Spinning assembly

Abstract

The utility model discloses a spinneret assembly, which comprises a distribution plate and a spinneret plate provided with spinneret orifices, the distribution plate comprises a first runner used for simultaneously introducing a first component and a second component into the spinneret orifices, and a second runner used for introducing a third component into the spinneret orifices; the number of the first flow channels and the number of the second flow channels are respectively multiple, every two adjacent first flow channels are separated by one second flow channel, the multiple second flow channels are mutually separated or the axial leads of the second flow channels are mutually intersected at the same point, and the orthographic projection of the first flow channels and the orthographic projection of the second flow channels are all located in the orthographic projection range of inlets of the spinneret orifices; the spinneret assembly can continuously and stably eject composite fibers with normal sizes and specific structures on the basis of three components, and superfine fibers with at least one excellent effect in the aspects of elasticity, glossiness, strength such as tearing strength and the like can be obtained by removing single-component fibers in the composite fibers.

Description

Technical Field

[0001] The utility model relates to the technical field of spinning, in particular to a spinning assembly. Background Art

[0002] At present, the textile industry generally defines fibers with a single filament fineness of less than 0.44dtex as ultrafine fibers. The characteristics of ultrafine fibers mainly include soft and delicate feel and good flexibility. There are many methods for producing ultrafine fibers, such as direct spinning and bicomponent spinning. Direct spinning is relatively simple, but in actual application, it is very difficult to spin fibers below 0.44 dtex, and it is not easy to produce on a large scale. Bicomponent spinning is the method that is currently used and studied the most. It can be roughly divided into two categories: composite spinning and blended spinning. Among them, composite spinning is the most widely used. Its specific operation is to spin two or more fiber-forming polymers into composite fibers, and then dissolve and remove one component of the composite fiber to separate the components to obtain ultrafine fibers. For example, non-adhesive melt polyester and polyamide are made into composite fibers, and then the ultrafine fibers can be obtained after peeling. A common method is to first prepare island-in-the-sea fibers, in which one component is a dispersed phase (i.e., island component) and the other is a continuous phase (i.e., sea component). The island component is contained in the sea component in the shape of ultrafine fibers. The cross-section of the ultrafine fibers is distributed in the shape of islands, and its long axis is parallel to the composite fiber. The sea component is dissolved and removed to obtain ultrafine fibers generated by the island component. However, the currently prepared ultrafine fibers still have defects such as insufficient elasticity, poor gloss, and relatively poor strength such as tear strength, which limits their applicability. Utility Model Content

[0003] The purpose of the utility model is to overcome one or more deficiencies in the prior art and to provide a novel spinning assembly that can be used for preparing composite fibers and ultrafine fibers.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A spinneret assembly comprises a distribution plate and a spinneret formed with a spinneret hole, the distribution plate comprising a first flow channel for simultaneously introducing a first component and a second component into the spinneret hole, and a second flow channel for introducing a third component into the spinneret hole; the first flow channel and the second flow channel are respectively provided in plurality, and two adjacent first flow channels are separated by one second flow channel, the plurality of second flow channels are separated from each other or their respective axis lines intersect at the same point, and the orthographic projections of the first flow channel and the second flow channel are both located within the orthographic projection range of the entrance of the spinneret hole.

[0006] In some embodiments of the present invention, the outlets of the plurality of first flow channels are respectively distributed on the circumference of a first circle, and the inlets of the plurality of second flow channels are respectively distributed on the circumference of a second circle;

[0007] The center of the first circle coincides with the center of the second circle, or a straight line between the two center points is parallel to the axis of the first flow channel.

[0008] Furthermore, the diameter of the first circle is 1 / 3-3 / 4 of the diameter of the second circle.

[0009] In some embodiments of the present invention, a cross section of the first flow channel perpendicular to the length direction is circular.

[0010] In some embodiments of the present invention, a cross section of the second flow channel perpendicular to the length direction is square.

[0011] In some embodiments of the present invention, the axis of the first flow channel is perpendicular to the axis of the second flow channel.

[0012] In some embodiments of the present invention, a fan-shaped area is formed between two adjacent second flow channels, and the first flow channel is located at the centroid of the fan-shaped area.

[0013] In some embodiments of the present invention, the cross section of the spinneret hole perpendicular to the length direction is circular.

[0014] In some embodiments of the present invention, the distribution plate further includes a third flow channel, which surrounds the outer periphery of the plurality of second flow channels and is respectively connected to the plurality of second flow channels.

[0015] Furthermore, the distribution plate further includes at least one fourth flow channel and a plurality of fifth flow channels, wherein the at least one fourth flow channel is respectively connected to the third flow channel, and the fifth flow channel is connected to the first flow channel in a one-to-one correspondence.

[0016] Furthermore, the fourth flow channel includes a first sub-flow channel and a second sub-flow channel that are connected to each other, the axis line of the first sub-flow channel, the axis line of the fifth flow channel and the axis line of the first flow channel are all parallel, the second sub-flow channel is connected to the third flow channel and its outlet is staggered with the inlet of the second flow channel.

[0017] In some embodiments of the present invention, the area of ​​the cross section of the first flow channel perpendicular to the length direction is S1, the length of the first flow channel is L1, and the following conditions are met:

[0018] and 5≤a≤20;

[0019] The area of ​​the cross section of the second flow channel perpendicular to the length direction is S2, the length of the second flow channel is L2, and the following conditions are met:

[0020] And 1≤b≤10;

[0021] Furthermore, L1, L2, S1, and S2 are required to satisfy the following conditions:

[0022] And 1.5≤c≤5.

[0023] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0024] Based on the fact that the currently prepared ultrafine fibers still have defects such as insufficient elasticity, poor gloss, and relatively poor strength such as tear strength, the utility model innovatively provides a new type of spinning assembly, which can continuously and stably spray out composite fibers of normal size and specific structure based on three components. By removing the single-component fibers in the composite fibers, ultrafine fibers with at least one excellent effect in elasticity, gloss, strength such as tear strength, etc. can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a spinneret assembly in an embodiment of the present utility model;

[0026] Figure 2 for Figure 1 A magnified schematic diagram of point A in the middle;

[0027] Figure 3 This is a structural diagram of a distribution plate in an embodiment of the present utility model;

[0028] Figure 4 for Figure 3 A magnified schematic diagram of point B in the middle;

[0029] Figure 5 for Figure 4 Another schematic diagram of the distribution channel shown;

[0030] Figure 6 This is a schematic diagram of the internal flow passage of the distribution plate after being cut open in an embodiment of the present utility model;

[0031] Figure 7 for Figure 6 Enlarged schematic diagram of point C in the middle;

[0032] Figure 8 This is a schematic diagram of the internal flow channel of the spinneret assembly after being cut open in an embodiment of the present invention;

[0033] Figure 9 for Figure 8 The enlarged schematic diagram of point D in the middle;

[0034] Figure 10 It is a partial schematic diagram of the first flow channel and the second flow channel;

[0035] Figure 11 This is a schematic diagram of another feeding structure of three components in an embodiment of the present utility model;

[0036] Figure 12 This is one of the cross-sectional schematic diagrams of the composite fiber, the elastic shaped fiber, and the single-component fiber formed by the third component in the embodiment of the present invention; wherein, Figure 12 (a) is a schematic cross-sectional view of the composite fiber. Figure 12 (b) is a schematic cross-sectional view of elastic shaped fibers. Figure 12 (c) is a schematic cross-sectional view of a fiber formed from the third component;

[0037] Figure 13 This is a second cross-sectional schematic diagram of the composite fiber, the elastic shaped fiber, and the single-component fiber formed by the third component in the embodiment of the present invention; wherein, Figure 13 (a) is a schematic cross-sectional view of the composite fiber. Figure 13 (b) is a schematic cross-sectional view of elastic shaped fibers. Figure 13 (c) is a schematic cross-sectional view of a fiber formed from the third component;

[0038] Figure 14 This is the third cross-sectional schematic diagram of the composite fiber, the elastic shaped fiber, and the single-component fiber formed by the third component in the embodiment of the present invention; wherein, Figure 14 (a) is a schematic cross-sectional view of the composite fiber. Figure 14 (b) is a schematic cross-sectional view of elastic shaped fibers. Figure 14 (c) is a schematic cross-sectional view of a fiber formed from the third component;

[0039] Figure 15 This is a fourth cross-sectional schematic diagram of the composite fiber, the elastic shaped fiber, and the single-component fiber formed by the third component in the embodiment of the present invention; wherein, Figure 15 (a) is a schematic cross-sectional view of the composite fiber. Figure 15 (b) is a schematic cross-sectional view of elastic shaped fibers. Figure 15 (c) is a schematic cross-sectional view of a fiber formed from the third component;

[0040] In the accompanying drawings, 10, first component; 20, second component; 30, third component; 40, spinneret assembly; 41, distribution plate; 411, first flow channel; 412, second flow channel; 413, third flow channel; 414, fourth flow channel; 4141, first sub-flow channel; 4142, second sub-flow channel; 415, fifth flow channel; 416, first component introduction slot; 417, second component introduction slot; 418, third component introduction slot; 419, solid middle part; 42, spinneret; 421, spinneret hole; 50, composite fiber; 51, single component area; 52, two-component area; 53, hollow structure; 60, elastic shaped fiber; 70, single component fiber. DETAILED DESCRIPTION

[0041] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0043] The utility model provides a spinneret assembly, which includes a distribution plate and a spinneret formed with a spinneret hole, the distribution plate including a first flow channel for simultaneously introducing the first component and the second component into the spinneret hole, and a second flow channel for introducing the third component into the spinneret hole; the first flow channel and the second flow channel are respectively provided with a plurality of them, and two adjacent first flow channels are separated by a second flow channel, the plurality of second flow channels are separated from each other or their respective axial center lines intersect at the same point, and the orthographic projections of the first flow channel and the second flow channel are both located within the orthographic projection range of the entrance of the spinneret hole.

[0044] In some cases, the outlets of the first flow channels are distributed on the circumference of a first circle, and the inlets of the second flow channels are distributed on the circumference of a second circle. The center of the first circle coincides with the center of the second circle, or a straight line between the two centers is parallel to the axis of the first flow channel. Furthermore, the diameter of the first circle is 1 / 3-3 / 4 of the diameter of the second circle.

[0045] In some cases, the cross-section of the first flow channel perpendicular to the length direction is circular, the cross-section of the second flow channel perpendicular to the length direction is square, the cross-section of the spinneret perpendicular to the length direction is circular, the axis of the first flow channel is perpendicular to the axis of the second flow channel, a fan-shaped area is formed between two adjacent second flow channels, and the first flow channel is located at the centroid of the fan-shaped area.

[0046] In some cases, the distribution plate further includes a third flow channel, which surrounds the periphery of the plurality of second flow channels and is respectively connected to the plurality of second flow channels. Furthermore, the distribution plate further includes at least one fourth flow channel and a plurality of fifth flow channels, wherein the at least one fourth flow channel is respectively connected to the third flow channel, and the fifth flow channel is connected to the first flow channel in a one-to-one correspondence. The fourth flow channel includes a first sub-flow channel and a second sub-flow channel that are interconnected, wherein the axis of the first sub-flow channel, the axis of the fifth flow channel, and the axis of the first flow channel are all parallel, and the second sub-flow channel is connected to the third flow channel, and its outlet is staggered with the inlet of the second flow channel.

[0047] In some cases, the area of ​​the cross section of the first flow channel perpendicular to the length direction is S1, the length of the first flow channel is L1, and the following conditions are met:

[0048] and 5≤a≤20;

[0049] The area of ​​the cross section of the second flow channel perpendicular to the length direction is S2, the length of the second flow channel is L2, and the following conditions are met:

[0050] And 1≤b≤10;

[0051] Furthermore, L1, L2, S1, and S2 are required to satisfy the following conditions:

[0052] And 1.5≤c≤5.

[0053] The first component and the second component are independently selected from PET (Chinese name: polyethylene terephthalate), PBT (Chinese name: polybutylene terephthalate) or PTT (Chinese name: polypropylene terephthalate), and the third component is PA6 (Chinese name: nylon 6), COPET (Chinese name: polyethylene terephthalate copolymer, alkali-soluble polyester), PE (Chinese name: polyethylene) or PP (polypropylene). Furthermore, the difference in intrinsic viscosity between the first component and the second component may be 0.15-0.7 dL / g, for example, 0.15 dL / g, 0.2 dL / g, 0.25 dL / g, 0.3 dL / g, 0.35 dL / g, 0.4 dL / g, 0.45 dL / g, 0.5 dL / g, 0.55 dL / g, 0.6 dL / g, 0.65 dL / g, 0.7 dL / g, etc.; the mass ratio of the first component to the second component is 10:90 to 90:10, for example, The total feed mass ratio of the first component to the second component and the feed mass ratio of the third component is 90:10 to 50:50, for example, 50:50, 60:40, 65:35, 70:30, 75:25, 80:20, 85:15, etc.

[0054] The following combination Figures 1 to 15 The technical solution of the present invention is further described. Figures 1 to 11 , Figures 12 to 15 It is a cross-sectional schematic diagram of the composite fiber, elastic shaped fiber and single component fiber formed by the third component made by the aforementioned spinning assembly.

[0055] The spinneret assembly 40 includes a distribution plate 41 and a spinneret 42 stacked in sequence from top to bottom. The distribution plate 41 is used to introduce various components. The spinneret 42 is formed with spinneret holes 421. The spinneret holes 421 are used to receive the various components introduced by the distribution plate 41 and then spray them out to form composite fibers 50.

[0056] Figures 1 to 2A schematic diagram of the distribution flow channels for introducing the first component, the second component, and the third component into the distribution plate 41 in the initial stage is shown schematically, with only one example being given. Specifically, the first component is introduced into the fifth flow channel 415 through the first component introduction groove 416, and the second component is introduced into the fifth flow channel 415 through the second component introduction groove 417. The first component introduction groove 416 and the second component introduction groove 417 are respectively connected to the fifth flow channel 415, and the two are at an angle, which is an acute angle. The acute angle can be 10°-75°, and one first component introduction groove 416, one second component introduction groove 417, and one fifth flow channel 415 constitute a combination for introducing two components. The combination for introducing two components has multiple components that roughly form a circle. The fifth flow channel 415 is located in the middle of the circle. The first component introduction groove 416 and the second component introduction groove 417 are respectively extended from the outside to the inside. At the same time, a plurality of third component introduction grooves 418 are also provided on the distribution plate 41. The third component introduction grooves 418 are arranged in a ring shape. A third component introduction groove 418 can be provided on both sides of the aforementioned circle. The two third component introduction grooves 418 surround the aforementioned circle in the middle. In this way, the third component can be introduced at both ends, which not only realizes the introduction of a sufficient amount of the third component, but also helps to disperse the pressure of the introduction of the third component, avoiding excessive pressure caused by introduction from a single position.

[0057] Further, see Figures 3 and 4 , with the bottom of the distribution plate 41 facing upward, a schematic diagram of the distribution of the flow channels at the bottom of the distribution plate 41 can be seen, which includes a plurality of first flow channels 411 and a plurality of second flow channels 412. Two adjacent first flow channels 411 are separated by a second flow channel 412, and two adjacent second flow channels 412 are separated by a first flow channel 411. Figure 4The multiple second flow channels 412 in the spinneret converge at a point (an area) in the middle, and the single-component fiber formed in this way will be a whole with a distinct special-shaped structure. The first component and the second component introduced simultaneously by the first flow channel 411 will pass into the spinneret hole in parallel. In this way, the two-component fiber formed by the first component and the second component will be confined between the gaps between the single-component fibers. The third flow channel 413 is annularly arranged, that is, the third component in the third flow channel 413 can be supplied to the multiple second flow channels 412 at the same time through the annular arrangement, and the three components are arranged in an annular manner. The third component in the current third flow channel 413 flows in through the first sub-flow channel 4141 and the second sub-flow channel 4142 of the fourth flow channel in sequence. Two fourth flow channels can be symmetrically arranged, and the third component can be introduced into the third flow channel 413 from both ends at the same time, which is beneficial for each position in the third flow channel 413 to be quickly filled with the third component, and then each second flow channel 412 can receive the introduction of the third component basically at the same time and evenly, which is beneficial for multiple second flow channels 412 to simultaneously introduce the third component into the spinneret, further ensuring the stable and continuous preparation of the composite fiber.

[0058] Figure 5 The structure shown is basically the same Figure 4 The only difference is that the second flow channels 412 are arranged separately from each other and cannot be gathered in the middle. Specifically, the middle is made solid and arranged in a solid middle 419, so that the preparation of hollow composite fibers can be achieved.

[0059] Figure 6 and Figure 7 The internal flow channel of the distribution plate 41 is revealed by cutting open a portion of the distribution plate 41. Figure 8 and Figure 9The internal flow channels of the spinneret assembly 40 including the distribution plate 41 and the spinneret are revealed by partially cutting open. Specifically, the first component and the second component introduced from the first component introduction slot and the second component introduction slot respectively enter the first flow channel 411 through the fifth flow channel 415. The outlet of the first flow channel 411 is opposite to the inlet of the spinneret hole 421. The third component introduced from the third component introduction slot flows in sequence through the first sub-flow channel 4141 and the second sub-flow channel 4142 of the fourth flow channel and enters the third flow channel 413. The axis line of the first sub-flow channel 4141, the axis line of the fifth flow channel 415 and the axis line of the first flow channel 411 are all parallel. The second sub-flow channel 4142 is connected to the third flow channel 413 and its outlet is staggered with the inlet of the second flow channel 412. The third flow channel 413 evenly distributes the third component to multiple second flow channels 412 at the same time, and the third component can quickly fill the second flow channels 412. , and enters the spinneret 421 through the lower opening of the second flow channel 412. The orthographic projections of the first flow channel 411 and the second flow channel 412 are both located within the orthographic projection range of the entrance of the spinneret 421, and the axis of the first flow channel 411 is perpendicular to the axis of the second flow channel 412. Here, the utility model designs the structure of the first flow channel 411 and the second flow channel 412. The purpose of the design is to ensure that the first component, the second component and the third component are in a suitable pressure state and flow state when they are distributed and introduced. Furthermore, the area of ​​the cross section of the first flow channel 411 perpendicular to the length direction is S1, the cross section of the first flow channel 411 perpendicular to the length direction can be circular, the area of ​​the cross section of the second flow channel 412 perpendicular to the length direction is S2, and the cross section of the second flow channel 412 perpendicular to the length direction is square, and at the same time, they each meet the following conditions (see further). Figure 10 ):The length of the first flow channel 411 is recorded as L1 and satisfies the following condition: S1=π×(L1 / 2a) 2 , and 5≤a≤20; the length of the second flow channel 412 is recorded as L2, and satisfies the following condition: S2=π×(L2 / 2b) 2 , and 1≤b≤10; further preferably, L1, L2, S1, and S2 can satisfy the following conditions:

[0060] and 1.5≤c≤5;

[0061] The first flow channel 411 and the second flow channel 412 are the last distribution parts of the distribution plate 41. The subsequent three components will enter the spinneret and be ejected through the spinneret. Experiments have found that by limiting the structure of the first flow channel 411 and the second flow channel 412 as mentioned above, it can better ensure that the three components have appropriate pressure and flow states when being distributed and entering, thereby stably and continuously preparing composite fibers, reducing or even avoiding the occurrence of uneven distribution caused by the interaction between the components and the possible leakage of slurry.

[0062] In addition, the outlets of the plurality of first flow channels 411 are respectively distributed on the circumference of the first circle, and the inlets of the plurality of second flow channels 412 are respectively distributed on the circumference of the second circle; the center of the first circle coincides with the center of the second circle, or the straight line containing the two centers is parallel to the axis of the first flow channel 411. Furthermore, the diameter of the first circle is 1 / 3-3 / 4 of the diameter of the second circle, and in this embodiment, approximately 1 / 2 can be used. A fan-shaped area is formed between two adjacent second flow channels 412, and the first flow channel 411 is located at the centroid of the fan-shaped area. The cross-section of the spinneret 421 perpendicular to the length direction is circular.

[0063] See also Figure 11 As shown, it is another feeding structure diagram of the three components in the embodiment of the present invention. Figure 2 In terms of the structure, another composite fiber will be obtained; of course, the difference is that the arrangement of the first component and the second component is different, and the subsequent spinneret structure is the same. Figure 2 The feed structure shown will result in Figure 13 or Figure 15 The structure of the left-right arrangement shown, Figure 11 The feed structure shown will result in Figure 12 or Figure 14 The structure of the upper and lower arrangement (inside and outside arrangement) shown in FIG. Figure 11 The fourth flow channel 414' is located at the same Figure 2 The first component introduction groove 416' and the second component introduction groove 417' are arranged opposite to each other, and the fifth flow channel 415' is located in the middle of the first component introduction groove 416' and the second component introduction groove 417'. In particular, only one second component introduction groove 417' is provided, which corresponds to multiple first component introduction grooves 416'. Such a feeding form is conducive to forming Figure 12 or Figure 14 The first component and the second component are shown in an upper and lower arrangement.

[0064] The cross-sectional diagram of the composite fiber, elastic shaped fiber and the single component fiber formed by the third component is shown in FIG. Figures 12 to 15 As shown;

[0065] in, Figure 12 and Figure 13 In the composite fiber 50, the cross section is generally circular. The single component region 51 is composed of the third component 30, and the bicomponent region 52 is composed of the first component 10 and the second component 20. The third component 30 forms a single component fiber 70, specifically a "M"-shaped fiber with a very large specific surface area, while the elastic shaped fiber 60 composed of the first component 10 and the second component 20 is Figure 12 and Figure 13 Specifically, the distribution of the first component 10 and the second component 20 is different, and these distributions can be achieved by adjusting the direction of introducing the first component 10 and the second component 20 on the distribution plate ( Figure 12 You can use Figure 11 The three-component feeding direction is shown. Figure 13 You can use Figure 2 The elastic shaped fiber 60 composed of the first component 10 and the second component 20 has been tested and its strength, such as tear strength and glossiness, has shown relatively excellent performance;

[0066] Figure 14 and Figure 15 In the embodiment, the composite fiber 50 is a hollow composite fiber, and its cross section has a hollow structure 53, and the hollow structure 53 can be passed through Figure 5 The distribution plate structure shown in FIG. 4 is realized, and the structure of the elastic shaped fiber 60 made in this way is similar to that of the Figure 12 、 Figure 13 While there are differences in the materials used, testing has shown that both have essentially equivalent performance. However, one is hollow, while the other is solid, resulting in differences in the degree of force applied during peeling and disassembly. Furthermore, after mechanically peeling and disassembling the hollow composite fibers, the resulting single-component fibers emerge as multiple "straight" shapes, possessing a unique tactile feel and sheen, primarily used in sun-protective clothing. Furthermore, hollow composite fibers can be used in high-end skinwear and down jackets.

[0067] According to tests, the linear density of the composite fiber is 20-200 dtex; the elongation at break is 10%-30%, the breaking strength is 2.6-3.5 cN / dtex; the dyeing uniformity is greater than or equal to level 4.5; the boiling water shrinkage is 6%-12%; and the curling shrinkage is 20%-40%.

[0068] In summary, the new spinning assembly of the utility model can be used to produce composite fibers with the radial size of normal fibers, and the structure of the composite fibers can be adjusted by the different feeding structures of the distribution plate, or the preparation of hollow composite fibers can be achieved by adjusting the distribution plate. Finally, using the composite fibers, the corresponding splitting method can be selected according to the material to achieve the simultaneous acquisition of two-component ultrafine fibers and single-component fibers with specific structures, which greatly improves production efficiency. In particular, the two-component ultrafine fibers can have a specific morphology, giving them excellent mechanical properties, and solving at least one problem existing in the prior art.

[0069] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

[0070] The endpoints of the ranges and any values ​​disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoints of each range, the endpoints of each range and individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered to be specifically disclosed herein.

Claims

1. A spinning assembly, characterized in that The spinneret assembly includes a distribution plate and a spinneret formed with a spinneret hole. The distribution plate includes a first flow channel for simultaneously introducing a first component and a second component into the spinneret hole, and a second flow channel for introducing a third component into the spinneret hole. There are multiple first flow channels and multiple second flow channels, and each of the adjacent first flow channels is separated by a second flow channel. The multiple second flow channels are separated from each other or their respective axial center lines intersect at the same point. The orthographic projections of the first flow channel and the second flow channel are both located within the orthographic projection range of the entrance of the spinneret hole.

2. The spinning assembly according to claim 1, characterized in that The outlets of the plurality of first flow channels are respectively distributed on the circumference of a first circle, and the inlets of the plurality of second flow channels are respectively distributed on the circumference of a second circle; The center of the first circle coincides with the center of the second circle, or a straight line formed by connecting the two centers is parallel to the axis of the first flow channel.

3. The spinning assembly according to claim 2, characterized in that The diameter of the first circle is 1 / 3-3 / 4 of the diameter of the second circle.

4. The spinning assembly according to claim 1 or 2, characterized in that The cross section of the first flow channel perpendicular to the length direction is circular, and the cross section of the second flow channel perpendicular to the length direction is square; and / or the axis of the first flow channel is perpendicular to the axis of the second flow channel.

5. The spinning assembly according to claim 1 or 2, characterized in that A fan-shaped area is formed between two adjacent second flow channels, and the first flow channel is located at the centroid of the fan-shaped area; and / or the cross section of the spinneret hole perpendicular to the length direction is circular.

6. The spinning assembly according to claim 1, characterized in that The distribution plate further includes a third flow channel, which surrounds the outer periphery of the plurality of second flow channels and is respectively communicated with the plurality of second flow channels.

7. The spinning assembly according to claim 6, characterized in that The distribution plate further includes at least one fourth flow channel and a plurality of fifth flow channels. The at least one fourth flow channel is communicated with each of the third flow channels, and the fifth flow channels are communicated with the first flow channels in a one-to-one correspondence.

8. The spinning assembly according to claim 7, characterized in that The fourth flow channel includes a first sub-flow channel and a second sub-flow channel that are connected to each other, the axis line of the first sub-flow channel, the axis line of the fifth flow channel and the axis line of the first flow channel are all parallel, the second sub-flow channel is connected to the third flow channel and its outlet is staggered with the inlet of the second flow channel.

9. The spinning assembly according to claim 1, wherein The area of ​​the cross section of the first flow channel perpendicular to the length direction is S1, the length of the first flow channel is L1, and the following conditions are met: and 5≤a≤20; The area of ​​the cross section of the second flow channel perpendicular to the length direction is S2, the length of the second flow channel is L2, and the following conditions are met: And 1≤b≤10.

10. The spinning assembly according to claim 9, characterized in that Make L1, L2, S1, and S2 meet the following conditions: And 1.5≤c≤5.

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