A temperature-sensitive weft-knitted air-layer down jacket fabric and its production method

Abstract

This invention discloses a temperature-sensitive weft-knitted air-layer down jacket fabric and its production method, belonging to the field of textile technology. The invention involves weaving a double-sided air-layer structure on a double-sided jacquard circular knitting machine. The surface woven with ordinary fibers is designated S1, and the surface woven with shape memory spandex / ordinary fiber core-spun yarn is designated S2. The connecting yarn between S1 and S2 is made of ordinary fibers. In one weaving cycle, S1 is always woven with ordinary fibers in a loop pattern, and S2 is always woven with shape memory spandex / ordinary fiber core-spun yarn in a loop pattern. After S1 and S2 have woven a certain number of rows, ordinary fibers are used to connect S1 and S2 in a loop pattern to form an intermediate connecting yarn. The connecting yarn forms a horizontal stripe appearance or a wavy appearance. Compared with fabrics without spandex and without shrinkage, the fabric prepared by this invention has a 5.61% higher warmth retention rate and a thickness reduction of approximately 4 mm.

Description

Technical Field

[0001] This invention relates to a temperature-sensitive weft-knitted air-layer down jacket fabric and its production method, belonging to the field of textile technology. Background Technology

[0002] In recent years, with the development of technology and the gradual improvement of people's living standards, the demand for functional clothing has been increasing, and people are more willing to pay for functional and comfortable products. As an important part of clothing, the development of functional fabrics has become a new and important research direction for technicians in the industry.

[0003] Down jackets are essential clothing for people to keep warm in winter. When people need to wear down jackets in cold weather, they need to have good warmth retention without being too bulky. This requires the down jacket fabric to be able to hold more air within a limited space to improve its warmth retention. When it is warm weather and down jackets are not needed, or when traveling to cold regions and needing to carry down jackets, they need to be easy to fold and store, and not too bulky, otherwise they will take up a lot of space and be inconvenient to store and travel.

[0004] Currently, existing down jacket fabrics are usually designed to be thick and bulky for better warmth, making them difficult to fold and store; or they are designed to be lightweight for better folding and storage, but their warmth is insufficient. It is difficult to achieve a balance between the two to achieve both warmth and easy folding and storage.

[0005] Therefore, designing a down jacket fabric that provides good warmth when worn, is easy to fold and store when not worn, and has different patterns has become an urgent problem to be solved. Summary of the Invention

[0006] [Technical Issues]

[0007] Conventional down jacket fabrics rarely offer both warmth and ease of folding and storage.

[0008] [Technical Solution]

[0009] To address the aforementioned issues, this invention provides a method for producing a temperature-sensitive weft-knitted air-layer down jacket fabric. Specifically, the fabric employs an air-layer structure, utilizing the unique properties of temperature-sensitive shape memory spandex. When the fabric is above the switching temperature of the shape memory spandex, the side containing the shape memory spandex contracts, while the side without the shape memory spandex arches, trapping more air and thus improving warmth retention. When the fabric is below the switching temperature of the shape memory spandex, it can be fixed in a relatively flat state, facilitating folding and storage.

[0010] The first objective of this invention is to provide a method for producing a temperature-sensitive weft-knitted air-layer down jacket fabric, wherein the method involves knitting a double-sided air-layer structure on a double-sided jacquard circular knitting machine.

[0011] Among them, the surface woven with ordinary fiber is designated as S1, the surface woven with shape memory spandex / ordinary fiber core-spun yarn is designated as S2, and the connecting thread connecting S1 and S2 is made of ordinary fiber;

[0012] In a weaving cycle, S1 is always woven with ordinary fibers in a loop form, and S2 is always woven with shape memory spandex / ordinary fiber core-spun yarn in a loop form. When S1 and S2 have woven a certain number of rows, ordinary fibers are used to connect S1 and S2 in a loop form to form an intermediate connecting yarn.

[0013] The connecting wires form a horizontal stripe appearance or a wavy appearance.

[0014] In one embodiment of the present invention, the production method of the temperature-sensitive weft-knitted air-layer down jacket fabric specifically includes the following steps:

[0015] (1) Material selection: shape memory spandex / ordinary fiber core-spun yarn and ordinary fiber are used as raw materials;

[0016] (2) Weaving:

[0017] Double-sided jacquard circular knitting machine is used to weave double-sided air layer structure. Ordinary fiber is used to weave S1 in a loop form, and shape memory spandex / ordinary fiber core-spun yarn is used to weave S2 in a loop form. After S1 and S2 have been woven for 20 to 100 rows, ordinary fiber is used to connect S1 and S2 in a loop form to form an intermediate connecting yarn.

[0018] (3) Post-processing, testing, and packaging.

[0019] In one embodiment of the present invention, the content of ordinary fibers in the temperature-sensitive weft-knitted air-layer down jacket fabric is 60%-75%, and the content of shape memory spandex / ordinary fiber core-spun yarn is 25%-40%, where "%" represents mass percentage.

[0020] In one embodiment of the present invention, the ordinary fiber is nylon filament or polyester filament, specifically semi-dull nylon DTY and semi-dull polyester DTY; wherein, semi-dull nylon DTY is 100D-200D and semi-dull polyester DTY is 100D-200D.

[0021] In one embodiment of the present invention, the shape memory spandex / ordinary fiber core-spun yarn is specifically a shape memory spandex / nylon core-spun yarn or a shape memory spandex / polyester core-spun yarn; wherein, the shape memory spandex / nylon core-spun yarn has a specification of 100-140D / 40D; the shape memory spandex / polyester core-spun yarn has a specification of 100-140D / 40D; the nylon or polyester used has a specification of 40D / 48F; and the shape memory spandex used has a specification of 100-140D.

[0022] In one embodiment of the present invention, the transition temperature range of shape memory spandex / ordinary fiber core-spun yarn is 23-34°C.

[0023] In one embodiment of the present invention, the yarn covering process of shape memory spandex / ordinary fiber core-spun yarn is as follows:

[0024] Shape memory spandex is used as the core, and polyester or nylon is used as the outer yarn. Spinning is carried out with a draw ratio of 3.0-4.0 and a twist of 1000-1300 twists / m to obtain shape memory spandex / ordinary fiber core-spun yarn.

[0025] In one embodiment of the present invention, the shape memory spandex bare yarn in the shape memory spandex / ordinary fiber core-spun yarn is 100-140D; and the switching temperature is 34°C. The shape memory function can be triggered when the ambient temperature is higher than 34°C. That is, the shape memory spandex has weak recovery force when the temperature is below room temperature (23°C), and exhibits weak elasticity. At the same time, under this temperature condition, the deformation (stretched length) of the spandex yarn can be fixed to a certain extent and will not immediately return to the shape (length) before being stretched. However, when the temperature of the shape memory spandex itself is close to the human body temperature (34°C or above), the spandex will return to its shape (length) before being stretched in a short time and regain its elasticity.

[0026] In one embodiment of the present invention, the distance between the upper and lower needle beds of the double-sided jacquard circular knitting machine is 10-25mm.

[0027] In one embodiment of the present invention, the finishing process includes dyeing and setting; wherein the dyeing is conventional dyeing; when the raw material is polyester, the setting temperature is 175-195℃; when the raw material is nylon, the setting temperature is 160-180℃.

[0028] The second objective of this invention is to prepare a temperature-sensitive weft-knitted air-layer down jacket fabric using the method described herein.

[0029] In one embodiment of the present invention, the weight of the temperature-sensitive weft-knitted air-layer down jacket fabric is 200-450 g / m². 2 .

[0030] The third objective of this invention is the application of the temperature-sensitive weft-knitted air-layer down jacket fabric described herein in the field of functional textile manufacturing.

[0031] The fourth objective of this invention is to provide a down jacket that is warm and easy to fold and store, which is prepared using the temperature-sensitive weft-knitted air-layer down jacket fabric described in this invention.

[0032] [Beneficial Effects]

[0033] (1) The temperature-sensitive weft-knitted air-layer down jacket fabric of the present invention is processed by finishing, and the deformation of shape memory spandex can be fixed, and the fabric is in a flat state. When the formed temperature-sensitive weft-knitted air-layer down jacket fabric is used in clothing and worn on the human body, the temperature reaches above the transformation temperature of shape memory spandex, triggering the shape memory effect. The shape memory spandex shrinks, which causes S2 in the double-layer fabric to shrink, causing S1, which does not shrink, to arch. The fabric can store more air, thereby improving its warmth retention performance. Compared with fabrics without spandex and without shrinkage, the warmth retention performance is improved, the thermal resistance is greater, and the warmth retention rate is increased by 5.61%.

[0034] (2) The temperature-sensitive weft-knitted air-layer down jacket fabric of the present invention, below the switching temperature of the shape memory spandex, can fix the deformation of the shape memory spandex to a certain extent and will not immediately return to the shape before being stretched, so that the air-layer fabric can be in a flat state, which is convenient for folding and storage. After the fabric is fixed flat, the fabric thickness is reduced by about 4mm compared with the fabric shrinking and arching.

[0035] (3) The temperature-sensitive weft-knitted air layer down jacket fabric of the present invention can form a variety of appearances such as equidistant horizontal stripes, unequal horizontal stripes and different wave patterns by changing the connection position of the connecting yarn, so that the fabric can form a pattern to meet people's requirements for aesthetics. Attached Figure Description

[0036] Figure 1 This is the weaving pattern for the base fabric S1.

[0037] Figure 2 This is the weaving pattern for shape memory spandex / nylon (polyester) core-spun yarn base fabric S2.

[0038] Figure 3 This is a weaving diagram of nylon connecting yarns for a horizontal striped air-layer fabric.

[0039] Figure 4 The diagrams show the appearance of three fabrics, where (a) is a horizontal stripe pattern, (b) is a zigzag wave pattern, and (c) is a curved wave pattern.

[0040] Figure 5 This is a schematic diagram of the fabric structure after it shrinks due to the spandex. Detailed Implementation

[0041] The preferred embodiments of the present invention are described below. It should be understood that the embodiments are for better explanation of the present invention and are not intended to limit the present invention.

[0042] Test method:

[0043] Thermal insulation performance testing method:

[0044] The thermal and humidity resistance tester was used for testing, as detailed below:

[0045] Prepare 5 test samples, each 30cm x 30cm in size; adjust the surface temperature T of the test plate. m The temperature in the climate chamber is 35℃. a The temperature is 20℃, the relative humidity is 65%, and the air velocity is v. a The speed is 1 m / s; without any fabric, perform a blank test; place the sample on the test plate, wait for the testing instrument to complete the test, and repeat the test 5 times; record the data and calculate the average value.

[0046] Raw materials used in the examples:

[0047] The preparation method of shape memory spandex (ordinary spandex) / nylon (polyester) core-spun yarn is as follows:

[0048] Using 140D shape memory spandex (ordinary spandex) as the core and 40D / 48F semi-dull nylon (polyester) as the outer yarn, the yarn is spun at a draw ratio of 3.2 and a twist of 1200 twists / m to prepare core-spun yarn.

[0049] Example 1

[0050] A temperature-sensitive weft-knitted air-layer down jacket fabric, comprising the following percentages by weight: 64.8% nylon and 35.2% shape memory spandex / nylon core-spun yarn;

[0051] The production method of the temperature-sensitive weft-knitted air-layer down jacket fabric specifically includes the following steps:

[0052] (1) Material selection: 140D / 40D shape memory spandex / nylon core-spun yarn and 100D / 72F semi-dull nylon DTY are selected as raw materials;

[0053] (2) Weaving: Weaving is carried out using a double-sided jacquard circular knitting machine;

[0054] Serial number: E28;

[0055] Spacing between upper and lower needle beds: 18mm;

[0056] The base fabric S1 is woven from semi-dull nylon DTY in a loop pattern; the weave pattern is as follows. Figure 1As shown, the upper needle bed is not knitted, and all needles on the lower needle bed are knitted in loops;

[0057] The other backing fabric S2 is woven in a loop pattern using shape memory spandex / nylon core-spun yarn; the weaving pattern is as follows. Figure 2 As shown, the lower needle bed is not knitted, and all needles on the upper needle bed are knitted in loops;

[0058] Semi-dull nylon DTY is used to weave the connecting yarn in a loop pattern; the weaving pattern is as follows. Figure 3 As shown, the needles on the upper and lower needle beds alternately emerge, knitting in a tucked loop pattern to form a shape like... Figure 4 (a) has a horizontal stripe appearance;

[0059] The connecting wires are spaced 80 rows apart;

[0060] After weaving is completed, the raw fabric is obtained, weighed, bagged, and put into storage.

[0061] (3) Finishing: Setting at 180℃;

[0062] (4) Testing and packaging.

[0063] After the above processes, a striped, temperature-sensitive weft-knitted air-layer down jacket fabric with a weight of 248g / m² can be obtained. 2 .

[0064] Example 2

[0065] A temperature-sensitive weft-knitted air-layer down jacket fabric, comprising the following percentages by weight: 64.1% polyester and 34.9% shape memory spandex / polyester core-spun yarn;

[0066] The production method of the temperature-sensitive weft-knitted air-layer down jacket fabric specifically includes the following steps:

[0067] (1) Material selection: 140D / 40D shape memory spandex / polyester core-spun yarn and 100D / 72F semi-dull polyester DTY are selected as raw materials;

[0068] (2) Weaving: Weaving is carried out using a double-sided jacquard circular knitting machine;

[0069] Serial number: E28;

[0070] Spacing between upper and lower needle beds: 18mm;

[0071] The base fabric S1 is woven from semi-dull polyester DTY in a loop pattern; the weave pattern is as follows. Figure 1 As shown, the upper needle bed is not knitted, and all needles on the lower needle bed are knitted in loops;

[0072] The other backing fabric S2 is woven in a loop pattern using shape memory spandex / polyester core-spun yarn; the weaving pattern is as follows. Figure 2As shown, the lower needle bed is not knitted, and all needles on the upper needle bed are knitted in loops;

[0073] Semi-dull polyester DTY is used to weave connecting yarns in a loop pattern; the weaving pattern is as follows. Figure 3 As shown, the needles on the upper and lower needle beds alternately emerge, knitting in a tucked loop pattern to form a shape like... Figure 4 (a) has a horizontal stripe appearance;

[0074] The connecting wires are spaced 80 rows apart;

[0075] After weaving is completed, the raw fabric is obtained, weighed, bagged, and put into storage.

[0076] (3) Finishing: Setting at 190℃;

[0077] (4) Testing and packaging.

[0078] After the above processes, a striped, temperature-sensitive weft-knitted air-layer down jacket fabric with a weight of 252g / m² can be obtained. 2 .

[0079] Example 3

[0080] A temperature-sensitive weft-knitted air-layer down jacket fabric, comprising the following percentages by weight: 65.3% nylon and 34.7% shape memory spandex / nylon core-spun yarn;

[0081] The production method of the temperature-sensitive weft-knitted air-layer down jacket fabric specifically includes the following steps:

[0082] (1) Material selection: 140D / 40D shape memory spandex / nylon core-spun yarn and 100D / 72F semi-dull nylon DTY are selected as raw materials;

[0083] (2) Weaving: Weaving is carried out using a double-sided jacquard circular knitting machine;

[0084] Serial number: E28;

[0085] Spacing between upper and lower needle beds: 18mm;

[0086] The base fabric S1 is woven from semi-dull nylon DTY in a loop pattern; the weave pattern is as follows. Figure 1 As shown, the upper needle bed is not knitted, and all needles on the lower needle bed are knitted in loops;

[0087] The other backing fabric S2 is woven in a loop pattern using shape memory spandex / nylon core-spun yarn; the weaving pattern is as follows. Figure 2 As shown, the lower needle bed is not knitted, and all needles on the upper needle bed are knitted in loops;

[0088] The connecting yarn is woven from nylon in a loop pattern (the connecting points are arranged in a herringbone pattern, forming a shape like...). Figure 4 (b) the zigzag wave pattern appearance);

[0089] The connecting wires are spaced 80 rows apart;

[0090] After weaving is completed, the raw fabric is obtained, weighed, bagged, and put into storage.

[0091] (3) Finishing: Setting at 180℃;

[0092] (4) Testing and packaging.

[0093] After the above processes, a temperature-sensitive weft-knitted air-layer down jacket fabric with a zigzag wave pattern can be obtained, with a weight of 263g / m². 2 .

[0094] Comparative Example 1

[0095] Following the method of Example 1, only the fineness of the shape memory spandex in the shape memory spandex / nylon core-spun yarn is reduced, so that the specification of the shape memory spandex / nylon core-spun yarn is 50D / 40D;

[0096] Specifically as follows:

[0097] A temperature-sensitive weft-knitted air-layer down jacket fabric, comprising the following percentages by weight: 81.5% nylon and 18.5% shape memory spandex / nylon core-spun yarn;

[0098] The production method of the temperature-sensitive weft-knitted air-layer down jacket fabric specifically includes the following steps:

[0099] (1) Material selection: 50D / 40D shape memory spandex / nylon core-spun yarn and 100D / 72F semi-dull nylon DTY are selected as raw materials;

[0100] (2) Weaving: Weaving is carried out using a double-sided jacquard circular knitting machine;

[0101] Serial number: E28;

[0102] Spacing between upper and lower needle beds: 18mm;

[0103] The base fabric S1 is woven from semi-dull nylon DTY in a loop pattern; the weave pattern is as follows. Figure 1 As shown, the upper needle bed is not knitted, and all needles on the lower needle bed are knitted in loops;

[0104] The other backing fabric S2 is woven in a loop pattern using shape memory spandex / nylon core-spun yarn; the weaving pattern is as follows. Figure 2 As shown, the lower needle bed is not knitted, and all needles on the upper needle bed are knitted in loops;

[0105] Semi-dull nylon DTY is used to weave the connecting yarn in a loop pattern; the weaving pattern is as follows. Figure 3 As shown, the needles on the upper and lower needle beds alternately emerge, knitting in a tucked loop pattern to form a shape like... Figure 4 (a) has a horizontal stripe appearance;

[0106] The connecting wires are spaced 80 rows apart;

[0107] After weaving is completed, the raw fabric is obtained, weighed, bagged, and put into storage.

[0108] (3) Finishing: Setting at 180℃;

[0109] (4) Testing and packaging.

[0110] After the above process, the striped, temperature-sensitive weft-knitted air-layer down jacket fabric of this embodiment can be obtained, with a weight of 221g / m². 2 .

[0111] Comparative Example 2

[0112] Following the method of Example 1, only the shape memory spandex / nylon core-spun yarn is replaced with ordinary spandex / nylon core-spun yarn;

[0113] Specifically as follows:

[0114] A temperature-sensitive weft-knitted air-layer down jacket fabric, composed of the following percentages by weight: 63.7% nylon and 36.3% ordinary spandex / nylon core-spun yarn;

[0115] The production method of the temperature-sensitive weft-knitted air-layer down jacket fabric specifically includes the following steps:

[0116] (1) Material selection: 140D / 40D ordinary spandex / nylon core-spun yarn and 100D / 72F semi-dull nylon DTY are selected as raw materials;

[0117] (2) Weaving: Weaving is carried out using a double-sided jacquard circular knitting machine;

[0118] Serial number: E28;

[0119] Spacing between upper and lower needle beds: 18mm;

[0120] The base fabric S1 is woven from semi-dull nylon DTY in a loop pattern; the weave pattern is as follows. Figure 1 As shown, the upper needle bed is not knitted, and all needles on the lower needle bed are knitted in loops;

[0121] The other backing fabric S2 is woven in loops using ordinary spandex / nylon core-spun yarn; the weaving pattern is as follows. Figure 2 As shown, the lower needle bed is not knitted, and all needles on the upper needle bed are knitted in loops;

[0122] Semi-dull nylon DTY is used to weave the connecting yarn in a loop pattern; the weaving pattern is as follows. Figure 3 As shown, the needles on the upper and lower needle beds alternately emerge, knitting in a tucked loop pattern to form a shape like... Figure 4(a) has a horizontal stripe appearance;

[0123] The connecting wires are spaced 80 rows apart;

[0124] After weaving is completed, the raw fabric is obtained, weighed, bagged, and put into storage.

[0125] (3) Finishing: Setting at 180℃;

[0126] (4) Testing and packaging.

[0127] After the above processes, the down jacket fabric can be obtained with a weight of 253g / m². 2 .

[0128] Comparative Example 3:

[0129] Following the method of Example 1, only the shape memory spandex / nylon core-spun yarn was replaced with 100D / 72F semi-dull nylon DTY;

[0130] Specifically as follows:

[0131] The production method of the temperature-sensitive weft-knitted air-layer down jacket fabric specifically includes the following steps:

[0132] (1) Material selection: 100D / 72F semi-dull nylon DTY is selected as raw material;

[0133] (2) Weaving: Weaving is carried out using a double-sided jacquard circular knitting machine;

[0134] Serial number: E28;

[0135] Spacing between upper and lower needle beds: 18mm;

[0136] The base fabric S1 is woven from semi-dull nylon DTY in a loop pattern; the weave pattern is as follows. Figure 1 As shown, the upper needle bed is not knitted, and all needles on the lower needle bed are knitted in loops;

[0137] The other backing fabric S2 is woven from semi-dull nylon DTY in a loop pattern; the weaving pattern is as follows. Figure 2 As shown, the lower needle bed is not knitted, and all needles on the upper needle bed are knitted in loops;

[0138] Semi-dull nylon DTY is used to weave the connecting yarn in a loop pattern; the weaving pattern is as follows. Figure 3 As shown, the needles on the upper and lower needle beds alternately emerge, knitting in a tucked loop pattern to form a shape like... Figure 4 (a) has a horizontal stripe appearance;

[0139] The connecting wires are spaced 80 rows apart;

[0140] After weaving is completed, the raw fabric is obtained, weighed, bagged, and put into storage.

[0141] (3) Finishing: Setting at 180℃;

[0142] (4) Testing and packaging.

[0143] After the above processes, the down jacket fabric can be obtained with a weight of 229g / m². 2 .

[0144] The down jacket fabrics obtained in the examples and comparative examples were subjected to performance tests. Specifically, fabric samples of Examples 1, 2, 3, Comparative Example 1, Comparative Example 2, and Comparative Example 3, each measuring 32cm × 32cm, were taken; the samples were sewn together, leaving a down filling opening, and filled with 100g / m² of down filling material. 2 White goose down, sew the filling opening, and the sewn fabric is 30cm×30cm; after filling the sample, lay it flat, and after the goose down in the bladder is evenly distributed, measure the thickness of the sample when it is fixed and flat below the switching temperature (34℃), the thickness of the sample after shrinkage of the S2 surface above the switching temperature (34℃), and the warmth retention performance.

[0145] Specifically as follows:

[0146] Table 1 Performance Tests of Down Jacket Fabrics

[0147]

[0148] As can be seen from Table 1:

[0149] Examples 1, 2, and 3 can all be fixed in a relatively flat state. When the temperature is higher than the switching temperature, the S2 surface of the fabric shrinks, increasing the fabric thickness; the heat retention performance is good.

[0150] Compared with Example 1, Comparative Example 1 has a lower content of shape memory spandex, less shrinkage on the S2 side, and the S1 side cannot bulge to increase the fabric thickness and air content, resulting in relatively poor warmth retention of the fabric.

[0151] Compared with Example 1, Comparative Example 2 uses ordinary spandex, the fabric does not have temperature-sensitive shape memory properties, the fabric is thicker, which is not conducive to folding and storage; the warmth retention performance is similar.

[0152] Compared with Example 1, Comparative Example 3 does not use spandex, so the S2 side of the fabric does not shrink and the fabric thickness cannot be increased; its warmth retention performance is the worst.

[0153] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A method for producing a warm-feeling weft-knitted air-layered down jacket fabric, characterized by, The method is to weave double-sided air layer tissue on a double-sided jacquard circular knitting machine; The face knitted by ordinary fibers is marked as S1, the face knitted by shape memory spandex / ordinary fiber core spun yarn is marked as S2, and the connecting yarn connecting S1 and S2 is made of ordinary fibers. In one knitting cycle, S1 is always knitted in loop form by ordinary fibers, S2 is always knitted in loop form by shape memory spandex / ordinary fiber core spun yarn, and when S1 and S2 are knitted for 20-100 courses, the ordinary fibers are used to connect S1 and S2 in tuck form to form the intermediate connecting yarn. The connecting yarn forms a horizontal stripe appearance or a wavy appearance. The mass percentage of the content of ordinary fibers in the temperature-sensitive weft-knitted air layer down jacket fabric is 60%-75%, and the mass percentage of the content of shape memory spandex / ordinary fiber core spun yarn is 25%-40%; the shape memory spandex / ordinary fiber core spun yarn is specifically shape memory spandex / nylon core spun yarn or shape memory spandex / polyester core spun yarn; the specification of the shape memory spandex / nylon core spun yarn is 100-140D / 40D; and the specification of the shape memory spandex / polyester core spun yarn is 100-140D / 40D.

2. The production method of the warm-feeling weft-knitted air layer down jacket fabric according to claim 1, characterized in that, The production method of the temperature-sensitive weft-knitted air layer down jacket fabric specifically comprises the following steps: (1) selecting materials: shape memory spandex / ordinary fiber core spun yarn and ordinary fibers are used as raw materials; (2) weaving: The double-sided air layer tissue is knitted on a double-sided jacquard circular knitting machine, S1 is knitted in loop form by ordinary fibers, S2 is knitted in loop form by shape memory spandex / ordinary fiber core spun yarn, and when S1 and S2 are knitted for 20-100 courses, the ordinary fibers are used to connect S1 and S2 in tuck form to form the intermediate connecting yarn; (3) post-finishing, detection, and packaging.

3. The method of producing a warm-feeling, weft-knitted, air-layered down jacket fabric according to claim 2, characterized in that, The content of ordinary fibers in the temperature-sensitive weft-knitted air layer down jacket fabric accounts for 60%-75%, the content of shape memory spandex / ordinary fiber core spun yarn accounts for 25%-40%, and "%" is the mass percentage.

4. The method of producing a warm-feeling weft-knitted air layer down jacket fabric according to claim 2, characterized in that, The shape memory spandex / ordinary fiber core spun yarn is specifically shape memory spandex / nylon core spun yarn or shape memory spandex / polyester core spun yarn; the specification of the shape memory spandex / nylon core spun yarn is 100-140D / 40D; and the specification of the shape memory spandex / polyester core spun yarn is 100-140D / 40D.

5. The method of producing a warm-feeling weft-knitted air layer down jacket fabric according to claim 2, characterized in that, The transformation temperature range of the shape memory spandex / ordinary fiber core spun yarn is 23-34℃.

6. The method of producing a warm-feeling weft-knitted air layer down jacket fabric according to claim 2, characterized in that, The distance between the upper needle bed and the lower needle bed of the double-sided jacquard circular knitting machine is 10-25mm.

7. The method of producing a warm-feeling weft-knitted air layer down jacket fabric according to claim 2, characterized in that, The post-finishing includes one of dyeing and setting; the dyeing is conventional dyeing; when the raw material is polyester, the setting temperature is 175-195℃; and when the raw material is nylon, the setting temperature is 160-180℃.

8. The temperature-sensitive weft-knitted air layer down jacket fabric prepared by the production method of the temperature-sensitive weft-knitted air layer down jacket fabric according to any one of claims 1-7.

9. The application of the temperature-sensitive weft-knitted air layer down jacket fabric according to claim 8 in the field of functional textile preparation.

10. A warm and conveniently foldable and storable down jacket, characterized by, The temperature-sensitive weft-knitted air layer down jacket fabric is prepared by the temperature-sensitive weft-knitted air layer down jacket fabric according to claim 8.

Images