A distribution structure of down product thermal insulation interlayer anti-drilling and flame-retardant and a manufacturing method thereof

Abstract

This invention discloses a down-proof, flame-retardant, and heat-insulating sandwich structure and manufacturing method for down products, including a five-layer and a seven-layer type: the five-layer type consists of, from the inside out, a chemical fiber or silk fiber cloth, a glass fiber cloth, a basalt or ceramic fiber cloth, a down filling layer, and then the above three layers are symmetrically composited; the seven-layer type, based on the five-layer type, adds a natural flame-retardant and static-free cotton and linen fiber cloth on the innermost outermost layer, achieving electrical insulation and double fire resistance. An electrostatic field is formed by the friction between the chemical fiber / silk cloth and the inorganic fiber cloth, causing the down to be adsorbed in the middle and blocked by like-particle repulsion, effectively preventing down leakage; simultaneously, the inorganic fire resistance of glass fiber, basalt, or ceramic fiber and the natural flame retardancy of cotton and linen are used to construct a fire barrier. The manufacturing method includes the preparation of the triboelectric layer, sandwich assembly, and pressing fixation, using sewing or hot pressing processes to ensure that the electrostatic and flame-retardant properties are not compromised. This structure combines down leakage prevention, flame retardancy, warmth, and comfort, and the process is simple, making it suitable for various down products.

Description

Technical Field

[0001] This invention belongs to the field of down product processing technology, specifically relating to a distribution structure and manufacturing method of a down insulation interlayer for down products that prevents down leakage and is flame-retardant. It is mainly applied to the insulation interlayer of various down products such as down jackets, down comforters, and down pillows. The core solution is to address the problem of down leakage during the use of down products, while giving the down interlayer excellent fire-retardant properties, and preserving the insulation performance and comfort of down products. Background Technology

[0002] Down products are widely used in cold seasons and everyday home settings due to their excellent thermal insulation properties and lightweight, soft feel. Their core insulation component is the down interlayer, which achieves its insulating effect by filling the interlayer with down. However, current down products generally suffer from two major drawbacks: First, down feathers easily escape from the gaps in the interlayer fabric, affecting not only the product's appearance and lifespan but also potentially irritating the skin and impacting the user experience. Second, down is a flammable material, and existing down product interlayer structures lack effective fire-retardant designs, making them easily ignited by open flames, posing a serious safety hazard.

[0003] In existing technologies, there are three main ways to solve the problem of down leakage in down products: The first is to use dense fabric to make the inner and outer layers of the down sandwich layer, which reduces the pore size of the fabric to prevent down from escaping. However, this method reduces the breathability of the down sandwich layer and increases the thickness and stiffness of the fabric, affecting the lightness and comfort of the down product. The second is to add an anti-down leakage lining to the down sandwich layer, which uses multiple layers of fabric to prevent down from escaping. However, adding a lining increases processing costs and is prone to delamination with the down and outer fabric. After long-term use, down leakage will still occur, and the anti-down leakage effect is limited and has poor durability. The third is to treat the fabric surface with a coating to prevent down from escaping. However, the coating completely blocks the breathability of the down sandwich layer, causing the down to become damp and clump together, losing its insulation performance. At the same time, the coating is easy to peel off, and the anti-down leakage effect is difficult to maintain in the long term.

[0004] Current technologies for improving the flame retardant properties of down products mostly involve spraying a flame retardant coating onto the fabric surface. This method not only further reduces the breathability and softness of the fabric, but also suffers from problems such as easy coating peeling and flame retardant effect decay over time. At the same time, existing anti-feather-drilling solutions and flame retardant solutions are independent of each other, making it difficult to achieve integrated design. Using them together will significantly increase the processing cost and thickness of down products, seriously affecting their performance.

[0005] Therefore, there is an urgent need for a down interlayer distribution structure and corresponding manufacturing method that can effectively prevent down from escaping, give the down interlayer excellent and long-lasting fire-retardant properties, retain the heat insulation properties, lightweight comfort of down products, and be simple to process and cost-controllable, so as to solve the shortcomings of existing technologies. Summary of the Invention

[0006] To address the problems of poor down penetration prevention in existing down products, lack of effective fire-retardant design, difficulty in integrating down penetration prevention and flame retardant solutions, impact on insulation performance and user comfort, and high processing costs, this invention provides a distribution structure and manufacturing method for a down insulation layer with down penetration prevention and flame retardant properties. By constructing a specific fiber cloth layered structure, the electrostatic synergistic effect generated by friction between different materials is utilized to achieve highly efficient down penetration prevention. At the same time, relying on the flame-retardant properties of the fiber cloth itself, an integrated fire-retardant barrier is constructed, achieving the dual effects of down penetration prevention and flame retardancy. This preserves the insulation performance of down and the lightweight comfort of the product. Furthermore, the processing technology is simple, the cost is controllable, and it is compatible with existing down product processing systems. Technical solution

[0007] To achieve the above objectives, the present invention adopts the following technical solution, which fully corresponds to the technical features of claims 1-10, as detailed below: I. Distribution Structure of Down Insulation Layer for Down Products: This layer is designed to prevent down leakage and is flame-retardant. This invention provides two core distribution structures that can be flexibly selected according to the usage scenario, insulation requirements and flame retardant rating of down products. Both structures rely on electrostatic synergy to prevent down from penetrating, while relying on the material of the fiber cloth itself to build a fireproof and flame-retardant barrier. The core difference lies in whether or not an electrically insulating and naturally flame-retardant cotton or linen fiber cloth is added.

[0008] 1. Five-layer distribution structure (corresponding to claim 1): The distribution structure consists of five layers from the inside out: a first layer of chemical fiber cloth or silk fiber cloth, a first layer of glass fiber cloth, a basalt fiber cloth or ceramic fiber cloth, a down filling layer, a second layer of glass fiber cloth, a second layer of basalt fiber cloth or ceramic fiber cloth, and a second layer of chemical fiber cloth or silk fiber cloth. The first layer of chemical fiber cloth or silk fiber cloth is combined with the first layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth to form the first triboelectric layer. The second layer of chemical fiber cloth or silk fiber cloth is combined with the second layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth to form the second triboelectric layer. The first triboelectric layer, the down filling layer and the second triboelectric layer are sequentially bonded and fixed together, and the down filling layer is sandwiched between the first layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth and the second layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth, to ensure that the down filling layer is in full contact with the two layers of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth, and at the same time, the glass fiber cloth, basalt fiber cloth or ceramic fiber cloth forms a fully enclosed, airtight fireproof and flame-retardant barrier for the down filling layer.

[0009] Its core principle for preventing down leakage is as follows: the first layer of chemical fiber cloth or silk fiber cloth rubs against the first layer of glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth to generate opposite charges and attract each other; the second layer of chemical fiber cloth or silk fiber cloth rubs against the second layer of glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth to generate opposite charges and attract each other, ensuring that the triboelectric layer itself has a tight structure and is not prone to delamination gaps; at the same time, the down in the down filling layer rubs against the first layer of glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth, the second layer of glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth respectively. Friction of the ceramic fiber cloth generates opposite charges that attract each other, firmly adhering the down to the surfaces of the two layers of glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth, thus restricting down movement. Furthermore, the down in the down filling layer, through friction with the first and second layers of glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth, generates the same charges as the first and second layers of chemical fiber cloth or silk fiber cloth, causing the down in the down filling layer to repel the chemical fiber cloth or silk fiber cloth. Through the electrostatic synergy of "self-adsorption and fixation of the triboelectric layer, adsorption of down by the glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth, and repulsion of down by the chemical fiber cloth or silk fiber cloth," a double adsorption and single repulsion barrier is formed to effectively prevent down from escaping from the distribution structure.

[0010] Its core fire-retardant principle is: glass fiber cloth, basalt fiber cloth or ceramic fiber cloth is an inorganic fire-resistant fiber cloth made of inorganic friction-generating flame-retardant fiber with a melting point of over 1000℃. It does not burn or melt when exposed to open flame, forming a fully enclosed, sealed fire-retardant barrier for the down filling layer sandwiched within it. This effectively blocks the contact between open flame and flammable down, preventing the down from being ignited and achieving basic fire-retardant protection for the down filling layer.

[0011] 2. Seven-layer distribution structure (corresponding to claim 2): The distribution structure consists of seven layers from the inside out: a first layer of non-static cotton and linen fiber cloth, a first layer of chemical fiber cloth or silk fiber cloth, a first layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth, a down filling layer, a second layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth, a second layer of chemical fiber cloth or silk fiber cloth, and a second layer of non-static cotton and linen fiber cloth. The first layer of triboelectric layer is formed by combining the first layer of cotton and linen fiber cloth, the first layer of chemical fiber cloth or silk fiber cloth with the first layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth. The second layer of triboelectric layer is formed by combining the second layer of cotton and linen fiber cloth, the second layer of chemical fiber cloth or silk fiber cloth with the second layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth. The first layer of triboelectric layer, the down filling layer and the second layer of triboelectric layer are sequentially bonded and fixed, and the down filling layer is sandwiched between the first layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth and the second layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth. The two layers of cotton and linen fiber cloth are located on the innermost and outermost sides of the distribution structure, respectively.

[0012] Its anti-feather-drilling principle is consistent with the five-layer distribution structure. The fire-retardant principle is as follows: fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth forms a closed inorganic fire-resistant and flame-retardant barrier for the down filling layer. Cotton and linen fiber cloth has natural flame retardancy and is located on the innermost outer side of the distribution structure. Together with fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth, it forms a double fire-retardant barrier, further improving the flame retardant level, effectively blocking the conduction of open flame, and preventing the down comforter from igniting. The additional technical effect is that the first and second layers of cotton and linen fiber cloth are both non-static materials, which can achieve electrical insulation isolation between the inner and outer fabrics of down products, avoid the static electricity generated by the distribution structure from attracting external dust and hair, and at the same time prevent static electricity from irritating human skin, improving the comfort of down products. It is especially suitable for people with sensitive skin, outdoor, public places, and other down products with higher requirements for insulation and flame retardancy.

[0013] 3. Preferred features of the distribution structure (corresponding to claims 3-5): (1) Consistency of fiber cloth specifications (claim 3): The two layers of cotton and linen fiber cloth (if any, i.e., in the seven-layer structure) in the distribution structure are consistent in specifications, the two layers of chemical fiber cloth or silk fiber cloth are consistent in specifications, and the two layers of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth are consistent in specifications, so as to ensure that the distribution structure is uniformly stressed and the static electricity generation effect is consistent, while ensuring the continuity of the flame retardant layer, avoiding the local static electricity effect weakness or the flame retardant protection dead corner due to specification differences, thus causing the risk of hair drilling and flammability; at the same time, each fiber cloth is directly contacted and composited, ensuring that the fiber cloth can fully rub to generate static electricity, ensuring the stability of the static electricity synergy effect, and not affecting the overall protective effect of the flame retardant layer.

[0014] (2) Triboelectric layer composite method (claims 4-5): The composite method of each fiber cloth in the triboelectric layer can be selected from two core types, both of which are linear distribution composite. This can ensure that each layer of fiber cloth is tightly fixed, and avoid the reduction of the air permeability of the fiber cloth due to large-area composite. It does not affect the heat preservation and comfort performance of down products, and at the same time, it does not damage the structural integrity of the flame retardant layer, thus ensuring the flame retardant protection effect.

[0015] The first type is a composite stitching with distributed lines (claim 4): that is, each layer of fiber cloth is fixedly connected by a stitching method with distributed lines. The stitching lines can be uniformly distributed straight lines, grid lines, etc. The stitching density should be such that it does not damage the structure of the fiber cloth and ensures that each layer is tightly attached. This method is simple to process, low in cost, and compatible with the existing sewing process of down products. It is also convenient for subsequent down filling and overall fixation. The sewing process does not affect the flame retardant properties of glass fiber cloth, basalt fiber cloth, ceramic fiber cloth, and cotton and linen fiber cloth.

[0016] The second method is hot-pressing composite with linearly distributed hot melt adhesive (claim 5): that is, each layer of fiber cloth is fixedly connected by hot-pressing with linearly distributed hot melt adhesive. The hot melt adhesive is selected as an environmentally friendly, non-toxic, high-temperature resistant, and high-strength adhesive (such as polyurethane hot melt adhesive). The linearly distributed hot melt adhesive can ensure a firm bond while leaving sufficient air gaps. The hot-pressing parameters can be adapted to the hot-pressing requirements in subsequent manufacturing methods to avoid damage to the structure, triboelectric properties, and flame-retardant properties of the fiber cloth during the hot-pressing process.

[0017] II. Manufacturing Method of Down Insulation Layer for Down Products (Preventing Down Leakage and Retardant) This invention provides two manufacturing methods, corresponding to the two distribution structures mentioned above. The processes are simple and the steps are clear, making them compatible with existing down product processing equipment without requiring additional complex processing devices. While achieving the anti-feather-leakage effect, the flame-retardant layer's properties are ensured to remain undamaged throughout the process, as detailed below: 1. Method for fabricating a five-layer distribution structure (corresponding to claims 6-7): This method is used to prepare the five-layer distribution structure described in claim 1, and specifically includes the following steps: Step 1: Prepare the triboelectric layer. Cut chemical fiber cloth or silk fiber cloth and glass fiber cloth, basalt fiber cloth or ceramic fiber cloth according to the preset specifications. Composite the chemical fiber cloth or silk fiber cloth with glass fiber cloth, basalt fiber cloth or ceramic fiber cloth to make two sets of triboelectric layers with the same structure. Each set of triboelectric layers consists of one layer of chemical fiber cloth or silk fiber cloth and one layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth. The composite method can be the line distribution sewing composite as described in claim 4 or the line distribution hot melt adhesive hot pressing composite as described in claim 5. During the composite process, strictly control the process parameters to ensure that the flame retardant properties of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth are not damaged.

[0018] Step 2: Assemble the distribution structure. Take one set of triboelectric layers as the inner layer, with the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth of this set facing upwards. Evenly fill the surface of the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth with down. After filling, smooth it to ensure that the down is evenly distributed and free of lumps, forming a down filling layer. This ensures that the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth provides flame-retardant protection to the down filling layer without any blind spots. Then take another set of triboelectric layers as the outer layer, with the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth of this set facing downwards, covering the surface of the down filling layer. After precise alignment, sandwich the down filling layer between the two sets of triboelectric layers. At this time, the chemical fiber cloth or silk fiber cloth of the two sets of triboelectric layers are located at the innermost and outermost sides of the distribution structure, respectively, ensuring that the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth forms a full-coverage flame-retardant protection for the down filling layer.

[0019] Step 3: Fixing and shaping. The assembled distribution structure is integrally stitched and pressed together, with the pressing pressure controlled at 0.3-0.8MPa and the pressing time at 15-40s. This ensures that each layer is tightly bonded without looseness or gaps, preventing weakened electrostatic effect or the appearance of hair-drilling gaps due to loose bonding, while also ensuring the structural integrity of the flame-retardant layer. After pressing, the anti-hair-drilling effect can be achieved by utilizing the synergistic effect of electrostatics. The fire-retardant properties of glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth are used to achieve fire resistance and flame retardancy for the down filling layer. The principle of the electrostatic effect is based on the physical phenomenon that the friction between the glass rod and the fur generates charges and attracts paper scraps. By utilizing the difference in the binding ability of different materials for extranuclear electrons, electron transfer occurs during friction, generating an electrostatic effect of opposite charges attracting and like charges repelling, thus constructing an anti-hair-drilling barrier.

[0020] Step 4: Position each layer using stitching lines. The stitching density should be such that each layer is fixed without damaging the flame-retardant structure of the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth.

[0021] Preferably (corresponding to claim 7): In step 1, the composite method of chemical fiber cloth or silk fiber cloth with glass fiber cloth, basalt fiber cloth or ceramic fiber cloth is hot pressing composite. The hot pressing temperature is controlled at 100-150℃ and the hot pressing time is controlled at 10-30s. These parameters can ensure that the two layers of fiber cloth are firmly bonded and avoid high temperature damage to the softness of chemical fiber cloth or silk fiber cloth and the insulation, triboelectric and flame retardant properties of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth. In step 2, the filling thickness of the down filling layer is 5-15mm. The filling thickness can be flexibly adjusted according to the heat preservation requirements of the down product. After filling, it must be flattened to ensure that the down is evenly distributed and free of lumps, and to avoid uneven electrostatic adsorption or dead corners in flame retardant protection caused by local down accumulation, which may lead to down leakage and flammability hazards.

[0022] 2. Method for fabricating a seven-layer distribution structure (corresponding to claims 8-10): This method is used to prepare the seven-layer distribution structure described in claim 2, and specifically includes the following steps: Step 1: Prepare the triboelectric layer. Cut cotton and linen fiber cloth, chemical fiber cloth or silk fiber cloth and glass fiber cloth, basalt fiber cloth or ceramic fiber cloth according to the preset specifications. Composite the cotton and linen fiber cloth, chemical fiber cloth or silk fiber cloth with glass fiber cloth, basalt fiber cloth or ceramic fiber cloth to make two sets of triboelectric layers with the same structure. Each set of triboelectric layers consists of one layer of cotton and linen fiber cloth, one layer of chemical fiber cloth or silk fiber cloth and one layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth. The composite method can be the line distribution sewing composite as described in claim 4 or the line distribution hot melt adhesive hot pressing composite as described in claim 5. During the composite process, ensure that the cotton and linen fiber cloth is on the outermost side, the glass fiber cloth, basalt fiber cloth or ceramic fiber cloth is on the innermost side, and the chemical fiber cloth or silk fiber cloth is sandwiched between the two. During the composite process, strictly control the process parameters to ensure that the flame retardant properties of the glass fiber cloth, basalt fiber cloth or ceramic fiber cloth and the cotton and linen fiber cloth are not damaged.

[0023] Step 2: Assemble the distribution structure. Take one set of triboelectric layers as the inner layer, with the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth of this set of triboelectric layers facing upwards. Evenly fill the surface of the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth with down. After filling, smooth the surface to ensure that the down is evenly distributed and free of clumps, forming a down filling layer. This ensures that the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth, along with the cotton and linen fiber cloth, provide comprehensive flame-retardant protection for the down filling layer. Then take another set of triboelectric layers... The outer layer is positioned so that the glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth of the triboelectric layer faces downwards and covers the surface of the down filling layer. After precise alignment, the down filling layer is sandwiched between the glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth of the two triboelectric layers. At this time, the cotton and linen fiber cloth of the two triboelectric layers are located at the innermost and outermost sides of the distribution structure, respectively, ensuring that the glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth and the cotton and linen fiber cloth work together to form a double fireproof and flame-retardant protection for the down filling layer.

[0024] Step 3: Fixing and shaping. The assembled distribution structure is integrally stitched and pressed together, controlling the pressing pressure to 0.3-0.8MPa and the pressing time to 15-40s, ensuring that each layer is tightly bonded without looseness or gaps. After pressing, on the one hand, electrostatic synergy is used to prevent down feathers from penetrating, and on the other hand, the innermost and outermost cotton and linen fiber cloths provide electrical insulation. The inorganic fire-resistant and flame-retardant properties of glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth are combined with the natural flame-retardant properties of cotton and linen fiber cloth to form a double fire-retardant barrier, achieving highly efficient fire-retardant protection for the down filling layer. The principle of the electrostatic effect is consistent with the five-layer distribution structure, based on the physical phenomenon that the friction between the glass rod and the fur generates charge and attracts paper scraps. The characteristics of different materials generating static electricity through friction are used to construct the down feather-proof barrier.

[0025] Step 4: Position each layer using stitching lines. The stitching process should not damage the structural integrity of the flame-retardant layer to ensure the continuity of the double flame-retardant protection.

[0026] Preferably (corresponding to claims 9-10): In step 1, the composite method of cotton and linen fiber cloth, chemical fiber cloth or silk fiber cloth with glass fiber cloth, basalt fiber cloth or ceramic fiber cloth is hot pressing composite, the hot pressing temperature is controlled at 100-150℃, and the hot pressing time is controlled at 10-30s, to ensure that the three layers of fiber cloth are firmly bonded, while not damaging the properties of each fiber cloth (insulation and natural flame retardancy of cotton and linen, softness and triboelectric properties of silk, insulation, triboelectric properties and inorganic fire-resistant and flame-retardant properties of glass fiber); In step 2, the filling thickness of the down filling layer is 5-15mm, and after filling, it is smoothed to ensure that the down is evenly distributed and free of lumps, to ensure the uniformity of electrostatic adsorption and the comprehensiveness of double flame-retardant protection, and to avoid local down leakage and flammability hazards.

[0027] The beneficial effects of this invention are: Compared with the prior art, the present invention has the following beneficial effects, all of which correspond to the technical features of the claims, highlighting the dual core advantages of preventing hair from seeping out and fire retardancy, while also taking into account the characteristics of heat preservation, comfort, and convenient processing: 1. The anti-feather-leaking effect is significant and long-lasting, with excellent fire-retardant properties, fundamentally solving two core pain points of down products: This invention relies on the synergistic effect of electrostatics to construct an anti-feather-leaking barrier. Through the triple action of the triboelectric layer's self-adhesion fixation, the adsorption of down by glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth, and the repulsion of down by chemical fiber cloth or silk fiber cloth, the movement of down is fundamentally restricted, preventing down from escaping. The anti-feather-leaking effect is far superior to existing methods such as dense fabrics, added linings, and coating treatments. Moreover, the electrostatic effect can be maintained for a long time, and the anti-feather-leaking effect can still be maintained stably after multiple washes without easily diminishing. Simultaneously, this invention uses glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth as the core structural layer. Fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth are inorganic fire-resistant and flame-retardant fibers with inherent properties of non-combustibility, high temperature resistance, and flame retardancy. Their melting point is as high as 1000℃ or more. They do not burn or melt when exposed to open flames, and can completely wrap the flammable down filling layer to form a sealed fireproof and flame-retardant barrier, effectively blocking the contact between open flames and down and preventing the down quilt from igniting. The cotton and linen fiber cloth added to the seven-layer structure has natural flame retardancy and can form a double fire protection with fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth, further improving the flame retardancy level and greatly improving the safety of down products. This fills the technical gap of existing anti-down-drilling solutions that lack fireproof and flame-retardant properties, and realizes an integrated design of anti-down-drilling and flame retardancy.

[0028] 2. While providing fire resistance and preventing down leakage, this invention perfectly preserves the insulation and comfort of down products without sacrificing performance: In the distribution structure of this invention, each fiber cloth adopts a linear distribution composite method, leaving sufficient breathable gaps. This does not block the breathability of the down filling layer, prevents the down from getting damp and clumping, and ensures that the insulation performance of the down is not affected. At the same time, the chemical fiber cloth, silk fiber cloth, and cotton and linen fiber cloth (if applicable) all have soft and skin-friendly properties. The glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth are fixed together with the chemical fiber cloth or silk fiber cloth, without directly contacting human skin, thus not affecting the wearing comfort of down products. Moreover, the overall structure is lightweight and does not increase the weight of down products. Unlike existing flame-retardant coatings and down-proof coating solutions, this invention does not require the addition of any chemical coatings. It relies on the material of the fiber cloth itself to achieve fire resistance and down leakage prevention, fundamentally avoiding problems such as reduced breathability, hardening of the hand feel, and coating peeling caused by coatings. It achieves a balance of four major performance characteristics: fire resistance, down leakage prevention, insulation, and comfort.

[0029] 3. Flexible structure and wide adaptability to meet the performance requirements of different scenarios: It offers two distribution structures, five-layer and seven-layer, which can be flexibly selected according to the usage scenario, insulation requirements, and fire retardant rating of down products. The five-layer structure is suitable for ordinary down products, with high efficiency in preventing down leakage and basic fire retardant performance. The seven-layer structure is suitable for use scenarios with higher requirements for insulation and fire retardancy, such as people with sensitive skin, outdoor, public places, and children's products, achieving electrical insulation isolation and double fire retardant protection. Both can be applied to various down products such as down jackets, down comforters, down pillows, and down sleeping bags. At the same time, the composite method of the fiber cloth can be flexibly selected by sewing or hot pressing, which is compatible with the existing processing technology of down products. No new complicated equipment is required, and different processes can ensure the stability of flame retardancy and electrostatic effects.

[0030] 4. Simple processing and controllable cost, achieving integrated fireproofing, flame retardancy, and down-proofing with no additional processing costs: The chemical fiber cloth, silk fiber cloth, glass fiber cloth, basalt fiber cloth, ceramic fiber cloth, cotton and linen fiber cloth, and down used in this invention are all conventional down product processing materials, readily available and inexpensive. The flame-retardant properties of glass fiber cloth, basalt fiber cloth, ceramic fiber cloth, and cotton and linen fiber cloth are inherent properties. Selecting these types of fiber cloths does not require additional fireproofing and flame-retardant treatment processes; the fireproofing and flame-retardant effect can be achieved based on their own materials. Compared with the existing combination scheme of "down-proof fabric + flame-retardant coating", the processing cost and process complexity are significantly reduced. The manufacturing method is clear and the process is mature. Mass production can be achieved using existing processing equipment without the need for additional complex processing devices. During the processing, only conventional process parameters need to be controlled to ensure the down-proofing and flame-retardant effects. The processing cost is lower than existing high-end down-proofing technology or separate flame-retardant treatment technology, and it has good market promotion value.

[0031] 5. High safety, environmental protection, and durability, meeting the development needs of high-quality down products: All selected fiber fabrics are environmentally friendly and non-toxic materials, meeting the safety standards for down products, non-irritating, and will not harm human skin; the cotton and linen fiber fabric in the seven-layer structure can achieve electrical insulation, avoiding static electricity attracting dust and irritating the skin, further improving the safety of use; the glass fiber fabric, basalt fiber fabric, ceramic fiber fabric, and cotton and linen fiber fabric all have excellent washability and wear resistance, and can maintain stable fire-retardant performance and structural strength after multiple washes, without problems such as fire-retardant performance degradation or fiber fabric delamination, extending the service life of down products; at the same time, this invention does not add any chemical flame retardants, coatings, or other chemical additives, and there is no release of harmful substances, making it more environmentally friendly and in line with the green, safe, and healthy development trend of the modern textile industry. Attached Figure Description

[0032] Figure 1 is a cross-sectional schematic diagram of the five-layer distribution structure in Embodiment 1 of the present invention.

[0033] Figure 2 is a cross-sectional schematic diagram of the seven-layer distribution structure in Embodiment 2 of the present invention.

[0034] Explanation of reference numerals in the attached drawings: 1-First layer of chemical fiber cloth or silk fiber cloth, 2-First layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth (electrostatic confinement flame retardant layer), 3-Down filling layer, 4-Second layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth (electrostatic confinement flame retardant layer), 5-Second layer of chemical fiber cloth or silk fiber cloth, 6-Interlayer stitching line, 7-First layer of cotton and linen fiber cloth (low electrostatic accumulation flame retardant material layer), 8-Second layer of cotton and linen fiber cloth (low electrostatic accumulation flame retardant material layer). Detailed Implementation

[0035] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0036] Example 1 (Five-layer structure) As shown in Figure 1, the distribution structure of this embodiment is as follows from the inside to the outside: a first chemical fiber cloth or silk fiber cloth layer (1), a first glass fiber cloth, basalt fiber cloth or ceramic fiber cloth layer (2), a down filling layer (3), a second glass fiber cloth, basalt fiber cloth or ceramic fiber cloth layer (4), and a second chemical fiber cloth or silk fiber cloth layer (5). The first glass fiber cloth, basalt fiber cloth or ceramic fiber cloth layer (2) and the second glass fiber cloth, basalt fiber cloth or ceramic fiber cloth layer (4) are electrostatic confinement flame retardant layers, forming a fully enclosed, sealed fireproof and flame retardant barrier for the down filling layer (3).

[0037] The production method is as follows: Step 1: Select chemical fiber cloth or silk fiber cloth and glass fiber cloth, basalt fiber cloth or ceramic fiber cloth of the same specifications, and hot press the two together at 100°C for 20 seconds to make two sets of identical triboelectric layers. The hot pressing parameters ensure that the two fiber cloths are firmly bonded and do not damage the flame retardant properties of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth and the triboelectric properties of chemical fiber cloth or silk fiber cloth.

[0038] Step 2: Take one set of triboelectric layers as the inner layer, lay it flat with the glass fiber cloth, basalt fiber cloth or ceramic fiber cloth layer (2) facing upwards, and fill it evenly with white duck down containing 90% down, controlling the filling thickness to 10mm. After filling, flatten it to ensure that the down is evenly distributed and without lumps, forming a down filling layer (3), ensuring that the glass fiber cloth, basalt fiber cloth or ceramic fiber cloth provides flame-retardant protection for the down filling layer (3) without dead angles; then take another set of triboelectric layers as the outer layer, lay it with the glass fiber cloth, basalt fiber cloth or ceramic fiber cloth layer (4) facing downwards, and cover it on the down filling layer (3), so that the down filling layer (3) is completely wrapped by two layers of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth.

[0039] Step 3: Feed the above five-layer structure into the press and press it under a pressure of 0.5MPa for 30 seconds to make each layer fit tightly and fix it, ensuring the stability of electrostatic synergy and the structural integrity of the flame retardant layer.

[0040] Step 4: Position each layer using stitching lines, ensuring the stitching lines are evenly distributed without damaging the flame-retardant structure of the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth.

[0041] The five-layer structure of this embodiment was tested and no down feathers escaped after multiple washes. When exposed to open flame, the fiberglass cloth, basalt fiber cloth or ceramic fiber cloth layer can effectively block the contact between the open flame and the down feathers, and the down feathers do not ignite. In addition, the interlayer has good air permeability, and the down feathers do not become damp and clump together. The insulation performance and softness are maintained excellently.

[0042] Example 2 (Seven-layer structure) As shown in Figure 2, based on Example 1, a first cotton and linen fiber cloth layer (7) is added to the innermost side and a second cotton and linen fiber cloth layer (8) is added to the outermost side, forming a seven-layer structure. The first cotton and linen fiber cloth layer (7) and the second cotton and linen fiber cloth layer (8) are low static electricity accumulation flame retardant material layers with natural flame retardancy. Together with the first glass fiber cloth, basalt fiber cloth or ceramic fiber cloth layer (2) and the second glass fiber cloth, basalt fiber cloth or ceramic fiber cloth layer (4), they form a double fireproof and flame retardant barrier.

[0043] The cotton and linen fiber fabric layer is fixed to the adjacent triboelectric layer by linear stitching. The stitching process does not damage the structural integrity of the flame-retardant layer. The cotton and linen fiber fabric layer not only provides electrical insulation and improves the comfort of direct contact, but also achieves a secondary enhancement of flame-retardant protection. The stitching lines also ensure a tight fit between the layers.

[0044] Based on Example 1, step 1 is adjusted as follows: Select cotton and linen fiber cloth, chemical fiber cloth or silk fiber cloth and glass fiber cloth, basalt fiber cloth or ceramic fiber cloth of the same specifications, and hot press the three together at 100°C for 20 seconds to form two identical triboelectric layers. The cotton and linen fiber is arranged on the outermost side, and the glass fiber cloth, basalt fiber cloth or ceramic fiber is arranged on the innermost side. The chemical fiber cloth or silk fiber cloth is sandwiched between the two. The hot pressing process ensures that the properties of the three types of fiber cloth are not damaged. The remaining steps are the same as in Example 1, with a down filling thickness of 10 mm, a pressing pressure of 0.5 MPa, and a pressing time of 30 seconds.

[0045] The seven-layer structure of this embodiment, after testing, not only possesses the anti-hair-drilling, fire-retardant, heat-insulating, and comfortable properties of Embodiment 1, but also exhibits excellent electrostatic insulation, with no electrostatic dust adsorption. Furthermore, when exposed to open flame, the dual flame-retardant barrier formed by the cotton and linen fiber cloth layer and the glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth layer can effectively delay the conduction of open flame. The flame-retardant rating is significantly improved compared to the five-layer structure, making it suitable for people with sensitive skin and for application scenarios with high flame-retardant requirements.

Claims

1. A distribution structure for the heat-insulating down interlayer in down products, characterized in that, It includes an inner constraint unit, a down filling layer, and an outer constraint unit, which are stacked sequentially from the inside out. The inner constraint unit includes a first textile electrification layer and a first electrostatic constraint flame retardant layer stacked sequentially from the inside to the outside. The outer constraint unit includes a second electrostatic constraint flame-retardant layer and a second textile electrifying layer stacked sequentially from the inside to the outside. The down filling layer is sandwiched between the first electrostatically constrained flame-retardant layer and the second electrostatically constrained flame-retardant layer; wherein, both the first and second electrostatically constrained flame-retardant layers are fabric layers containing inorganic triboelectric flame-retardant fibers, the inorganic triboelectric flame-retardant fibers are inorganic fire-resistant fibers with high melting points, do not burn or drip when exposed to open flames, and can form a sealed fireproof and flame-retardant barrier; the first and second textile electrified layers include fabric layers containing protein fibers and fabric layers containing organic fibers; the inorganic triboelectric flame-retardant fibers generate opposite charges with the protein fibers and down when rubbed, and the inorganic triboelectric flame-retardant fibers can form a fireproof and flame-retardant protection for the down filling layer; wherein, the inorganic triboelectric flame-retardant fibers include glass fibers, basalt fibers or ceramic fibers; the protein fibers are silk fibers; The first textile electrification layer is formed by combining the chemical fiber cloth or silk fiber cloth of the first textile electrification layer with the first layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth to form a first triboelectric layer, and the second textile electrification layer is formed by combining the chemical fiber cloth or silk fiber cloth of the second textile electrification layer with the second layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth to form a second triboelectric layer. The first triboelectric layer, the down filling layer, and the second triboelectric layer are sequentially bonded and fixed together, and the down filling layer is sandwiched between the first layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth and the second layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth. The first layer of chemical fiber cloth or silk fiber cloth rubs against the first layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth to generate opposite charges and attract each other; the second layer of chemical fiber cloth or silk fiber cloth rubs against the second layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth to generate opposite charges and attract each other. The down in the down filling layer generates opposite charges and attracts each other by friction with the first layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth, and the second layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth. The down in the down filling layer rubs against the first layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth, the second layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth, and generates the same charge as the first layer of chemical fiber cloth or silk fiber cloth, the second layer of chemical fiber cloth or silk fiber cloth, so that the down in the down filling layer and the chemical fiber cloth or silk fiber cloth repel each other. The electrostatic synergy prevents down from penetrating the distribution structure, and the inorganic fire-resistant and flame-retardant properties of the glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth provide fire-resistant and flame-retardant protection for the down filling layer.

2. A distribution structure for the heat-insulating down interlayer in down products, characterized in that, The low static electricity accumulation flame retardant material layer is a cotton fabric layer, a linen fabric layer, or a chemical fiber fabric layer treated with antistatic properties, and the cotton fabric layer or the linen fabric layer has natural flame retardancy. It includes a low electrostatic accumulation flame retardant material layer, an inner constraint unit, a down filling layer, and an outer constraint unit, which are stacked sequentially from the inside to the outside. The inner constraint unit includes a first textile electrification layer and a first electrostatic constraint flame retardant layer stacked sequentially from the inside to the outside. The outer constraint unit includes a second electrostatic constraint flame retardant layer, a second textile electrification layer, and a second low electrostatic accumulation flame retardant material layer, which are stacked sequentially from the inside to the outside. The down filling layer is sandwiched between the first electrostatic confinement flame-retardant layer and the second electrostatic confinement flame-retardant layer; wherein, both the first and second electrostatic confinement flame-retardant layers are fabric layers containing inorganic triboelectric flame-retardant fibers, the inorganic triboelectric flame-retardant fibers are inorganic fire-resistant fibers with high melting points, do not burn or drip when exposed to open flames, and can form a sealed fireproof and flame-retardant barrier; the first and second textile electrified layers include fabric layers containing protein fibers; the inorganic triboelectric flame-retardant fibers generate opposite charges with the protein fibers and down when rubbed, and the inorganic triboelectric flame-retardant fibers, together with the low electrostatic accumulation flame-retardant material layer, form a double fireproof and flame-retardant protection; wherein, the inorganic triboelectric flame-retardant fibers include glass fibers, basalt fibers, or ceramic fibers; the protein fibers are silk fibers; The first textile electrification layer is formed by combining the chemical fiber cloth or silk fiber cloth of the first textile electrification layer with the first layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth to form a first triboelectric layer, and the second textile electrification layer is formed by combining the chemical fiber cloth or silk fiber cloth of the second textile electrification layer with the second layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth to form a second triboelectric layer. The distribution structure consists of seven layers from the inside out: a first layer of non-static cotton and linen fiber cloth, a first layer of chemical fiber cloth or silk fiber cloth, a first layer of glass fiber cloth, a basalt fiber cloth or ceramic fiber cloth, a down filling layer, a second layer of glass fiber cloth, a second layer of basalt fiber cloth or ceramic fiber cloth, a second layer of chemical fiber cloth or silk fiber cloth, and a second layer of non-static cotton and linen fiber cloth. The first layer of cotton and linen fiber cloth, the first layer of chemical fiber cloth or silk fiber cloth, and the first layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth are combined to form the first layer of triboelectric layer; the second layer of cotton and linen fiber cloth, the second layer of chemical fiber cloth or silk fiber cloth, and the second layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth are combined to form the second layer of triboelectric layer. The first triboelectric layer, the down filling layer, and the second triboelectric layer are sequentially bonded and fixed together, and the down filling layer is sandwiched between the first layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth and the second layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth. The first layer of chemical fiber cloth or silk fiber cloth rubs against the first layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth to generate opposite charges and attract each other; the second layer of chemical fiber cloth or silk fiber cloth rubs against the second layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth to generate opposite charges and attract each other. The down in the down filling layer generates opposite charges and attracts each other by friction with the first layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth, and the second layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth. The down in the down filling layer rubs against the first layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth, the second layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth, and generates the same charge as the first layer of chemical fiber cloth or silk fiber cloth, the second layer of chemical fiber cloth or silk fiber cloth, so that the down in the down filling layer and the chemical fiber cloth or silk fiber cloth repel each other. The electrostatic synergy prevents down from escaping from the distribution structure. The first and second layers of cotton and linen fiber cloth provide electrical insulation for the inner and outer fabrics of the down product. The inorganic fire-resistant and flame-retardant properties of glass fiber cloth, basalt fiber cloth, or ceramic fiber cloth, combined with the natural flame-retardant properties of cotton and linen fiber cloth, form a double fire-resistant and flame-retardant barrier, achieving highly efficient fire-resistant and flame-retardant protection for the down filling layer.

3. The distribution structure according to claim 1 or 2, characterized in that, The distribution structure has two layers of cotton and linen fiber cloth (if any) with the same specifications, two layers of chemical fiber cloth or silk fiber cloth with the same specifications, and two layers of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth with the same specifications. All the fiber cloths are in direct contact with each other to ensure stable frictional electricity generation between the fiber cloths, while ensuring the protective continuity of the flame retardant layer.

4. The distribution structure according to claim 1 or 2, characterized in that, The composite method of each fiber cloth in the triboelectric layer is a linear distribution sewing composite, that is, each layer of fiber cloth is fixedly connected by a linear distribution sewing method. The linear distribution composite can reserve air-permeable gaps and does not damage the structural integrity and flame-retardant protection effect of each flame-retardant layer.

5. The distribution structure according to claim 1 or 2, characterized in that, The composite method of each fiber cloth in the triboelectric layer is a linear distribution hot melt adhesive hot pressing composite, that is, each layer of fiber cloth is fixed and connected by a linear distribution hot melt adhesive hot pressing method. The hot melt adhesive is selected as an environmentally friendly, non-toxic, high temperature resistant, soft and high bonding strength type to avoid damaging the flame retardant properties and triboelectric properties of the fiber cloth during the hot pressing process.

6. A method for manufacturing a down-insulating, down-filled interlayer that prevents down leakage and is flame-retardant, used to prepare the distribution structure described in claim 1, characterized in that, Includes the following steps: Step 1: Prepare two sets of triboelectric layers with the same structure. Each set of triboelectric layers is made of a layer of chemical fiber cloth or silk fiber cloth and a layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth. During the composite process, ensure that the flame retardant properties of the glass fiber cloth, basalt fiber cloth or ceramic fiber cloth are not damaged. Step 2: Assemble the distribution structure. Take one set of triboelectric layers as the inner layer, with the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth facing upwards. Evenly fill the surface with down and smooth it to form a down filling layer. Then take another set of triboelectric layers as the outer layer, with the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth facing downwards, covering the surface of the down filling layer. The down filling layer is sandwiched between the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth of the two sets of triboelectric layers, ensuring that the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth forms a fully enclosed flame-retardant protection for the down filling layer. Step 3: Sew and press the assembled distribution structure together, controlling the pressing pressure to be 0.3-0.8MPa and the pressing time to be 15-40s, so that each layer is tightly bonded. Utilize electrostatic synergy to prevent down from penetrating, and use the inorganic fire-resistant and flame-retardant properties of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth to achieve fire resistance and flame retardancy for the down filling layer. Step 4: Position each layer using stitching lines, ensuring the stitching process does not compromise the structural integrity of the flame-retardant layer; The principle of the electrostatic effect is based on the physical phenomenon that the friction between the glass rod and the fur generates an electric charge and attracts paper scraps.

7. The manufacturing method according to claim 6, characterized in that, In step 1, the composite method of chemical fiber cloth or silk fiber cloth with glass fiber cloth, basalt fiber cloth or ceramic fiber cloth is hot pressing. The hot pressing temperature is 100-150℃ and the hot pressing time is 10-30s. These hot pressing parameters can ensure that the two layers of fiber cloth are firmly bonded and will not damage the flame retardant properties of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth and the triboelectric properties of chemical fiber cloth or silk fiber cloth. In step 2, the filling thickness of the down filling layer is 5-15mm. After filling, it is ensured that the down is evenly distributed and free of lumps, ensuring that the glass fiber cloth, basalt fiber cloth or ceramic fiber cloth provides flame retardant protection to the down filling layer without any blind spots.

8. A method for manufacturing a down-insulating, down-filled interlayer that prevents down leakage and is flame-retardant, used to prepare the distribution structure described in claim 2, characterized in that, Includes the following steps: Step 1: Prepare two sets of triboelectric layers with the same structure. Each set of triboelectric layers is made of a layer of cotton and linen fiber cloth, a layer of chemical fiber cloth or silk fiber cloth and a layer of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth. During the composite process, ensure that the flame retardant properties of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth and cotton and linen fiber cloth are not damaged. Step 2: Assemble the distribution structure. Take one set of triboelectric layers as the inner layer, with the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth facing upwards. Evenly fill the surface with down and smooth it to form a down filling layer. Then take another set of triboelectric layers as the outer layer, with the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth facing downwards, covering the surface of the down filling layer. The down filling layer is sandwiched between the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth of the two sets of triboelectric layers, ensuring that the fiberglass cloth, basalt fiber cloth, or ceramic fiber cloth, together with the cotton and linen fiber cloth, forms a double flame-retardant protection for the down filling layer. Step 3: Sew and press the assembled distribution structure together, controlling the pressing pressure to 0.3-0.8MPa and the pressing time to 15-40s, so that each layer is tightly bonded. The electrostatic synergy is used to prevent hair from being drilled, while the cotton and linen fiber cloth provides electrical insulation. The flame-retardant properties of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth are combined with those of cotton and linen fiber cloth to achieve double fire protection and flame retardancy. Step 4: Position each layer using stitching lines, ensuring the stitching process does not compromise the structural integrity of the flame-retardant layer; The principle of the electrostatic effect is based on the physical phenomenon that the friction between the glass rod and the fur generates an electric charge and attracts paper scraps.

9. The manufacturing method according to claim 8, characterized in that, In step 1, the composite method of cotton and linen fiber cloth, chemical fiber cloth or silk fiber cloth with glass fiber cloth, basalt fiber cloth or ceramic fiber cloth is hot pressing. The hot pressing temperature is 100-150℃ and the hot pressing time is 10-30s. These hot pressing parameters can ensure that the three layers of fiber cloth are firmly bonded and will not damage the flame retardant properties of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth and cotton and linen fiber cloth, as well as the triboelectric properties of chemical fiber cloth or silk fiber cloth.

10. The manufacturing method according to claim 8, characterized in that, In step 1, the composite method of cotton and linen fiber cloth, chemical fiber cloth or silk fiber cloth with glass fiber cloth, basalt fiber cloth or ceramic fiber cloth is hot pressing. The hot pressing temperature is 100-150℃ and the hot pressing time is 10-30s. These hot pressing parameters can ensure that the three layers of fiber cloth are firmly bonded and will not damage the flame retardant properties of glass fiber cloth, basalt fiber cloth or ceramic fiber cloth and cotton and linen fiber cloth, as well as the triboelectric properties of chemical fiber cloth or silk fiber cloth.

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