Multi-channel breathable down jacket fabric and down jacket

Abstract

The present application relates to a kind of multi-channel air-permeable down jacket fabric and down jacket, the fabric includes bottom layer and face layer and is arranged between bottom layer and face layer multi-channel middle layer;The tear-resistant middle layer multi-channel middle layer includes oblique symmetry and is arranged on the connecting seat one and connecting seat two of the opposite side of bottom layer and face layer, the middle part of the connecting seat one and connecting seat two protruding position extends extension, the two sides of the connecting position of the connecting seat one and connecting seat two and extension are respectively provided with hollow connecting ring;The tail of the extension of the connecting seat one is bent and is heat-pressed and fixed in the outside of the connecting ring of connecting seat two.The present application is structured by setting multi-channel middle layer, including the cavity one and diamond-shaped cavity two formed by extension and connecting ring, constructs complex and stable air flow path, realizes the effect of air-permeable and not warm, so that the fabric of the present application has good air permeability, warmth retention, tear resistance and washing durability.

Description

Technical Field

[0001] This invention belongs to the field of clothing fabric technology, specifically relating to a multi-channel breathable down jacket fabric and a down jacket. Background Technology

[0002] Down jackets, as an important category of winter clothing, have long faced a technical dilemma: the balance between warmth and breathability. In current technology, to achieve good warmth retention, down jacket fabrics typically employ high-density weaves or coating composite processes to prevent heat loss and down leakage. However, such structures often result in a significant decrease in fabric breathability. Moist and hot air generated by the wearer during exercise or temperature changes is difficult to expel and tends to condense inside the garment, causing stuffiness, discomfort, and even affecting the warmth retention effect.

[0003] On the other hand, some solutions improve breathability by setting ventilation holes in the fabric or using a single layer of lightweight fabric. However, while this method achieves breathability, it is difficult to effectively prevent the movement of down filling, and the warmth retention is greatly reduced, making it difficult to meet the needs of use in cold environments. Therefore, how to achieve effective breathability while ensuring the excellent warmth retention of the fabric, and at the same time improve the tear resistance and wash durability of the fabric, has become a technical problem that urgently needs to be solved in the field of down jacket fabric technology. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-channel breathable down jacket fabric and down jacket in order to solve the above problems.

[0005] The present invention achieves the above objectives through the following technical solutions: A multi-channel breathable down jacket fabric includes an underlayer, an outer layer, and a multi-channel middle layer disposed between the underlayer and the outer layer; The tear-resistant multi-channel middle layer includes a first connecting seat and a second connecting seat arranged obliquely and symmetrically on the opposite side of the bottom layer and the top layer. An extension extends from the middle protrusion of the first connecting seat and the second connecting seat, and hollow connecting rings are respectively provided on both sides of the connection position between the first connecting seat and the second connecting seat and the extension. The tail of the extension of the first connector is bent and hot-pressed to the outside of the connecting ring of the second connector. The tail of the extension of the second connector is bent and hot-pressed to the outside of the connecting ring of the first connector. A cavity 1 with wide ends and narrow waist is formed between the upper and lower extensions. Both sides of the cavity 1 are enclosed by the upper and lower connecting rings and the extensions to form a rhomboid cavity 2.

[0006] As a further optimization of the present invention, the second cavity is provided with a support member.

[0007] As a further optimization of the present invention, the support member includes a horizontal / vertical / diagonal / cross-shaped connecting piece that connects the upper and lower connecting rings and / or extensions.

[0008] As a further optimization of the present invention, when the support member is a cross-shaped connecting piece, the four connecting ends of the connecting piece are respectively heat-pressed and fixed at the four connecting positions of the extension and the connecting ring.

[0009] As a further optimization of the present invention, the first connecting seat, the second connecting seat, the extension, the connecting ring, and the support are all made of polyamide or polypropylene.

[0010] As a further optimization of the present invention, the preparation method of the multi-channel breathable down jacket fabric includes the following specific steps: Step 1: Connector 1, Connector 2, and an extension connected to Connector 1 and Connector 2 are integrally formed on the bottom and top surfaces using a mold. The tail of the extension is bent. A hollow connecting ring is integrally formed using a mold. After drilling holes in Connector 1, Connector 2, the extension, and the connecting ring, the two connecting rings are hot-pressed and fixed to Connector 1 and the extension, and symmetrically distributed on both sides of the extension. Step 2: Place the bottom layer and the top layer with the connecting seat 1 and connecting seat 2 on opposite sides at an oblique symmetrical angle. Place the tail of the extension of connecting seat 1 against the outside of the connecting ring of connecting seat 2, and place the tail of the extension of connecting seat 2 against the outside of the connecting ring of connecting seat 1. Heat-press the tail of the extension to the outside of the connecting ring to fix it. A cavity 1 with wide ends and narrow waist is formed between the upper and lower extensions. Both sides of cavity 1 are enclosed by the upper and lower connecting rings and the extension to form a diamond-shaped cavity 2, thus obtaining a multi-channel breathable down jacket fabric.

[0011] As a further optimization of the present invention, in step one, the support member is obtained by integral molding with a mold; in step two, the support member is placed in the cavity two, and the connecting end of the support member is hot-pressed and fixed on the extension and / or connecting ring.

[0012] As a further optimization of the present invention, in steps one and two, the pressure of the hot pressing treatment is 1-8 MPa, the temperature is 120-150℃, the number of hot pressing cycles is 2-5, and the hot pressing time for each cycle is 2-8 min.

[0013] As a further optimization of the present invention, the pore size of the perforation process is 2-10 μm, and the pore density is 10. 6 -10 7 pcs / cm 2 .

[0014] A down jacket made of the multi-channel breathable down jacket fabric described above.

[0015] The beneficial effects of this invention are as follows: This invention constructs a complex and stable airflow path by setting a multi-channel middle layer structure, including a cavity one formed by the extension and the connecting ring and a rhomboid cavity two, to achieve the effect of breathability without heat loss. This makes the fabric of this invention have both good breathability and warmth retention. Through the interlocking support structure, external forces are effectively dispersed and the interlayer bonding strength is improved, so that the fabric exhibits excellent tear resistance and wash durability. Attached Figure Description

[0016] Figure 1 This is a cross-sectional schematic diagram of the multi-channel breathable down jacket fabric of Embodiment 1 of the present invention.

[0017] Figure 2 This is a cross-sectional schematic diagram of the multi-channel middle layer of Embodiment 1 of the present invention.

[0018] Figure 3 This is a partial structural diagram of the multi-channel middle layer of Embodiment 1 of the present invention.

[0019] Figure 4 This is a cross-sectional schematic diagram of different support members in Embodiment 2 of the present invention.

[0020] Figure 5 This is a cross-sectional schematic diagram of the multi-channel breathable down jacket fabric of Embodiment 2 of the present invention.

[0021] Figure 6 This is a cross-sectional schematic diagram of the multi-channel breathable down jacket fabric of Comparative Example 1 of the present invention.

[0022] Figure 7 This is a cross-sectional schematic diagram of the multi-channel breathable down jacket fabric of Comparative Example 2 of the present invention.

[0023] In the diagram: 1. Bottom layer; 2. Multi-channel middle layer; 21. Connector 1; 22. Connector 2; 23. Extension; 24. Connecting ring; 25. Support component; 3. Top layer. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0025] Material 1. In this application, the bottom layer 1 is commercially available pure cotton fabric, and the top layer 3 is commercially available 210T spring spun fabric.

[0026] 2. In order to achieve the air permeability effect, the connecting seat 1 21, connecting seat 22, extension 23, and connecting ring 24 are all perforated. The perforation diameter (laser drilling) is 2-10 μm, and the pore density is 10. 6 -10 7 pcs / cm 2 In the following experiments, the pore size was 6±2 μm and the pore density was (2-8)×10⁶ pores / cm². 2 .

[0027] Unless otherwise specified, the methods used in this embodiment are all conventional methods known to those skilled in the art, and the reagents and materials used are all commercially available products.

[0028] method To investigate the effects of different structural designs of the multi-channel middle layer 2 on the breathability, warmth retention, and tear resistance of multi-channel breathable down jacket fabrics, the following technical solutions were designed in Examples 1-2 and Comparative Examples 1-3, as detailed below: Example 1

[0029] like Figure 1-3 As shown, a multi-channel breathable down jacket fabric includes a bottom layer 1, a top layer 3, and a multi-channel middle layer 2 disposed between the bottom layer 1 and the top layer 3. The tear-resistant multi-channel middle layer 2 includes a first connecting seat 21 and a second connecting seat 22 arranged obliquely and symmetrically on the opposite side of the bottom layer 1 and the top layer 3. An extension 23 extends from the middle protrusion of the first connecting seat 21 and the second connecting seat 22. Hollow connecting rings 24 are respectively provided on both sides of the connection position between the first connecting seat 21 and the second connecting seat 22 and the extension 23. The tail of the extension 23 of the first connector 21 is bent and hot-pressed to the outside of the connecting ring 24 of the second connector 22. The tail of the extension 23 of the second connector 22 is bent and hot-pressed to the outside of the connecting ring 24 of the first connector 21. A cavity 1 with wide ends and narrow waist is formed between the upper and lower extensions 23. Both sides of the cavity 1 are enclosed by the upper and lower connecting rings 24 and the extensions 23 to form a rhomboid cavity 2.

[0030] Preferably, the first connector 21, the second connector 22, the extension 23, and the connecting ring 24 are all made of polyamide or polypropylene.

[0031] The preparation method of the multi-channel breathable down jacket fabric in this embodiment includes the following specific steps: Step 1: Connector 1 21, connector 22, and extension 23 connected to connector 1 21 and connector 22 are integrally formed on the surfaces of the bottom layer 1 and the top layer 3 by a mold. The tail of the extension 23 is bent. Hollow connecting ring 24 is integrally formed by a mold. After drilling holes in connector 1 21, connector 22, extension 23 and connecting ring 24, two connecting rings 24 are hot-pressed and fixed on connector 1 21 and extension 23 and symmetrically distributed on both sides of extension 23. Step 2: Place the bottom layer 1 and the top layer 3 with the connecting seat 1 21 and the connecting seat 22 on opposite sides. Place the tail of the extension 23 of the connecting seat 1 21 against the outside of the connecting ring 24 of the connecting seat 22, and the tail of the extension 23 of the connecting seat 22 against the outside of the connecting ring 24 of the connecting seat 1 21. Heat-press the tail of the extension 23 to the outside of the connecting ring 24 to fix it. A cavity 1 with wide ends and narrow waist is formed between the upper and lower extensions 23. Both sides of the cavity 1 are enclosed by the upper and lower connecting rings 24 and the extensions 23 to form a rhomboid cavity 2, thus obtaining a multi-channel breathable down jacket fabric. In this embodiment, the hot pressing fixation in step one specifically involves a hot pressing pressure of 5 MPa, a temperature of 138°C, two hot pressing cycles, and a hot pressing time of 6 minutes for each cycle. The hot pressing fixation in step two is specifically as follows: the pressure of the hot pressing treatment is 8MPa, the temperature is 142℃, the number of hot pressing cycles is 5, and the hot pressing time for each cycle is 5min.

[0032] Example 2

[0033] like Figure 3-5 As shown, a multi-channel breathable down jacket fabric, based on embodiment 1, has a support member 25 provided in the cavity 2 of this embodiment; The support member 25 includes a horizontal / vertical / diagonal / cross-shaped connecting piece that connects the upper and lower connecting rings 24 and / or the extension 23, as detailed below: The first type is a vertical connecting piece that connects the upper and lower connecting rings 24; The second type is a horizontal connecting piece that connects the upper and lower extensions 23; The third type is a connecting piece that intersects horizontally and vertically, with the horizontal connecting end connecting to the upper and lower extensions 23 and the vertical connecting end connecting to the upper and lower connecting rings 24. The fourth type is an oblique connecting piece that connects the two obliquely symmetrical positions of the upper and lower extensions 23 and the connecting ring 24. The fifth type is an oblique connecting piece that connects the two obliquely symmetrical positions of the upper and lower extensions 23 and the connecting ring 24. The sixth type is a connecting piece with two diagonally intersecting pieces, connecting the upper and lower extensions 23 and the connecting ring 24 at four connection points.

[0034] Based on Example 1, the preparation method of the multi-channel breathable down jacket fabric in this embodiment includes: in step one, a support member 25 is obtained by integral molding with a mold; in step two, the support member 25 is placed in the cavity two, and the connecting end of the support member 25 is hot-pressed and fixed on the extension 23 and / or the connecting ring 24. The hot pressing process specifically involves a pressure of 3 MPa, a temperature of 130°C, 3 hot pressing cycles, and a 5-minute hot pressing time for each cycle. Everything else is consistent with Example 1.

[0035] Comparative Example 1 like Figure 6 As shown in this comparative example, a multi-channel breathable down jacket fabric includes a bottom layer 1, a top layer 3, and a multi-channel middle layer 2 disposed between the bottom layer 1 and the top layer 3. The multi-channel middle layer 2 includes a first connector 21 and a second connector 22 that are obliquely symmetrically arranged on opposite sides of the bottom layer 1 and the top layer 3. An arc-shaped extension 23 extends from the middle protrusion of the first connector 21 and the second connector 22. The tail of the extension 23 on the first connector 21 is hot-pressed and fixed to the second connector 22, and the tail of the extension 23 on the second connector 22 is hot-pressed and fixed to the first connector 21. Everything else is consistent with Example 2.

[0036] Comparative Example 2 like Figure 7 As shown in this comparative example, a multi-channel breathable down jacket fabric includes a bottom layer 1, a top layer 3, and a multi-channel middle layer 2 disposed between the bottom layer 1 and the top layer 3. The multi-channel middle layer 2 includes a first connector 21 and a second connector 22 arranged obliquely and symmetrically on opposite sides of the bottom layer 1 and the top layer 3. An extension 23 extends from the middle protrusion of the first connector 21 and the second connector 22. The tail of the extension 23 of the first connector 21 is bent and hot-pressed to the root of the extension 23 of the second connector 22. The tail of the extension 23 of the second connector 22 is bent and hot-pressed to the root of the extension 23 of the first connector 21. Everything else is consistent with Example 2.

[0037] Performance testing experiment (1) Test of air permeability and heat preservation performance Fabric samples washed 30 times: The samples were tested for washing according to the procedures specified in GB / T 8629-2017 "Domestic Washing and Drying Procedures for Textile Testing". A type A washing machine was used for the washing test, with a total load of 2.1 kg, a 4N program (normal agitation at 40℃) for 23 minutes, and 30 washing cycles. After the last washing cycle, the samples were dehydrated for 5 minutes and then hung to dry.

[0038] Breathability testing: Breathability was tested against the national standard (GB / T5433) using a YG461G fully automatic fabric breathability meter on the multi-channel breathable down jacket fabrics of Examples 1-2 and Comparative Examples 1-2 (all four sides of the multi-channel breathable down jacket fabric were bound with 5 stitches / cm). Samples were tested in two ways: unwashed fabric and fabrics washed 30 times (washing method as described above). Specific experimental parameters were set as follows: ambient temperature 25℃, relative humidity 68%, pressure difference 110Pa, and breathable area 30cm². 2 The diameter of the air jet nozzle is 0.8 mm. Ten tests were conducted on different parts of each fabric sample, and the average value was taken as the final air permeability data and recorded in Table 1. Thermal insulation performance testing: Thermal insulation performance was tested according to the standard GB / T11048-2008 "Determination of thermal and moisture resistance of textiles under steady-state conditions for physiological comfort". A YG606E textile thermal resistance tester was used to test the multi-channel breathable down jacket fabrics (all four sides of the multi-channel breathable down jacket fabric were bound with 5 stitches / cm) of Examples 1-2 and Comparative Examples 1-2. Samples were divided into unwashed fabric and fabrics washed 30 times (washing method as described above). Five samples were taken for each type of fabric, and the average value was recorded as the final thermal insulation data in Table 1. Table 1. Test data on air permeability and thermal insulation performance

[0039] Experimental conclusion: Data comparison shows that the multi-channel middle layer 2 structure of the present invention, which has cavity one, cavity two and connecting ring 24, can significantly improve the heat preservation performance of the fabric while maintaining excellent air permeability. Among them, the group (6) with cross-shaped support member 25 set in Example 2 has the best heat preservation effect, with clo values ​​of 0.312 and 0.301 after unwashed and after 30 washes, respectively. In contrast, Comparative Example 1 and Comparative Example 2 lack the connecting ring 24 and extension 23. Although the air permeability is relatively high, the heat preservation performance is obviously insufficient. Moreover, the heat preservation performance is severely degraded after 30 washes, while the air permeability is abnormally increased. This indicates that the structure is easily damaged or deformed during the washing process, which shows that the multi-channel structure of the present invention has good washability and structural stability.

[0040] (2) Tear resistance test Tear resistance test: Experimental equipment: Q800 dynamic mechanical analyzer (DMA, TA Instruments, Inc., USA); Experimental method: The multi-channel breathable down jacket fabrics of Examples 1-2 and Comparative Examples 1-2 (the four sides of the multi-channel breathable down jacket fabric are all bound with stitches, 5 stitches / cm) were taken as samples and divided into unwashed fabric and fabric samples washed 30 times (washing method is the same as above). Among them, Example 2 was divided into groups 1 to (6) respectively. Figure 5 Different support components 25 were used in the test. The sample was a long strip with a size of 230×210mm. The sample was placed in a tensile fixture, with one end fixed and the other end movable with the fixture. The temperature was 25℃±2℃, the frequency was set to 5Hz, and the applied stress was gradually increased from 0 at a rate of 6MPa / s. The strain change of the sample was recorded until the sample fractured. The stress at the fracture point was taken as the tensile strength of the sample. The test data are shown in Table 2. Table 2 Tear Resistance Test Data

[0041] Experimental conclusion: The multi-channel middle layer 2 structure design of the present invention can significantly improve the tear resistance of the fabric. Among them, the group (6) with cross-shaped connecting pieces has the most outstanding tear resistance effect. The tensile strength after unwashed and after 30 washes is 31.3 MPa and 30.2 MPa, respectively. This shows that the multi-channel cavity structure constructed by the connecting ring 24 and the bending extension 23 of the present invention can effectively disperse stress and enhance the interlayer bonding strength, thereby giving the fabric excellent tear resistance and washing durability.

[0042] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A multi-channel breathable down jacket fabric, characterized in that: It includes a bottom layer (1) and a top layer (3) as well as a multi-channel middle layer (2) located between the bottom layer (1) and the top layer (3); The tear-resistant multi-channel middle layer (2) includes a first connecting seat (21) and a second connecting seat (22) arranged obliquely and symmetrically on opposite sides of the bottom layer (1) and the top layer (3). An extension (23) extends from the middle protrusion of the first connecting seat (21) and the second connecting seat (22). Hollow connecting rings (24) are respectively provided on both sides of the connection position between the first connecting seat (21) and the second connecting seat (22) and the extension (23). The tail of the extension (23) of the first connector (21) is bent and hot-pressed to the outside of the connecting ring (24) of the second connector (22). The tail of the extension (23) of the second connector (22) is bent and hot-pressed to the outside of the connecting ring (24) of the first connector (21). A cavity one with wide ends and narrow waist is formed between the upper and lower extensions (23). Both sides of the cavity one are enclosed by the upper and lower connecting rings (24) and the extensions (23) to form a rhomboid cavity two.

2. The multi-channel breathable down jacket fabric according to claim 1, characterized in that: The cavity 2 is provided with a support member (25).

3. The multi-channel breathable down jacket fabric according to claim 2, characterized in that: The support member (25) includes a horizontal / vertical / diagonal / cross-shaped connecting piece that connects the upper and lower connecting rings (24) and / or the extension (23).

4. The multi-channel breathable down jacket fabric according to claim 3, characterized in that: When the support member (25) is a cross-shaped connecting piece, the four connecting ends of the connecting piece are respectively heat-pressed and fixed at the four connecting positions of the extension (23) and the connecting ring (24).

5. The multi-channel breathable down jacket fabric according to claim 4, characterized in that: The connecting seat one (21), connecting seat two (22), extension (23), connecting ring (24), and support (25) are all made of polyamide or polypropylene.

6. A multi-channel breathable down jacket fabric according to any one of claims 1-5, characterized in that: The preparation method of the multi-channel breathable down jacket fabric includes the following specific steps: Step 1: Connector 1 (21), connector 2 (22) and extension (23) connected to connector 1 (21) and connector 2 (22) are integrally formed on the surface of the bottom layer (1) and the top layer (3) by mold. The tail of the extension (23) is bent. Hollow connecting ring (24) is integrally formed by mold. After drilling holes in connector 1 (21), connector 2 (22), extension (23) and connecting ring (24), the two connecting rings (24) are hot-pressed and fixed on connector 1 (21) and extension (23) and symmetrically distributed on both sides of extension (23). Step 2: Place the bottom layer (1) and the top layer (3) with the connecting seat 1 (21) and the connecting seat 2 (22) on opposite sides. Place the tail of the extension (23) of the connecting seat 1 (21) against the outside of the connecting ring (24) of the connecting seat 2 (22), and the tail of the extension (23) of the connecting seat 2 (22) against the outside of the connecting ring (24) of the connecting seat 1 (21). Heat press the tail of the extension (23) to the outside of the connecting ring (24) to fix it. A cavity 1 with wide ends and narrow waist is formed between the upper and lower extensions (23). Both sides of the cavity 1 are enclosed by the upper and lower connecting rings (24) and the extension (23) to form a rhomboid cavity 2, thus obtaining a multi-channel breathable down jacket fabric.

7. The multi-channel breathable down jacket fabric according to claim 6, characterized in that: In step one, the support member (25) is obtained by integral molding with a mold; in step two, the support member (25) is placed in the cavity two, and the connecting end of the support member (25) is hot-pressed and fixed on the extension (23) and / or the connecting ring (24).

8. The multi-channel breathable down jacket fabric according to claim 7, characterized in that: In steps one and two, the pressure of the hot pressing treatment is 1-8 MPa, the temperature is 120-150℃, the number of hot pressing cycles is 2-5, and the hot pressing time for each cycle is 2-8 min.

9. The multi-channel breathable down jacket fabric according to claim 6, characterized in that: The pore size of the perforation process is 2-10 μm, and the pore density is 10. 6 -10 7 pcs / cm 2 .

10. A down jacket, characterized in that: Made of the multi-channel breathable down jacket fabric as described in any one of claims 1-9.

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