Preparation method of far-infrared antibacterial multifunctional pillow core material

Abstract

This invention discloses a method for preparing a far-infrared antibacterial multifunctional pillow core material, relating to the technical field of textiles. The method includes the following steps: Principle preparation: mixing, melt-blending, and granulating a polyester substrate, far-infrared mineral powder, and an antibacterial agent to obtain a composite masterbatch; Particle filament formation: melting the composite masterbatch, extruding it through a spinneret, cooling, and stretching it to obtain functional fibers; Fiber pillow making: opening, quantitatively filling, and shaping the fibers to produce a fluffy, uniform, and standard-compliant finished pillow. This far-infrared antibacterial pillow core employs an integrated precision process, ensuring genuine, long-lasting, and safe efficacy from the source. Firstly, by melt-blending and granulating a polyester substrate with nano-grade tourmaline powder and silver ion antibacterial agent using a twin-screw extruder, a functionally uniform and stable composite masterbatch is prepared. This core process permanently locks the functional materials within a polymer carrier, laying a long-lasting foundation.

Description

Technical Field

[0001] This invention relates to the technical field of textiles, and in particular to a method for preparing a far-infrared antibacterial multifunctional pillow core material. Background Technology

[0002] With the fast pace of modern life, sleep quality is receiving increasing attention, making functional bedding a market hotspot. Traditional bedding primarily functions to keep warm and provide support, offering limited benefits for improving healthy sleep. While single-function bedding products, such as antibacterial pillows or far-infrared products, have emerged, most employ finishing coatings or simple mixing processes, resulting in issues like uneven distribution of functional components, easy peeling, poor durability, and difficulty in ensuring safety.

[0003] For example, the effectiveness of products coated with antibacterial agents diminishes sharply after several washes; pillow cores with mechanically mixed mineral particles are prone to dust generation and have limited functionality. Meanwhile, existing technologies mostly focus on integrating single physical or chemical functions, lacking a systematic solution that integrates materials science, fiber engineering, and ergonomics, making it difficult to achieve a long-lasting, stable, and safe multifunctional experience. Consumers have a clear demand for intelligent products that combine hygiene and physiological comfort, requiring an innovative product technology path that starts from the source of materials, using integrated material modification and precision manufacturing processes to achieve a deep integration of functions such as far-infrared temperature-sensing comfort, long-lasting antibacterial protection, and dynamic support. Summary of the Invention

[0004] The purpose of this invention is to provide a method for preparing a far-infrared antibacterial multifunctional pillow core material in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution, comprising the following steps:

[0006] Preparation of the principle: The polyester substrate, far-infrared mineral powder and antibacterial agent are mixed, melt-blended and granulated to obtain the composite masterbatch;

[0007] Particle filamentation: The composite masterbatch is melted, extruded through a spinneret, cooled, and stretched to obtain functional fibers;

[0008] Fiber pillow making: Loosening fibers, quantitatively filling them, and fixing them in shape to make fluffy, uniform, and standard finished pillows.

[0009] Furthermore, the preparation of the principle includes the following steps;

[0010] a: Resin and mineral grinding: Synthetic resin and natural minerals are mechanically ground separately and passed through an 80-200 mesh sieve to obtain resin powder and mineral powder;

[0011] b: Powder mixing: The resin powder, mineral powder, antibacterial agent, and far-infrared emitter are placed in a high-speed mixer at a predetermined mass ratio to obtain a mixed powder;

[0012] c: Melt extrusion: The mixed powder is added to a twin-screw extruder, melted, mixed, and extruded into strip-shaped material at 180-220℃;

[0013] d: Cooling and granulation: After the extruded strip material is cooled and solidified in a water-cooling tank, it is cut into granules with a length of 2-5mm;

[0014] e: Drying and screening: The particles are dried to a moisture content of less than 0.05% and then screened to obtain a finished masterbatch with uniform particle size.

[0015] Furthermore, the filamentation of the particles includes the following steps;

[0016] a: Metering and conveying: The multifunctional composite masterbatch and polyester chips are metered separately according to a specific ratio and then fed together into the screw extruder for melting;

[0017] b: Spinneret extrusion: The melt is pumped through a metering pump to a spinneret with a specific cross-section for extrusion, forming nascent fibers;

[0018] c: Air cooling: The nascent fibers are cooled and cured using a ring of air with a specific air temperature and velocity distribution;

[0019] d: Oiling and bundling: Oiling the fibers and bundling multiple monofilaments together;

[0020] e: Traction stretching: The bundled filaments are subjected to two stages of hot stretching, passing them sequentially through a first specific temperature and stretching ratio and a second specific temperature and stretching ratio;

[0021] f: Heat setting: The process of heat setting the stretched fibers at a specific temperature for a specific time under a specific relaxation degree;

[0022] g: Winding into a tube: Winding the shaped fibers into a tube.

[0023] Furthermore, the fiber pillow-making process includes the following steps;

[0024] a: Raw material preparation and loosening: fiber unpacking, loosening, multi-material mixing, and carding and web laying;

[0025] b: Filling and initial shaping: quantitative filling, quilting;

[0026] c: Finalization and Quality Control: High-temperature setting, quality inspection, packaging and warehousing

[0027] This far-infrared antibacterial pillow core employs an integrated precision process to ensure genuine, long-lasting, and safe efficacy from the source. First, a composite masterbatch is created by melt-blending and granulating a polyester substrate with nano-grade tourmaline powder and silver ion antibacterial agents using a twin-screw extruder. This process produces a functionally uniform and stable masterbatch, permanently locking the functional materials within the polymer carrier and laying a foundation for long-lasting effectiveness. Subsequently, through melt spinning technology, the masterbatch and polyester chips are spun into functional fibers in a specific ratio. During this process, precise profile spinning, gradient cooling, and two-stage hot stretching and setting ensure that each fiber possesses stable far-infrared emission performance (normal emissivity > 0.88) and durable antibacterial capabilities (antibacterial rate > 99%), while also exhibiting excellent fluffiness, breathability, and resilience. Finally, intelligent opening, precise weight filling, and three-dimensional quilting create a zoned support structure. A high-temperature steam fluffing treatment further enhances the product, resulting in a functional and comfortable finished product. The pillow core continuously releases far-infrared rays that resonate with human cells during operation, promoting microcirculation in the neck and shoulders and deeply relaxing muscles. Simultaneously, leveraging the self-electrode effect of tourmaline, it continuously releases negative ions, purifying the sleep microenvironment. Combined with the disruptive effect of silver ions on bacterial cell membranes, this double protection ensures the pillow core's lasting cleanliness and freshness. The entire process strictly controls heavy metals and harmful substances, meeting ecological safety standards. Ultimately, this technology empowers sleep, providing users with an integrated healthy sleep experience that combines stress relief, improved circulation, antibacterial and anti-mite properties, and long-lasting support.

[0028] Furthermore, a far-infrared antibacterial multifunctional pillow core preparation device is provided, wherein the preparation includes a crushing and mixing device, a cooling tank, and a pelletizing device;

[0029] The crushing and mixing device includes a shell, with a first partition plate horizontally fixed in the middle of the shell. Two sets of stirring chambers are located at the bottom of the shell. A feeding channel is fixedly installed at the lower end of each of the two stirring chambers. A first feeding device is installed at the inlet end of the feeding channel. A discharge pipe is fixedly installed at one end of the feeding channel. A heating wire is installed on the outer wall of the discharge pipe, and the outer wall of the discharge pipe is wrapped with heat-insulating cotton. A wire-drawing tube is installed at the end of the discharge pipe, and multiple wire-drawing holes are opened on the outer wall of the wire-drawing tube. A spiral fan blade is rotatably installed at the lower end of the feeding channel. The upper ends of the two stirring chambers are located between... A first feeding port is provided at the location, and a second feeding device is provided at the upper end of the first feeding port. A stirring paddle is rotatably provided inside the two stirring chambers. One end of the stirring paddle is connected to the output shaft of the first motor. Two sets of baffles are fixedly provided at the upper end of the outer shell. A second partition is provided between the two baffles. A lower grinding disc is fixedly provided at the middle position of the upper end of the baffle. An upper grinding disc is provided at the upper end of the lower grinding disc. The middle position of the upper grinding disc is connected to the output shaft of the second motor. Feed hoppers for use with the upper grinding disc are fixedly provided at both ends of the outer shell located at the second partition.

[0030] In practical applications, far-infrared nano-sized ceramic powders such as zirconium, aluminum oxide, and tourmaline powder are fed into two separate feed hoppers along with resin particles. The lower and upper grinding discs work together to crush the infrared materials and resin particles, which then fall onto the upper part of a baffle plate and slide down to the surface of a weighing plate. When the set weight is reached, the second feeding device starts working and opens the weighing plate, allowing the powder on the upper part of the weighing plate to fall into the guide group and then into one of the mixing chambers. After the material preparation is complete, the output shaft of the first motor drives the stirring paddle to rotate, thereby mixing the infrared material powder and resin. The mixed material then falls into the discharge channel and is pushed into the discharge pipe by the spiral fan blades. The resin melts in the discharge pipe and is then pumped to the drawing tube, then into the cooling tank, and finally into the granulation device, thus completing the raw material preparation for subsequent processing.

[0031] Furthermore, the first feeding device includes a fixed plate fixedly installed at the upper opening of the feeding channel, a movable plate slidably installed on the other side of the upper opening of the feeding channel, a first telescopic rod installed at the lower end of the movable plate, and a guide tube of the first telescopic rod fixedly installed at the lower end of the feeding channel.

[0032] In practical applications, after mixing is completed, the first telescopic rod retracts, causing the movable plate to fall, thus creating a height difference between the movable plate and the fixed plate, thereby creating a gap, allowing the material to fall from the mixing chamber into the discharge channel.

[0033] Furthermore, the second feeding device includes a limiting plate fixed to the lower end of the baffle, and a weighing plate that works in conjunction with the second partition and the limiting plate is rotatably installed in the middle of the outer shell. The weighing plate is L-shaped, and a second telescopic rod is hinged to one side of the weighing plate. The other end of the second telescopic rod is hinged to the lower end of the baffle. A guide group is slidably installed at the upper end of the first feeding port, and a third telescopic rod is installed at one end of the guide group.

[0034] The flow guide assembly includes a slide plate that is slidably disposed above the first discharge port. A rectangular through hole is provided in the middle of the slide plate. A feed port is fixedly disposed at the upper end of the slide plate, and a second discharge port is fixedly disposed at the lower end of the slide plate.

[0035] In practical applications, the guide assembly is pushed by the third telescopic rod to connect with one of the mixing chambers. When the powder on the upper part of the weighing plate reaches a certain weight, the second telescopic rod retracts, causing the weighing plate to tilt and pour the powder into one of the mixing chambers. This allows for separate feeding and mixing of the powder into the mixing chambers, improving work efficiency.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] This far-infrared antibacterial pillow core employs an integrated precision process to ensure genuine, long-lasting, and safe efficacy from the source. First, a composite masterbatch is created by melt-blending and granulating a polyester substrate with nano-grade tourmaline powder and silver ion antibacterial agents using a twin-screw extruder. This process produces a functionally uniform and stable masterbatch, permanently locking the functional materials within the polymer carrier and laying a foundation for long-lasting effectiveness. Subsequently, through melt spinning technology, the masterbatch and polyester chips are spun into functional fibers in a specific ratio. During this process, precise profile spinning, gradient cooling, and two-stage hot stretching and setting ensure that each fiber possesses stable far-infrared emission performance (normal emissivity > 0.88) and durable antibacterial capabilities (antibacterial rate > 99%), while also exhibiting excellent fluffiness, breathability, and resilience. Finally, intelligent opening, precise weight filling, and three-dimensional quilting create a zoned support structure. A high-temperature steam fluffing treatment further enhances the product, resulting in a functional and comfortable finished product. The pillow core continuously releases far-infrared rays that resonate with human cells during operation, promoting microcirculation in the neck and shoulders and deeply relaxing muscles. Simultaneously, leveraging the self-electrode effect of tourmaline, it continuously releases negative ions, purifying the sleep microenvironment. Combined with the disruptive effect of silver ions on bacterial cell membranes, this double protection ensures the pillow core's lasting cleanliness and freshness. The entire process strictly controls heavy metals and harmful substances, meeting ecological safety standards. Ultimately, this technology empowers sleep, providing users with an integrated healthy sleep experience that combines stress relief, improved circulation, antibacterial and anti-mite properties, and long-lasting support. Attached Figure Description

[0038] Figure 1 A schematic diagram of the device structure for the principle proposed in this invention;

[0039] Figure 2 This is a schematic diagram of the crushing and mixing device proposed in this invention;

[0040] Figure 3 This is a schematic diagram of the second feeding device proposed in this invention;

[0041] Figure 4 This is a schematic diagram of the flow guide assembly structure proposed in this invention;

[0042] Figure 5 This is a simplified overall process diagram proposed in this invention;

[0043] Figure 6 A simplified process diagram is prepared to illustrate the principle proposed in this invention;

[0044] Figure 7 This is a simplified diagram of the particle filamentation process proposed in this invention;

[0045] Figure 8 This is a simplified diagram of the fiber pillow manufacturing process proposed in this invention.

[0046] In the diagram: 1. Crushing and mixing device; 101. Outer shell; 102. First partition plate; 1021. First discharge port; 103. Discharge channel; 105. Discharge pipe; 106. Spiral fan blade; 107. Wire drawing tube; 108. Stirring paddle; 109. Baffle plate; 110. Lower grinding disc; 111. Upper grinding disc; 112. Second partition plate; 2. Cooling tank; 3. Pelletizing device; 4. First discharge device; 401. Movable plate; 402. Fixed plate; 403. First telescopic rod; 5. Second discharge device; 501. Weighing plate; 502. Second telescopic rod; 503. Guide group; 5031. Slide plate; 5032. Second discharge port; 5033. Feed port; 504. Third telescopic rod; 505. Limiting plate. Detailed Implementation

[0047] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0048] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0049] Reference Figure 1-8 A method for preparing a far-infrared antibacterial multifunctional pillow core material includes the following steps:

[0050] Preparation of the principle: The polyester substrate, far-infrared mineral powder and antibacterial agent are mixed, melt-blended and granulated to obtain the composite masterbatch;

[0051] Particle filamentation: The composite masterbatch is melted, extruded through a spinneret, cooled, and stretched to obtain functional fibers;

[0052] Fiber pillow making: Loosening fibers, quantitatively filling them, and fixing them in shape to make fluffy, uniform, and standard finished pillows.

[0053] Furthermore, the preparation of the principle includes the following steps;

[0054] a: Resin and mineral grinding: Synthetic resin and natural minerals are mechanically ground separately and passed through an 80-200 mesh sieve to obtain resin powder and mineral powder;

[0055] b: Powder mixing: The resin powder, mineral powder, antibacterial agent, and far-infrared emitter are placed in a high-speed mixer at a predetermined mass ratio to obtain a mixed powder;

[0056] c: Melt extrusion: The mixed powder is added to a twin-screw extruder, melted, mixed, and extruded into strip-shaped material at 180-220℃;

[0057] d: Cooling and granulation: After the extruded strip material is cooled and solidified in a water-cooling tank, it is cut into granules with a length of 2-5mm;

[0058] e: Drying and screening: The particles are dried to a moisture content of less than 0.05% and then screened to obtain a finished masterbatch with uniform particle size.

[0059] Furthermore, the filamentation of the particles includes the following steps;

[0060] a: Metering and conveying: The multifunctional composite masterbatch and polyester chips are metered separately according to a specific ratio and then fed together into the screw extruder for melting;

[0061] b: Spinneret extrusion: The melt is pumped through a metering pump to a spinneret with a specific cross-section for extrusion, forming nascent fibers;

[0062] c: Air cooling: The nascent fibers are cooled and cured using a ring of air with a specific air temperature and velocity distribution;

[0063] d: Oiling and bundling: Oiling the fibers and bundling multiple monofilaments together;

[0064] e: Traction stretching: The bundled filaments are subjected to two stages of hot stretching, passing them sequentially through a first specific temperature and stretching ratio and a second specific temperature and stretching ratio;

[0065] f: Heat setting: The process of heat setting the stretched fibers at a specific temperature for a specific time under a specific relaxation degree;

[0066] g: Winding into a tube: Winding the shaped fibers into a tube.

[0067] Furthermore, the fiber pillow-making process includes the following steps;

[0068] a: Raw material preparation and loosening: fiber unpacking, loosening, multi-material mixing (adding as needed), and carding and web laying;

[0069] b: Filling and initial shaping: quantitative filling, quilting;

[0070] c: Finalization and quality control: high-temperature setting, quality inspection, packaging and warehousing.

[0071] This far-infrared antibacterial pillow core employs an integrated precision process to ensure genuine, long-lasting, and safe efficacy from the source. First, a composite masterbatch is created by melt-blending and granulating a polyester substrate with nano-grade tourmaline powder and silver ion antibacterial agents using a twin-screw extruder. This process produces a functionally uniform and stable masterbatch, permanently locking the functional materials within the polymer carrier and laying a foundation for long-lasting effectiveness. Subsequently, through melt spinning technology, the masterbatch and polyester chips are spun into functional fibers in a specific ratio. During this process, precise profile spinning, gradient cooling, and two-stage hot stretching and setting ensure that each fiber possesses stable far-infrared emission performance (normal emissivity > 0.88) and durable antibacterial capabilities (antibacterial rate > 99%), while also exhibiting excellent fluffiness, breathability, and resilience. Finally, intelligent opening, precise weight filling, and three-dimensional quilting create a zoned support structure. A high-temperature steam fluffing treatment further enhances the product, resulting in a functional and comfortable finished product. The pillow core continuously releases far-infrared rays that resonate with human cells during operation, promoting microcirculation in the neck and shoulders and deeply relaxing muscles. Simultaneously, leveraging the self-electrode effect of tourmaline, it continuously releases negative ions, purifying the sleep microenvironment. Combined with the disruptive effect of silver ions on bacterial cell membranes, this double protection ensures the pillow core's lasting cleanliness and freshness. The entire process strictly controls heavy metals and harmful substances, meeting ecological safety standards. Ultimately, this technology empowers sleep, providing users with an integrated healthy sleep experience that combines stress relief, improved circulation, antibacterial and anti-mite properties, and long-lasting support.

[0072] Furthermore, a far-infrared antibacterial multifunctional pillow core preparation device includes a crushing and mixing device 1, a cooling tank 2, and a pelletizing device 3.

[0073] The crushing and mixing device 1 includes a housing 101. A first partition 102 is horizontally fixed in the middle of the housing 101. Two sets of stirring chambers are provided at the bottom of the housing 101. A feeding channel 103 is fixedly provided at the lower end of the two stirring chambers. A first feeding device 4 is installed at the feed end of the feeding channel 103. A discharge pipe 105 is fixedly provided at one end of the feeding channel 103. A heating wire is provided on the outer wall of the end of the discharge pipe 105. The outer wall of the discharge pipe 105 is wrapped with heat insulation cotton. A wire drawing tube 107 is installed at the end of the discharge pipe 105. Multiple wire drawing holes are opened on the outer wall of the wire drawing tube 107. A spiral fan blade 106 is rotatably provided at the lower end of the feeding channel 103. A [missing information - likely a device or structure] is opened at the middle of the upper end of the two stirring chambers. The first feeding port 1021 is provided with a second feeding device 5 at its upper end. The two mixing chambers are rotatably equipped with a stirring paddle 108. One end of the stirring paddle 108 is connected to the output shaft of the first motor. The upper end of the outer shell 101 is fixedly equipped with two sets of baffles 109. A second partition 112 is provided between the two baffles 109. A lower grinding disc 110 is fixedly provided at the middle position of the upper end of the baffle 109. An upper grinding disc 111 is provided at the upper end of the lower grinding disc 110. The middle position of the upper grinding disc 111 is connected to the output shaft of the second motor. The outer shell 101 is fixedly equipped with feeding hoppers at both ends of the second partition 112 for use with the upper grinding disc 111.

[0074] In practical applications, far-infrared nano-sized ceramic powders such as zirconium, aluminum oxide, and tourmaline powder are fed into two separate feed hoppers along with resin particles. The lower grinding disc 110 and the upper grinding disc 111 work together to crush the infrared materials and resin particles, which then fall onto the upper end of the baffle 109. The powder then slides down the upper end of the baffle 109 onto the upper surface of the weighing plate 501. When the set weight is reached, the second feeding device 5 starts working and opens the weighing plate 501, allowing the powder on the upper end of the weighing plate 501 to fall into the guide assembly 503. Inside, after the materials are prepared, the output shaft of the first motor drives the stirring paddle 108 to rotate, thereby mixing the infrared material powder and resin. The mixed material then falls into the discharge channel 103, and the powder particles are pushed into the discharge pipe 105 by the spiral fan blade 106. The resin melts in the discharge pipe 105 and is then pumped to the drawing tube 107, then into the cooling tank 2, and finally into the pelletizing device 3, thus completing the raw material preparation for subsequent processing.

[0075] Furthermore, the first feeding device 4 includes a fixed plate 402 fixedly installed at the upper opening of the feeding channel 103, a movable plate 401 slidably installed on the other side of the upper opening of the feeding channel 103, a first telescopic rod 403 installed at the lower end of the movable plate 401, and a guide tube of the first telescopic rod 403 fixedly installed at the lower end of the feeding channel 103.

[0076] In practical applications, after the mixing is completed, the first telescopic rod 403 retracts, and the first telescopic rod 403 drives the movable plate 401 to fall, thereby creating a height difference between the movable plate 401 and the fixed plate 402, thus creating a gap, so that the material can fall from the mixing chamber into the discharge channel 103.

[0077] Furthermore, the second feeding device 5 includes a limiting plate 505 fixed to the lower end of the baffle 109. A weighing plate 501 that works in conjunction with the second partition 112 and the limiting plate 505 is rotatably installed in the middle position of the outer shell 101. The weighing plate 501 is L-shaped. A second telescopic rod 502 is hinged to one side of the weighing plate 501. The other end of the second telescopic rod 502 is hinged to the lower end of the baffle 109. A guide group 503 is slidably installed at the upper end of the first feeding port 1021. A third telescopic rod 504 is installed at one end of the guide group 503.

[0078] The flow guide assembly 503 includes a slide plate 5031 that is slidably disposed on the upper end of the first discharge port 1021. A rectangular through hole is provided in the middle of the slide plate 5031. A feed port 5033 is fixedly disposed on the upper end of the slide plate 5031, and a second discharge port 5032 is fixedly disposed on the lower end of the slide plate 5031.

[0079] In practical applications, the third telescopic rod 504 pushes the guide group 503 to connect with one of the mixing chambers. When the powder on the upper end of the weighing plate 501 reaches a certain weight, the second telescopic rod 502 retracts, causing the weighing plate 501 to tilt and pour the powder into one of the mixing chambers. This allows for separate feeding and mixing of the mixing chambers, improving work efficiency.

[0080] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for preparing a far-infrared antibacterial multifunctional pillow core material, characterized in that, Includes the following steps: Preparation of the principle: The polyester substrate, far-infrared mineral powder and antibacterial agent are mixed, melt-blended and granulated to obtain the composite masterbatch; Particle filamentation: The composite masterbatch is melted, extruded through a spinneret, cooled, and stretched to obtain functional fibers; Fiber pillow making: Loosening fibers, quantitatively filling them, and fixing them in shape to make fluffy, uniform, and standard finished pillows.

2. The method for preparing a far-infrared antibacterial multifunctional pillow core material according to claim 1, characterized in that, The principle preparation Includes the following steps; a: Resin and mineral grinding: Synthetic resin and natural minerals are mechanically ground separately and passed through an 80-200 mesh sieve to obtain resin powder and mineral powder; b: Powder mixing: The resin powder, mineral powder, antibacterial agent, and far-infrared emitter are placed in a high-speed mixer at a predetermined mass ratio to obtain a mixed powder; c: Melt extrusion: The mixed powder is added to a twin-screw extruder, melted, mixed, and extruded into strip-shaped material at 180-220℃; d: Cooling and granulation: After the extruded strip material is cooled and solidified in a water-cooling tank, it is cut into granules with a length of 2-5mm; e: Drying and screening: The particles are dried to a moisture content of less than 0.05% and then screened to obtain a finished masterbatch with uniform particle size.

3. The method for preparing a far-infrared antibacterial multifunctional pillow core material according to claim 1, characterized in that, The particle filamentation includes the following steps; a: Metering and conveying: The multifunctional composite masterbatch and polyester chips are metered separately according to a specific ratio and then fed together into the screw extruder for melting; b: Spinneret extrusion: The melt is pumped through a metering pump to a spinneret with a specific cross-section for extrusion, forming nascent fibers; c: Air cooling: The nascent fibers are cooled and cured using a ring of air with a specific air temperature and velocity distribution; d: Oiling and bundling: Oiling the fibers and bundling multiple monofilaments together; e: Traction stretching: The bundled filaments are subjected to two stages of hot stretching, passing them sequentially through a first specific temperature and stretching ratio and a second specific temperature and stretching ratio; f: Heat setting: The process of heat setting the stretched fibers at a specific temperature for a specific time under a specific relaxation degree; g: Winding into a tube: Winding the shaped fibers into a tube.

4. The method for preparing a far-infrared antibacterial multifunctional pillow core material according to claim 1, characterized in that, The fiber pillow-making process includes the following steps; a: Raw material preparation and loosening: fiber unpacking, loosening, multi-material mixing, and carding and web laying; b: Filling and initial shaping: quantitative filling, quilting; c: Finalization and quality control: high-temperature setting, quality inspection, packaging and warehousing.

5. The far-infrared antibacterial multifunctional pillow core preparation device according to claim 1, characterized in that, The principle preparation includes a crushing and mixing device (1), a cooling tank (2), and a pelletizing device (3); The crushing and mixing device (1) includes a shell (101), a first partition (102) is horizontally fixed in the middle of the shell (101), two sets of stirring chambers are provided at the bottom of the shell (101), a feeding channel (103) is fixedly provided at the lower end of the two stirring chambers, a first feeding device (4) is installed at the feeding end of the feeding channel (103), a discharge pipe (105) is fixedly provided at one end of the feeding channel (103), a heating wire is provided on the outer wall of the end of the discharge pipe (105), the outer wall of the discharge pipe (105) is wrapped with heat insulation cotton, a wire drawing tube (107) is installed at the end of the discharge pipe (105), a plurality of wire drawing holes are opened on the outer wall of the wire drawing tube (107), a spiral fan blade (106) is rotatably provided at the lower end of the feeding channel (103), and the upper middle of the two stirring chambers is... A first discharge port (1021) is provided, and a second discharge device (5) is provided at the upper end of the first discharge port (1021). A stirring paddle (108) is rotatably provided inside the two stirring chambers. One end of the stirring paddle (108) is connected to the output shaft of the first motor. Two sets of baffles (109) are fixedly provided at the upper end of the outer shell (101). A second partition (112) is provided between the two baffles (109). A lower grinding disc (110) is fixedly provided at the middle position of the upper end of the baffle (109). An upper grinding disc (111) is provided at the upper end of the lower grinding disc (110). The middle position of the upper grinding disc (111) is connected to the output shaft of the second motor. Feed hoppers for use with the upper grinding disc (111) are fixedly provided at both ends of the outer shell (101) located at the second partition (112).

6. The far-infrared antibacterial multifunctional pillow core preparation device according to claim 5, characterized in that, The first feeding device (4) includes a fixed plate (402) fixedly installed at the upper opening of the feeding channel (103), and a movable plate (401) slidably installed on the other side of the upper opening of the feeding channel (103). A first telescopic rod (403) is installed at the lower end of the movable plate (401), and the guide tube of the first telescopic rod (403) is fixedly installed at the lower end of the feeding channel (103).

7. The far-infrared antibacterial multifunctional pillow core preparation device according to claim 5, characterized in that, The second feeding device (5) includes a limiting plate (505) fixed at the lower end of the baffle (109). A weighing plate (501) that works in conjunction with the second partition (112) and the limiting plate (505) is rotatably installed in the middle position of the outer shell (101). The weighing plate (501) is L-shaped. A second telescopic rod (502) is hinged to one side of the weighing plate (501). The other end of the second telescopic rod (502) is hinged to the lower end of the baffle (109). A guide group (503) is slidably installed at the upper end of the first feeding port (1021). A third telescopic rod (504) is installed at one end of the guide group (503).

8. The far-infrared antibacterial multifunctional pillow core preparation device according to claim 7, characterized in that, The flow guide assembly (503) includes a slide plate (5031) slidably disposed on the upper end of the first discharge port (1021). A rectangular through hole is provided in the middle of the slide plate (5031). A feed inlet (5033) is fixedly disposed on the upper end of the slide plate (5031). A second discharge port (5032) is fixedly disposed on the lower end of the slide plate (5031).

Images