Down jacket with back heat and humidity internal circulation system and manufacturing method of down jacket

Abstract

The invention discloses a down jacket with a back heat and humidity internal circulation system and a manufacturing method of the down jacket. The back heat and humidity internal circulation system comprises a moisture absorption layer, a heat preservation breathable layer and a heat storage layer. The moisture absorption layer comprises a moisture absorption structure area and an air hole area; the heat-preservation breathable layer comprises breathable layer cloth, a plurality of heat-preservation units and a plurality of groups of control units; each heat preservation unit is of a soft cylindrical channel structure filled with a heat preservation material, and the multiple heat preservation units are vertically arranged on the breathable layer cloth; the control unit is used for controlling the heat preservation unit to be folded to reach a contraction state or stretched to reach an expansion state; when the heat preservation unit is in a contraction state, a breathable unit is formed at the heat preservation breathable layer between the moisture absorption layer and the heat storage layer; the heat storage layer comprises a heat storage lining and a three-proofing fabric. According to the back heat and humidity internal circulation system, on the premise that the basic warm keeping performance of the down jacket is not sacrificed, dynamic circulation adjustment of heat and humidity of the back area is achieved, and comfort and scene adaptability are both considered.

Description

Technical Field

[0001] This invention relates to the field of clothing design technology, and in particular to a down jacket with a back heat and moisture circulation system and its manufacturing method. Background Technology

[0002] In low-temperature environments, down jackets achieve efficient warmth by trapping still air within the three-dimensional loft structure of down fibers, making them widely used in commuting and outdoor activities. However, traditional designs still need optimization in terms of adaptability to different scenarios regarding heat and humidity management, especially in the back area where a comprehensive solution for heat and humidity balance control has not yet been developed. The back is a major area for heat and moisture production in the human body, generating metabolic heat and sweat vapor during activity. To ensure warmth, traditional down jackets use high-density woven fabrics and evenly distributed fillings, which reduces heat loss but results in a low rate of air exchange between the inside and outside of the garment, making it difficult for sweat vapor to escape and creating a localized high-humidity environment. This environment reduces the loft of the down, diminishes its warmth retention, and disrupts the skin's microenvironment balance, leading to discomfort and the risk of catching a cold, a problem that is exacerbated when there is a large temperature difference between indoors and outdoors.

[0003] In existing technologies, fabric modification improves breathability but reduces windproof and warmth retention; optimizing the filling structure sacrifices back warmth; and adding moisture-wicking materials fails to quickly wick away moisture and affects lightweight design—none of these approaches balance the needs for warmth and moisture wicking. Currently, mainstream down jackets on the market, to meet consumers' core demand for "powerful warmth," generally adopt a "high-sealing + high-filling" design approach. This means the outer layer uses a high-density, tightly woven fabric, while the interior uses a uniform, densely packed down filling throughout the garment. These products effectively block heat loss in low-temperature static scenarios (such as prolonged indoor sitting in winter or short-term outdoor stays). However, in dynamic scenarios (such as daily commuting or light outdoor exercise), the problem of heat and moisture in the back area becomes prominent. On the one hand, the sweat vapor produced by the body's metabolism on the back cannot be expelled through the highly sealed fabric and dense filling structure, forming a continuously high-humidity environment between the inner layer of the clothing and the skin. This causes the wearer to feel noticeably sticky. Moreover, when the temperature difference between indoors and outdoors is ≥15℃ (such as moving from -5℃ outdoors to 20℃ indoors), the high-humidity environment will accelerate skin temperature fluctuations and increase the risk of catching a cold. On the other hand, long-term accumulated moisture will adhere to the surface of the down fibers, damaging their fluffy structure. The fill power of white duck down commonly used in the market is mostly 500-600 FP. After getting damp, the fill power will drop to below 400 FP, reducing the amount of still air retained by more than 30%. This directly leads to a decrease in warmth retention, resulting in the common problem of "a significant decrease in warmth retention after wearing for 1-2 hours". Electric heating down jackets have problems such as localized overheating and uneven warmth retention. They also rely on external power supply, resulting in low comfort and inconvenience for prolonged wear or outdoor activities. Summary of the Invention

[0004] Objective: In order to overcome the shortcomings of the existing technology, the present invention provides a down jacket with a back heat and moisture internal circulation system and its manufacturing method, based on which the back heat and moisture internal circulation system takes into account both the warmth retention performance of the down jacket and the function of rapid circulation and expulsion of sweat vapor.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] In a first aspect, the present invention provides a heat and moisture internal circulation system for the back of a down jacket, comprising a moisture-absorbing layer, a heat-insulating and breathable layer, and a heat-storing layer; The moisture-absorbing layer includes a moisture-absorbing structural area and a breathable pore area; The heat-insulating and breathable layer includes a breathable fabric, multiple heat-insulating units, and multiple control units. The heat-insulating unit is a soft cylindrical channel structure filled with heat-insulating material, and multiple heat-insulating units are arranged vertically on the breathable fabric. The control unit is used to control the heat-insulating units to either contract or expand. When the heat-insulating unit is in the contracted state, a breathable unit is formed between the moisture-absorbing layer and the heat-storing layer at the heat-insulating and breathable layer. The heat storage layer includes a heat storage lining and a three-proof fabric.

[0007] The down jacket back heat and moisture internal circulation system provided by this invention integrates differentiated functional components—a moisture-absorbing layer, a heat-insulating and breathable layer, and a heat-storing layer—to achieve directional exhaust and circulation of heat and moisture in the back area of ​​the down jacket while maintaining overall warmth performance. Through a three-layer design of "moisture-absorbing layer - heat-insulating and breathable layer - heat-storing layer," combined with interconnected circulation channels between the layers, a dynamic cycle of "moisture absorption - heat insulation and breathability - heat storage" is achieved, resolving the contradiction between heat preservation and breathability. A control unit is used to switch the expansion / contraction of the heat insulation unit, adjusting the airflow speed through structural changes to adapt to different heat and moisture requirements (low-temperature heat preservation / high-temperature moisture wicking). Differentiated structures are used for different areas of the back (spine ventilation area, scapular moisture absorption area) to precisely match the heat and moisture distribution characteristics of the human back, improving adjustment efficiency.

[0008] In some embodiments, a first gap is formed between the moisture-absorbing layer and the human body, the thickness of which is 0.3-0.5 cm; a second gap is formed between the moisture-absorbing layer and the heat-insulating and breathable layer; and a third gap is formed between the heat-insulating and breathable layer and the heat-storing layer, the thickness of which is 0.5-0.8 cm. The three gaps are interconnected based on the breathable fabric, forming a closed-loop circulation path of "moisture absorption - heat insulation and breathability - heat retention".

[0009] In some embodiments, a control channel is provided on the breathable fabric at each control unit; Each group of control units includes multiple control units arranged vertically and interconnected; The control unit includes a loop, an elastic adjustment buckle, and a pull loop; one end of the loop is fixed to the breathable fabric on the upper part of the corresponding insulation unit, and the other end is fixedly connected to the lower part of the insulation unit. The loops of all insulation units are collected and placed in the control channel, and are threaded through the elastic adjustment buckle and connected to the pull loop.

[0010] In some embodiments, the vent area is disposed in the middle of the moisture-absorbing layer, i.e. at both ends, and the moisture-absorbing structure area is disposed between the middle and the two vent areas; The moisture-absorbing structure area covers the scapula and its surrounding area; the ventilation area covers the spine and its surrounding area, and the armpit and its surrounding area.

[0011] In some embodiments, the fabric of the moisture-wicking structural area is a modified polyester fiber moisture-wicking fabric. Optionally, the fabric of the moisture-wicking structural area is a commonly used moisture-wicking polyester fabric such as Coolmax or CoolDry.

[0012] In some embodiments, the vent area includes a plurality of vent holes, which are formed using a laser bonding process.

[0013] The laser-sealing process involves creating micropores through laser cutting, followed immediately sealing the edges with hot melt adhesive film to prevent fabric fraying and ensure smooth, non-irritating edges of the micropores. The ventilation holes help to quickly dissipate heat and moisture from the spinal area, preventing localized stuffiness.

[0014] In some embodiments, the pore diameter of the vent is 0.8-1.2 mm and the pore spacing is 1.5-2.0 cm.

[0015] In some embodiments, the insulation unit includes an outer fabric shell and an inner filling insulation material; the outer fabric shell is a high-count, high-density down-proof nylon fabric. The down-proof performance of the high-count, high-density nylon fabric is ≥4.

[0016] In some embodiments, the breathable layer is any non-elastic knitted or woven fabric with a mesh structure; the mesh opening size is 1-1.5mm, and the fabric's air permeability is ≥5000g / (m²). 2 •24h).

[0017] The breathable unit serves as a channel for the lateral flow of heat and moisture, and is exposed when the insulation unit shrinks, thus enhancing the breathability.

[0018] In some embodiments, the heat-retaining lining is made of graphene-based heat-retaining polyester fabric. The heat-retaining lining can reflect far-infrared rays emitted by the human body, enhancing heat retention; the three-proof fabric blocks the intrusion of cold air from the outside and prevents moisture from the outer layer from penetrating to the inner layer.

[0019] In some embodiments, the elastic adjustment buckle is a spring adjustment buckle.

[0020] In some embodiments, the cross-section of the cylindrical channel of the insulation unit is elliptical, with a major axis of 3-4 cm and a minor axis of 2-2.5 cm.

[0021] In some embodiments, the plurality of insulation units are symmetrically distributed on both sides of the center of the insulation and breathable layer, with 8-10 units on each side, and the spacing between each insulation unit is 2.5-3 cm. In some embodiments, the insulation material is goose down or duck down; the amount of insulation material in each insulation unit is 15-20 grams.

[0022] The columnar channel structure ensures both the fluffiness of the insulation fibers and provides longitudinal channels for the flow of heat and moisture.

[0023] In a second aspect, the present invention provides a down jacket with a back heat and moisture internal circulation system, comprising a down jacket body and a back heat and moisture internal circulation system as described in the first aspect, wherein the moisture-absorbing layer, the heat-insulating and breathable layer and the heat-storing layer are arranged sequentially from the inside to the outside on the back of the down jacket.

[0024] Thirdly, the present invention provides a method for manufacturing a down jacket with a back heat and moisture internal circulation system, comprising: Cutting the pieces used to make the main body of the down jacket, the moisture-absorbing layer, the heat-retaining layer, and multiple insulation units; Make multiple insulation units; Mark the sewing positions of the insulation units on the breathable fabric, and then fix the insulation units to the breathable fabric according to the sewing positions. Multiple control units are assembled, and the movable ends of the pull loops of the multiple control units are connected and placed in the control channel to obtain a heat-insulating and breathable layer. The moisture-absorbing layer, the heat-insulating and breathable layer, and the heat-retaining layer are sewn together with the main body of the down jacket to complete the production.

[0025] Beneficial effects:

[0026] This invention achieves a "three-layer structure + switchable structure + interconnected circulation channel" design through a moisture-absorbing layer, a heat-insulating and breathable layer, and a heat-storing layer, thus realizing the following beneficial effects: 1. Resolving the contradiction between heat preservation and breathability: By switching between contracted and expanded states through the control unit, combined with the heat and moisture conduction of the circulation channel, static heat preservation can be achieved in low-temperature environments, while heat and moisture can be quickly dissipated in high-temperature / active states to keep the internal environment of the back skin dry; 2. Adaptable to multiple scenarios: No external power supply is required. The mechanical structure can switch between different scenarios such as low temperature static placement and outdoor activities, making it suitable for long-term wear. 3. Precisely matched to human physiological characteristics: The moisture-wicking layer is designed to cover the areas on the back that are prone to sweating (scapula) and those that are prone to heat dissipation (center of back), improving adjustment efficiency and wearing comfort; 4. Stable and durable structure: Each part adopts mature textile fabrics and processes, and the mechanical adjustment method of the control unit is highly reliable. It can still maintain its functional integrity after multiple washes, meeting the durability requirements of outdoor products.

[0027] In summary, this invention achieves dynamic circulation regulation of heat and humidity in the back area without sacrificing basic warmth retention performance, balancing comfort and scene adaptability. Compared with traditional down jackets and electrically heated down jackets, it has significant technical advantages and practical value; it is suitable for various scenarios such as outdoor and daily use, and its manufacturing process is adapted to industrial production, making it highly practical. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the heat and moisture circulation system on the back of a down jacket in an embodiment of the present invention.

[0030] Figure 2 This is a three-dimensional structural diagram of the heat and moisture internal circulation system on the back of a down jacket in an embodiment of the present invention.

[0031] Figure 3 This is a schematic diagram of the thermal insulation unit in its unfolded state in an embodiment of the present invention.

[0032] Figure 4 This is a schematic diagram of the thermal insulation unit in its contracted state in an embodiment of the present invention.

[0033] Figure 5 This is a schematic diagram of the control unit in an embodiment of the present invention.

[0034] Figure 6 This is a schematic diagram of the overall structure of the down jacket in the unfolded state of the insulation unit in an embodiment of the present invention.

[0035] Figure 7 This is a schematic diagram of the overall structure of the down jacket in the contracted state of the insulation unit in an embodiment of the present invention.

[0036] Figure 8 This is a schematic diagram of the moisture-absorbing layer in an embodiment of the present invention.

[0037] Figure 9This is a schematic diagram of the structure of the thermal insulation and breathable layer in the unfolded state in an embodiment of the present invention.

[0038] Figure 10 This is a schematic diagram of the structure of the thermal insulation and breathable layer under contraction state in an embodiment of the present invention.

[0039] Figure 11 This is a schematic diagram of the heat storage layer in an embodiment of the present invention.

[0040] In the diagram: 1. Down jacket body; 11. Back panel; 12. Front panel; 111. Moisture-absorbing layer; 112. Insulating and breathable layer; 113. Heat-retaining layer; 112a. Insulating unit; 112b. Breathable unit; 112c. Control unit; 112d. Loop; 112e. Spring adjustment buckle; 112f. Pull loop; 2. Down jacket back heat and moisture internal circulation system; 21. Heat and moisture internal circulation channel; 211. First gap; 212. Second gap; 213. Third gap. Detailed Implementation

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use.

[0042] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may include different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0043] Example 1:

[0044] This embodiment discloses a heat and moisture internal circulation system 2 for the back of a down jacket, such as... Figures 1 to 4 , Figure 11As shown, it includes a moisture-absorbing layer 111, a heat-insulating and breathable layer 112, and a heat-storing layer 113. The moisture-absorbing layer 111 includes a moisture-absorbing structural area 111b and a breathable pore area 111a. The heat-insulating and breathable layer 112 includes a breathable fabric 112b, multiple heat-insulating units 112a, and multiple control units 112c. The heat-insulating unit 112a is a soft cylindrical channel structure filled with heat-insulating material, and multiple heat-insulating units 112a are arranged vertically on the breathable fabric 112b. The control unit 112c is used to control the heat-insulating unit 112a to either contract to a shrinkage state or expand to an unfolded state. When the heat-insulating unit 112a is in a shrinkage state, a breathable unit 112g is formed between the moisture-absorbing layer 111 and the heat-storing layer 113 at the heat-insulating and breathable layer 112.

[0045] The moisture-absorbing layer 111, the heat-insulating and breathable layer 112, and the heat-storing layer 113 form a heat and moisture internal circulation channel 21 between themselves and the human body: the moisture-absorbing layer 111 directly forms a first gap 211 with the human body, the moisture-absorbing layer 111 forms a second gap 212 with the heat-insulating and breathable layer 112, and the heat-storing layer 112 forms a third gap 213 with the heat-storing layer 113.

[0046] The moisture-absorbing structure zone 111b is made of Coolmax® four-groove polyester fabric. The breathable layer fabric 112b is any non-elastic knitted or woven fabric with a mesh structure. The insulation unit 112a includes an outer fabric shell and an inner filling of insulation material; the outer fabric shell is made of high-count, high-density down-proof nylon fabric. The heat-retaining layer 113 includes a heat-retaining lining and a three-proof fabric.

[0047] The cross-section of the cylindrical channel of the insulation unit 112a is elliptical, with a major axis of 3-4 cm and a minor axis of 2-2.5 cm.

[0048] The insulation material is goose down or duck down; the amount of insulation material in each insulation unit 112a is 15-20 grams.

[0049] like Figures 3 to 5 , Figure 9 and Figure 10 As shown, each group of control units 112c has a control channel 112h on the breathable fabric. Each group of control units 112c includes multiple vertically arranged and interconnected control units 112c. Each control unit 112c includes a loop 112d, a spring adjusting buckle 112e, and a pull loop 112f. One end of the loop 112d is fixed to the breathable fabric 112b on the upper part of the corresponding insulation unit 112a, and the other end is fixedly connected to the lower part of the insulation unit 112a. The loops 112d of all insulation units 112a are collected and placed in the control channel 112h, pass through the spring adjusting buckle 112e, and are connected to the pull loop 112f.

[0050] like Figure 1 , Figures 6 to 8 As shown, the breathable perforation area 111a is located in the middle of the moisture-absorbing layer 111, and the moisture-absorbing structural area 111b is located on both sides of the breathable perforation area 111a; the moisture-absorbing structural area 111b covers the scapula and surrounding area of ​​the human body; the breathable perforation area 111a covers the spine and surrounding area of ​​the human body. The fabric of the moisture-absorbing structural area 111b is a modified polyester fiber moisture-wicking fabric.

[0051] like Figure 1 and Figure 2 As shown, the vent area 111a includes multiple vent holes, which are made using a laser bonding process; the vent hole diameter is 0.8-1.2 mm, and the hole spacing is 1.5-2.0 cm.

[0052] Working principle: When the human back generates little heat and needs to be kept warm, the control unit 112c is loosened by the pull loop 112f, the heat preservation unit 112a becomes fluffy, the internal heat and moisture circulation channel 21 narrows, the moisture-absorbing layer 111 absorbs a small amount of sweat and temporarily stores it in the first gap 211, and the heat storage layer 113 reflects heat to achieve efficient heat preservation; when the human back sweats and needs to dissipate heat and moisture, the pull loop 112f is tightened to shrink the heat preservation unit, the breathable unit 112b is exposed, the channel widens, the sweat enters the moisture-absorbing layer 111 through the first gap 211, is guided along the second gap 212 to diffuse laterally in the switchable heat preservation and heat storage layer 112, and then is discharged to the inside of the heat storage layer 113 through the third gap 213 and reflected back into circulation, accelerating heat and moisture exchange and achieving heat and moisture balance.

[0053] The pull loop 112f is linked to the spring adjusting buckle 112e. Pressing the spring adjusting buckle 112e and pulling the pull loop 112f can tighten / loosen the control loop 112d, thereby switching the state of the insulation unit. Insulation mode: When the pull tab 112f is released, the down in the insulation unit 112a becomes naturally fluffy, the volume of the filling cavity expands to the maximum, the heat and humidity internal circulation channel 21 narrows, the air flow speed in the internal environment decreases, and heat loss is reduced. Heat and moisture removal mode: Tighten the pull tab 112f, compress the heat insulation unit 112a to a tight state, fully expose the breathable unit 112g, widen the heat and moisture internal circulation channel 21, increase the air flow speed of the internal environment, and quickly circulate the sweat and heat removed by the moisture-absorbing layer through the channel to achieve heat and moisture balance.

[0054] Example 2:

[0055] This embodiment provides a down jacket based on embodiment one, including a down jacket body 1 and a down jacket back heat and moisture internal circulation system 2 provided in embodiment one. The moisture-absorbing layer 111, the heat-insulating and breathable layer 112 and the heat-storing layer 113 are arranged sequentially from the inside to the outside on the back of the down jacket.

[0056] like Figure 1 As shown, the heat and moisture circulation system 2 of the back of the down jacket is integrated into the inner side of the back piece 11 of the down jacket body 1, and the moisture-absorbing layer 111 serves as the back piece 11.

[0057] Example 3:

[0058] This embodiment provides a method for manufacturing a down jacket as described in Embodiment 2, including:

[0059] 1. Pattern cutting: Cut the garment pieces (front piece 12, back piece 11, sleeves, etc.) of the down jacket body 1. The back piece 11 is reserved with an installation area for the back heat and moisture internal circulation system 2. Cut pieces of moisture-absorbing layer 111, switchable heat-insulating and breathable layer 112, and heat-storing layer 113. Among them, the moisture-absorbing layer 111 needs to be pre-cut with vent holes 111a and laser-sealed edges. Cut the outer fabric shell of the insulation unit 112a (the pattern in the unfolded state of the cylindrical channel) and the thread loop 112d and pull loop 112g of the control unit 112c.

[0060] 2. Fabrication of Insulation Unit 112a: The outer fabric panels are sewn together to form a cylindrical cavity with openings at both ends. Down (90% white duck down / 95% white goose down) is then filled through the openings and the openings are sewn up after filling. Control loops 112d are sewn at both ends of the insulation unit 112a, with a loop length of 5-8cm reserved for adjusting shrinkage.

[0061] 3. Positioning and fixing of the insulation unit: On the fabric surface of the breathable unit 112b of the switchable thermal insulation and breathable layer 112, mark the installation positions of the thermal insulation unit 112a along both sides of the spine (symmetrically distributed, with a spacing of 2.5-3cm). The insulation unit 112a is fixed to the marked position by a combination of dotted adhesive and needle and thread reinforcement. The adhesive dots are spaced 2-3cm apart to ensure a firm fixation without damaging the mesh structure of the breathable unit.

[0062] 4. Control unit assembly and connection: The spring adjustment buckle 112e is sewn to the preset positions on both sides of the lower hem of the back garment piece 11; All control wire loops 112d of the insulation units 112a are gathered and threaded into the adjustment hole of the spring adjustment buckle 112e, and the end is connected to the pull loop 112f; Test the flexibility of the control unit: When the pull loop 112f is pulled, the insulation unit should contract evenly and rebound naturally after being released, ensuring smooth state switching.

[0063] 5. Channel seam stitching and layered composite: The switchable heat-insulating and breathable layer 112 is sewn together with the moisture-absorbing layer 111 and the heat-storing layer 113, with the thickness of the first gap 211 and the third gap 213 reserved. The dividing line between the sewn insulation units 112a forms a transverse channel for the second gap 212, ensuring that the three gaps are interconnected.

[0064] 6. Overall suturing: The back piece 11, which incorporates the back heat and moisture circulation system 2, is sewn together with the front piece 12, sleeves, and other components of the down jacket body 1. The down filling material (which is the same as the insulation filling material) is used to fill the main body of the down jacket. The collar, cuffs, hem, and other parts are then sewn together to complete the overall production.

[0065] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "up," "down," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to explain the relative positional relationship and movement between components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. These terms are used only for the convenience of describing the invention and for simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention.

[0066] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0067] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0068] 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 technical principles 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 heat and moisture internal circulation system for the back of a down jacket, characterized in that, It includes a moisture-absorbing layer, a heat-insulating and breathable layer, and a heat-storing layer. The moisture-absorbing layer forms a first gap with the human body, the moisture-absorbing layer forms a second gap with the heat-insulating and breathable layer, and the heat-storing layer forms a third gap. The moisture-absorbing layer includes a moisture-absorbing structural area and a breathable pore area; The heat-insulating and breathable layer includes a breathable fabric, multiple heat-insulating units, and multiple control units; the heat-insulating unit is a soft cylindrical channel structure filled with heat-insulating material, and multiple heat-insulating units are arranged vertically on the breathable fabric; the control unit is used to control the heat-insulating units to either contract to a shrinking state or expand to an unfolding state. When the insulation unit is in a contracted state, a breathable unit is formed between the moisture-absorbing layer and the heat-storing layer at the insulation and breathable layer. The heat storage layer includes a heat storage lining and a three-proof fabric.

2. The down jacket back heat and moisture internal circulation system according to claim 1, characterized in that, Each control unit has a control channel provided on its breathable fabric layer. Each group of control units includes multiple control units arranged vertically and interconnected; The control unit includes a loop, an elastic adjustment buckle, and a pull loop; one end of the loop is fixed to the breathable fabric on the upper part of the corresponding insulation unit, and the other end is fixedly connected to the lower part of the insulation unit. The loops of all insulation units are collected and placed in the control channel, and are threaded through the elastic adjustment buckle and connected to the pull loop.

3. The down jacket back heat and moisture internal circulation system according to claim 1, characterized in that, The ventilated area is located in the middle of the moisture-absorbing layer, i.e. at both ends, and the moisture-absorbing structure area is located between the middle and the two ventilated areas; The moisture-absorbing structure area covers the scapula and its surrounding area; the ventilation area covers the spine and its surrounding area, and the armpit and its surrounding area.

4. The down jacket back heat and moisture internal circulation system according to claim 1, characterized in that, The fabric of the moisture-absorbing structure area is a modified polyester fiber moisture-wicking fabric; the heat-retaining lining is made of graphene heat-retaining polyester fabric. The ventilation area includes multiple ventilation holes, which are made using a laser bonding process; the diameter of the ventilation holes is 0.8-1.2 mm, and the spacing between the holes is 1.5-2.0 cm.

5. The down jacket back heat and moisture internal circulation system according to claim 1, characterized in that, The thickness of the first gap is 0.3-0.5 cm, and the thickness of the third gap is 0.5-0.8 cm.

6. The down jacket back heat and moisture internal circulation system according to claim 1 or 2, characterized in that, The insulation unit includes an outer fabric shell and an inner insulation material; the outer fabric shell is a high-count, high-density down-proof nylon fabric. The breathable layer fabric is a non-elastic knitted or woven fabric with a mesh structure; the mesh opening size is 1-1.5mm, and the fabric's air permeability is ≥5000g / (m²). 2 •24h).

7. The down jacket back heat and moisture internal circulation system according to claim 1, 2, or 3, characterized in that, The cross-section of the cylindrical channel of the insulation unit is elliptical, with a major axis of 3-4 cm and a minor axis of 2-2.5 cm. The multiple insulation units are symmetrically distributed on both sides of the center of the insulation and breathable layer, with 8-10 units on each side and a spacing of 2.5-3 cm between each insulation unit.

8. The down jacket back heat and moisture internal circulation system according to claim 1, characterized in that, The insulation material is goose down or duck down; the amount of insulation material in each insulation unit is 15-20 grams.

9. A down jacket with a back heat and moisture internal circulation system, characterized in that, The garment includes a down jacket body and a back heat and moisture circulation system as described in any one of claims 1-8, wherein the moisture-absorbing layer, the heat-insulating and breathable layer, and the heat-storing layer are arranged sequentially from the inside to the outside on the back of the down jacket.

10. A method for manufacturing a down jacket with a back heat and moisture internal circulation system, characterized in that, include: Cutting the pieces used to make the main body of the down jacket, the moisture-absorbing layer, the heat-retaining layer, and multiple insulation units; Make multiple insulation units and fill them with insulation material; Mark the sewing positions of the insulation units on the breathable fabric, and then fix the insulation units to the breathable fabric according to the sewing positions. Multiple control units are assembled, and the movable ends of the pull loops of the multiple control units are connected and placed in the control channel to obtain a heat-insulating and breathable layer. The moisture-absorbing layer, the heat-insulating and breathable layer, and the heat-retaining layer are sewn together with the main body of the down jacket to complete the production.

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