Self-adaptive heat and humidity management multilayer structure filling material and preparation method thereof

Abstract

The invention relates to the field of home textiles. The self-adaptive heat and humidity management multi-layer structure filling material comprises a close-fitting sweat discharging layer close to a human body, a middle heating layer located in the middle and an outer side heat insulation layer far away from the human body, the capillary pressure of the close-fitting sweat discharging layer is larger than that of the middle heating layer, and the capillary pressure of the middle heating layer is larger than that of the outer side heat insulation layer. The self-adaptive heat and humidity management multi-layer structure filling material prepared by the preparation method of the self-adaptive heat and humidity management multi-layer structure filling material has better moisture permeability on the basis of keeping the heat retention property.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of home textiles, in particular to a filling material. BACKGROUND

[0002] At present, more and more chemical fibers are used as filling in the market, such as polyester, viscose, soybean and some modified functional fibers, etc. The chemical fiber filling has the advantages of low price and good warmth retention, but also has the disadvantage of poor moisture permeability and hot feeling. SUMMARY

[0003] The purpose of the present application is to provide a multi-layer structure filling material for adaptive thermal and moisture management to solve the above technical problems.

[0004] The purpose of the present application is to provide a preparation method of a multi-layer structure filling material for adaptive thermal and moisture management to prepare a multi-layer structure filling material for adaptive thermal and moisture management.

[0005] The multi-layer structure filling material for adaptive thermal and moisture management, characterized in that it comprises a close-to-body sweat-removing layer, an intermediate heat-generating layer and an outer heat-insulating layer away from the body, the capillary pressure of the close-to-body sweat-removing layer is greater than that of the intermediate heat-generating layer, and the capillary pressure of the intermediate heat-generating layer is greater than that of the outer heat-insulating layer.

[0006] Preferably, the overall unit square gram weight ranges from 100 to 500 g / m2, wherein the square gram weight of the close-to-body sweat-removing layer ranges from 40 to 150 g / m2, the square gram weight of the intermediate heat-generating layer ranges from 50 to 250 g / m2, and the square gram weight of the outer heat-insulating layer ranges from 50 to 220 g / m2.

[0007] Preferably, the main fiber of the close-to-body sweat-removing layer is superfine denier fiber, the content is > 50%, and the fiber fineness is 0.5D-2D.

[0008] Preferably, the main fiber of the intermediate heat-generating layer is medium fineness high crimp fiber, the content is greater than 50%, and the fiber fineness is 2D-4D.

[0009] Preferably, the main fiber of the outer heat-insulating layer is coarse denier fiber, the content is greater than 50%, and the fiber fineness is 4D-9D.

[0010] Preferably, the main fiber of the close-to-body sweat-removing layer, the intermediate heat-generating layer and the outer heat-insulating layer is hollow fiber with a special cross-section.

[0011] The preparation method of the multi-layer structure filling material for adaptive thermal and moisture management, characterized in that it comprises the following steps: Step one, opening and mixing cotton: according to the function design of different layers, three layers of fibers and low melting point fibers are respectively put into three cotton mixing machines according to the designed ratio for preliminary opening and mixing, and then conveyed to a carding machine for secondary carding. Step two, carding laying: the fibers opened by the three groups of carding machines enter the corresponding laying machines, and are laid according to the designed square gram weight. First, the first layer of padding laid by the first group is conveyed forward to the second group position to start laying the second layer of padding, and continues to be conveyed to the third group position to start laying the third layer of padding. The three layers of padding are stacked together into the next step; Step three, bonding and reinforcing: the three-layer composite flake enters the bonding and reinforcing area, can be selected to be sprayed with glue and then enters the oven area for high-temperature setting and polishing. The oven temperature is 130-160℃, and the polishing temperature is 160-180℃. Subsequent edge trimming, inspection and packaging are performed.

[0012] The preparation method of the adaptive thermal and moisture management multi-layer structure filling material obtains an adaptive thermal and moisture management multi-layer structure filling material, including a close-to-body moisture removal layer, an intermediate heat generation layer, and an outer side heat insulation layer. The square gram weight of the close-to-body moisture removal layer is 80g / m2, and the main fibers adopt the following components by mass percentage: 35% two-dimensional 0.9D solid core silicon polyester, 25% two-dimensional 1.2D solid core silicon polyester, 25% three-dimensional 3D hollow silicon polyester, and 15% 2D low-melting-point fiber. The square gram weight of the intermediate heat generation layer is 150g / m2, and the main fibers adopt the following components by mass percentage: 20% two-dimensional 2.5D solid core silicon polyester, 40% three-dimensional 3D hollow silicon polyester, 24% three-dimensional 7D four-hole silicon polyester, and 16% 2D low-melting-point fiber. The square gram weight of the outer side heat insulation layer is 120g / m2, and the main fibers adopt the following components by mass percentage: 30% three-dimensional 6D hollow silicon polyester, 25% three-dimensional 7D seven-hole fiber, 30% three-dimensional 3D hollow silicon polyester fiber, and 15% 2D low-melting-point fiber.

[0013] The preparation method of the adaptive thermal and moisture management multi-layer structure filling material obtains an adaptive thermal and moisture management multi-layer structure filling material, including a close-to-body moisture removal layer, an intermediate heat generation layer, and an outer side heat insulation layer. The square gram weight of the close-to-body moisture removal layer is 100g / m2, and the main fibers adopt the following components by mass percentage: 35% four-leaf clover type 1.4D solid core moisture absorption and sweat release polyester, 25% two-dimensional 1.5D far infrared polyester, 25% three-dimensional 3D hollow silicon antibacterial polyester, and 15% 2D low-melting-point fiber. The square gram weight of the intermediate heat generation layer is 160g / m2, and the main fibers adopt the following components by mass percentage: 35% three-dimensional 3D hollow silicon antibacterial polyester, 35% 3D PCM viscose, 14% three-dimensional 7D seven-hole silicon polyester, and 16% 2D low-melting-point fiber. The square gram weight of the outer heat insulation layer is 140 g / m2, and the main body fiber adopts the following components with mass percentage: 30% three-dimensional 5D aerogel polyester, 35% three-dimensional 7D four-hole fiber, 20% three-dimensional 3D hollow silica-containing antibacterial polyester, and 15% 2D low-melting-point fiber.

[0014] Beneficial effects: The present application forms a static air storage space through a layer-by-layer structure, blocks the conduction, convection and radiation of heat to the external environment, thereby maintaining the temperature in the nest and improving the warmth retention of the product. The present application utilizes the principle of capillary wicking effect and designs a gradient structure with fine inside and coarse outside: in use, the inner capillary is relatively thin, generates a relatively strong capillary pressure to adsorb moisture and sweat, and transitions to a relatively thick capillary or gap outward, reduces the resistance to promote the lateral diffusion of sweat, utilizes the gradient difference to drive the rapid migration of moisture, and avoids retention on the inside, thereby improving the moisture removal effect of the product. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The present application is part of the flow chart of the preparation method. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific drawings.

[0017] The adaptive thermal and moisture management multi-layer structure filling material includes a close-to-body sweat removal layer. The close-to-body sweat removal layer has the strongest capillary pressure and is closest to the human body. On the basis of providing preliminary warmth retention, it quickly absorbs the water vapor and sweat emitted by the body and transfers it outward to keep the nest dry. The close-to-body sweat removal layer has a square gram weight in the range of 40-150 g / m2 and is the thinnest among the three layers.

[0018] The main body fiber of the close-to-body sweat removal layer adopts ultrafine denier fiber with a content > 50% and a fiber fineness of 0.5D-2D. The fiber cross section of the main body fiber of the close-to-body sweat removal layer preferably adopts a special-shaped structure such as a cross shape, Y shape, etc. Preferably, a micro-hollow ultrafine denier fiber with a hollow degree > 10% is adopted. This fiber has a large specific surface area and small pores that can generate strong capillary pressure to achieve moisture absorption and moisture transfer. Preferably, hydrophilic fiber is adopted. This fiber has good moisture absorption and cooperates with the capillary effect to absorb moisture, and the special-shaped cross section forms complex capillary channels to accelerate moisture transfer. At the same time, hollow fibers and special-shaped fibers constitute the skeleton of this layer to store a certain amount of static air to achieve warmth retention. According to the requirements, part of the far-infrared functional heating fiber can be added, which has a high infrared emissivity and a low thermal conductivity, can efficiently absorb the heat emitted by the human body, and convert it into far-infrared radiation to be re-radiated back to the human body, thereby producing a warm effect.

[0019] The adaptive thermal wet management multi-layer structure filling material further comprises an intermediate heat generating layer. The capillary pressure of the intermediate heat generating layer is less than that of the skin layer. The intermediate heat generating layer receives the moisture from the skin layer and efficiently transmits the moisture to the outermost layer, serving as a moisture transfer buffer zone. The square gram weight of the intermediate heat generating layer ranges from 50 to 250 g / m2, and is the thickest among the three layers.

[0020] The main fibers of the intermediate heat generating layer are medium-fineness high-curl fibers, and the content is greater than 50%. The fiber fineness is 2D-4D, and the capillary pressure formed is less than that of the skin layer to attract sweat from the high-pressure area of the skin layer to the outside. The hollow degree of the fiber is preferably greater than 20%, and the hollow structure provides a sweat transfer channel and stores air for warmth. Preferably, high-loft fibers are used to improve the loft effect and fluffy hand feeling of the batt. Preferably, heat-generating fibers such as moisture-absorbing heat-generating acrylic, viscose, and pcm temperature regulating fibers are used to increase the heating function on the basis of the basic warmth function, and to increase the inner warmth effect.

[0021] The adaptive thermal wet management multi-layer structure filling material further comprises an outer heat insulation layer. The outer heat insulation layer has the smallest capillary pressure. The outer heat insulation layer receives the sweat transferred from the intermediate layer and quickly evaporates it to the external environment, while serving as a light-weight temperature-locked warmth layer that blocks the internal heat loss and blocks the entry of external cold air. The square gram weight of the outer heat insulation layer ranges from 50 to 220 g / m2, and the thickness is less than or equal to that of the intermediate layer and greater than that of the skin layer.

[0022] The main fibers of the outer heat insulation layer are selected to be coarse fibers, and the content is greater than 50%. The fiber fineness is 4D-9D, and the coarse fibers form large pores with the weakest capillary action to reduce the suction. When the moisture reaches this layer, it can easily evaporate into the air. The fiber cross-section can be optimized to be shaped to increase the moisture evaporation channel. The hollow degree of the fiber is preferably greater than 20%, which increases the loft structure for temperature insulation and moisture conduction. Preferably, aerogel fibers are added. Aerogel is more than 90% air, so it has extremely high thermal insulation and light weight, which gives the fiber extremely high thermal insulation effect. It is used in the outermost layer to maximize the internal heat loss and block the entry of external cold air, thereby maintaining the warmth effect.

[0023] The three-layer material adopts a fiber cross-section with a shaped structure, which can be the same or different. If different, the inner layer is preferably selected to be cross-shaped, trilobal, or four-leaf clover-shaped for faster moisture transfer. The intermediate and upper layers can be selected to be slightly hollow-shaped to increase warmth.

[0024] The adaptive thermal wet management multi-layer structure filling material has a unit square gram weight ranging from 100 to 500 g / m2.

[0025] The production process of the adaptive heat and moisture management multi-layer structure filling material includes mixing opening, carding laying, bonding reinforcement, inspection and packaging, and the related equipment includes a cotton mixing machine, an opening machine, a carding machine, a laying machine and an oven calender. The adaptive heat and moisture management multi-layer structure filling material is integrally formed in multiple layers, and the multi-layer structure is processed and shaped after being laid and gathered. The cotton mixing machine, the opening machine, the carding machine and the laying mechanism form a group of front machines, and several groups of front machines are arranged side by side when several layers of structure filling materials are needed. Here, three layers of structure are taken as an example. The first group is arranged at the outermost side to produce a laying close-fitting layer filling, the second group is arranged in the middle to produce a laying middle layer filling, and the third group is arranged at the inner side to produce a laying outermost layer filling.

[0026] The preparation method of the adaptive heat and moisture management multi-layer structure filling material includes the following steps, as shown in Figure 1 Step one, opening and cotton mixing: according to the function design of different layers, three layers of fibers and low-melting-point fibers are respectively put into three cotton mixing machines according to the design ratio for initial mixing and opening, and are uniformly sent to the carding machine for secondary carding; Step two, carding and laying: the fibers opened by the three groups of carding machines enter the corresponding laying machines and are laid according to the designed square gram weight. First, the first layer filling after the first group of laying is conveyed to the second group position to start laying the second layer filling, and is continuously conveyed to the third group position to start laying the third layer filling. The three layers of fillings are stacked together and enter the next step; Step three, bonding and reinforcement: the three-layer composite batt enters the bonding and reinforcement area, can be selected to be sprayed with glue, and then enters the oven area for high-temperature shaping and calendering. The oven temperature is 130-160℃, and the calendering temperature is 160-180℃. Subsequent edge trimming, inspection and packaging are performed. The glue is sprayed on both sides of the upper and lower layers. There are sprayers before and after the oven. For example, the uppermost layer of batt is fixed by being sprayed with glue and passing through the oven. After coming out of the oven, the lower layer becomes the upper layer and enters the oven again. At the end of the oven, there is also a sprayer. The front and back sides can control different glue amounts and calendering degrees. The entering of the oven can make the low-melting-point fibers in the batt melt to play a fixing and bonding role. Example 1

[0027] A preparation method of an adaptive heat and moisture management multi-layer structure filling material: Step one, opening and cotton mixing: the close-fitting layer fibers are put into the No. 1 cotton mixing machine according to the following ratio (for reference, as shown in Figure 1 ​), 35% two-dimensional 0.9D solid core silicone polyester; 25% two-dimensional 1.2D solid core silicone polyester; 25% three-dimensional 3D hollow silicone polyester; 15% 2D low-melting-point fiber. The middle layer fibers are put into No. 2 mixing cotton machine according to the following ratio: 20% two-dimensional 2.5D solid core silicone polyester; 40% three-dimensional 3D hollow silicone polyester; 24% three-dimensional 7D four-hole silicone polyester; 16% 2D low-melting-point fiber. The outermost layer fibers are put into No. 3 mixing cotton machine according to the following ratio: 30% three-dimensional 6D hollow silicone polyester; 25% three-dimensional 7D seven-hole fiber; 30% three-dimensional 3D hollow silicone polyester fiber; 15% 2D low-melting-point fiber. Each mixing cotton machine mixes and opens the respective fibers, which are then transferred into the carding machine for two-way carding mixing. Step two, carding and laying: No. 1 laying machine receives the uniformly mixed fibers from No. 1 carding machine and performs cross-laying according to the square gram weight design; the fibers are transferred to No. 2 laying machine, which receives the mixed fibers from No. 2 carding machine, and the underlayer batt is transferred to the position and cross-laid on the upper layer; the two layers of filling are transferred to No. 3 laying machine, which receives the mixed fibers from No. 3 carding machine, and the batt is transferred to the position and cross-laid on the upper layer to form a three-layer batt.

[0028] Step three, bonding and reinforcement: the three-layer batt formed by laying is transferred into the bonding and reinforcement area, the surface of the batt is sprayed with glue, and then transferred into the oven, with the oven temperature set to 160°C; the surface of the batt is then ironed to a smooth finish, with the ironing temperature set to 180°C; after ironing, the surface of the batt is smoother, and subsequent cutting, inspection, and packaging are performed. There is a special high-temperature roller outside the oven, which can make the surface fibers of the batt flat, and the front and back can be ironed, or not ironed according to the design, or with different degrees of ironing, such as fabric that is not worried about fiber drilling.

[0029] This embodiment uses basic polyester fiber matching, which is cost-effective and can achieve the functions of warmth and humidity regulation.

[0030] The adaptive thermal and moisture management multi-layer structure filling material of the embodiment includes a close-to-body moisture removal layer, an intermediate heat generation layer, and an outer side heat insulation layer, and the unit square gram weight is 350 g / m2. The square gram weight of the close-to-body moisture removal layer ranges from 80 g / m2, and the main fiber is composed of 35% two-dimensional 0.9D solid core silicon polyester, 25% two-dimensional 1.2D solid core silicon polyester, 25% three-dimensional 3D hollow silicon polyester, and 15% 2D low-melting-point fiber. The square gram weight of the intermediate heat generation layer is 150 g / m2, and the main fiber is composed of 20% two-dimensional 2.5D solid core silicon polyester, 40% three-dimensional 3D hollow silicon polyester, 24% three-dimensional 7D four-hole silicon polyester, and 16% 2D low-melting-point fiber. The square gram weight of the outer side heat insulation layer is 120 g / m2, and the main fiber is composed of 30% three-dimensional 6D hollow silicon polyester, 25% three-dimensional 7D seven-hole fiber, 30% three-dimensional 3D hollow silicon polyester fiber, and 15% 2D low-melting-point fiber. Embodiment 2

[0031] A preparation method of an adaptive thermal and moisture management multi-layer structure filling material: Step one, opening and mixing cotton: the close-to-body layer fiber is put into No. 1 mixing cotton machine (for reference, as shown in the figure) according to the following ratio, 35% clover-shaped 1.4D solid core moisture absorption and sweat release polyester, 25% two-dimensional 1.5D far infrared polyester, 25% three-dimensional 3D hollow silicon antibacterial polyester, and 15% 2D low-melting-point fiber. The intermediate layer fiber is put into No. 2 mixing cotton machine according to the following ratio, 35% three-dimensional 3D hollow silicon antibacterial polyester, 35% 3D PCM viscose, 14% three-dimensional 7D seven-hole silicon polyester, and 16% 2D low-melting-point fiber. The outermost layer fiber is put into No. 3 mixing cotton machine according to the following ratio, 30% three-dimensional 5D aerogel polyester, 35% three-dimensional 7D four-hole fiber, 20% three-dimensional 3D hollow silicon antibacterial polyester, and 15% 2D low-melting-point fiber. Each mixing cotton machine mixes and opens the respective fibers, which are then transferred into a carding machine for two-way carding mixing.

[0032] Step two, carding and laying: No. 1 laying machine receives the uniformly mixed fibers from No. 1 carding machine, and cross-laying is performed according to the square gram weight design; the close-to-body layer fluff is transferred to the upper layer and cross-laid after moving forward on the conveyor belt to No. 2 laying machine, which receives the mixed fibers from No. 2 carding machine; the intermediate layer fluff is transferred to the upper layer and cross-laid after moving forward on the conveyor belt to No. 3 laying machine, which receives the mixed fibers from No. 3 carding machine; the three-layer filling is formed after cross-laying. Cross-laying refers to the fact that the laying guide roller moves back and forth to lay one layer of fluff, while the lower conveyor belt moves forward, so that the fluffs are cross-stacked to increase the thickness, rather than being completely stacked.

[0033] Step three, adhesion reinforcement: the three-layered fluff formed by the net laying is transmitted into the adhesion reinforcement area, the fluff surface is sprayed with glue and enters the oven, the oven temperature is set to 150°C, and the fluff surface is polished, the polishing temperature is 180°C, the fluff surface is smoother after polishing, and subsequent size cutting, inspection and packaging are carried out.

[0034] The embodiment selects functional fibers, adds special-shaped moisture-conducting and far-infrared heating fibers in the close-fitting layer to keep warm, adds pcm viscose fibers in the middle layer to increase moisture-absorbing and heating functions and temperature control function, adds aerogel fibers in the outermost layer to enhance the heat-insulating and warm-keeping effect, and adds antibacterial fibers to increase the antibacterial performance and keep healthy and safe.

[0035] The adaptive thermal and moisture management multi-layer structure filling material of the embodiment is multi-layered, including a close-fitting moisture-removing layer, a middle heating layer, and an outer heat-insulating layer, and the unit square gram weight is 400 g / m2. The square gram weight of the close-fitting moisture-removing layer ranges from 100 g / m2, and the main fibers are as follows: 35% four-leaf 1.4D solid-core moisture-absorbing and sweat-releasing polyester, 25% two-dimensional 1.5D far-infrared polyester, and other fibers: 25% three-dimensional 3D hollow silica-containing antibacterial polyester, and 15% 2D low-melting-point fiber. The square gram weight of the middle heating layer is 160 g / m2, and the main fibers are as follows: 35% three-dimensional 3D hollow silica-containing antibacterial polyester, 35% 3D PCM viscose, and other fibers: 14% three-dimensional 7D seven-hole silica-containing polyester, and 16% 2D low-melting-point fiber. The square gram weight of the outer heat-insulating layer is 140 g / m2, and the main fibers are as follows: 30% three-dimensional 5D aerogel polyester, 35% three-dimensional 7D four-hole fiber, and other fibers: 20% three-dimensional 3D hollow silica-containing antibacterial polyester, and 15% 2D low-melting-point fiber.

[0036] Comparative example The existing preparation method of the filling material is as follows: step one, opening and mixing cotton: the fibers are put into a mixing machine according to the following ratio, 30% two-dimensional 1.2D solid-core silica-containing polyester, 30% three-dimensional 3D hollow silica-containing polyester, 24% three-dimensional 7D four-hole silica-containing polyester, and 16% 2D low-melting-point fiber. The mixed and opened fibers are transmitted into a carding machine through a transmission pipeline for two-way carding mixing.

[0037] Step two, carding and net laying: the carding machine receives the uniformly mixed fibers from the carding machine, cross-lays the fibers according to the designed square gram weight of 400 g / m2, and forms a fluff net.

[0038] Step three, adhesion reinforcement: the three-layered fluff formed by the net laying is transmitted into the adhesion reinforcement area, the fluff surface is sprayed with glue and enters the oven, the oven temperature is set to 150°C, and the fluff surface is polished, the polishing temperature is 180°C, the fluff surface is smoother after polishing, and subsequent size cutting, inspection and packaging are carried out.

[0039] The filled materials obtained in the above three embodiments are tested according to the following standards: square gram weight: GB / T 24218.1-2009, CRO value / thermal resistance: GB / T 35762, moisture permeability: GB / T 12704.1, water absorption: GB / T 21655.1, antibacterial property: GB / T 20944.3, far infrared property: GB / T 35127, moisture absorption and heat generation: GB / T 29866. The test results are as follows: From the above test data, it can be clearly seen that the present application has good moisture permeability on the basis of maintaining warmth.

[0040] Note: The hollow degree of the present application is the percentage of the hollow area of the fiber cross section to the area of the fiber cross section. The test method is referred to FZ / T 50002-2013 "Chemical fiber profile test method".

[0041] The basic principles and main features of the present application and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A multilayer structured filling material for adaptive thermal and humidity management, characterized in that, It includes a close-fitting moisture-wicking layer, a middle heating layer, and an outer heat insulation layer away from the body. The capillary pressure of the close-fitting moisture-wicking layer is greater than that of the middle heating layer, and the capillary pressure of the middle heating layer is greater than that of the outer heat insulation layer.

2. The multilayer structure filling material for adaptive thermal and humidity management according to claim 1, characterized in that, The overall unit weight per square meter ranges from 100 to 500 g / m², with the weight per square meter of the close-fitting sweat-wicking layer ranging from 40 to 150 g / m², the weight per square meter of the middle heating layer ranging from 50 to 250 g / m², and the weight per square meter of the outer insulation layer ranging from 50 to 220 g / m².

3. The multilayer structure filling material for adaptive thermal and humidity management according to claim 1, characterized in that, The main fibers of the close-fitting sweat-wicking layer are made of ultra-fine denier fibers with a content of >50% and a fiber fineness of 0.5D-2D.

4. The multilayer structure filling material for adaptive thermal and humidity management according to claim 1, characterized in that, The main fiber of the intermediate heating layer is a medium-fine, highly crimped fiber with a content of more than 50% and a fiber fineness of 2D-4D.

5. The multilayer structure filling material for adaptive thermal and humidity management according to claim 1, characterized in that, The main fiber of the outer heat insulation layer is coarse denier fiber, with a content of more than 50% and a fiber fineness of 4D-9D.

6. The multilayer structure filling material for adaptive thermal and humidity management according to any one of claims 1-5, characterized in that, The main fibers of the close-fitting sweat-wicking layer, the middle heating layer, and the outer heat insulation layer are all hollow fibers with irregular cross-sections.

7. A method for preparing a multilayer structured filling material with adaptive thermal and humidity management, characterized in that, Includes the following steps: Step 1: Opening and blending: According to the functional design of different layers, the three layers of fibers and low melting point fibers are fed into three blending machines according to the proportion design for initial opening and blending, and then conveyed to the carding machine for secondary carding to achieve uniformity. Step 2, Combing and Web Laying: After the fibers are opened by the three combing machines, they enter the corresponding web laying machines and are laid according to the designed square gram weight. First, the first layer of filling after the first group of web laying is conveyed forward by the conveyor belt to the second group position to start the second layer of filling. It continues to be conveyed to the third group position to start the third layer of filling. The three layers of filling are superimposed and enter the next step together. Step 3, Bonding and Reinforcement: The three-layer composite wadding enters the bonding and reinforcement area. It can be sprayed with adhesive and then placed in the oven for high-temperature setting and heat treatment. The oven temperature is 130-160℃ and the heat treatment temperature is 160-180℃. Afterwards, the edges are trimmed, inspected and packaged.

8. The method for preparing the multilayer structure filling material with adaptive thermal and humidity management according to claim 7, characterized in that, The prepared adaptive heat and humidity management multilayer structure filling material includes a close-fitting moisture wicking layer, an intermediate heating layer, and an outer heat insulation layer; The weight per square meter of the close-fitting moisture-wicking layer is 80 g / m², and the main fiber composition is as follows: 35% two-dimensional 0.9D solid core silicone polyester, 25% two-dimensional 1.2D solid core silicone polyester, 25% three-dimensional 3D hollow silicone polyester, and 15% 2D low melting point fiber. The intermediate heating layer has a square weight of 150g / ㎡, and the main fiber uses the following composition by mass percentage: 20% two-dimensional 2.5D solid silicone polyester, 40% three-dimensional 3D hollow silicone polyester, 24% three-dimensional 7D four-hole silicone polyester, and 16% 2D low melting point fiber. The outer heat insulation layer has a square weight of 120g / ㎡, and the main fiber uses the following composition by mass percentage: 30% three-dimensional 6D hollow silicone polyester, 25% three-dimensional 7D seven-hole fiber, 30% three-dimensional 3D hollow silicone polyester fiber, and 15% 2D low melting point fiber.

9. The method for preparing a multilayer structured filling material with adaptive thermal and humidity management according to claim 7, characterized in that, The prepared adaptive heat and humidity management multilayer structure filling material includes a close-fitting moisture wicking layer, an intermediate heating layer, and an outer heat insulation layer; The weight per square meter of the close-fitting moisture-wicking layer is 100g / ㎡, and the main fiber uses the following composition by mass percentage: 35% clover-shaped 1.4D solid core moisture-wicking polyester, 25% two-dimensional 1.5D far-infrared polyester, 25% three-dimensional 3D hollow silicone antibacterial polyester, and 15% 2D low-melting-point fiber. The intermediate heating layer has a square weight of 160g / ㎡, and the main fiber uses the following composition by mass percentage: 35% three-dimensional hollow silicone antibacterial polyester, 35% 3D PCM viscose, 14% three-dimensional 7D seven-hole silicone polyester, and 16% 2D low melting point fiber. The outer heat insulation layer has a square weight of 140 g / m², and the main fiber uses the following composition by mass percentage: 30% three-dimensional 5D aerogel polyester, 35% three-dimensional 7D four-hole fiber, 20% three-dimensional 3D hollow silicone antibacterial polyester, and 15% 2D low melting point fiber.

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