All-weather self-adapting temperature and humidity regulating thermal fiber quilt and preparation method thereof

Abstract

The present application belongs to the technical field of functional home textile, and relates to a full-weather self-adapting temperature and humidity regulating and warm-keeping quilt and a preparation method thereof. The warm-keeping quilt comprises a quilt filling layer and a fabric layer wrapped outside the quilt filling layer. The quilt filling layer has a density gradient structure and is composed of a moisture absorption and temperature regulating layer close to the human body side and a heat insulation and warm-keeping layer away from the human body side. The ratio of the apparent densities of the moisture absorption and temperature regulating layer and the heat insulation and warm-keeping layer is 1.8-2.5:1. The quilt filling layer is prepared by dispersing the first and second composite filaments through air flow scattering devices, and then spirally or wavelike falling onto a webbing curtain under negative pressure adsorption. In the preparation, first, a core-sheath composite fiber is prepared by using a core-sheath composite spinning process, and then the first and second composite filaments with a core-bat structure are prepared by using an air elasticization process. The warm-keeping quilt is prepared by sequentially performing air flow scattering, heat treatment and compounding. The present application has the advantages of simple method and full-weather adaptability of the product.

Description

Technical Field

[0001] This invention belongs to the field of functional home textile technology, and relates to an all-weather adaptive temperature and humidity regulating and warm fiber quilt and its preparation method. Background Technology

[0002] As living standards improve, consumers' demands for comfort in bedding have gone beyond simply "keeping warm"; they now seek a deep sleep experience with "constant temperature and humidity."

[0003] The following are the main pain points of quilts currently on the market:

[0004] Narrow temperature range adaptability: Traditional cotton quilts are thick and heavy, suitable for low temperatures but not breathable; down quilts have excellent warmth retention, but in spring and autumn or in indoor environments with unstable heating (such as fluctuations of 0~10℃ or 15~20℃), they can easily cause a "stuffy feeling" and lead to kicking off the quilt and catching a cold.

[0005] Poor humidity regulation: The human body releases sweat during sleep. Ordinary polyester fibers (polyester) have poor moisture absorption, which can easily create a "sauna effect" inside the bedding, resulting in damp cold or damp heat, seriously affecting sleep quality.

[0006] Down leakage and compaction: Real down comforters have the risk of down leakage and are prone to generating dust. Their loft also decreases significantly when they get damp.

[0007] Although temperature-regulating fibers (PCM fibers) are used in existing technologies, they are mostly in the form of short fiber blends, with loose filling structures, lack of long-term support, and low utilization of phase change materials.

[0008] For example, utility model patent CN210856543U discloses a high-efficiency thermal insulation aerogel fiber wadding, which improves the thermal insulation performance of the wadding material by introducing aerogel fibers into the filling material. However, this wadding structure suffers from a simple structure, failing to prevent airflow between fibers, thus hindering effective improvement in thermal insulation performance. Invention patent CN111485329B discloses a nanofiber wadding with a sandwich structure and its preparation method. This invention obtains a thermal insulation wadding with a sandwich structure by combining a dense nanofiber layer, a fluffy layer, and a dense layer, thereby reducing airflow between fibers and improving thermal insulation performance. However, the nanofibers used are two-dimensional structures, unable to form a three-dimensional fluffy structure, and tend to pack tightly, failing to store large amounts of still air, making it difficult to effectively improve the thermal insulation performance of the filling wadding. Furthermore, the dense structure of the nanofibers leads to poor air permeability, preventing temperature and humidity regulation.

[0009] How to achieve adaptive adjustment that is "not cold when it is cold and not stuffy when it is hot" within an ultra-wide range of -5℃ (deep winter / no heating) to 20℃ (early summer / spring and autumn) is a technical problem that urgently needs to be solved in this field.

[0010] Therefore, it is of great significance to study a climate-adaptive temperature and humidity-regulating heat-insulating fiber quilt and its preparation method to solve the problems existing in the current technology. Summary of the Invention

[0011] The purpose of this invention is to solve the problems existing in the prior art and provide an all-weather adaptive temperature and humidity regulating and warm fiber quilt and its preparation method.

[0012] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0013] A climate-adaptive temperature and humidity-regulating warm fiber quilt includes a quilt filling layer and a fabric layer covering the quilt filling layer.

[0014] The tire filling layer has a density gradient structure, consisting of a moisture-absorbing and temperature-regulating layer close to the human body and a heat-insulating and heat-preserving layer away from the human body. The apparent density ratio of the moisture-absorbing and temperature-regulating layer to the heat-insulating and heat-preserving layer is 1.8~2.5:1.

[0015] The filling layer is formed by dispersing the first composite filament and the second composite filament through an airflow dispersion device, and then dropping them in a spiral or wave-like disorder onto a netting curtain that is adsorbed by negative pressure.

[0016] Both the first composite filament and the second composite filament are core-pile composite filaments, and the pile filaments form irregularly arranged loops and pile clusters on the surface of the core filaments;

[0017] The core filaments of the first and second composite filaments are core-sheath composite fibers, and the down filaments are low-melting-point PET fibers with a melting point of 145~150℃. The sheath material of the core-sheath composite fibers is PET, and the core material is polypropylene (PP) containing phase change microcapsules.

[0018] The cross-sectional shape of the first composite filament's fleece fibers is octagonal hollow or circular hollow, with a hollowness ≥25%;

[0019] The cross-sectional shape of the second composite filament's fluff fibers is "+", "W", or "Y" shaped, and the cross-sectional irregularity is ≥25%;

[0020] The phase change temperature of the phase change microcapsules is 22~35℃, and the latent heat of phase change is ≥20J / g;

[0021] The filling layer of the quilt forms a three-dimensional mesh structure that is physically self-adhesive at the contact point through the thermal fusion of the fleece skin of the first composite filament and the second composite filament.

[0022] As a preferred technical solution:

[0023] The above-mentioned all-weather adaptive temperature and humidity regulating warm fiber quilt has an apparent density of 250~450g / m³ for its moisture-absorbing and temperature-regulating layer. 2 The apparent density of the thermal insulation layer is 100~250g / m³. 2 ;

[0024] In the filling layer of the tire, the thickness of the moisture-absorbing and temperature-regulating layer accounts for 30-45%, and the thickness of the heat-insulating layer accounts for 55-70%.

[0025] As described above, the all-weather adaptive temperature and humidity regulating warm fiber quilt has a core filament fineness of 1.25~5.56 dtex and a total fineness of 50~200 dtex for the two core-pile composite filaments; a pile filament fineness of 0.625~2.5 dtex and a total fineness of 30~150 dtex for the pile filaments; and a ratio of the total fineness of the core filament to the total fineness of the pile filaments of 1.31~1.72.

[0026] As described above, in a type of all-weather adaptive temperature and humidity regulating and warm fiber quilt, the equivalent diameter of the loop (i.e., the length of the pile along the radial direction of the core filament) in the core pile structure composite filament is 0.5~50mm, the length of the pile along the axial direction of the core filament is 0.5~50mm, and the distance between two adjacent piles is 0.5~30mm.

[0027] The above-mentioned all-weather adaptive temperature and humidity regulating and warm fiber quilt contains polypropylene with phase change microcapsules accounting for 10-30% by mass.

[0028] The all-weather adaptive temperature and humidity regulating and heat-insulating fiber quilt described above has a phase change microcapsule core material consisting of one or more of n-octadecane, n-eicosane, and polyethylene glycol.

[0029] The present invention also provides a method for preparing a climate-adaptive temperature and humidity-regulating thermal insulation fiber quilt as described in any of the preceding claims, comprising the following steps:

[0030] (1) Using PET as the outer layer material and polypropylene containing phase change microcapsules as the core layer material, a core-shell composite fiber is prepared by a core-shell composite spinning process.

[0031] (2) Using core-sheath composite fiber as core filament and low-melting-point PET fiber with an octagonal hollow or circular hollow cross-section as fluff filament, the fluff filament and core filament are fed into an air texturing machine at the same time, and the overfeed rate of core filament is controlled at 3~5% and the overfeed rate of fluff filament is controlled at 2500~3000%. Compressed air is blown into the nozzle of the air texturing machine, and the first composite filament is obtained after air texturing.

[0032] (3) Using core-sheath composite fiber as core filament and low-melting-point PET fiber with cross-sectional shape of "+", "W" or "Y" as fluff filament, feed the fluff filament and core filament into an air texturing machine at the same time, control the overfeed rate of core filament to be 3~5% and the overfeed rate of fluff filament to be 1000~2500%, blow compressed air into the nozzle of the air texturing machine, and obtain the second composite filament after air texturing;

[0033] (4) The first composite filament and the second composite filament are dispersed by the airflow dispersion device and then fall into the netting curtain adsorbed by negative pressure in a spiral or wave-like disorder, forming a primary flocculent.

[0034] (5) After heat treatment, the primary filaments are cooled and shaped. The heat treatment temperature is 150~165℃, which is 5~15℃ higher than the melting point of the low-melting-point PET fiber used as the first composite filament and the second composite filament filament. The thermoplasticity of the filaments of the first composite filament and the second composite filament is used to achieve node bonding, fix the three-dimensional network structure, and obtain the filling layer of the quilt.

[0035] (6) The filling layer of the quilt is inserted into the fabric layer, and after quilting or ultrasonic bonding, a climate-adaptive temperature and humidity-regulating and warm fiber quilt is made.

[0036] The advantages of the all-weather adaptive temperature and humidity regulating warm fiber quilt produced by this invention are as follows:

[0037] (1) Ultra-wide temperature range adaptive adjustment (core advantage);

[0038] Two-way thermal buffering: Traditional quilts either only provide warmth (such as down or thick cotton) or only provide coolness (such as summer quilts). This invention achieves "peak shaving and valley filling" thermal management through the solid-liquid conversion of phase change materials (PCMs).

[0039] Low temperature (-5℃ to 10℃): The static air layer constructed by the tufted structure isolates cold air, and the PCM releases latent heat to delay body heat loss, thereby achieving temperature regulation.

[0040] High temperature (above 20℃): PCM absorbs heat and liquefies to produce a cooling sensation, preventing the bed from getting too hot and solving the problem of "it's too hot to cover up and too cold to kick off the blanket" in spring and autumn or in heated rooms.

[0041] Suitable for all seasons: One comforter can cover the extreme temperature difference from the cold winter nights to the early summer mornings, greatly improving the utilization rate of bedding.

[0042] (2) Dynamic heat and humidity balance and “dry” sleeping sensation;

[0043] Active moisture-wicking mechanism: Unlike the "stuffy" feeling of ordinary polyester quilts, the fleece of this invention features an irregular cross-section design, combined with a multi-level capillary network created by air deformation technology. When the body sweats or the ambient humidity is high, it can quickly guide moisture from the side closest to the body to the outside.

[0044] Eliminate the feeling of "dampness / coldness": In the damp and cold winters of the south, dryness can reduce the perceived thermal conductivity of the body and increase the feeling of warmth; in summer, dryness can remove latent heat from the body surface and increase the feeling of coolness. Always maintain the relative humidity of the bedding within the golden sleeping range of 40% to 60%.

[0045] (3) A permanent, highly fluffy structure that "sticks to the skin but not to the bone";

[0046] Bionic support frame: The rigid core fiber serves as the frame, similar to the "down core" of down feathers, giving the quilt excellent resistance to compression and compression recovery rate (≥92%), so it will not collapse even after long-term use and does not require frequent airing and beating.

[0047] (4) The ultimate "down-like" feel and safety;

[0048] Microscopic down tuft structure: The super down feeding loop formed by the air-textured (ATY) process simulates the "down filament" shape of natural down on a microscopic scale, giving the chemical fiber material a fleshy, soft, and delicate touch, and eliminating the "plastic feel" of traditional long-fiber quilts.

[0049] Eliminates down leakage and allergies: The continuous filament structure physically eliminates the possibility of "down leakage" and contains no animal protein, making it extremely friendly to people with asthma and allergies.

[0050] (5) Environmentally friendly and efficient self-adhesive process: It eliminates the need for additional chemical glue spraying process and relies solely on the thermal melting of the fleece skin (LPET) to achieve physical spot welding between fibers. This structure is not only more environmentally friendly, but also has good air permeability (the pores are not blocked by glue) and excellent water resistance.

[0051] As a preferred technical solution:

[0052] In the preparation method of the all-weather adaptive temperature and humidity regulating and warm fiber quilt described above, the mass ratio of the skin material to the core material in step (1) is 1:1~3.5.

[0053] In the preparation method of the all-weather adaptive temperature and humidity regulating and warm fiber quilt described above, in step (1), the spinning box temperature of the skin layer is 270~285℃, and the spinning box temperature of the core layer is 175~190℃.

[0054] In the preparation method of the all-weather adaptive temperature and humidity regulating and warm fiber quilt described above, the process parameters of air texturing in steps (2) and (3) are: air pressure 0.5~2.5MPa, processing speed 600~800m / min.

[0055] Invention principle:

[0056] This invention employs two composite filaments with different core-pile structures to construct a quilt filling layer with a density gradient, achieving a unique advantage in adaptive temperature and humidity regulation by integrating "materials-structure-function," specifically reflected in the following four aspects:

[0057] I. Dual temperature regulation mechanism: synergistic effect of active phase change and passive insulation;

[0058] Both types of composite filaments use core-sheath composite fibers, with phase change microcapsules embedded in the core layer. These microcapsules have a phase change temperature of 25-32℃ and a latent heat of phase change ≥20J / g. This temperature range precisely covers the human body's comfortable sleep zone. When the ambient temperature is high, the phase change material absorbs heat and melts, preventing the temperature inside the blanket from rising too quickly; when the ambient temperature is low, the phase change material releases heat and crystallizes, slowing heat loss and achieving active thermal buffering.

[0059] Meanwhile, the first composite filament (sparse layer) uses octagonal hollow or circular hollow fibers with a hollowness of ≥25%. This high porosity effectively traps a large amount of still air, forming a highly efficient insulation layer and achieving passive insulation. Active temperature regulation and passive insulation complement each other: the phase change material copes with instantaneous temperature fluctuations, while the hollow fibers maintain long-term thermal resistance, ensuring the quilt maintains a Clo value ≥4.5 even at -5℃, and the temperature difference fluctuation on the human side is much smaller than that of the environment.

[0060] II. Directional humidity control capability: Gradient-driven and irregular cross-section synergistic humidity conduction;

[0061] The filling layer of the quilt adopts a gradient structure with a dense layer (second composite filament) close to the body and a sparse layer (first composite filament) away from the body. The dense layer has a high apparent density and small pore size, resulting in high capillary pressure; the sparse layer has a low apparent density and large pore size, resulting in low capillary pressure. This density gradient creates a capillary pressure difference from the dense layer to the sparse layer, driving liquid sweat to be "unidirectionally pumped" to the outer layer, preventing backflow back into the skin.

[0062] The second composite filament (dense layer) features crisscross, W-shaped, or Y-shaped cross-sections with an irregularity of ≥25%. Its surface grooves and high specific surface area create abundant capillary channels, ensuring rapid absorption and spread of sweat. The hollow filaments of the first composite filament (loose layer) serve as the final water vapor diffusion layer. Their large-pore structure facilitates moisture dissipation into the environment while preventing liquid water accumulation in the loose layer. The combination of these two elements results in a moisture permeability of ≥6000 g / (m²) for the insulating fiber quilt at 20℃ and 80% humidity. 2 •24h), the relative humidity of the microenvironment is dynamically maintained at 40%~60%.

[0063] III. Coordinated Thermo-Moisture Control: Avoiding the Dilemma of "Damp Cold" and "Sultry Heat";

[0064] Heat is rapidly conducted from the dense layer to the sparse layer on the body side, forming a temperature gradient from the inside out. This temperature gradient, along with the aforementioned capillary pressure gradient, creates a thermo-humidity coupling driving force: the temperature gradient accelerates water vapor diffusion, while the humidity gradient drives liquid water migration; both are in the same direction and mutually reinforcing. This synergistic effect prevents sweat from lingering in the dense layer and causing "stuffy heat," nor from condensing in the sparse layer and causing "damp cold," fundamentally solving the problem of a significant decrease in heat retention after traditional insulation materials absorb moisture.

[0065] IV. Structural stability and long-lasting function: ensured by thermal bonding and ring structure;

[0066] Both types of composite filaments use low-melting-point PET fibers as their pile fibers. During heat treatment, they melt and self-adhere at the contact points, forming a stable three-dimensional network structure without the need for adhesives, thus avoiding pore blockage. Simultaneously, the loop structure of the composite filaments (loop equivalent diameter 0.5~50mm, pile length 0.5~50mm) imparts a high compression recovery rate (≥92%) to the quilt filling, ensuring that the density gradient does not collapse or delaminate after long-term use and multiple washes. After washing, the heat retention and moisture permeability retention rates are both ≥80%, achieving durable and stable all-weather adaptive function.

[0067] Beneficial effects:

[0068] (1) The preparation method of the all-weather adaptive temperature and humidity regulating and warm fiber quilt of the present invention abandons the additional chemical glue spraying process, and only relies on the heat melting of the fleece skin to realize the physical spot welding between fibers. Through the core filament support and phase change temperature regulation, and the fleece irregular cross section moisture conduction or warmth preservation, a comfortable thermal and humidity microenvironment for the human body is maintained in a wide temperature range of -5℃ to 20℃.

[0069] (2) The present invention provides an all-weather adaptive temperature and humidity regulating and heat-insulating fiber quilt, which combines active temperature regulation and passive heat insulation—simultaneously improves low-temperature heat preservation and temperature fluctuation buffering, and the temperature fluctuation amplitude on the human body side is much smaller than that of the environment.

[0070] (3) The present invention provides a climate-adaptive temperature and humidity-regulating heat-insulating fiber quilt with directional moisture conduction and rapid diffusion—significantly improved moisture permeability and liquid water conduction capacity: moisture permeability ≥ 6000 g / (m²). 2 • 24h) (Existing technology down comforter 2000~4000g / (m 2 •24h)); The liquid water diffusion rate of the filling layer is ≥6.0mm / s (2~4 mm / s for ordinary fibers).

[0071] (4) The present invention provides a climate-adaptive temperature and humidity regulating and heat-insulating fiber quilt, driven by heat and humidity coupling - fundamentally avoiding the dilemma of "damp cold" and "sultry heat", and dynamically maintaining the relative humidity of the microenvironment at 40%~60%; the heat preservation rate decreases by ≤10% in high humidity environment (down quilts decrease by 30%~50%); the present invention prevents liquid water from accumulating in the insulation layer by unidirectional moisture conduction, thus maintaining excellent heat preservation performance in high humidity environment; while in traditional materials, liquid water will replace still air after accumulating in the filling layer (the thermal conductivity of water is 23 times that of air), forming a "thermal bridge" that causes a sudden drop in heat preservation.

[0072] (5) The present invention provides a climate-adaptive temperature and humidity-regulating heat-insulating fiber quilt with stable structure and durable function—the performance retention rate after washing is significantly improved: compression recovery rate ≥92% (down quilt 80%~85%); heat retention rate after washing ≥80% (down quilt ≤70%); moisture permeability retention rate after washing ≥85%.

[0073] (6) The present invention provides a climate-adaptive temperature and humidity regulating and warm fiber quilt with all-weather adaptability - a single product covering multiple usage scenarios: the present invention can maintain excellent thermal and humidity comfort in all scenarios such as low temperature and dryness (winter), low temperature and high humidity (damp and cold in the south), normal temperature and high humidity (spring and autumn / plum rain), and temperature fluctuation (large temperature difference between day and night), which is something that existing single-function filling materials cannot achieve. Attached Figure Description

[0074] Figure 1 Here is a scanning electron microscope image of the circular hollow cross-section of the filament in Example 2;

[0075] Figure 2 An appearance diagram of the core-flock composite filament prepared in Example 1;

[0076] Figure 3 Here is a scanning electron microscope image of the octagonal hollow cross-section of the filament in Example 1;

[0077] Among them, 1-core filament, 2-down filament, 3-loop, 4-down tuft. Detailed Implementation

[0078] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0079] The test methods involved in the performance indicators in the embodiments and comparative examples of this invention are as follows:

[0080] Hollowness: The ratio of the hollow area to the total cross-sectional area of ​​the fiber is calculated by observing the fiber cross-section under a microscope and using image analysis.

[0081] Irregularity: Irregularity = (Area of ​​the circumscribed circle of the irregular section - Actual area of ​​the irregular section) / Area of ​​the circumscribed circle of the irregular section × 100%.

[0082] Thermal insulation rate: Tested in accordance with FZ / T 64003-2021 standard.

[0083] Cro value: Thermal resistance obtained by testing according to GB / T 11048-2018 (evaporative hot plate method), 1 Cro value equals 0.155m. 2 The thermal resistance value in K / W is converted to the Kro value.

[0084] Compression ratio and compression recovery rate: tested according to GB / T 22796-2021 standard.

[0085] Moisture permeability: Tested according to Method A in GB / T 12704.2-2009 standard.

[0086] Breathability: Tested according to GB / T 5453-2023 standard.

[0087] Water washing stability: Tested according to FZ / T 60014-2017 standard, the dimensional change rate and performance retention rate after water washing were measured. "Water washing" refers to GB / T 8629-2017 standard.

[0088] Liquid water diffusion rate: Tested in accordance with GB / T 21655.2-2019 standard.

[0089] In the following text, the "air texturing composite" refers to the RM3-T air texturing machine manufactured by Rieter Holding AG of Switzerland.

[0090] In the following text, unless otherwise specified, the cross-sectional shape of the core filament in the first composite filament and the second composite filament is assumed to be circular.

[0091] Example 1

[0092] A method for preparing a climate-adaptive temperature and humidity-regulating thermal insulation fiber quilt, the specific steps of which are as follows:

[0093] (1) Using PET as the outer layer material and polypropylene containing phase change microcapsules as the core layer material, a core-shell composite fiber is prepared by a core-shell composite spinning process.

[0094] In polypropylene containing phase change microcapsules, the phase change microcapsules account for 10% by mass; the melting point of polypropylene is 164~170℃; the core material of the phase change microcapsules is n-octadecane, the phase change temperature of the phase change microcapsules is 28℃, and the latent heat of phase change is 22J / g; the mass ratio of the outer layer material to the core layer material is 1:1.

[0095] The process parameters for core-sheath composite spinning are as follows: the spinning box temperature of the sheath layer is 270℃, the spinning box temperature of the core layer is 175℃, the cooling is achieved by ring blowing cooling with a cooling air temperature of 20℃, the winding speed is 2600m / min, and the draw ratio is 3.5.

[0096] (2) Using core-sheath composite fiber as core filament and low-melting-point PET fiber as fluff filament, the fluff filament and core filament are fed into an air texturing machine at the same time, the overfeed rate of core filament is controlled at 3%, the overfeed rate of fluff filament is controlled at 2500%, compressed air is blown into the nozzle of the air texturing machine, and the first composite filament is obtained after air texturing.

[0097] The core filament has a single filament fineness of 1.39 dtex and a total core filament fineness of 50 dtex; the pile filament has a single filament fineness of 0.625 dtex and a total pile filament fineness of 30 dtex; for example... Figure 3 As shown, the cross-sectional shape of the filament is octagonal and hollow, with a hollowness of 25%, and the melting point of the filament is 145℃.

[0098] The process parameters for air texturing are: air pressure 0.5MPa, processing speed 600m / min;

[0099] like Figure 2 As shown, the first composite filament obtained is a core-pile structure composite filament, in which the pile filament 2 forms irregularly arranged rings 3 and pile clusters 4 on the surface of the core filament 1; the equivalent diameter of the rings is 20~25mm, the length of the pile clusters along the axial direction of the core filament is 20~25mm, and the distance between two adjacent pile clusters is 0.5~2mm.

[0100] (3) Using core-sheath composite fiber as core filament and low-melting-point PET fiber as fluff filament, the fluff filament and core filament are fed into an air texturing machine at the same time, the overfeed rate of core filament is controlled at 3%, the overfeed rate of fluff filament is controlled at 1000%, compressed air is blown into the nozzle of the air texturing machine, and the second composite filament is obtained after air texturing.

[0101] The core filament has a single filament fineness of 1.39 dtex and a total core filament fineness of 50 dtex; the pile filament has a single filament fineness of 0.625 dtex and a total pile filament fineness of 30 dtex; the pile filament has a cross-sectional shape of "+" and a cross-sectional irregularity of 25%; the pile filament has a melting point of 145℃.

[0102] The process parameters for air texturing are: air pressure 0.5MPa, processing speed 600m / min;

[0103] The second composite filament obtained is a core-pile composite filament, in which the pile filaments form irregularly arranged loops and pile clusters on the surface of the core filament; the equivalent diameter of the loops is 0.5~5mm, the length of the pile clusters along the axial direction of the core filament is 0.5~4mm, and the distance between two adjacent pile clusters is 10~15mm.

[0104] (4) The first composite filament and the second composite filament are dispersed by the airflow dispersion device and then fall into the web-forming curtain in a spiral disorder in sequence, which is adsorbed by negative pressure, and form a primary flocculent.

[0105] (5) The primary wadding is conveyed to a hot air penetration drying room at 150°C for heat treatment for 45 seconds. The hot air penetration drying room adopts a tension-free conveying method. Then it is cooled and shaped at 25°C to obtain the quilt filling layer.

[0106] (6) The filling layer of the quilt is inserted into the fabric layer and then quilted to obtain a climate-adaptive temperature and humidity-regulating warm fiber quilt.

[0107] The final all-weather adaptive temperature and humidity regulating warm fiber quilt consists of a quilt filling layer and a fabric layer covering the filling layer. The filling layer has a density gradient structure, consisting of a moisture-absorbing and temperature-regulating layer close to the body and a heat-insulating layer away from the body. The filling layer forms a physically self-adhesive three-dimensional mesh structure at the contact points through the thermal fusion of the fleece layers of the first and second composite filaments. The weight of the all-weather adaptive temperature and humidity regulating warm fiber quilt is 350 g / m². 2 The apparent density of the moisture-absorbing and temperature-regulating layer is 250 g / m³. 2 The apparent density of the thermal insulation layer is 100 g / m³. 2 In the filling layer of the quilt, the thickness of the moisture-absorbing and temperature-regulating layer accounts for 30%, and the thickness of the heat-insulating layer accounts for 70%. The all-weather adaptive temperature- and moisture-regulating heat-insulating fiber quilt has a heat retention rate of 75%, a Clo value of 3 Clo, a compression rate of 40%, and a compression recovery rate of 92%. The moisture permeability is 6000 g / (m²). 2 •24h), the relative humidity of the microenvironment is dynamically maintained at 40~60%, the air permeability is 2000mm / s; the liquid water diffusion rate of the filling layer is 6mm / s; after 30 washes, the size change rate of the all-weather adaptive temperature and humidity regulating and warm fiber quilt is 3%, the clo value retention rate is 80%, the heat retention rate is 80%, and the compression recovery rate decreases by 15%.

[0108] Comparative Example 1

[0109] A method for preparing a thermal fiber quilt is basically the same as in Example 1, except that the core-sheath composite fiber obtained in step (1) is used as the first composite filament.

[0110] The final thermal insulation fiber quilt produced had a heat retention rate of 62%, a Clo value of 2.4 Clo, a compression rate of 52%, a compression recovery rate of 85%, and a moisture permeability of 5710 g / m². 2 • 24h; the liquid water diffusion rate of the filling layer is 5.5mm / s; after 30 washes, the clo value retention rate of the thermal insulation fiber quilt is 72%, the heat retention rate is 70%, and the compression recovery rate decreases by 22%.

[0111] Comparing Comparative Example 1 and Example 1, it can be found that the liquid water diffusion rate, heat retention rate, clo value, compression recovery rate, moisture permeability, and clo value and heat retention rate retention rates of the thermal fiber quilt in Comparative Example 1 are all lower than those in Example 1. This is mainly because: First, the large loops and large tufts of the first composite filament in Example 1 are the key to forming high loft, high static air content, and high resilience; while the first composite filament in Comparative Example 1 loses the down-like "tuft-loop" three-dimensional structure. Smooth fibers cannot provide this three-dimensional support network, and the channels formed between smooth fibers are relatively straight and of uniform size, resulting in insufficient capillary driving force and reduced transmission efficiency of water vapor and liquid water. Secondly, in Example 1, the downy filaments (low-melting-point PET fibers) melt and soften during heat treatment, forming numerous self-adhesive points with the core filaments and adjacent downy clusters, thus constructing a stable three-dimensional network structure. In Comparative Example 1, the first composite filament lacks downy filaments and cannot form self-adhesive; the fibers rely only on loose stacking and a small amount of entanglement, resulting in poor structural stability. During washing, the fibers easily slip and rearrange, leading to increased shrinkage and decreased retention rates of Clo value and heat retention. Finally, although the first composite filament in Comparative Example 1 still contains phase change microcapsules, the lack of a fluffy structure results in an insufficient air layer around the phase change material, reducing the absorption and release efficiency of the latent heat of phase change. Consequently, the temperature regulation function of the phase change microcapsules cannot be fully utilized, further weakening the temperature regulation effect.

[0112] Comparative Example 2

[0113] A method for preparing a thermal insulation fiber quilt is basically the same as in Example 1, except that, under the premise that the weight of the thermal insulation fiber quilt remains unchanged, the apparent density ratio of the moisture-absorbing and temperature-regulating layer to the heat-insulating layer is adjusted to 1.5:1.

[0114] The final thermal insulation fiber quilt produced had a heat retention rate of 68%, a clo value of 2.5 Clo, a compression rate of 55%, and a compression recovery rate of 88%. After 30 washes, the clo value retention rate was 75%, the heat retention rate was 74%, and the compression recovery rate decreased by 18%.

[0115] Moisture permeability is 5200g / (m²) 2 •24h); The diffusion rate of liquid water in the tire filling layer is 4.5mm / s.

[0116] Comparing Comparative Example 2 and Example 1, it can be found that the liquid water diffusion rate of the filling layer, the heat retention rate of the insulating fiber quilt, the Clo value, the compression recovery rate, the Clo value retention rate after 30 washes, the heat retention rate retention rate, and the moisture permeability of Comparative Example 2 are all significantly lower than those of Example 1. This is mainly because the density gradient of Comparative Example 2 is reduced, resulting in the failure of functional layering: the density difference between the moisture-absorbing and temperature-regulating layer and the heat-insulating layer is the key to forming the "dense at the bottom and sparse at the top" gradient structure. When the density ratio of the two layers decreases from 2.5:1 to 1.5:1, the fiber packing of the moisture-absorbing and temperature-regulating layer becomes too sparse, and it cannot effectively undertake the "moisture absorption and moisture conduction" function; at the same time, the thermal resistance difference between the two layers decreases, and the heat-insulating layer cannot effectively "lock in" heat, resulting in a decrease in overall heat insulation performance. The decrease in the density of the moisture-absorbing and temperature-regulating layer means that the number of fibers per unit volume is reduced, the number of physical self-adhesive points formed by the thermal melting of the fleece layer is reduced accordingly, and the three-dimensional network structure becomes sparse and discontinuous. This directly leads to: discontinuous diffusion paths for liquid water (reduced diffusion speed), insufficient resilience after compression (reduced recovery rate), and easy structural damage after washing (poor dimensional stability). The moisture-wicking and temperature-regulating layer has too low a density and insufficient fiber surface area, making it unable to quickly absorb sweat vapor produced by the human body, and also lacking sufficient capillary channels to quickly expel liquid water, resulting in a wider range of microenvironmental humidity fluctuations and a decrease in wet comfort.

[0117] Comparative Example 3

[0118] A method for preparing a thermal insulation fiber quilt is basically the same as in Example 1, except that, under the premise that the weight of the thermal insulation fiber quilt remains unchanged, the apparent density ratio of the moisture-absorbing and temperature-regulating layer to the heat-insulating layer is adjusted to 3:1.

[0119] The final thermal insulation fiber quilt has a heat retention rate of 78%, a Clo value of 3.3 Clo, a compression rate of 35%, and a compression recovery rate of 93%; its moisture permeability is 5500 g / (m²). 2 (24h), the liquid water diffusion rate of the tire filling layer is 5.2mm / s, and the air permeability is 1600mm / s.

[0120] Comparing Comparative Example 3 and Example 1, it can be observed that Comparative Example 3 shows an increase in heat retention rate and clo value, but a decrease in moisture permeability, moisture wicking ability, and air permeability. This is because the apparent density of the moisture-absorbing and temperature-regulating layer set in Example 1 at 250 g / m² and the apparent density ratio of 2.5:1 are an optimized balance point. When the apparent density ratio increases to 3:1, the increased density of the moisture-absorbing and temperature-regulating layer leads to denser fiber packing and increased still air content. Although the heat retention performance and washability are improved, key comfort indicators such as moisture permeability, moisture wicking, air permeability, and hand feel show a significant decrease. This indicates that a larger apparent density gradient is not necessarily better; an excessively large apparent density gradient will sacrifice the quilt's moisture management ability and wearing comfort.

[0121] Example 2

[0122] A method for preparing a climate-adaptive temperature and humidity-regulating thermal insulation fiber quilt, the specific steps of which are as follows:

[0123] (1) Using PET as the outer layer material and polypropylene containing phase change microcapsules as the core layer material, a core-shell composite fiber is prepared by a core-shell composite spinning process.

[0124] In polypropylene containing phase change microcapsules, the phase change microcapsules account for 30% by mass; the melting point of polypropylene is 164~170℃; the core material of the phase change microcapsules is n-eicosane, the phase change temperature of the phase change microcapsules is 35℃, and the latent heat of phase change is 30J / g; the mass ratio of the outer layer material to the core layer material is 1:3.5.

[0125] The process parameters for core-sheath composite spinning are as follows: the spinning box temperature of the sheath layer is 285℃, the spinning box temperature of the core layer is 190℃, the cooling is achieved by ring blowing cooling at a temperature of 20℃, the winding speed is 2600m / min, and the draw ratio is 3.5.

[0126] (2) Using core-sheath composite fiber as core filament and low-melting-point PET fiber as fluff filament, the fluff filament and core filament are fed into an air texturing machine at the same time, the overfeed rate of core filament is controlled at 5%, the overfeed rate of fluff filament is controlled at 3000%, compressed air is blown into the nozzle of the air texturing machine, and the first composite filament is obtained after air texturing.

[0127] The core filament has a single filament fineness of 5.56 dtex and a total core filament fineness of 200 dtex; the pile filament has a single filament fineness of 2.5 dtex and a total pile filament fineness of 150 dtex; for example... Figure 1 As shown, the cross-sectional shape of the filament is circular and hollow, with a hollowness of 30%, and the melting point of the filament is 150℃.

[0128] The process parameters for air texturing are: air pressure 2.5MPa, processing speed 800m / min;

[0129] The first composite filament obtained is a core-pile structure composite filament, in which the pile filaments form irregularly arranged loops and pile clusters on the surface of the core filament; the equivalent diameter of the loops is 45~50mm, the length of the pile clusters along the axial direction of the core filament is 45~50mm, and the distance between two adjacent pile clusters is 12~15mm.

[0130] (3) Using core-sheath composite fiber as core filament and low-melting-point PET fiber as fluff filament, the fluff filament and core filament are fed into an air texturing machine at the same time, the overfeed rate of core filament is controlled at 5%, the overfeed rate of fluff filament is controlled at 2500%, compressed air is blown into the nozzle of the air texturing machine, and the second composite filament is obtained after air texturing.

[0131] The core filament has a single filament fineness of 5.56 dtex and a total core filament fineness of 200 dtex; the pile filament has a single filament fineness of 2.5 dtex and a total pile filament fineness of 150 dtex; the pile filament has a cross-sectional shape of "W" and a cross-sectional irregularity of 30%; the pile filament has a melting point of 150℃.

[0132] The process parameters for air texturing are: air pressure 2.5MPa, processing speed 800m / min;

[0133] The second composite filament obtained is a core-pile structure composite filament, in which the pile filaments form irregularly arranged loops and pile clusters on the surface of the core filament; the equivalent diameter of the loops is 15~20mm, the length of the pile clusters along the axial direction of the core filament is 15~20mm, and the distance between two adjacent pile clusters is 25~30mm.

[0134] (4) The first composite filament and the second composite filament are dispersed by the airflow dispersion device and then fall in a wave-like disorder onto the netting curtain adsorbed by negative pressure, forming a primary filament.

[0135] (5) The primary flocs are transported to a hot air penetration drying room at a temperature of 165°C for heat treatment for 120 seconds. The hot air penetration drying room adopts a tension-free conveying method. Then, the flocs are cooled and shaped at 25°C to obtain the filling layer of the quilt.

[0136] (6) The filling layer of the quilt is inserted into the fabric layer and then ultrasonically composited to obtain a climate-adaptive temperature and humidity-regulating warm fiber quilt.

[0137] The final all-weather adaptive temperature and humidity regulating warm fiber quilt consists of a quilt filling layer and a fabric layer covering the filling layer. The filling layer has a density gradient structure, consisting of a moisture-absorbing and temperature-regulating layer close to the body and a heat-insulating layer away from the body. The filling layer forms a physically self-adhesive three-dimensional mesh structure at the contact points through the thermal fusion of the fleece layers of the first and second composite filaments. The weight of the all-weather adaptive temperature and humidity regulating warm fiber quilt is 700 g / m². 2 The apparent density of the moisture-absorbing and temperature-regulating layer is 450 g / m³. 2 The apparent density of the thermal insulation layer is 250 g / m³. 2 In the filling layer of the quilt, the thickness of the moisture-absorbing and temperature-regulating layer accounts for 45%, and the thickness of the heat-insulating layer accounts for 55%. The all-weather adaptive temperature- and humidity-regulating heat-insulating fiber quilt has a heat retention rate of 95%, a Clo value of 4.2 Clo, a compression rate of 60%, and a compression recovery rate of 98%. The moisture permeability is 7520 g / (m³). 2•24h), the relative humidity of the microenvironment is dynamically maintained at 42~58%, and the air permeability is 2870mm / s; the liquid water diffusion rate of the filling layer is 8.3mm / s; after 30 washes, the size change rate of the all-weather adaptive temperature and humidity regulating warm fiber quilt is 2%, the clo value retention rate is 88%, the heat preservation rate retention rate is 85%, and the compression recovery rate decreases by 8%.

[0138] Example 3

[0139] A method for preparing a climate-adaptive temperature and humidity-regulating thermal insulation fiber quilt, the specific steps of which are as follows:

[0140] (1) Using PET as the outer layer material and polypropylene containing phase change microcapsules as the core layer material, a core-shell composite fiber is prepared by a core-shell composite spinning process.

[0141] In polypropylene containing phase change microcapsules, the phase change microcapsules account for 20% by mass; the melting point of polypropylene is 164~170℃; the core material of the phase change microcapsules is polyethylene glycol 600 (PEG600), the phase change temperature of the phase change microcapsules is 22℃, and the latent heat of phase change is 25J / g; the mass ratio of the outer layer material to the core layer material is 1:2.

[0142] The process parameters for core-sheath composite spinning are as follows: the spinning box temperature of the sheath layer is 278℃, the spinning box temperature of the core layer is 182℃, the cooling is achieved by ring blowing cooling with a cooling air temperature of 20℃, the winding speed is 2600m / min, and the draw ratio is 3.5.

[0143] (2) Using core-sheath composite fiber as core filament and low-melting-point PET fiber as fluff filament, the fluff filament and core filament are fed into an air texturing machine at the same time, the overfeed rate of core filament is controlled at 4%, the overfeed rate of fluff filament is controlled at 2750%, compressed air is blown into the nozzle of the air texturing machine, and the first composite filament is obtained after air texturing.

[0144] The core filament has a single filament fineness of 1.4 dtex and a total core filament fineness of 135 dtex; the pile filament has a single filament fineness of 1.25 dtex and a total pile filament fineness of 90 dtex; the pile filament has an octagonal hollow cross-section with a hollowness of 28% and a melting point of 148℃.

[0145] The process parameters for air texturing are: air pressure 1.5MPa, processing speed 700m / min;

[0146] The first composite filament obtained is a core-pile structure composite filament, in which the pile filaments form irregularly arranged loops and pile clusters on the surface of the core filament; the equivalent diameter of the loops is 33~38mm, the length of the pile clusters along the core filament axis is 32~37mm, and the distance between two adjacent pile clusters is 6~9mm.

[0147] (3) Using core-sheath composite fiber as core filament and low-melting-point PET fiber as fluff filament, the fluff filament and core filament are fed into an air texturing machine at the same time, and the overfeed rate of core filament is controlled at 4% and the overfeed rate of fluff filament is controlled at 1750%. Compressed air is blown into the nozzle of the air texturing machine, and the second composite filament is obtained after air texturing.

[0148] The core filament has a single filament fineness of 1.67 dtex and a total core filament fineness of 120 dtex; the pile filament has a single filament fineness of 1.25 dtex and a total pile filament fineness of 90 dtex; the pile filament has a Y-shaped cross-section with a cross-sectional irregularity of 28% and a melting point of 148℃.

[0149] The process parameters for air texturing are: air pressure 1.5MPa, processing speed 700m / min;

[0150] The second composite filament obtained is a core-pile structure composite filament, in which the pile filaments form irregularly arranged loops and pile clusters on the surface of the core filament; the equivalent diameter of the loops is 8~15mm, the length of the pile clusters along the axial direction of the core filament is 7~14mm, and the distance between two adjacent pile clusters is 18~23mm.

[0151] (4) The first composite filament and the second composite filament are dispersed by the airflow dispersion device and then fall into the web-forming curtain in a spiral disorder in sequence, which is adsorbed by negative pressure, and form a primary flocculent.

[0152] (5) The primary flocs are transported to a hot air penetration drying room at 158°C for heat treatment for 80 seconds. The hot air penetration drying room adopts a tension-free conveying method. Then, the flocs are cooled and shaped at 25°C to obtain the filling layer of the quilt.

[0153] (6) The filling layer of the quilt is inserted into the fabric layer and then quilted to obtain a climate-adaptive temperature and humidity-regulating warm fiber quilt.

[0154] The final all-weather adaptive temperature and humidity regulating warm fiber quilt consists of a quilt filling layer and a fabric layer covering the filling layer. The filling layer has a density gradient structure, consisting of a moisture-absorbing and temperature-regulating layer close to the body and a heat-insulating layer away from the body. The filling layer forms a physically self-adhesive three-dimensional mesh structure at the contact points through the thermal fusion of the fleece layers of the first and second composite filaments. The weight of the all-weather adaptive temperature and humidity regulating warm fiber quilt is 530 g / m². 2 The apparent density of the moisture-absorbing and temperature-regulating layer is 350 g / m³. 2 The apparent density of the thermal insulation layer is 180 g / m³. 2In the filling layer of the quilt, the thickness of the moisture-absorbing and temperature-regulating layer accounts for 38%, and the thickness of the heat-insulating layer accounts for 62%. The all-weather adaptive temperature- and humidity-regulating heat-insulating fiber quilt has a heat retention rate of 86%, a Clo value of 3.6 Clo, a compression rate of 50%, and a compression recovery rate of 95%. The moisture permeability is 6810 g / (m³). 2 •24h), the relative humidity of the microenvironment is dynamically maintained at 42~57%, and the air permeability is 2420mm / s; the liquid water diffusion rate of the filling layer is 7.2mm / s; after 30 washes, the size change rate of the all-weather adaptive temperature and humidity regulating warm fiber quilt is 2.5%, the clo value retention rate is 84%, the heat retention rate is 83%, and the compression recovery rate decreases by 11%.

[0155] Example 4

[0156] A method for preparing a climate-adaptive temperature and humidity-regulating thermal insulation fiber quilt, the specific steps of which are as follows:

[0157] (1) Using PET as the outer layer material and polypropylene containing phase change microcapsules as the core layer material, a core-shell composite fiber is prepared by a core-shell composite spinning process.

[0158] In polypropylene containing phase change microcapsules, the phase change microcapsules account for 15% by mass; the melting point of polypropylene is 164~170℃; the core material of the phase change microcapsules is a mixture of n-octadecane and n-eicosane in a molar ratio of 1:1; the phase change temperature of the phase change microcapsules is 30℃; the latent heat of phase change is 23J / g; the mass ratio of the skin material to the core material is 1:1.5.

[0159] The process parameters for core-sheath composite spinning are as follows: the spinning box temperature of the sheath layer is 275℃, the spinning box temperature of the core layer is 178℃, cooling is achieved by ring blowing with a cooling air temperature of 20℃, the winding speed is 2600m / min, and the draw ratio is 3.5.

[0160] (2) Using core-sheath composite fiber as core filament and low-melting-point PET fiber as fluff filament, the fluff filament and core filament are fed into an air texturing machine at the same time, the overfeed rate of core filament is controlled at 3.5%, the overfeed rate of fluff filament is controlled at 2600%, compressed air is blown into the nozzle of the air texturing machine, and the first composite filament is obtained after air texturing.

[0161] The core filament has a single filament fineness of 3 dtex and a total core filament fineness of 150 dtex; the pile filament has a single filament fineness of 1.5 dtex and a total pile filament fineness of 108 dtex; the pile filament has a circular hollow cross-section with a hollowness of 32% and a melting point of 147℃.

[0162] The process parameters for air texturing are: air pressure 1MPa, processing speed 650m / min;

[0163] The first composite filament obtained is a core-pile structure composite filament, in which the pile filaments form irregularly arranged loops and pile clusters on the surface of the core filament; the equivalent diameter of the loops is 22~30mm, the length of the pile clusters along the axial direction of the core filament is 25~32mm, and the distance between two adjacent pile clusters is 3~7mm.

[0164] (3) Using core-sheath composite fiber as core filament and low-melting-point PET fiber as fluff filament, the fluff filament and core filament are fed into an air texturing machine at the same time, the overfeed rate of core filament is controlled at 3.5%, the overfeed rate of fluff filament is controlled at 1200%, compressed air is blown into the nozzle of the air texturing machine, and the second composite filament is obtained after air texturing.

[0165] The core filament has a single filament fineness of 2.08 dtex and a total core filament fineness of 150 dtex; the pile filament has a single filament fineness of 1.5 dtex and a total pile filament fineness of 108 dtex; the pile filament has a cross-sectional shape of "+" and a cross-sectional irregularity of 26%; the pile filament has a melting point of 147℃.

[0166] The process parameters for air texturing are: air pressure 1MPa, processing speed 650m / min;

[0167] The second composite filament obtained is a core-pile structure composite filament, in which the pile filaments form irregularly arranged loops and pile clusters on the surface of the core filament; the equivalent diameter of the loops is 3~7mm, the length of the pile clusters along the axial direction of the core filament is 3~7mm, and the distance between two adjacent pile clusters is 13~18mm.

[0168] (4) The first composite filament and the second composite filament are dispersed by the airflow dispersion device and then fall into the web-forming curtain in a spiral disorder in sequence, which is adsorbed by negative pressure, and form a primary flocculent.

[0169] (5) The primary wadding is conveyed to a hot air penetrating drying room at a temperature of 155°C for heat treatment for 70 seconds. The hot air penetrating drying room adopts a tension-free conveying method. Then it is cooled and shaped at 25°C to obtain the quilt filling layer.

[0170] (6) The filling layer of the quilt is inserted into the fabric layer and then ultrasonically composited to obtain a climate-adaptive temperature and humidity-regulating warm fiber quilt.

[0171] The final all-weather adaptive temperature and humidity regulating warm fiber quilt consists of a quilt filling layer and a fabric layer covering the filling layer. The filling layer has a density gradient structure, consisting of a moisture-absorbing and temperature-regulating layer close to the body and a heat-insulating layer away from the body. The filling layer forms a physically self-adhesive three-dimensional mesh structure at the contact points through the thermal fusion of the fleece layers of the first and second composite filaments. The weight of the all-weather adaptive temperature and humidity regulating warm fiber quilt is 450 g / m². 2 The apparent density of the moisture-absorbing and temperature-regulating layer is 300 g / m³. 2The apparent density of the thermal insulation layer is 150 g / m³. 2 In the filling layer of the quilt, the thickness of the moisture-absorbing and temperature-regulating layer accounts for 35%, and the thickness of the heat-insulating layer accounts for 65%. The all-weather adaptive temperature- and moisture-regulating heat-insulating fiber quilt has a heat retention rate of 80%, a Clo value of 3.2 Clo, a compression rate of 45%, and a compression recovery rate of 93%. The moisture permeability is 6360 g / (m³). 2 •24h), the relative humidity of the microenvironment is dynamically maintained at 40~59%, and the air permeability is 2160mm / s; the liquid water diffusion rate of the filling layer is 6.5mm / s; after 30 washes, the size change rate of the all-weather adaptive temperature and humidity regulating warm fiber quilt is 2.8%, the clo value retention rate is 80%, the heat retention rate is 80%, and the compression recovery rate decreases by 13%.

[0172] Example 5

[0173] A method for preparing a climate-adaptive temperature and humidity-regulating thermal insulation fiber quilt, the specific steps of which are as follows:

[0174] (1) Using PET as the outer layer material and polypropylene containing phase change microcapsules as the core layer material, a core-shell composite fiber is prepared by a core-shell composite spinning process.

[0175] In polypropylene containing phase change microcapsules, the phase change microcapsules account for 25% by mass; the melting point of polypropylene is 164~170℃; the core material of the phase change microcapsules is a mixture of n-eicosane and polyethylene glycol 600 (PEG600) in a molar ratio of 2:1; the phase change temperature of the phase change microcapsules is 29℃; the latent heat of phase change is 28J / g; the mass ratio of the outer layer material to the core layer material is 1:3.

[0176] The process parameters for core-sheath composite spinning are as follows: the spinning box temperature of the sheath layer is 282℃, the spinning box temperature of the core layer is 188℃, cooling is achieved by ring blowing with a cooling air temperature of 20℃, the winding speed is 2600m / min, and the draw ratio is 3.5.

[0177] (2) Using core-sheath composite fiber as core filament and low-melting-point PET fiber as fluff filament, the fluff filament and core filament are fed into an air texturing machine at the same time, the overfeed rate of core filament is controlled at 4.5%, the overfeed rate of fluff filament is controlled at 2900%, compressed air is blown into the nozzle of the air texturing machine, and the first composite filament is obtained after air texturing.

[0178] The core filament has a single filament fineness of 4 dtex and a total core filament fineness of 180 dtex; the pile filament has a single filament fineness of 2 dtex and a total pile filament fineness of 130 dtex; the pile filament has an octagonal hollow cross-section with a hollowness of 35% and a melting point of 149℃.

[0179] The process parameters for air texturing are: air pressure 2MPa, processing speed 750m / min;

[0180] The first composite filament obtained is a core-pile structure composite filament, in which the pile filaments form irregularly arranged loops and pile clusters on the surface of the core filament; the equivalent diameter of the loops is 40~46mm, the length of the pile clusters along the axial direction of the core filament is 40~46mm, and the distance between two adjacent pile clusters is 10~14mm.

[0181] (3) Using core-sheath composite fiber as core filament and low-melting-point PET fiber as fluff filament, the fluff filament and core filament are fed into an air texturing machine at the same time, and the overfeed rate of core filament is controlled at 4.5% and the overfeed rate of fluff filament is controlled at 2200%. Compressed air is blown into the nozzle of the air texturing machine, and the second composite filament is obtained after air texturing.

[0182] The core filament has a single filament fineness of 4.5 dtex and a total core filament fineness of 162 dtex; the pile filament has a single filament fineness of 2.5 dtex and a total pile filament fineness of 120 dtex; the pile filament has a cross-sectional shape of "W" and a cross-sectional irregularity of 32%; the pile filament has a melting point of 149℃.

[0183] The process parameters for air texturing are: air pressure 2MPa, processing speed 750m / min;

[0184] The second composite filament obtained is a core-pile structure composite filament, in which the pile filaments form irregularly arranged loops and pile clusters on the surface of the core filament; the equivalent diameter of the loops is 13~18mm, the length of the pile clusters along the axial direction of the core filament is 12~18mm, and the distance between two adjacent pile clusters is 22~27mm.

[0185] (4) The first composite filament and the second composite filament are dispersed by the airflow dispersion device and then fall into the web-forming curtain in a spiral disorder in sequence, which is adsorbed by negative pressure, and form a primary flocculent.

[0186] (5) The primary flocs are transported to a hot air penetrating drying room at a temperature of 162°C for heat treatment for 100 seconds. The hot air penetrating drying room adopts a tension-free conveying method. Then, the flocs are cooled and shaped at 25°C to obtain the filling layer of the quilt.

[0187] (6) The filling layer of the quilt is inserted into the fabric layer and then quilted to obtain a climate-adaptive temperature and humidity-regulating warm fiber quilt.

[0188] The final all-weather adaptive temperature and humidity regulating warm fiber quilt consists of a quilt filling layer and a fabric layer covering the filling layer. The filling layer has a density gradient structure, consisting of a moisture-absorbing and temperature-regulating layer close to the body and a heat-insulating layer away from the body. The filling layer forms a physically self-adhesive three-dimensional mesh structure at the contact points through the thermal fusion of the fleece layers of the first and second composite filaments. The weight of the all-weather adaptive temperature and humidity regulating warm fiber quilt is 620 g / m². 2 The apparent density of the moisture-absorbing and temperature-regulating layer is 400 g / m³. 2 The apparent density of the thermal insulation layer is 220 g / m³. 2 In the filling layer of the quilt, the thickness of the moisture-absorbing and temperature-regulating layer accounts for 42%, and the thickness of the heat-insulating layer accounts for 58%. The all-weather adaptive temperature- and moisture-regulating heat-insulating fiber quilt has a heat retention rate of 91%, a Clo value of 3.9 Clo, a compression rate of 55%, and a compression recovery rate of 97%. The moisture permeability is 7230 g / (m³). 2 •24h), the relative humidity of the microenvironment is dynamically maintained at 41~56%, and the air permeability is 2610mm / s; the liquid water diffusion rate of the filling layer is 7.6mm / s; after 30 washes, the size change rate of the all-weather adaptive temperature and humidity regulating warm fiber quilt is 2.2%, the clo value retention rate is 86%, the heat retention rate is 86%, and the compression recovery rate decreases by 9%.

[0189] Example 6

[0190] A method for preparing a climate-adaptive temperature and humidity-regulating thermal insulation fiber quilt, the specific steps of which are as follows:

[0191] (1) Using PET as the outer layer material and polypropylene containing phase change microcapsules as the core layer material, a core-shell composite fiber is prepared by a core-shell composite spinning process.

[0192] In polypropylene containing phase change microcapsules, the mass percentage of phase change microcapsules is 12%; the melting point of polypropylene is 164~170℃; the core material of the phase change microcapsules is n-octadecane, the phase change temperature of the phase change microcapsules is 28℃, and the latent heat of phase change is 21J / g; the mass ratio of the skin material to the core material is 1:2.8.

[0193] The process parameters for core-sheath composite spinning are as follows: the spinning box temperature of the sheath layer is 272℃, the spinning box temperature of the core layer is 180℃, cooling is achieved by ring blowing with a cooling air temperature of 20℃, the winding speed is 2600m / min, and the draw ratio is 3.5.

[0194] (2) Using core-sheath composite fiber as core filament and low-melting-point PET fiber as fluff filament, the fluff filament and core filament are fed into an air texturing machine at the same time, the overfeed rate of core filament is controlled at 3.2% and the overfeed rate of fluff filament is controlled at 2550%, compressed air is blown into the nozzle of the air texturing machine, and the first composite filament is obtained after air texturing.

[0195] The core filament has a single filament fineness of 1.8 dtex and a total core filament fineness of 86 dtex; the pile filament has a single filament fineness of 0.83 dtex and a total pile filament fineness of 50 dtex; the pile filament has a circular hollow cross-section with a hollowness of 26% and a melting point of 146℃.

[0196] The process parameters for air texturing are: air pressure 0.8MPa, processing speed 620m / min;

[0197] The first composite filament obtained is a core-pile structure composite filament, in which the pile filaments form irregularly arranged loops and pile clusters on the surface of the core filament; the equivalent diameter of the loops is 18~24mm, the length of the pile clusters along the core filament axis is 22~26mm, and the distance between two adjacent pile clusters is 1~4mm.

[0198] (3) Using core-sheath composite fiber as core filament and low-melting-point PET fiber as fluff filament, the fluff filament and core filament are fed into an air texturing machine at the same time, the overfeed rate of core filament is controlled at 3.2% and the overfeed rate of fluff filament is controlled at 1500%, compressed air is blown into the nozzle of the air texturing machine, and the second composite filament is obtained after air texturing.

[0199] Among them, the core filament has a single filament fineness of 2 dtex and a total core filament fineness of 96 dtex; the pile filament has a single filament fineness of 1 dtex and a total pile filament fineness of 60 dtex; the pile filament has a cross-sectional shape of "Y" and a cross-sectional irregularity of 27%; the pile filament has a melting point of 146℃.

[0200] The process parameters for air texturing are: air pressure 0.8MPa, processing speed 620m / min;

[0201] The second composite filament obtained is a core-pile structure composite filament, in which the pile filaments form irregularly arranged loops and pile clusters on the surface of the core filament; the equivalent diameter of the loops is 4~9mm, the length of the pile clusters along the axial direction of the core filament is 3~8mm, and the distance between two adjacent pile clusters is 16~21mm.

[0202] (4) The first composite filament and the second composite filament are dispersed by the airflow dispersion device and then fall into the web-forming curtain in a spiral disorder in sequence, which is adsorbed by negative pressure, and form a primary flocculent.

[0203] (5) The primary flocs are transported to a hot air penetrating drying room at a temperature of 152°C for heat treatment for 55 seconds. The hot air penetrating drying room adopts a tension-free conveying method. Then, the flocs are cooled and shaped at 25°C to obtain the filling layer of the quilt.

[0204] (6) The filling layer of the quilt is inserted into the fabric layer and then ultrasonically composited to obtain a climate-adaptive temperature and humidity-regulating warm fiber quilt.

[0205] The final all-weather adaptive temperature and humidity regulating warm fiber quilt consists of a quilt filling layer and a fabric layer covering the filling layer. The filling layer has a density gradient structure, consisting of a moisture-absorbing and temperature-regulating layer close to the body and a heat-insulating layer away from the body. The filling layer forms a physically self-adhesive three-dimensional mesh structure at the contact points through the thermal fusion of the fleece layers of the first and second composite filaments. The weight of the all-weather adaptive temperature and humidity regulating warm fiber quilt is 400 g / m². 2 The apparent density of the moisture-absorbing and temperature-regulating layer is 280 g / m³. 2 The apparent density of the thermal insulation layer is 120 g / m³. 2 In the filling layer of the quilt, the thickness of the moisture-absorbing and temperature-regulating layer accounts for 32%, and the thickness of the heat-insulating layer accounts for 68%. The all-weather adaptive temperature- and humidity-regulating heat-insulating fiber quilt has a heat retention rate of 77%, a Clo value of 3.1 Clo, a compression rate of 42%, and a compression recovery rate of 92.5%. The moisture permeability is 6180 g / (m³). 2 •24h), the relative humidity of the microenvironment is dynamically maintained at 40~60%, and the air permeability is 2050mm / s; the liquid water diffusion rate of the filling layer is 6.2mm / s; after 30 washes, the size change rate of the all-weather adaptive temperature and humidity regulating warm fiber quilt is 2.9%, the clo value retention rate is 81%, the heat retention rate is 81%, and the compression recovery rate decreases by 14%.

[0206] Example 7

[0207] A method for preparing a climate-adaptive temperature and humidity-regulating thermal insulation fiber quilt, the specific steps of which are as follows:

[0208] (1) Using PET as the outer layer material and polypropylene containing phase change microcapsules as the core layer material, a core-shell composite fiber is prepared by a core-shell composite spinning process.

[0209] In polypropylene containing phase change microcapsules, the phase change microcapsules account for 18% by mass; the melting point of polypropylene is 164~170℃; the core material of the phase change microcapsules is a mixture of n-octadecane and polyethylene glycol 600 in a molar ratio of 3:1; the phase change temperature of the phase change microcapsules is 25℃; the latent heat of phase change is 24J / g; the mass ratio of the skin material to the core material is 1:2.2.

[0210] The process parameters for core-sheath composite spinning are as follows: the spinning box temperature of the sheath layer is 280℃, the spinning box temperature of the core layer is 185℃, cooling is achieved by ring blowing cooling at a temperature of 20℃, the winding speed is 2600m / min, and the draw ratio is 3.5.

[0211] (2) Using core-sheath composite fiber as core filament and low-melting-point PET fiber as fluff filament, the fluff filament and core filament are fed into an air texturing machine at the same time, and the overfeed rate of core filament is controlled at 4.2% and the overfeed rate of fluff filament is controlled at 2850%. Compressed air is blown into the nozzle of the air texturing machine, and the first composite filament is obtained after air texturing.

[0212] Among them, the core filament has a single filament fineness of 3.5 dtex and a total core filament fineness of 126 dtex; the pile filament has a single filament fineness of 1 dtex and a total pile filament fineness of 96 dtex; the cross-sectional shape of the pile filament is octagonal and hollow, with a hollowness of 29%; and the melting point of the pile filament is 148℃.

[0213] The process parameters for air texturing are: air pressure 1.8MPa, processing speed 720m / min;

[0214] The first composite filament obtained is a core-pile structure composite filament, in which the pile filaments form irregularly arranged loops and pile clusters on the surface of the core filament; the equivalent diameter of the loops is 36~44mm, the length of the pile clusters along the axial direction of the core filament is 36~42mm, and the distance between two adjacent pile clusters is 8~13mm.

[0215] (3) Using core-sheath composite fiber as core filament and low-melting-point PET fiber as fluff filament, the fluff filament and core filament are fed into an air texturing machine at the same time, the overfeed rate of core filament is controlled at 4.2% and the overfeed rate of fluff filament is controlled at 2000%, compressed air is blown into the nozzle of the air texturing machine, and the second composite filament is obtained after air texturing.

[0216] Among them, the core filament has a single filament fineness of 3 dtex and a total core filament fineness of 108 dtex; the pile filament has a single filament fineness of 1 dtex and a total pile filament fineness of 72 dtex; the pile filament has a cross-sectional shape of "+" and a cross-sectional irregularity of 29%; the pile filament has a melting point of 148℃.

[0217] The process parameters for air texturing are: air pressure 1.8MPa, processing speed 720m / min;

[0218] The second composite filament obtained is a core-pile structure composite filament, in which the pile filaments form irregularly arranged loops and pile clusters on the surface of the core filament; the equivalent diameter of the loops is 9~14mm, the length of the pile clusters along the axial direction of the core filament is 9~13mm, and the distance between two adjacent pile clusters is 20~23mm.

[0219] (4) The first composite filament and the second composite filament are dispersed by the airflow dispersion device and then fall into the web-forming curtain in a spiral disorder in sequence, which is adsorbed by negative pressure, and form a primary flocculent.

[0220] (5) The primary flocs are transported to a hot air penetration drying room at a temperature of 160°C for heat treatment for 90 seconds. The hot air penetration drying room adopts a tension-free conveying method. Then, the flocs are cooled and shaped at 25°C to obtain the filling layer of the quilt.

[0221] (6) The filling layer of the quilt is inserted into the fabric layer and then quilted to obtain a climate-adaptive temperature and humidity-regulating warm fiber quilt.

[0222] The final all-weather adaptive temperature and humidity regulating warm fiber quilt consists of a quilt filling layer and a fabric layer covering the filling layer. The filling layer has a density gradient structure, consisting of a moisture-absorbing and temperature-regulating layer close to the body and a heat-insulating layer away from the body. The filling layer forms a physically self-adhesive three-dimensional mesh structure at the contact points through the thermal fusion of the fleece layers of the first and second composite filaments. The weight of the all-weather adaptive temperature and humidity regulating warm fiber quilt is 480 g / m². 2 The apparent density of the moisture-absorbing and temperature-regulating layer is 320 g / m³. 2 The apparent density of the thermal insulation layer is 160 g / m³. 2 In the filling layer of the quilt, the thickness of the moisture-absorbing and temperature-regulating layer accounts for 40%, and the thickness of the heat-insulating layer accounts for 60%. The all-weather adaptive temperature- and humidity-regulating heat-insulating fiber quilt has a heat retention rate of 84%, a Clo value of 3.5 Clo, a compression rate of 48%, and a compression recovery rate of 94%. The moisture permeability is 6650 g / (m³). 2 •24h), the relative humidity of the microenvironment is dynamically maintained at 42~58%, and the air permeability is 2330mm / s; the liquid water diffusion rate of the filling layer is 7mm / s; after 30 washes, the size change rate of the all-weather adaptive temperature and humidity regulating and warm insulation fiber quilt is 2.6%, the clo value retention rate is 83%, the heat retention rate is 83%, and the compression recovery rate decreases by 12%.

Claims

1. A climate-adaptive temperature and humidity-regulating, warm fiber quilt, characterized in that: Includes the tire filling layer and the fabric layer covering the tire filling layer; The tire filling layer has a density gradient structure, consisting of a moisture-absorbing and temperature-regulating layer close to the human body and a heat-insulating and heat-preserving layer away from the human body. The apparent density ratio of the moisture-absorbing and temperature-regulating layer to the heat-insulating and heat-preserving layer is 1.8~2.5:

1. The filling layer is formed by dispersing the first composite filament and the second composite filament through an airflow dispersion device, and then dropping them in a spiral or wave-like disorder onto a netting curtain that is adsorbed by negative pressure. Both the first composite filament and the second composite filament are core-pile composite filaments, and the pile filaments form irregularly arranged loops and pile clusters on the surface of the core filaments; The core filaments of the first and second composite filaments are core-sheath composite fibers, and the down filaments are low-melting-point PET fibers with a melting point of 145~150℃. The sheath material of the core-sheath composite fibers is PET, and the core material is polypropylene containing phase change microcapsules. The cross-sectional shape of the first composite filament's fleece fibers is octagonal hollow or circular hollow, with a hollowness ≥25%; The cross-sectional shape of the second composite filament's fleece fibers is "+", "W" or "Y" shaped, and the cross-sectional irregularity is ≥25%; The phase change temperature of the phase change microcapsules is 22~35℃, and the latent heat of phase change is ≥20J / g; The filling layer of the quilt forms a three-dimensional mesh structure that is physically self-adhesive at the contact point through the thermal fusion of the fleece skin of the first composite filament and the second composite filament.

2. The all-weather adaptive temperature and humidity regulating warm fiber quilt according to claim 1, characterized in that, The apparent density of the moisture-absorbing and temperature-regulating layer is 250~450 g / m³. 2 The apparent density of the thermal insulation layer is 100~250g / m³. 2 ; In the filling layer of the tire, the thickness of the moisture-absorbing and temperature-regulating layer accounts for 30-45%, and the thickness of the heat-insulating layer accounts for 55-70%.

3. The all-weather adaptive temperature and humidity regulating warm fiber quilt according to claim 1, characterized in that, The core filament of the two types of composite filaments has a single filament fineness of 1.39~5.56 dtex and a total core filament fineness of 50~200 dtex; the pile filament has a single filament fineness of 0.625~2.5 dtex and a total pile filament fineness of 30~150 dtex; the ratio of the total fineness of the core filament to the total fineness of the pile filament is 1.31~1.

72.

4. The all-weather adaptive temperature and humidity regulating warm fiber quilt according to claim 1, characterized in that, In the core-pile composite filament, the equivalent diameter of the loop is 0.5~50mm, the length of the pile along the axial and radial directions of the core filament is 0.5~50mm, and the spacing between two adjacent piles is 0.5~30mm.

5. The all-weather adaptive temperature and humidity regulating warm fiber quilt according to claim 1, characterized in that, In polypropylene containing phase change microcapsules, the mass percentage of phase change microcapsules is 10-30%.

6. The all-weather adaptive temperature and humidity regulating warm fiber quilt according to claim 5, characterized in that, The core material of the phase change microcapsule is one or more of n-octadecane, n-eicosane, and polyethylene glycol.

7. The method for preparing a climate-adaptive temperature and humidity-regulating thermal insulation fiber quilt as described in any one of claims 1 to 6, characterized in that... Includes the following steps: (1) Using PET as the outer layer material and polypropylene containing phase change microcapsules as the core layer material, a core-shell composite fiber is prepared by a core-shell composite spinning process. (2) Using core-sheath composite fiber as core filament and low-melting-point PET fiber with an octagonal hollow or circular hollow cross-section as fluff filament, the fluff filament and core filament are fed into an air texturing machine at the same time, and the overfeed rate of core filament is controlled at 3~5% and the overfeed rate of fluff filament is controlled at 2500~3000%. Compressed air is blown into the nozzle of the air texturing machine, and the first composite filament is obtained after air texturing. (3) Using core-sheath composite fiber as core filament and low-melting-point PET fiber with cross-sectional shape of "+", "W" or "Y" as fluff filament, feed the fluff filament and core filament into an air texturing machine at the same time, control the overfeed rate of core filament to be 3~5% and the overfeed rate of fluff filament to be 1000~2500%, blow compressed air into the nozzle of the air texturing machine, and obtain the second composite filament after air texturing; (4) The first composite filament and the second composite filament are dispersed by the airflow dispersion device and then fall into the netting curtain adsorbed by negative pressure in a spiral or wave-like disorder, forming a primary flocculent. (5) After heat treatment of the primary wadding, the wadding is cooled and shaped. The heat treatment temperature is 150~165℃ to obtain the filling layer. (6) The filling layer of the quilt is inserted into the fabric layer, and after quilting or ultrasonic bonding, a climate-adaptive temperature and humidity-regulating and warm fiber quilt is made.

8. The method for preparing a climate-adaptive temperature and humidity-regulating thermal insulation fiber quilt according to claim 7, characterized in that, In step (1), the mass ratio of the skin material to the core material is 1:1 to 3.

5.

9. The method for preparing a climate-adaptive temperature and humidity-regulating thermal insulation fiber quilt according to claim 7, characterized in that, In step (1), the spinning box temperature of the outer layer is 270~285℃, and the spinning box temperature of the core layer is 175~190℃.

10. The method for preparing a climate-adaptive temperature and humidity-regulating thermal insulation fiber quilt according to claim 7, characterized in that, In steps (2) and (3), the process parameters for air texturing are: air pressure 0.5~2.5MPa, processing speed 600~800m / min.

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