate (30), wherein the second central supply bore (42) adjoins the midpoint (41) between the two ends (45, 46) of the second non-circular depression (44a) and extends from there to the second surface (100b) of the third plate (50).

12. Spindle nozzle according to any one of claims 8 to 11, wherein at least one circumferential or quasi-circumferential sealing groove (11a, 11b, 11c, 11d) is arranged in the second surface (10b) of the first plate (10), wherein at least one circumferential or quasi-circumferential sealing ridge (13a, 13b, 13c, 13d) is arranged on the first surface (30a) of the second plate (30) and projects from the first surface (30a) of the second plate (30), and wherein each sealing ridge (13a, 13b, 13c, 13d) of the second plate (30) engages in each sealing groove (11a, 11b, 11c, 11d) of the first plate (10), such that the sealing ridge (13) forms an inner wall of the sealing groove (11a, 11b, 11c, 11d), preferably each place of the inner wall of the sealing groove (11a, 11b, 11c, 11d), wherein in particular the first plate (10) has n+1 circumferential or quasi-circumferential sealing grooves (11a; 11b; 11c; 11d), wherein the n+1 circumferential or quasi-circumferential sealing grooves (11a; 11b; 11c;11d) adjacent to the n circumferential or quasi-circular recesses (16; 17; 18), wherein the n+1 circumferential or quasi-circular sealing grooves (11a; 11b; 11c; 11d) and the n circumferential or quasi-circular recesses (16; 17; 18) are arranged alternately in the second surface (10b) of the first plate (10).

13. Spindle nozzle according to one of the preceding claims, wherein each pair of adjacent nozzle bores of the plurality of nozzle bores (1) for each of the at least one pair of circumferential or quasi-circular channels (2a, 4a; 2b, 4b; 2c, 4c) are equidistant from each other and / or wherein each of the plurality of nozzle bores (1) is of the same size, the base body (100) is formed in the form of a vertical circular cylinder, and the at least one pair of circumferential or quasi-circular channels (2a, 4a; 2b, 4b; 2c, 4c) is formed in the form of a circular circumference or an arc, and / or each pair of adjacent first circumferential or quasi-circular channels (2a; 2b; 2c) are equidistant from each other, and / or each pair of adjacent second circumferential or quasi-circular channels (4a; 4b; 4c) are equidistant from each other.

14. Spinning process for producing bicomponent fiber filaments using a spinneret according to any of the preceding claims, comprising the following steps: - feeding a first spinning mass into a first channel (2a, 2b, 2c), wherein the first spinning mass comprises a first component of the bicomponent fiber filament, - feeding a second spinning mass into a second channel (4a, 4b, 4c), wherein the second spinning mass comprises a second component of the bicomponent fiber filament, - extruding the first spinning mass and the second spinning mass through the plurality of die bores (1).

15. The method of claim 14, wherein the first component comprises a first polymer and the second component comprises a second polymer, and wherein the two polymers differ chemically in their monomer composition or wherein the two polymers have different configurations, degrees of crosslinking or molar mass distributions while having the same monomer composition, wherein in particular the first polymer is water-repellent and the second polymer is water-absorbing, and / or the first spinning mass comprises a first spinning solution or a first spinning melt, and / or wherein the second spinning mass comprises a second spinning solution or a second spinning melt.

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