Low-temperature dyeable elastic composite fiber filament

Abstract

The invention belongs to the technical field of composite fiber production, and discloses a low-temperature dyeable elastic composite fiber filament and processing equipment thereof.The composite fiber filament comprises polyamide fiber, polyphenylene sulfide fiber, polypropylene fiber and waste recycled polyester fiber which are compounded, the waste recycled polyester fibers are one or more of polytrimethylene terephthalate fibers, polyethylene glycol terephthalate fibers and polybutylene terephthalate fibers. The composite fiber filament formed by compounding the polyamide fiber, the polyphenylene sulfide fiber, the polypropylene fiber and the waste recycled polyester fiber has the comprehensive performance of good fracture resistance, hygroscopicity, dyeability, wear resistance, rebound resilience, corrosion resistance, antibacterial property, aging resistance and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of composite fiber production, and particularly to a low-temperature dyeable elastic composite fiber filament and its processing equipment. Background Art

[0002] A low-temperature dyeable elastic composite fiber filament is an elastic fiber filament with low-temperature dyeing characteristics. This kind of fiber filament is usually made of materials such as polyamide and polyester, and has excellent elasticity and durability, and is suitable for a variety of textile applications. The low-temperature dyeable elastic composite fiber filament can be dyed at a lower temperature, usually below 160°C, which enables it to be used in combination with more sensitive fibers such as wool, silk, acrylic, etc., increasing the flexibility and diversity of dyeing.

[0003] The elastic composite fibers disclosed in the prior art usually include polyurethane elastic fibers and polyether ester elastic fibers. The polyurethane elastic fibers have the characteristics of high elasticity and rapid recovery to the original shape, and the polyether ester elastic fibers have relatively high strength, good elasticity and good light resistance. However, the elastic composite fibers composed of polyurethane elastic fibers and polyether ester elastic fibers have defects such as poor anti-fracture performance and low dyeability. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a low-temperature dyeable elastic composite fiber filament and its processing equipment.

[0005] The above technical object of the present invention is achieved by the following technical solution: A low-temperature dyeable elastic composite fiber filament, comprising composite polyamide fiber, polyphenylene sulfide fiber, polypropylene fiber and waste recycled polyester fiber, wherein the waste recycled polyester fiber is one or more of polytrimethylene terephthalate fiber, polyethylene terephthalate fiber, polybutylene terephthalate fiber.

[0006] By adopting the above technical solutions, polyamide fiber has excellent fracture resistance, hygroscopicity, dyeability, abrasion resistance and resilience; polyphenylene sulfide fiber has good flame retardancy, chemical corrosion resistance, electrical insulation and heat stability; polypropylene fiber has the advantages of light weight, non-toxicity, good electrical insulation, strong chemical stability, easy processing, abrasion resistance, antibacterial property and easy dyeing; polytrimethylene terephthalate fiber is a new type of polyester fiber with excellent properties, having good softness, bulkiness, stain resistance, elasticity and other properties as well as the characteristic of being easily dyed at normal temperature; polyethylene terephthalate fiber has properties such as high strength, easy washing and quick drying, dimensional stability, strong elasticity and heat resistance as well as the characteristic of being easily dyed at normal temperature; polybutylene terephthalate fiber has properties such as easy washing and quick drying, strong elasticity, oil stain resistance and aging resistance as well as the characteristics of being easily dyed at normal temperature and excellent color fastness. The composite fiber filament composed of polyamide fiber, polyphenylene sulfide fiber, polypropylene fiber and waste recycled polyester fiber has comprehensive properties such as good fracture resistance, hygroscopicity, dyeability, abrasion resistance, resilience, corrosion resistance, antibacterial property and aging resistance.

[0007] Furthermore, the composite fiber filament further includes basalt fiber, and the basalt fiber is compounded with polyester fiber, polyamide fiber, polyphenylene sulfide fiber and polypropylene fiber to form a fiber filament.

[0008] By adopting the above technical solutions, basalt fiber has excellent properties such as good tensile resistance, stability, acid and alkali corrosion resistance and high temperature resistance. The addition of basalt fiber is beneficial to enhancing the tensile resistance and high temperature resistance of the composite fiber filament.

[0009] Furthermore, the preparation method of the composite fiber filament is as follows:

[0010] S1. Cut the waste polyester fiber fabric into slices, defibrate it in a fiber defibrator for 4 - 5 minutes, prepare it into an aqueous solution, beat it with a vertical refiner, and filter it with a Buchner funnel to obtain the waste recycled polyester fiber. Then place the waste recycled polyester fiber in a constant temperature oven at 120°C and dry it for 10 hours. Subsequently, immediately extrude the waste recycled polyester fiber through a screw extruder and spin it with a spinning machine to obtain polyester fiber for standby;

[0011] S2. Place the spinning-grade polyamide fiber, polyphenylene sulfide fiber and polypropylene fiber in different vacuum rotary drum ovens respectively, and dry them at 120°C for 10 hours;

[0012] S3. Mix, extrude and granulate the composite raw material fiber composed of polyester fiber, polyamide fiber, polyphenylene sulfide fiber and polypropylene fiber with a compatibilizer according to a mass ratio of 100:5 - 100:10 by using a twin-screw extruder, and spin the pellets with a composite spinning machine to obtain a low-temperature dyeable elastic composite fiber filament.

[0013] Further, in step S1, the rotation speed of the vertical refiner for beating is 25000 r / min, and the pressure is 3.5 N.

[0014] Further, in step S3, the spinning conditions of the composite spinning machine are as follows: the spinning temperature is 310 °C, the winding speed is 120 m / min, the melting and heat preservation time is 15 min, and the stirring speed is 160 r / min.

[0015] The present application also discloses a processing device for low-temperature dyeable elastic composite fiber filaments. The fiber disaggregator includes a tank body, a top cover arranged at the top of the tank body, and a feed pipe penetrating and fixed on the top cover. An installation groove is arranged on the inner bottom wall of the tank body. A sleeve rotatably connected to the inner wall of the installation groove is arranged in the tank body. A central rod coaxial with the sleeve is fixed on the inner bottom wall of the installation groove. A rotating rod rotatably connected to the sleeve penetrates through the side wall of the sleeve. A stirring unit is arranged at one end of the rotating rod away from the central rod. A driving assembly for driving the sleeve to rotate is arranged on the top cover. A transmission assembly for driving the stirring unit to turn during the rotation of the sleeve is arranged in the sleeve. A discharge assembly is arranged at a position on the side wall of the tank body close to its bottom.

[0016] By adopting the above technical solution, waste polyester fiber fabric chips and water are added into the tank body through the feed pipe. The driving assembly can drive the sleeve and the stirring unit to rotate around the axis of the sleeve. The transmission assembly can make the stirring unit turn during the rotation of the sleeve, so as to increase the velocity difference between different flow layers of the polyester fiber, thereby generating a stronger hydraulic shear effect, enhancing the disaggregation effect of the polyester fiber, improving the fiber disaggregation efficiency, enabling the waste polyester fiber to be fully utilized, and the recovered polyester fiber is discharged by the discharge assembly. Subsequently, it is successively dried, extruded, and spun to obtain polyester fiber, which is used as a raw material to prepare composite fiber filaments.

[0017] Further, the driving assembly includes a motor fixed on the top of the top cover. The output end of the motor penetrates the top cover and is rotatably connected. The driving assembly further includes a driving gear fixed to the output end of the motor, a driven gear fixedly sleeved on the sleeve and meshing with the driving gear, and an outer ring fixed to the bottom of the top cover and cooperating with the upper end of the sleeve.

[0018] By adopting the above technical solution, after the motor works, it drives the driving gear to rotate, so that the driven gear meshing with the driving gear and the sleeve fixed to the driven gear both rotate, so that the stirring unit continuously turns during the rotation process, which is beneficial to improving the recovery efficiency of polyester fiber. The setting of the outer ring improves the stability of the sleeve during the rotation process.

[0019] Further, the transmission assembly includes a driven bevel gear fixed to one end of the rotating rod and located inside the sleeve, and a driving bevel gear fixedly sleeved on the central rod and meshing with the driven bevel gear. An inner ring cooperating with the upper end of the central rod is further fixed to the bottom of the top cover.

[0020] By adopting the above technical solution, after the motor works and the sleeve rotates, since the driving bevel gear is fixed to the central rod, the central rod is fixed to the inner bottom wall of the installation groove, the driven bevel gear is fixed to one end of the rotating rod, and the rotating rod is rotatably connected to the side wall of the sleeve, the driven bevel gear is caused to rotate, so that the stirring unit rotates around the rotating rod during the rotation of the sleeve to turn the polyester fiber slurry in the tank and promote the loosening of the polyester fiber.

[0021] Further, the stirring unit includes a stirring frame fixed to the end of the rotating rod away from the central rod and an extension frame hinged to the stirring frame. A first fixing plate is fixed to one side of the extension frame away from the hinge between it and the stirring frame. A second fixing plate is fixed to one side of the stirring frame away from the hinge between it and the extension frame. The second fixing plate corresponds to the position of the first fixing plate, and an elastic connecting rod is fixed between the mutually approaching sides of the second fixing plate and the first fixing plate. The stirring frame and the extension frame are in mutual abutment under the action of the elastic connecting rod.

[0022] By adopting the above technical solution, the stirring frame and the extension frame are in mutual abutment under the action of the elastic connecting rod, maximizing the length of the stirring unit, so as to expand the vertical stirring range of the stirring unit in the tank. Since the stirring frame and the extension frame are hinged, and the second fixing plate and the first fixing plate are connected by an elastic connecting rod, the extension frame rotates around the hinge axis of the hinge after contacting the inner wall of the tank, ensuring the normal rotation of the stirring frame and the extension frame, which is beneficial to improving the stirring effect on the polyester fiber slurry to improve the loosening efficiency.

[0023] Further, the inner wall of the installation groove and the outer wall of the sleeve are rotatably connected through a bearing. The inner bottom wall of the tank is inclined. A rotary shaft seal for maintaining sealing and located above the bearing is provided between the inner wall of the installation groove and the outer wall of the sleeve. The discharging assembly includes a discharging pipe fixed and communicated with the side wall of the tank and a solenoid valve arranged on the discharging pipe.

[0024] By adopting the above technical solution, the rotary shaft seal ensures the sealing performance during the rotation between the installation groove and the sleeve, ensuring the cleanliness of the bearing. The inner bottom wall of the tank is inclined, so that the polyester fiber slurry can be discharged from the discharging pipe when the solenoid valve is opened.

[0025] In summary, the present invention has the following beneficial effects:

[0026] 1. The composite fiber filament composed of polyamide fiber, polyphenylene sulfide fiber, polypropylene fiber and waste recycled polyester fiber in this application has comprehensive properties such as good fracture resistance, moisture absorption, dyeability, wear resistance, resilience, corrosion resistance, antibacterial property and aging resistance;

[0027] 2. In this application, the waste polyester fiber fabric slices and water are added into the tank through the feed pipe. By the driving component, the sleeve and the stirring unit can be driven to rotate around the axis of the sleeve. The transmission component can make the stirring unit turn during the rotation of the sleeve, so as to increase the velocity difference between different flow layers of the polyester fiber, thereby generating a stronger hydraulic shear effect, enhancing the defibration effect of the polyester fiber, improving the fiber defibration efficiency, making full use of the waste polyester fiber, and the recycled polyester fiber is discharged by the discharging component. Subsequently, it is dried, extruded and spun into polyester fiber in sequence to be used as raw material to prepare the composite fiber filament;

[0028] 3. In this application, the basalt fiber has excellent properties such as good tensile resistance, stability, acid and alkali corrosion resistance and high temperature resistance. The addition of basalt fiber is beneficial to enhancing the tensile resistance and high temperature resistance of the composite fiber filament. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is the overall structural schematic diagram of the embodiment of the present invention;

[0030] Figure 2 is Figure 1 the structural schematic diagram from another perspective;

[0031] Figure 3 is the structural schematic diagram of the embodiment of the present invention for highlighting the inside of the tank;

[0032] Figure 4 is Figure 2 the enlarged schematic diagram at A in

[0033] Figure 5 is the structural schematic diagram of the embodiment of the present invention for highlighting the transmission component.

[0034] In the figure: 1, tank; 11, installation groove; 12, bearing; 13, rotary shaft seal; 2, top cover; 21, feed pipe; 22, outer ring; 23, inner ring; 3, sleeve; 31, rotating rod; 4, central rod; 5, stirring unit; 51, stirring frame; 511, second fixing plate; 52, lengthening frame; 521, first fixing plate; 6, driving component; 61, motor; 62, driving gear; 63, driven gear; 7, transmission component; 71, driven bevel gear; 72, driving bevel gear; 8, discharging component; 81, discharging pipe; 82, solenoid valve; 9, elastic connecting rod. DETAILED DESCRIPTION OF THE INVENTION

[0035] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application; obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0036] Embodiment 1

[0037] As Figures 1-5 shown, an embodiment of the present application discloses a low-temperature dyeable elastic composite fiber filament, which includes a composite of polyamide fiber, polyphenylene sulfide fiber, polypropylene fiber, and waste recycled polyester fiber. Among them, the waste recycled polyester fiber is one or more of polytrimethylene terephthalate fiber, polyethylene terephthalate fiber, and polybutylene terephthalate fiber.

[0038] The polyamide fiber has excellent fracture resistance, hygroscopicity, dyeability, abrasion resistance, and resilience; the polyphenylene sulfide fiber has good flame retardancy, chemical corrosion resistance, electrical insulation, and heat stability; the polypropylene fiber has the advantages of light weight, non-toxicity, good electrical insulation, strong chemical stability, easy processing, wear resistance, antibacterial property, and easy dyeing; the polytrimethylene terephthalate fiber is a new type of polyester fiber with excellent performance, having good softness, fluffiness, stain resistance, elasticity and other properties and the characteristic of being easily dyed at normal temperature; the polyethylene terephthalate fiber has properties such as high strength, easy washing and quick drying, dimensional stability, strong elasticity, heat resistance and the characteristic of being easily dyed at normal temperature; the polybutylene terephthalate fiber has properties such as easy washing and quick drying, strong elasticity, oil stain resistance, aging resistance and the characteristics of being easily dyed at normal temperature and excellent color fastness. The composite fiber filament composed of polyamide fiber, polyphenylene sulfide fiber, polypropylene fiber, and waste recycled polyester fiber has comprehensive properties such as good fracture resistance, hygroscopicity, dyeability, abrasion resistance, resilience, corrosion resistance, antibacterial property, and aging resistance.

[0039] It should be noted that the preparation method of the composite fiber filament is as follows:

[0040] S1. Cut the waste polyester fiber fabric into slices, defibrate it in a fiber defibrator for 4 - 5 minutes, prepare it into an aqueous solution, then beat it with a vertical refiner, and filter it with a Buchner funnel to obtain the waste recycled polyester fiber. Then, place the waste recycled polyester fiber in a constant temperature oven at 120°C and dry it for 10 hours. Subsequently, immediately extrude the waste recycled polyester fiber through a screw extruder and spin it with a spinning machine to obtain the polyester fiber for standby;

[0041] Among them, the rotation speed of the vertical refiner for beating is 25000 r / min, and the pressure is 3.5 N;

[0042] S2. Place the spinning-grade polyamide fiber, polyphenylene sulfide fiber, and polypropylene fiber in different vacuum drum ovens in sequence, and dry them at 120 °C for 10 h;

[0043] S3. Mix, extrude, and pelletize the composite raw material fiber composed of polyester fiber, polyamide fiber, polyphenylene sulfide fiber, and polypropylene fiber and the compatibilizer according to a mass ratio of 100:5 to 100:10 using a twin-screw extruder, and spin the pellets using a composite spinning machine to obtain low-temperature dyeable elastic composite fiber filaments;

[0044] Among them, the spinning conditions of the composite spinning machine are: the spinning temperature is 310 °C, the winding speed is 120 m / min, the melting holding time is 15 min, and the stirring speed is 160 r / min.

[0045] This embodiment also discloses a processing device for low-temperature dyeable elastic composite fiber filaments. Specifically: The fiber loosener includes a tank body 1, a top cover 2 arranged on the top of the tank body 1, and a feed pipe 21 penetrating and fixed on the top cover 2. An installation groove 11 is arranged on the inner bottom wall of the tank body 1. A sleeve 3 rotatably connected to the inner wall of the installation groove 11 is arranged in the tank body 1. A central rod 4 coaxial with the sleeve 3 is fixed on the inner bottom wall of the installation groove 11. A rotating rod 31 penetrating and rotatably connected to the sleeve 3 is arranged on the side wall of the sleeve 3. A stirring unit 5 is arranged at one end of the rotating rod 31 far from the central rod 4. A driving assembly 6 for driving the sleeve 3 to rotate is arranged on the top cover 2. A transmission assembly 7 for driving the stirring unit 5 to turn during the rotation of the sleeve 3 is arranged in the sleeve 3. A discharge assembly 8 is arranged at a position on the side wall of the tank body 1 close to its bottom.

[0046] Add the waste polyester fiber fabric chips and water into the tank body 1 from the feed pipe 21. The driving assembly 6 can drive the sleeve 3 and the stirring unit 5 to rotate around the axis of the sleeve 3. The transmission assembly 7 can make the stirring unit 5 turn during the rotation of the sleeve 3, so as to increase the velocity difference between different flow layers of the polyester fiber, thereby generating a stronger hydraulic shear effect, enhancing the loosening effect of the polyester fiber, improving the fiber loosening efficiency, making full use of the waste polyester fiber, and discharging the recycled polyester fiber from the discharge assembly 8. Subsequently, it is dried, extruded, and spun to obtain polyester fiber, which is used as a raw material to prepare composite fiber filaments.

[0047] The driving assembly 6 includes a motor 61 fixed on the top of the top cover 2. The output end of the motor 61 penetrates the top cover 2 and is rotatably connected. The driving assembly 6 further includes a driving gear 62 fixed to the output end of the motor 61, a driven gear 63 fixedly sleeved on the sleeve 3 and meshing with the driving gear 62, and an outer ring 22 fixed to the bottom of the top cover 2 and cooperating with the upper end of the sleeve 3.

[0048] After the motor 61 operates, it drives the driving gear 62 to rotate, thereby causing the driven gear 63 engaged with the driving gear 62 and the sleeve 3 fixed to the driven gear 63 to rotate, so that the stirring unit 5 continuously flips during rotation, which is beneficial to improving the recycling efficiency of polyester fibers. The setting of the outer ring 22 improves the stability of the sleeve 3 during rotation.

[0049] The transmission assembly 7 includes a driven bevel gear 71 fixed to one end of the rotating rod 31 and located inside the sleeve 3, and a driving bevel gear 72 fixedly sleeved on the central rod 4 and meshed with the driven bevel gear 71. An inner ring 23 matching the upper end of the central rod 4 is also fixed to the bottom of the top cover 2.

[0050] After the motor 61 operates and causes the sleeve 3 to rotate, since the driving bevel gear 72 is fixed to the central rod 4, the central rod 4 is fixed to the inner bottom wall of the installation groove 11, the driven bevel gear 71 is fixed to one end of the rotating rod 31, and the rotating rod 31 is rotatably connected to the side wall of the sleeve 3, thereby causing the driven bevel gear 71 to rotate, so that the stirring unit 5 rotates around the rotating rod 31 during the rotation of the sleeve 3 to flip the polyester fiber slurry in the tank body 1, promoting the dissociation of the polyester fibers.

[0051] The stirring unit 5 includes a stirring frame 51 fixed to the end of the rotating rod 31 away from the central rod 4 and an extension frame 52 hinged to the stirring frame 51. A first fixing plate 521 is fixed to one side of the extension frame 52 away from the hinge between it and the stirring frame 51. A second fixing plate 511 is fixed to one side of the stirring frame 51 away from the hinge between it and the extension frame 52. The second fixing plate 511 corresponds to the position of the first fixing plate 521, and an elastic connecting rod 9 (a rod made of silicone and having good elastic properties) is fixed between the sides of the second fixing plate 511 and the first fixing plate 521 that are close to each other. The stirring frame 51 and the extension frame 52 are in contact with each other under the action of the elastic connecting rod 9.

[0052] The stirring frame 51 and the extension frame 52 are in contact with each other under the action of the elastic connecting rod 9, maximizing the length of the stirring unit 5, thereby expanding the vertical stirring range of the stirring unit 5 in the tank body 1. Since the stirring frame 51 and the extension frame 52 are hinged, and the second fixing plate 511 and the first fixing plate 521 are connected by the elastic connecting rod 9, the extension frame 52 rotates around the hinge axis of the hinge after contacting the inner wall of the tank body 1, ensuring the normal rotation of the stirring frame 51 and the extension frame 52, which is beneficial to improving the stirring effect on the polyester fiber slurry to improve the dissociation efficiency.

[0053] The inner wall of the installation groove 11 and the outer wall of the sleeve 3 are rotatably connected through a bearing 12. The inner bottom wall of the tank body 1 is inclined. A rotary shaft seal 13 for maintaining sealing and located above the bearing 12 is arranged between the inner wall of the installation groove 11 and the outer wall of the sleeve 3. The discharge assembly 8 includes a discharge pipe 81 fixedly connected and communicated with the side wall of the tank body 1 and a solenoid valve 82 arranged on the discharge pipe 81. The rotary shaft seal 13 ensures the sealing performance during the rotation between the installation groove 11 and the sleeve 3, ensuring the cleanliness of the bearing 12. The inner bottom wall of the tank body 1 is inclined, so that the polyester fiber slurry can be discharged from the discharge pipe 81 when the solenoid valve 82 is opened.

[0054] Example 2

[0055] The difference between this embodiment and Embodiment 1 is only that: the composite fiber filament further includes basalt fiber, and the basalt fiber is compounded with polyester fiber, polyamide fiber, polyphenylene sulfide fiber and polypropylene fiber to form a fiber filament. Basalt fiber has excellent properties such as good tensile resistance, stability, acid and alkali corrosion resistance, and high temperature resistance. The addition of basalt fiber is beneficial to enhancing the tensile resistance and high temperature resistance of the composite fiber filament.

[0056] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A low-temperature dyeable elastic composite fiber filament, characterized in that: It includes composite polyamide fiber, polyphenylene sulfide fiber, polypropylene fiber and recycled polyester fiber. Among them, the recycled polyester fiber is one or more of polytrimethylene terephthalate fiber, polyethylene terephthalate fiber, and polybutylene terephthalate fiber.

2. The low-temperature dyeable elastic composite fiber filament according to claim 1, characterized in that: It also includes basalt fiber, and the basalt fiber is compounded with polyester fiber, polyamide fiber, polyphenylene sulfide fiber and polypropylene fiber to form a fiber filament.

3. A low-temperature dyeable elastic composite fiber filament according to claim 1 or 2, characterized in that, The preparation method of the composite fiber filament is as follows: S1. Slice the waste polyester fiber fabric, defibrate it in a fiber defibrator for 4 - 5 minutes. After preparing it into an aqueous solution, beat it with a vertical refiner, and filter it with a Buchner funnel to obtain the recycled polyester fiber. Then place the recycled polyester fiber in a constant temperature oven at 120°C and dry it for 10 hours. Subsequently, immediately extrude the recycled polyester fiber through a screw extruder and spin it with a spinning machine to obtain the polyester fiber for standby. S2. Place the spinning-grade polyamide fiber, polyphenylene sulfide fiber and polypropylene fiber in different vacuum drum ovens in sequence, and dry them at 120°C for 10 hours. S3. Mix, extrude and granulate the composite raw material fibers composed of polyester fiber, polyamide fiber, polyphenylene sulfide fiber and polypropylene fiber and the compatibilizer according to the mass ratio of 100:5 - 100:10 with a twin-screw extruder, and spin the pellets with a composite spinning machine to obtain the low-temperature dyeable elastic composite fiber filament.

4. A low-temperature dyeable elastic composite fiber filament according to claim 3, characterized in that: In step S1, the rotation speed of the vertical refiner for beating is 25000 r / min, and the pressure is 3.5 N.

5. A low-temperature dyeable elastic composite fiber filament according to claim 3, characterized in that: In step S3, the spinning temperature is 310°C, the winding speed is 120 m / min, the melting holding time is 15 minutes, and the stirring speed is 160 r / min.

6. A processing device for low-temperature dyeable elastic composite fiber filaments according to any one of claims 3, 4 or 5, characterized in that, The fiber defibrator includes a tank body (1), a top cover (2) arranged at the top of the tank body (1), and a feed pipe (21) penetrating and fixed on the top cover (2). An installation groove (11) is arranged on the inner bottom wall of the tank body (1). A sleeve (3) rotatably connected to the inner wall of the installation groove (11) is arranged in the tank body (1). A central rod (4) coaxial with the sleeve (3) is fixed on the inner bottom wall of the installation groove (11). A rotating rod (31) rotatably connected to the sleeve (3) penetrates through the side wall of the sleeve (3). A stirring unit (5) is arranged at one end of the rotating rod (31) away from the central rod (4). A driving assembly (6) for driving the sleeve (3) to rotate is arranged on the top cover (2). A transmission assembly (7) for driving the stirring unit (5) to turn during the rotation of the sleeve (3) is arranged in the sleeve (3). An outlet assembly (8) is arranged at a position close to the bottom of the side wall of the tank body (1).

7. Processing equipment for low-temperature dyeable elastic composite fiber filaments according to claim 6, characterized in that: The driving assembly (6) includes a motor (61) fixed to the top of the top cover (2). The output end of the motor (61) penetrates the top cover (2) and is rotatably connected. The driving assembly (6) further includes a driving gear (62) fixed to the output end of the motor (61), and a driven gear (63) fixedly sleeved on the sleeve (3) and meshing with the driving gear (62). An outer ring (22) matching the upper end of the sleeve (3) is fixed to the bottom of the top cover (2).

8. The processing equipment for the low-temperature dyeable elastic composite fiber filament according to claim 6, characterized in that: The transmission assembly (7) includes a driven bevel gear (71) fixed to one end of the rotating rod (31) and located inside the sleeve (3), and a driving bevel gear (72) fixedly sleeved on the central rod (4) and meshing with the driven bevel gear (71). An inner ring (23) matching the upper end of the central rod (4) is also fixed to the bottom of the top cover (2).

9. An apparatus for processing the low-temperature dyeable elastic composite fiber filaments according to claim 6, characterized in that: The stirring unit (5) includes a stirring frame (51) fixed to the end of the rotating rod (31) away from the central rod (4), and an extension frame (52) hinged to the stirring frame (51). A first fixing plate (521) is fixed to one side of the extension frame (52) away from the hinge between it and the stirring frame (51). A second fixing plate (511) is fixed to one side of the stirring frame (51) away from the hinge between it and the extension frame (52). The second fixing plate (511) corresponds to the position of the first fixing plate (521), and an elastic connecting rod (9) is fixed between the mutually approaching sides of the second fixing plate (511) and the first fixing plate (521). The stirring frame (51) and the extension frame (52) are in mutual contact under the action of the elastic connecting rod (9).

10. An apparatus for processing a low-temperature dyeable elastic composite fiber filament according to claim 6, characterized in that: The inner wall of the installation groove (11) is rotatably connected to the outer wall of the sleeve (3) through a bearing (12). The inner bottom wall of the tank body (1) is inclined. A rotary shaft seal (13) for maintaining sealing and located above the bearing (12) is provided between the inner wall of the installation groove (11) and the outer wall of the sleeve (3). The discharging assembly (8) includes a discharging pipe (81) fixed and communicated with the side wall of the tank body (1), and a solenoid valve (82) arranged on the discharging pipe (81).

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