Warm-keeping material based on down feather and wool silk composite filling as well as preparation method and application of warm-keeping material

Abstract

The invention belongs to the technical field of thermal insulation materials, and provides a thermal insulation material based on down feather and wool silk composite filling and a preparation method and application thereof. The invention provides a warm-keeping material based on down feather and wool silk composite filling. The warm-keeping material comprises first lining cloth, a down feather filling layer, second lining cloth, a wool silk composite layer and a fixing net which are sequentially arranged in a stacked mode. The wool-silk composite layer is formed by a wool-silk blended material, the wool-silk blended material is formed by blending a wool-silk mixture, and the wool-silk mixture comprises the following components in percentage by mass: 60-85% of wool and 40-15% of silk. The wool-silk composite layer is arranged as the inner layer of the warm-keeping material, moisture can be absorbed away from the skin surface and diffused and discharged outwards through the wool-silk composite layer, the body is kept dry and comfortable, and the stuffiness feeling or the temperature loss risk caused by water accumulation is avoided; the problem that a pure down thermal insulation material is prone to stuffy sweat during strenuous exercise or large temperature difference change is solved.

Description

Technical Field

[0001] This invention relates to the field of thermal insulation materials technology, and in particular to a thermal insulation material based on a composite filling of down, wool and silk, its preparation method and application. Background Technology

[0002] Currently, the filling material for winter thermal clothing and down jackets on the market is generally pure down, mainly duck down. Its advantages are excellent warmth retention (high thermal resistance), light weight, and good compressibility. However, its disadvantages are also very obvious: it is easy to sweat after strenuous exercise, causing the down to become wet, collapse, and clump together, resulting in a sharp drop in warmth retention and causing problems such as sudden changes in temperature. Summary of the Invention

[0003] In view of this, the purpose of this invention is to provide a thermal insulation material based on a composite filling of down, wool, and silk. The thermal insulation material provided by this invention avoids the stuffiness and sweating defects of pure down thermal insulation materials, thus improving its thermal insulation performance.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solution: The present invention provides a thermal insulation material based on a composite filling of down and wool and silk, comprising a first lining fabric, a down filling layer, a second lining fabric, a wool and silk composite layer, and a fixing net, which are stacked in sequence. The wool-silk composite layer is formed of a wool-silk blend material, which is made of a wool-silk mixture comprising the following components by mass percentage: 60-85% wool and 40-15% silk.

[0005] Preferably, the wool is Australian Merino wool, and the fiber fineness of the Australian Merino wool is 15~20μm; the silk is mulberry silk.

[0006] Preferably, the weight of the wool-silk composite layer is 35~120 g / m². 2 .

[0007] Preferably, the method for preparing the wool-silk mixture includes: opening wool and silk separately to obtain opened wool and opened silk respectively; and mixing the opened wool and opened silk to obtain the wool-silk mixture.

[0008] Preferably, the down in the down filling layer is duck down, the duck down is white duck down, the down content of the white duck down is greater than or equal to 90%, and the cleanliness is 1000+.

[0009] Preferably, the down filling layer has a down content of 40~60g / m³. 2 .

[0010] Preferably, the thermal insulation material further includes an outer fabric and an inner fabric, wherein the outer fabric has a weight of 80~180 g / m². 2 The weight of the inner material is 80~120g / m³. 2 ; The outer fabric is in contact with the first inner fabric, and the inner fabric is in contact with the fixing mesh.

[0011] This invention also provides a method for preparing the thermal insulation material based on a composite filling of down and wool and silk, as described in the above technical solution, comprising the following steps: The first lining fabric is divided into multiple filling compartments by quilting. Down is filled into each filling compartment along the quilting line and initially sealed to form a down filling layer; A second lining cloth is covered on the down filling layer, and then wool and silk blended material is filled into the same filling compartment to form a wool and silk composite layer. A fixing mesh is sequentially covered on the wool and silk composite layer, and then sewn along the original quilting lines to obtain the thermal insulation material based on down and wool and silk composite filling.

[0012] This invention also provides a method for preparing the thermal insulation material based on a composite filling of down and wool and silk, as described in the above technical solution, comprising the following steps: Down is filled and fixed onto the first inner fabric to form a down felt; A wool and silk blend material is filled and fixed onto a second lining fabric to create a wool and silk felt. The down felt and the wool and silk felt are stacked together in such a way that the down in the down felt comes into contact with the second lining of the wool and silk felt, and a fixing net is covered on the wool and silk felt and the four sides are sewn together to obtain a thermal insulation material based on a composite filling of down and wool and silk.

[0013] The present invention also provides the application of the thermal insulation material based on the composite filling of down and wool and silk as described in the above technical solution or the thermal insulation material based on the composite filling of down and wool and silk prepared by the preparation method described in the above technical solution in thermal clothing.

[0014] This invention provides a thermal insulation material based on a composite filling of down, wool, and silk. The thermal insulation material of this invention has the following significant advantages: (1) Excellent overall warmth retention: The down filling layer, as the main insulation layer (closest to the outside), with its extremely high loft, locks in a large amount of air, forming the most effective heat insulation barrier to prevent the intrusion of external cold air. The wool in the wool-silk composite layer is also an excellent natural insulation material. The wool fibers curl to form an air layer, located in the inner layer to provide additional warmth. That is, the down filling layer provides a static air insulation layer, and the wool-silk composite layer further reduces heat convection and heat conduction, making the insulation material's coefficient of thermal insulation (CLO value) higher than that of a single-material filling garment of the same thickness and weight. When achieving the same level of warmth, the insulation material of this invention is lighter and thinner than pure wool / silk filling garments and fluffier and softer than pure synthetic cotton filling garments. The inner layer is skin-friendly and delicate, without any itching sensation, and provides high wearing comfort.

[0015] (2) Excellent moisture retention: Wool has a strong ability to absorb and wick away moisture, absorbing more than 30% of its own weight in water without feeling wet, and can quickly absorb the sweat emitted by the body. Silk also has good moisture absorption and breathability, and a silky feel. Wool and silk are combined in a mass ratio of 60~85:40~15 to form a wool-silk composite layer. This ratio ensures sufficient support and elasticity while achieving a delicate, skin-friendly feel and optimal filling density. The wool-silk composite layer of this invention can absorb moisture from the skin surface and diffuse it outwards through the wool-silk composite layer, keeping the body dry and comfortable, avoiding the stuffiness or hypothermia caused by water accumulation, and solving the problem of pure down insulation materials easily causing sweating during strenuous exercise or large temperature changes.

[0016] (3) Temperature regulation and constant temperature: Wool has a natural dynamic temperature regulation ability. When it is humid or cold, wool fibers can absorb moisture and release a small amount of heat. When it is warm, it can promote the evaporation and heat dissipation of moisture, realizing dynamic moisture management of moisture absorption-heat generation-moisture removal. Silk also has good temperature adaptability: the wool and silk composite layer mixes wool and silk in a certain mass ratio, which can buffer temperature fluctuations, make the body temperature more stable and comfortable, and reduce the feeling of sudden hot and cold.

[0017] (4) Reduce the risk of down leakage: Placing down in the outer layer (away from the body) and using the wool and silk composite layer as a barrier can reduce the possibility of down directly penetrating the inner fabric and improving the durability and aesthetics of the insulation material.

[0018] (5) Lightweight and comfortable: When achieving the same level of warmth, the insulation material of this invention is lighter and thinner than pure wool / silk filled garments, and fluffier and softer than pure synthetic cotton filled garments. The inner layer is skin-friendly and delicate, without any itching sensation, and provides high wearing comfort.

[0019] (6) Improved durability and structural stability: The thermal insulation material of the present invention is independently filled and fixed in layers, which avoids the migration and clumping of the filling material and ensures the uniformity of thermal insulation during its service life. At the same time, the wool and silk composite layer can act as a support layer for the down composite layer, which helps to maintain the overall structure of the filling material, reduces the tendency of the down to be unevenly distributed, clumped or sinking after long-term wear or washing, and extends the thermal insulation life.

[0020] (7) Natural environmental protection and health attributes: Down, wool and silk are all natural biodegradable materials, which are in line with the concept of sustainability. Wool is naturally odor-resistant and can absorb and decompose odor molecules. Wool and silk are low allergenic and suitable for sensitive skin. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of the thermal insulation material based on a composite filling of down, wool, and silk provided by the present invention; Figure 2 The image shows the sample of the thermal insulation material obtained in Example 1 submitted for testing. Detailed Implementation

[0022] The present invention provides a thermal insulation material based on a composite filling of down and wool and silk, comprising a first lining fabric, a down filling layer, a second lining fabric, a wool and silk composite layer, and a fixing net, which are stacked in sequence. The wool-silk composite layer is formed of a wool-silk blend material, which is made of a wool-silk mixture comprising the following components by mass percentage: 60-85% wool and 40-15% silk.

[0023] Figure 1 The following is a schematic diagram of the structure of the thermal insulation material based on a composite filling of down, wool, and silk provided by the present invention. Figure 1 The thermal insulation material provided by the present invention will be described.

[0024] The thermal insulation material based on a composite filling of down and wool / silk provided by this invention includes a first lining fabric. In this invention, the preferred weight of the first lining fabric is 50-80 g / m². 2 Specifically, the preferred value is 50g / m 2 55g / m 2 60g / m 2 65g / m 2 70g / m 2 75g / m 2 Or 80g / m 2 In this invention, the first inner lining is preferably made of woven fabric.

[0025] The thermal insulation material based on a composite filling of down, wool, and silk provided by this invention preferably also includes an outer fabric. In this invention, the weight of the outer fabric is preferably 80-180 g / m². 2 Specifically, the preferred value is 80g / m 2 90g / m 2 100g / m 2 110g / m 2 120g / m 2 130g / m 2 140g / m 2 150g / m 2 160g / m 2 170g / m 2 Or 180g / m 2 In this invention, the outer fabric is preferably a woven fabric, specifically a high-count, high-density down-proof nylon fabric. In this invention, the outer fabric preferably contacts the first inner fabric, and preferably is located on the outside of the first inner fabric.

[0026] The thermal insulation material based on a composite filling of down and wool / silk provided by this invention includes a down filling layer layered inside a first lining fabric. In this invention, the down in the down filling layer is preferably duck down, preferably white duck down, and the down content of the white duck down is preferably greater than or equal to 90%, with a cleanliness level preferably 1000+. In this invention, the filling amount of down in the down filling layer is preferably 40~60 g / m³. 2 Specifically, the preferred value is 40g / m 2 45g / m 2 50g / m 2 55g / m 2 Or 60g / m 2 .

[0027] The thermal insulation material based on a composite filling of down and wool / silk provided by this invention includes a second lining fabric layered inside the down filling layer. In this invention, the material of the second lining fabric is preferably the same as that of the first lining fabric, which will not be described further here. In this invention, the second lining fabric serves to separate the down filling layer and the wool / silk composite layer, and to enclose the down.

[0028] The present invention provides a thermal insulation material based on a composite filling of down and wool and silk, comprising a wool and silk composite layer layered on the inner side of a second lining. In this invention, the wool and silk composite layer is formed of a wool and silk blend material, which is a blend of wool and silk mixtures comprising the following components by weight percentage: 60-85% wool and 40-15% silk. In this invention, by weight percentage, the wool and silk mixture comprises 60-85% wool, preferably 60%, 65%, 70%, 75%, 80%, or 85%. In this invention, by weight percentage, the wool and silk mixture comprises 40-15% silk, preferably 15%, 20%, 25%, 30%, 35%, or 40%. In this invention, the wool is preferably Australian Merino wool, and the fiber fineness of the Australian Merino wool is preferably 15-20 μm, preferably 18.5 μm. In this invention, the silk is preferably mulberry silk. In this invention, the preferred method for preparing the wool-silk mixture includes: separately opening wool and silk to obtain opened wool and opened silk respectively; and mixing the opened wool and opened silk to obtain the wool-silk mixture. This invention does not specifically limit the opening and mixing operations and parameters; operations well-known to those skilled in the art can be used. In this invention, the basis weight of the wool-silk composite layer is preferably 35~120 g / m². 2 Specifically, the preferred value is 35g / m 2 40g / m 2 45g / m 2 50g / m 2 55g / m 2 60g / m 2 65g / m 2 70g / m 2 75g / m 2 80g / m 2 85g / m 2 90g / m 2 95g / m 2 100g / m 2 105g / m 2 110g / m 2 115g / m 2 Or 120g / m 2In this invention, wool possesses a powerful moisture-wicking capacity (it can absorb more than 30% of its own weight in water without feeling wet), quickly absorbing sweat emitted by the body. Silk also has excellent moisture absorption and breathability, and a silky feel. This invention blends wool and silk to form a wool-silk composite layer. This wool-silk composite layer can absorb moisture from the skin surface and diffuse it outwards, keeping the body dry and comfortable, avoiding the stuffiness or hypothermia caused by moisture buildup. This solves the problem of pure down feathers easily causing sweating during strenuous activity or large temperature changes.

[0029] The thermal insulation material based on a composite filling of down and wool / silk provided by this invention includes a fixing mesh layered inside the wool / silk composite layer. In this invention, the weight of the fixing mesh is preferably 5-50 g / m². 2 Specifically, 5g / m 2 10g / m 2 15g / m 2 20g / m 2 25g / m 2 30g / m 2 35g / m 2 40g / m 2 45g / m 2 Or 50g / m 2 In this invention, the material of the fixing net preferably includes tufted yarn.

[0030] The thermal insulation material based on a composite filling of down, wool, and silk provided by this invention preferably also includes an inner lining, which is in contact with the fixing mesh. In this invention, the weight of the inner lining is preferably 80-120 g / m². 2 Specifically, the preferred value is 80g / m 2 90g / m 2 100g / m 2 110g / m 2 Or 120g / m 2 In this invention, the lining material is preferably a woven or knitted fabric. In this invention, the lining material serves as the inner side of the insulating material, i.e., the side that contacts the body.

[0031] In this invention, wool fibers possess excellent crimp elasticity, providing support and preventing the wool-silk composite layer from being compacted. Silk fibers are extremely fine and soft, filling the gaps between wool fibers to form a dense air layer, and working synergistically with wool to provide strong moisture absorption, heat generation, and breathability, solving the problem of poor moisture absorption and breathability in pure down insulation materials. The insulation material based on a down and wool-silk composite filling provided by this invention combines down and wool-silk mixtures as filling, integrating the advantages of different materials and compensating for the shortcomings of a single material, thereby improving the overall performance and wearing experience of the insulation material. It is a new solution for pursuing high performance and high comfort. The insulation material of this invention achieves a perfect division of labor between core warmth and close-fitting comfort / moisture management, significantly improving the breathability, skin-friendliness, temperature stability, and overall wearing comfort of the insulation material. It is especially suitable for dynamic activities, scenarios with large temperature fluctuations, or scenarios requiring a high degree of close-fitting feel, while also taking into account natural environmental protection and health attributes. The insulation material of this invention is more functional, more comfortable, and more in line with human needs.

[0032] This invention also provides a method for preparing the thermal insulation material based on a composite filling of down and wool and silk, as described in the above technical solution, comprising the following steps: The first lining fabric is divided into multiple filling compartments by quilting. Down is filled into each filling compartment along the quilting line and initially sealed to form a down filling layer; A second lining cloth is covered on the down filling layer, and then wool and silk blended material is filled into the same filling compartment to form a wool and silk composite layer. A fixing mesh is sequentially covered on the wool and silk composite layer, and then sewn along the original quilting lines to obtain the thermal insulation material based on down and wool and silk composite filling.

[0033] This invention divides the first lining fabric into multiple filling compartments using quilted seams. The shape and size of these filling compartments are not specifically limited; they can be set according to actual needs. In this invention, when the thermal insulation material based on a composite filling of down and wool / silk preferably also includes an outer fabric, the invention preferably further includes: layering the outer fabric and the first lining fabric before dividing the first lining fabric into multiple filling compartments using quilted seams. The layering operation of the outer fabric and the first lining fabric is not specifically limited; it can be set according to actual needs. Alternatively, the outer fabric and the first lining fabric can be cut and layered according to the shape of the garment.

[0034] After forming the filling compartments, the present invention fills each filling compartment with down along the quilting line and initially seals and fixes it, forming a down filling layer. The present invention does not specifically limit the method of filling the down; any operation well known to those skilled in the art can be used.

[0035] After forming the down filling layer, the present invention covers the down filling layer with a second lining fabric, and then fills the same filling compartments with a wool-silk blend material to form a wool-silk composite layer. The present invention does not specifically limit the method of covering the second lining fabric and filling with the wool-silk blend material; any operation well known to those skilled in the art can be used.

[0036] After forming the wool-silk composite layer, the present invention sequentially covers the wool-silk composite layer with a fixing mesh and sews it along the original quilting lines to obtain the thermal insulation material based on down and wool-silk composite filling. The present invention does not specifically limit the covering method and sewing method of the fixing mesh; any operation well known to those skilled in the art can be used. In the present invention, when the thermal insulation material based on down and wool-silk composite filling preferably also includes a lining material, after covering with the fixing mesh, it is preferable to further cover with the lining material. The present invention does not specifically limit the method of covering the lining material; any method well known to those skilled in the art can be used.

[0037] The present invention also provides another method for preparing the thermal insulation material based on a composite filling of down and wool and silk described in the above technical solution, comprising the following steps: Down is filled and fixed onto the first inner fabric to form a down felt; A wool and silk blend material is filled and fixed onto a second lining fabric to create a wool and silk felt. The down felt and the wool and silk felt are stacked together in such a way that the down in the down felt comes into contact with the second lining of the wool and silk felt, and a fixing net is covered on the wool and silk felt and the four sides are sewn together to obtain a thermal insulation material based on a composite filling of down and wool and silk.

[0038] This invention involves filling and fixing down feathers onto a first inner fabric to create a down felt. The invention does not specify a particular method for filling and fixing the down feathers; any method well-known to those skilled in the art can be used.

[0039] This invention involves filling and fixing a wool-silk blended material onto a second inner fabric to create a wool-silk felt. The invention does not specify a particular method for filling and fixing; any laying method well-known to those skilled in the art can be used.

[0040] After forming down felt and wool / silk felt, the present invention combines the down felt and the wool / silk felt by having the down in the down felt come into contact with the second lining of the wool / silk felt, and then covers the wool / silk felt with a fixing net and sews the edges together to obtain the thermal insulation material based on the composite filling of down and wool / silk. The present invention does not specifically limit the operations of combining, covering with the fixing net, and sewing; operations well known to those skilled in the art can be used.

[0041] In this invention, when the thermal insulation material based on a composite filling of down and wool / silk further includes an outer fabric and an inner fabric, after the four sides are sewn together, it preferably further includes: placing the thermal insulation material based on a composite filling of down and wool / silk as a core layer between the outer fabric and the inner fabric and sewing them together, thereby obtaining a thermal insulation material based on a composite filling of down and wool / silk with an outer fabric and an inner fabric. This invention does not specifically limit the sewing process; any operation well-known to those skilled in the art can be used.

[0042] The present invention also provides the application of the thermal insulation material based on the composite filling of down and wool and silk as described in the above technical solution or the thermal insulation material based on the composite filling of down and wool and silk prepared by the preparation method described in the above technical solution in thermal clothing.

[0043] The present invention does not specifically limit the application of the thermal insulation material based on the composite filling of down, wool and silk. Those skilled in the art can set it according to actual needs.

[0044] The following detailed description, in conjunction with embodiments, illustrates the thermal insulation material based on a composite filling of down, wool, and silk provided by the present invention, its preparation method, and its application. However, these descriptions should not be construed as limiting the scope of protection of the present invention.

[0045] Example 1 The outer fabric (woven fabric, weight 120g / m²) 2 ) and the first liner (made of woven fabric, with a weight of 50g / m²) 2 After being layered, the filling compartments are divided into multiple compartments by quilting, each measuring 12×10cm. On the first lining fabric, white duck down (90% down content, cleanliness 1000+) is filled into each filling compartment along the quilting line, and then initially sealed to form a down filling layer. The down filling layer contains 40g / m² of down. 2 .

[0046] Cover the down filling layer with a second lining fabric (woven material, weight 50g / m²). 2 Then, wool and silk blended material is filled into the same filling cells to form a wool and silk composite layer (weight 60g / m²). 2 ); Among them, the wool and silk blended material is made by blending wool and silk mixture. The preparation method of wool and silk mixture is as follows: Australian Merino wool and mulberry silk with a fiber fineness of 18.5μm are opened separately to obtain opened wool and opened silk. The opened wool and opened silk are mixed at a mass ratio of 65:35 to form wool and silk mixture.

[0047] A fixing net (material: yarn, weight: 35g / m²) is sequentially covered on the wool-silk composite layer. 2) and the inner lining (woven material, weight 80g / m²) 2 The original quilting lines are sewn together to obtain a thermal insulation material based on a composite filling of down, wool, and silk.

[0048] The thermal insulation material obtained in Example 1 was cut and sent for testing. The sample submitted for testing is as follows: Figure 2 As shown.

[0049] The test was conducted according to GB / T 11048-2018, and the result was: heat transfer coefficient is 1.15 W / m. 2 ·K, thermal resistance is 0.879m 2 K / W, Clo value 5.67CLO, insulation rate 92.3%.

[0050] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A thermal insulation material based on a composite filling of down and wool and silk, comprising a first lining fabric, a down filling layer, a second lining fabric, a wool and silk composite layer, and a fixing net, which are stacked in sequence; The wool-silk composite layer is formed of a wool-silk blend material, which is made of a wool-silk mixture comprising the following components by mass percentage: 60-85% wool and 40-15% silk.

2. The thermal insulation material according to claim 1, characterized in that, The wool is Australian Merino wool, and the fiber fineness of the Australian Merino wool is 15~20μm; the silk is mulberry silk.

3. The thermal insulation material according to claim 1, characterized in that, The weight of the wool-silk composite layer is 35~120 g / m². 2 .

4. The thermal insulation material according to any one of claims 1 to 3, characterized in that, The method for preparing the wool-silk mixture includes: opening wool and silk separately to obtain opened wool and opened silk respectively; and mixing the opened wool and opened silk to obtain the wool-silk mixture.

5. The thermal insulation material according to claim 1, characterized in that, The down filling layer contains duck down, which is white duck down. The down content of the white duck down is greater than or equal to 90%, and the cleanliness is 1000+.

6. The thermal insulation material according to claim 1 or 5, characterized in that, The down filling layer contains 40-60 g / m³ of down. 2 .

7. The thermal insulation material according to claim 1, characterized in that, The thermal insulation material also includes an outer fabric and an inner fabric, wherein the outer fabric has a weight of 80~180g / m². 2 The weight of the inner material is 80~120g / m³. 2 ; The outer fabric is in contact with the first inner fabric, and the inner fabric is in contact with the fixing mesh.

8. The method for preparing the thermal insulation material based on a composite filling of down and wool / silk as described in any one of claims 1 to 7, characterized in that, Includes the following steps: The first lining fabric is divided into multiple filling compartments by quilting. Down is filled into each filling compartment along the quilting line and initially sealed to form a down filling layer; A second lining cloth is covered on the down filling layer, and then wool and silk blended material is filled into the same filling compartment to form a wool and silk composite layer. A fixing mesh is sequentially covered on the wool and silk composite layer, and then sewn along the original quilting lines to obtain the thermal insulation material based on down and wool and silk composite filling.

9. The method for preparing the thermal insulation material based on a composite filling of down and wool / silk as described in any one of claims 1 to 7, characterized in that, Includes the following steps: Down is filled and fixed onto the first inner fabric to form a down felt; A wool and silk blend material is filled and fixed onto a second lining fabric to create a wool and silk felt. The down felt and the wool and silk felt are stacked together in such a way that the down in the down felt comes into contact with the second lining of the wool and silk felt, and a fixing net is covered on the wool and silk felt and the four sides are sewn together to obtain a thermal insulation material based on a composite filling of down and wool and silk.

10. The application of the thermal insulation material based on down and wool-silk composite filling as described in any one of claims 1 to 7, or the thermal insulation material based on down and wool-silk composite filling prepared by the preparation method described in claim 8 or 9, in thermal clothing.

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