A down jacket fabric, a down jacket fabric preparation method and a down jacket

Abstract

The application provides a down jacket fabric, a down jacket fabric preparation method and a down jacket. The down jacket fabric comprises a down filling assembly, which comprises, from outside to inside, an outer down pocket layer, a connecting layer and an inner down pocket layer. The outer down pocket layer and the inner down pocket layer are respectively provided with a plurality of outer down pockets and inner down pockets along a first direction and are filled with down. The connecting layer is provided with a plurality of connecting portions along the first direction. Each connecting portion connects one outer down pocket and one inner down pocket corresponding to each other. Adjacent connecting portions are connected to the same outer down pocket and are connected to two adjacent inner down pockets. The connecting portions are provided with down blocking threads to block the outer down pockets and the inner down pockets connected thereto. The down blocking threads are located between the two down pocket layers. Cold energy is difficult to form a through non-down channel through the down blocking threads, and the inner down pockets filled with down are blocked, so that the problem that the down jacket is easy to transfer cold energy and easy to drill down at the position of the down blocking threads can be solved.

Description

Technical Field

[0001] This invention relates to the field of down jacket technology, specifically to a down jacket fabric, a method for preparing the down jacket fabric, and a down jacket. Background Technology

[0002] Down jackets are typically constructed from multiple layers of fabric to create a warm insulation structure. A typical down jacket fabric, from the outside in, includes the outer fabric, outer lining, inner lining, and lining. The outer fabric is on the outermost side, forming the garment's appearance and providing windproof and abrasion-resistant properties. The outer and inner linings are down-proof fabrics that wrap around each other, forming a down-filled compartment. The lining is on the innermost side, separating the inner lining and its stitching to prevent direct contact with the body and concealing the seams, ensuring a smooth and comfortable feel against the skin.

[0003] To prevent down from shifting and piling up inside the down compartment, it needs to be divided. The conventional method involves setting down-locking seams along a predetermined path on the outer and inner lining fabrics, dividing the down compartment between the two lining fabrics into multiple compartments arranged sequentially along the fabric direction. At the down-locking seams, the two lining fabrics are pressed together, unable to hold down, and the loft around the seam is significantly lower than in the center of the down compartment, thus creating a linear area of ​​weak insulation on the fabric. External cold air easily transfers along this weak area, causing the wearer to experience cold bridging or a localized feeling of coolness. While the lining fabric can separate the seams from direct contact with the body, it cannot eliminate the weakened insulation caused by the down being pushed out and the reduced loft at the seams. Furthermore, the needle holes of the down-locking seams penetrate the lining fabric, creating potential channels for down to escape; with prolonged wear, washing, or when the down is compressed, down leakage is likely to occur around the needle holes. Summary of the Invention

[0004] The purpose of this invention is to overcome the aforementioned defects or problems in the prior art and to provide a down jacket fabric, a method for preparing the down jacket fabric, and a down jacket. This fabric can improve the problem of down jackets easily transferring cold energy and easily leaking down at the down-locking thread position.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: In at least one embodiment, a down jacket fabric is disclosed, the down jacket fabric including a down filling assembly; the down filling assembly consists of an outer down filling layer, a connecting layer, and an inner down filling layer from the outside to the inside; the outer down filling layer and the inner down filling layer are respectively provided with a plurality of outer down fillings and inner down fillings along a first direction, and the outer down fillings and inner down fillings are filled with down; the connecting layer is provided with a plurality of connecting portions along the first direction; the connecting portions connect a corresponding outer down filling and an inner down filling; adjacent connecting portions are connected to the same outer down filling and to two adjacent inner down fillings; the connecting portions are provided with a down-locking thread to block the outer down fillings and inner down fillings connected through the connecting portions.

[0006] In the above design, the down-locking thread is located at the connection between the outer down layer and the inner down layer, rather than penetrating the surface of the down cells in either layer. The down-free seam area at the connection is adjacent to the puffed-up outer and inner down cells on both sides. When cold energy is transferred from the outside of the fabric to the body side, it is difficult to form a down-free channel running from the outside to the inside at the down-locking thread location. The cold energy must pass through at least one side of the fluffy down layer to continue to be transferred, which helps to reduce the tendency of cold energy to be transferred outward at the down-locking thread location and reduce the local cooling sensation. At the same time, the needle hole of the down-locking thread is located at the connection between the two down cell layers, not directly on the outer surface of the outer down cell layer or the inner surface of the down cell layer. When the down emerges from the down cell, it must first reach the needle hole located between the layers and then pass through the outer or inner fabric layer. Moreover, both sides of the down-locking thread are adjacent to the down cells, and the needle hole is unlikely to become a channel for the down to escape directly, which helps to improve the down leakage problem.

[0007] The applicant also discovered that in conventional down jacket fabrics, the inner lining fabric has a down-locking seam on the side that touches the skin. The fabric at the seam is raised, which can cause discomfort and friction if it comes into direct contact with the skin. Therefore, it is necessary to add a lining fabric inside the inner lining fabric to isolate the seam, which increases the number of fabric layers and costs.

[0008] In the above design, the down filling assembly consists of an outer down filling layer, a connecting layer, and an inner down filling layer from the outside in. The down-locking thread is located on the connecting part between the outer down filling layer and the inner down filling layer. The inner down filling layer is located on the innermost side. After each inner down filling layer is filled, it bulges in the thickness direction and forms a continuous and flat close-fitting down surface. When viewed from the human body side, the down-locking thread is covered by the bulging inner down filling layer and is not exposed on the close-fitting surface. The human body directly contacts the fluffy and flat inner down filling surface rather than the down-locking thread and its seams. Therefore, there is no need to set a lining to avoid the down-locking thread pressing or rubbing against the skin, thereby reducing the number of fabric layers, which is conducive to making the fabric lighter and thinner and reducing costs.

[0009] In the down jacket fabric disclosed in at least one embodiment, preferably, it further includes a face fabric disposed on the outside of the down filling assembly.

[0010] In the above design, the outer fabric is located on the outside of the down filling component. It forms the outer surface of the down jacket and protects the outer down hopper layer, so that the fabric can maintain its complete appearance and abrasion resistance even without the lining.

[0011] In the down jacket fabric disclosed in at least one embodiment, preferably, there is a gap between adjacent outer down cells in the outer down cell layer along a first direction.

[0012] In the above design, there is a gap between adjacent outer down filling chambers along the first direction. This gap provides space for the connection and the folding transition area at the edge of the down filling chamber to accommodate and deform, so that adjacent folding transition areas are staggered along the first direction, reducing the increase in local thickness and stiffness caused by the concentrated stacking of multiple layers of materials. This reduces assembly interference between adjacent structures, maintains the predetermined stacking state of the outer down filling layer, connecting layer, and inner down filling layer, and reduces the impact of local thickness changes on the appearance of the fabric, which is beneficial to improving the structural stability, surface flatness, and processing consistency of the down filling assembly.

[0013] In the down jacket fabric disclosed in at least one embodiment, more preferably, the spacing of the gap in the first direction is 3% to 10% of the first direction dimension of the outer down hopper.

[0014] In the above design, the gap in the first direction is controlled to be 3% to 10% of the size of the outer down compartment in the first direction. This allows the gap size to change accordingly with the size of the outer down compartment, thereby providing clearance space for the connection part and the folding transition area that is adapted to the specifications of the down compartment. This reduces the increase in local thickness and rigidity caused by the overlapping and compression of adjacent folding edges. At the same time, this ratio range can limit the width of the unfilled and unsupported area between adjacent outer down compartments, so that the outer down compartment layer maintains relatively continuous support for the face fabric and maintains the continuity of down coverage. This balances the structural stability of the down filling component, the flatness of the face fabric, and the uniformity of heat preservation.

[0015] In the down jacket fabric disclosed in at least one embodiment, preferably, the outer down compartment and the inner down compartment are of equivalent size in a first direction, so that the corresponding outer down compartments and inner down compartments in the outer down compartment layer and the inner down compartment layer are staggered along the first direction.

[0016] In the above design, the outer and inner fleece compartments are of similar size and staggered along the first direction, so that the connecting part and the tuck thread located in the gap between adjacent outer fleece compartments are directly opposite the fleece-filled bulge of the inner fleece compartment in the thickness direction. On the heat transfer path from the outside to the human body side, the fleece-free seam area where the tuck thread is located is covered by at least one of the outer or inner fleece compartments, making it difficult to form a low-loft channel that runs from the outside to the inside, thereby further blocking the transfer of cold energy along the tuck thread. At the same time, the tuck thread is blocked by the staggered inner fleece compartment on the side facing the human body, further enhancing the effect of avoiding contact between the tuck thread and the skin without the need for a lining.

[0017] In the down jacket fabric disclosed in at least one embodiment, preferably, adjacent down compartments are interconnected and have a plurality of connections along the edge extension direction of the down compartments.

[0018] In the above design, adjacent down compartments are interconnected to form a continuous whole on the body side. This connection is only made at multiple connection points along the edge of the down compartment, and most of the edges between adjacent down compartments do not need to be continuously sewn. Compared with continuous sewing along the entire edge, the number of stitches on the down compartment layer is significantly reduced, and the risk points of down leakage such as pinholes are correspondingly reduced. This helps to reduce the possibility of down leaking out from the stitches of the down compartment layer. At the same time, the connections dispersed at multiple locations maintain the flatness and stability of the down compartment layer as a whole on the body side.

[0019] In the down jacket fabric disclosed in at least one embodiment, preferably, the connection between adjacent down compartments is stitched with a crisscross pattern.

[0020] In the above design, the connection is stitched with a square stitch, which forms a partially closed seam between adjacent down cells. This prevents down from moving through the connection between the down cells to the adjacent down cells, while keeping the skin-contact side of the connection flat, thus balancing down prevention and wearing comfort.

[0021] In the down jacket fabric disclosed in at least one embodiment, preferably, the outer down jacket layer, the connecting layer and the inner down jacket layer are integrally formed from the same continuous fabric; the connecting portion is integrally formed by the continuous fabric extending between the corresponding outer down jacket and inner down jacket.

[0022] In the above design, the outer fleece layer, the connecting layer, and the inner fleece layer are integrally formed from the same continuous fabric. There is no need to make each layer separately and then connect them by sewing with additional sheets. This reduces the number of stitches and fabric layers between layers, simplifies the manufacturing process, and reduces costs. The connecting part is formed by an integral extension of the continuous fabric, and the fleece thread is set on the integrally extended connecting part. The overall structure is good, and the fleece compartments are not easy to move.

[0023] In at least one embodiment, a method for preparing down jacket fabric is disclosed. The method includes: layering and aligning a first fabric and a second fabric; sewing multiple down-locking threads extending in a second direction onto the first and second fabrics along a first direction to divide the space between the first and second fabrics into multiple down-filling units arranged sequentially along the first direction, wherein the second direction is perpendicular to the first direction; filling each down-filling unit with down; folding the first and second fabrics along a preset folding line, such that each down-filling unit is stacked in the thickness direction and located on the outer and inner sides respectively, forming corresponding outer down-filling units and inner down-filling units arranged staggered along the first direction; integrally forming a connecting portion at the folding transition; each connecting portion connecting a corresponding outer down-filling unit and an inner down-filling unit; adjacent connecting portions connecting to the same outer down-filling unit and connecting to two adjacent inner down-filling units; wherein the down-locking threads are located at the connecting portions.

[0024] In the above method, the down-locking thread first separates the first and second fabrics into down-filling units in a flat state. After filling with down, it is folded along the folding line so that the folding transition forms a connecting part. The pre-stitched down-locking thread is located exactly on this connecting part, so that the outer down-filling layer, the connecting layer and the inner down-filling layer are all made from the same continuous fabric in one fold. The sequence of steps of first locking down and separating, then filling with down and then folding makes it difficult for the down in each down-filling unit to move during the forming process. Therefore, it can stably achieve the aforementioned effects of reducing cold transfer, reducing down leakage and eliminating the need for a lining.

[0025] In at least one embodiment, a down jacket is disclosed, the down jacket comprising the down jacket fabric described in any of the preceding embodiments.

[0026] In the above design, the down jacket uses the aforementioned down jacket fabric, which is not easy to transfer cold energy or allow down to escape at the down-locking yarn position. Furthermore, the down-locking yarn does not need to be liningd to avoid contact with the human body, which helps to achieve a lightweight design while maintaining warmth. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments are briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a cross-sectional schematic diagram of the down jacket fabric involved in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the down filling component in the down jacket fabric according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the flattened state of the down filling component in the down jacket fabric according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the folded state of the down filling component in the down jacket fabric according to an embodiment of the present invention.

[0029] Explanation of key figure labels: Down filling assembly 100; first fabric 101; second fabric 102; outer down filling layer 110; outer down filling 111; connecting layer 120; connecting part 121; inner down filling layer 130; inner down filling 131; inner down filling connection 132; gap 140; 200 pieces of face cloth; First fold line 301; second fold line 302; twill line 303. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0032] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is 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, and therefore should not be construed as limiting the specific scope of protection of this invention.

[0033] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0034] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0035] Example like Figures 1 to 4 As shown, this embodiment provides a down jacket fabric, which includes a down filling assembly 100. The down filling assembly 100 forms the insulating body of the down jacket fabric, and it sequentially forms an outer down layer 110, a connecting layer 120, and an inner down layer 130 from the outside to the inside. In an embodiment where a face fabric 200 is provided, the face fabric 200 is located outside the down filling assembly 100, and is used to form the outer surface of the down jacket and to cover and protect the down filling assembly 100.

[0036] To facilitate explanation of the positional relationships of the structures in this embodiment, the following directions are defined. The thickness direction refers to the direction of the down jacket fabric from the outside to the inside and from the inside to the outside. The outside is the side of the down jacket that faces away from the body when worn, and the inside is the side that faces the body when worn. Therefore, in this embodiment, the inside and outside directions are consistent with the thickness direction of the down jacket fabric, and the outer fabric 200 and the down filling assembly 100 are layered sequentially along this thickness direction. The first direction is perpendicular to the thickness direction. Figure 1 In the orientation shown, the first direction is the vertical direction extending from top to bottom in the diagram, along which the outer fleece compartment 111 and the inner fleece compartment 131 are arranged. The second direction is perpendicular to both the thickness direction and the first direction. Figure 2 In the directions shown, the second direction is the edge extension direction of the inner down compartment 131, and also the extension direction of the down-locking thread 303. Both the first and second directions extend inward along the fabric of the down jacket.

[0037] It should be noted that, in this embodiment, the edge of the inner pleated compartment 131 refers to the edge formed by the second fold line 302, which extends along the second direction. A connection point is provided between adjacent inner pleated compartments 131 along this edge, that is, along the extension direction of the second fold line 302. Therefore, the extension direction of the edge of the inner pleated compartment 131 is consistent with the second direction. In the following text, the edge of the inner pleated compartment 131 refers to the edge formed by the second fold line 302 and extending along the second direction.

[0038] The down filling assembly 100 is formed by stacking a first fabric 101 and a second fabric 102. A space for accommodating down is provided between the first fabric 101 and the second fabric 102. The opposing side surfaces of the first fabric 101 and the second fabric 102 in their stacked state respectively form the two side surfaces of the down filling assembly 100 along the thickness direction: in the embodiment where the face fabric 200 is provided, the first fabric 101 is located on one side of the face fabric 200, i.e., the outer side, and the second fabric 102 is located on the side facing the human body, i.e., the inner side. The first fabric 101 and the second fabric 102 extend continuously along a first direction in their unfolded state, and the space between them is divided into multiple down-filled units arranged sequentially along the first direction by multiple down-locking threads 303, each down-filled unit being filled with down. After filling, each down-filled unit bulges outwards and inwards, giving the down filling assembly 100 a certain lofty thickness in the thickness direction.

[0039] Combination Figure 3 and Figure 4As shown, in the planar unfolded state of the down filling assembly 100, the first fold line 301, the second fold line 302, and the down-locking line 303 all extend along the second direction and are arranged at intervals along the first direction. The first fold line 301 forms the fold boundary line between the outer down filling chamber 111 and the connecting portion 121, the second fold line 302 forms the fold boundary line between the inner down filling chamber 131 and the connecting portion 121, and the down-locking line 303 is located between the first fold line 301 and the second fold line 302. For ease of explanation, in this embodiment, the double-layer fabric area between the first fold line 301 and the second fold line 302 is referred to as the fold transition area. This area forms the connecting portion 121 after folding, and the down-locking line 303 is located on the connecting portion 121 along with this area.

[0040] After the first fabric 101 and the second fabric 102 are filled with down, they are folded along the first fold line 301 and the second fold line 302, respectively, so that the down storage units originally arranged sequentially along the first direction are stacked in the thickness direction. The down storage units located on the outer side form outer down storage units 111, and multiple outer down storage units 111 are arranged along the first direction to form an outer down storage layer 110; the down storage units located on the inner side form inner down storage units 131, and multiple inner down storage units 131 are arranged along the first direction to form an inner down storage layer 130. The folding transition area is located between the outer down storage layer 110 and the inner down storage layer 130, thus forming a connecting layer 120. It should be understood that "outer side" and "inner side" refer to the relative positions of each down storage unit in the thickness direction after folding; the overall structure after folding maintains the state of the first fabric 101 and the second fabric 102 facing each other at any cross-section.

[0041] The connecting layer 120 includes a plurality of connecting portions 121 spaced apart along a first direction. Each connecting portion 121 connects an outer pleated pocket 111 and a corresponding inner pleated pocket 131. Viewed along the first direction, the two opposite ends of the same outer pleated pocket 111 are respectively connected to two adjacent inner pleated pockets 131 through two adjacent connecting portions 121. Thus, two adjacent connecting portions 121 are connected to the same outer pleated pocket 111 and respectively connected to two adjacent inner pleated pockets 131, so that the outer pleated pockets 111, connecting portions 121 and inner pleated pockets 131 form a continuous folded three-dimensional structure in the thickness direction. That is, adjacent outer pleated pockets 111 are connected to adjacent inner pleated pockets 131 through a common connecting portion 121 and then respectively through adjacent connecting portions 121, thereby forming a loop-like structure in which the outer pleated pockets 111, connecting portions 121 and inner pleated pockets 131 are alternately connected along the first direction and alternately stacked in the thickness direction.

[0042] The connecting part 121 is formed by a continuous double-layer fabric of the first fabric 101 and the second fabric 102 extending integrally between the outer pile 111 and the inner pile 131. The outer pile layer 110, the connecting layer 120 and the inner pile layer 130 are formed by folding the same continuous fabric, so that the outer pile 111, the connecting part 121 and the inner pile 131 maintain a continuous fabric connection relationship. It is not necessary to make each layer separately and then sew them together, which reduces the number of interlayer seams and fabric layers, and makes it less likely for the piles to shift.

[0043] A down-locking thread 303 is disposed on the connecting portion 121 and located between the first fold line 301 and the second fold line 302. The down-locking thread 303 sews the first fabric 101 and the second fabric 102 together, thereby blocking the outer down compartment 111 and the inner down compartment 131 connected by the corresponding connecting portion 121, and restricting the movement of down between the outer down compartment 111 and the inner down compartment 131. Specifically, the connecting portion 121 serves as a bridging area between the outer down compartment 111 and the inner down compartment 131. Originally, there was a narrow space between the two layers of fabric that allowed down to pass through. The down-locking thread 303 presses the two layers of fabric together and tightly along the second direction at this bridging area, forming a compressed area through which no down can pass, thereby blocking the channel between the outer down compartment 111 and the inner down compartment 131. Since the tuck thread 303 is located between the outer down filling layer 110 and the inner down filling layer 130 and brings the fabric together, the area where the tuck thread 303 is located is not directly exposed to the outer or inner surface of the down filling assembly 100 in the thickness direction, and both sides of the tuck thread 303 are adjacent to the down filling cells.

[0044] The outer down chamber 111 and the inner down chamber 131 are approximately equal in size in the first direction and are staggered along the first direction. "Approximating in size" means that the outer down chamber 111 and the inner down chamber 131 have the same or similar dimensions along the first direction, allowing them to form a continuous down cover in the thickness direction while maintaining their staggered arrangement. "Staggered arrangement" means that the projections of the corresponding outer down chambers 111 and inner down chambers 131 along the thickness direction do not completely overlap; the area where the down chambers meet or the connecting portion 121 in the outer down chamber layer 110 at least partially corresponds to the filling area of ​​the inner down chamber 131. That is, the down chamber meeting point of the outer down chamber layer 110 is located at the gap 140 between the outer down chambers 111, and this location is directly opposite the down surface of the inner down chamber 131 after it has been filled and bulged in the thickness direction.

[0045] In the aforementioned misaligned structure, the connecting part 121 and its tuck thread 303 are covered by the down-filled inner down chamber 131 on the side facing the human body. The human body side comes into contact with the down-filled surface formed by the inner down chamber 131, and the tuck thread 303 is not directly located on the surface against the skin. At the same time, the down-free area where the tuck thread 303 is located is offset from the down-filled areas of the outer down chamber 111 and the inner down chamber 131 in the thickness direction, making it difficult for a continuous down-free channel to be formed between the inner and outer sides of the fabric along the tuck thread 303. When cold energy is transferred from the outer side of the fabric to the human body side, it is difficult to form a continuous down-free channel from the outside to the inside at the tuck thread 303 position. The cold energy must pass through at least one side of the fluffy down layer to continue to be transferred, thereby reducing the tendency of cold energy to be transferred outward at the tuck thread 303 position and reducing the local cooling sensation. Meanwhile, the pinhole of the down-locking thread 303 is located at the connection 121 between the two down-filling layers, and is not directly opened on the outer side of the outer down-filling layer 110 or the inner side of the inner down-filling layer 130. When the down comes out of the down-filling layer, it must first reach the pinhole located between the layers and then pass through the outer or inner fabric layer. Moreover, both sides of the down-locking thread 303 are adjacent to the down-filling layer, so the pinhole is not likely to become a channel for the down to escape directly, which helps to improve the down leakage problem.

[0046] like Figure 1 As shown, there is a gap 140 between adjacent outer down filling chambers 111 along a first direction. This gap 140 is the interval between the down filling bodies of adjacent outer down filling chambers 111 along the first direction; the fabric continuity between adjacent outer down filling chambers 111 is still maintained by the connecting layer 120 and the connecting portion 121. The gap 140 is located between the opposite ends of two adjacent outer down filling chambers 111, providing accommodation and deformation space for the connecting portion 121 and the folding transition area near the first fold line 301 and the second fold line 302. Thus, adjacent folding transition areas can avoid each other in the first direction, reducing the local thickness increase caused by the concentrated stacking of multiple layers of fabric, and keeping the outer down filling layer 110 in a relatively flat arrangement. This can reduce assembly interference between adjacent structures, maintain the predetermined stacking state of the outer down filling layer 110, the connecting layer 120 and the inner down filling layer 130, and reduce the impact of local thickness changes on the appearance of the fabric 200, which is beneficial to improving the structural stability, surface flatness and processing consistency of the down filling assembly 100.

[0047] In one specific embodiment, the spacing of the gap 140 along the first direction is 3% to 10% of the dimension of the outer fleece hopper 111 along the first direction. The spacing of the gap 140 and the dimension of the outer fleece hopper 111 in the first direction can be adjusted. Figure 1The cross-section shown is compared along the first direction. Using the aforementioned proportional relationship, the gap 140 can vary accordingly with the size of the outer down filling chamber 111. While reserving clearance space for the connecting portion 121 and the folding transition area, it limits the width of the unfilled area between adjacent outer down filling chambers 111. This allows the outer down filling layer 110 to provide relatively continuous support to the outer fabric 200 located on its outer side, maintaining the continuity of down coverage, and thus ensuring the structural stability of the down filling assembly 100, the flatness of the outer fabric 200, and the uniformity of heat insulation. In one embodiment, the size of the outer down filling chamber 111 in the first direction can be 12 cm, and correspondingly, the spacing of the gap 140 can be from 3.6 mm to 12 mm.

[0048] like Figure 2 As shown, adjacent down compartments 131 are adjacent to each other after folding. The opposite edges of adjacent down compartments 131 are formed by corresponding second fold lines 302 and extend along a second direction. Multiple spaced down compartment connection points 132 are provided along this edge to connect adjacent down compartments 131. The multiple down compartment connection points 132 only occupy part of the edge, and the rest of the edge remains unstitched, thereby reducing the number of stitches on the body side of the down compartment layer 130. Compared with continuous stitching along the entire edge, the number of stitches on the down compartment layer 130 is significantly reduced, and the risk points of down leakage such as pinholes are correspondingly reduced, which helps to reduce the possibility of down leaking out from the stitches of the down compartment layer 130. At the same time, the connections at multiple locations maintain the flatness and stability of the down compartment layer 130 as a whole on the body side.

[0049] In one specific embodiment, the inner down compartment connection 132 is stitched with a crisscross pattern. Multiple crisscross stitches are spaced apart along the extension direction of the second fold line 302 to maintain the connection between adjacent inner down compartments 131 while reducing the number of stitches, allowing multiple inner down compartments 131 to collectively form a continuous and stable inner down compartment layer 130. The crisscross pattern forms partially closed seams between adjacent inner down compartments 131, preventing down from shifting through the inner down compartment connection 132 to adjacent inner down compartments 131, while keeping the skin-contact side of the connection flat, thus balancing down leakage prevention and wearing comfort.

[0050] In one specific embodiment, both the first fabric 101 and the second fabric 102 are downproof fabrics, so that each layer of the folded down-filled component 100 has downproof performance. The first fabric 101 is located on one side of the face fabric 200, i.e., the outer side, and can be made of 100% nylon fabric, such as nylon fabric with specifications of 300T 40D×40D / 34F×34F. The first fabric 101 is sent to a calender for calendering treatment. The calendering temperature can be 170℃ to 180℃ and the pressure can be 80T, so as to flatten the fibers of the first fabric 101 without changing the width, thereby improving its softness and gap density. Then, an AC adhesive coating treatment is applied to the reverse side of the first fabric 101. An acrylic resin as the main adhesive can be used. The main adhesive is dissolved into a fluid, applicable adhesive liquid and the adhesive liquid is evenly coated on the fiber surface. The coating thickness can be 0.3mm to 0.5mm to form a continuous film to improve the downproof performance of the first fabric 101, i.e., the outer fabric. The second fabric 102 is located on the side facing the human body, i.e., the inner side, and can be made of 100% polyester fabric, such as polyester fabric with specifications of 260T66D×66D / 72F×72F, to ensure the flexibility and abrasion resistance of the second fabric 102. In embodiments where the outer fabric 200 is provided, the outer fabric 200 can be made of woven fabric.

[0051] In another specific embodiment, the first fabric 101 can be made of 100% polyester fabric, such as polyester fabric with specifications of 332T 70D×70D / 48F×48F, and the calendering temperature can be 175℃ to 185℃ and the pressure can be 85T; the thickness of the AC adhesive coating on the reverse side of the first fabric 101 can be 0.35mm to 0.55mm. The second fabric 102 can be made of 100% polyester fabric, such as polyester fabric with specifications of 300T 50D×50D / 24F×24F.

[0052] This embodiment also provides a method for preparing the above-mentioned down jacket fabric. A flat cutting pattern is made according to the size and shape of the down jacket style. A sewing path is set on the cutting pattern, which includes a down-locking thread 303 extending in a second direction, a first fold line 301, a second fold line 302, and a connecting seam for connecting adjacent down-filled compartments 131. The texture direction and size of each fabric layer are marked accordingly. The first fabric 101 and the second fabric 102 are layered and aligned, so that the edges of the first fabric 101 and the second fabric 102 correspond to each other, with the first fabric 101 on the outside and the second fabric 102 on the inside. The first fold line 301 and the second fold line 302 extending in the second direction are pre-set on the first fabric 101 and the second fabric 102, and the down-locking thread 303 is sewn between the first fold line 301 and the second fold line 302. Multiple looper threads 303 are spaced apart along a first direction to divide the space between the first fabric 101 and the second fabric 102 into multiple looper units arranged sequentially along the first direction. During sewing, the stitch spacing of the looper threads 303 can be controlled between 5mm and 6mm, the stitch length between 6mm and 8mm, and the stitch strength can be ensured to be not less than 0.2N, so that the looper threads 303 are continuous and uniform; after sewing, the integrity and distribution density of each looper thread 303 are checked.

[0053] Down is filled into each down-filled unit. A down-filling machine can be used to fill down into each down-filled unit through its opening, so that each down-filled unit has a defined boundary and down distribution in a planar state. The amount of down filling causes the down-filled unit to bulge outwards and inwards after filling, providing thickness for subsequent folding. After filling is completed, the continuous double-layer fabric formed by the first fabric 101 and the second fabric 102 is folded along the first fold line 301 and the second fold line 302, so that multiple down-filled units are stacked in the thickness direction. The down-filled unit located on the outer side forms the outer down-filled unit 111, and the down-filled unit located on the inner side forms the inner down-filled unit 131. The fabric area between the first fold line 301 and the second fold line 302, i.e., the folding transition area, forms the connecting part 121, and the pre-stitched lockstitch thread 303 is located on the connecting part 121. When folded, the outer down compartment 111, the connecting part 121, and the inner down compartment 131 are arranged in sequence and folded relative to each other, so that each down compartment unit is folded 180° relative to each other, and then adjacent down compartment units are alternately stacked in the thickness direction.

[0054] By controlling the positions of the first fold line 301, the second fold line 302, and the folding thread 303 in the first direction, the outer down filling chamber 111 and the inner down filling chamber 131 formed by folding can be staggered in the first direction, and a predetermined gap 140 is formed between adjacent outer down filling chambers 111. After folding, adjacent inner down filling chambers 131 are partially connected at the opposite edges formed by the second fold line 302, and the parts are partially sewn together using a sew-like stitch. Multiple inner down filling chamber connection points 132 are set along the second direction, thereby forming a complete down filling assembly 100. The two ends of the stitches at each inner down filling chamber connection point 132 can be located at the starting ends of the first fold line 301 and the second fold line 302, respectively, and the spacing of the stitches at the connection points can be 8mm to 10mm. Finally, check the folding and sewing quality to ensure that the stitches are even and no repairs are needed; in the embodiment of setting the face fabric 200, the face fabric 200 is laid on the outside of the down filling component 100, and the face fabric 200 and the down filling component 100 are assembled and formed according to the style structure to obtain down jacket fabric or down jacket.

[0055] This embodiment also provides a down jacket, which includes the down jacket fabric described above. The outer down filling layer 110 of the down jacket fabric faces outwards, and the inner down filling layer 130 faces the human body. The puffed-up inner down filling layer 131 covers the locking threads 303 on the connecting portion 121, preventing the locking threads 303 from directly contacting the human body; the outer down filling layer 111 and the inner down filling layer 131 are staggered and overlapped along a first direction, so that the down jacket fabric forms a continuous down filling coverage in the thickness direction.

[0056] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this invention, but does not constitute a limitation on the scope of protection of this invention. Modifications, equivalent substitutions, or other improvements to the embodiments of this invention or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this invention or the foregoing embodiments, in conjunction with common knowledge, general technical knowledge, and / or existing technology, should all be included within the scope of protection of this invention.

Claims

1. A down jacket fabric, characterized in that, Includes down filling components (100); The down filling assembly (100) consists of an outer down filling layer (110), a connecting layer (120), and an inner down filling layer (130) from the outside to the inside. The outer down storage layer (110) and the inner down storage layer (130) are respectively provided with multiple outer down storage (111) and inner down storage (131) along the first direction, and both the outer down storage (111) and the inner down storage (131) are filled with down; The connecting layer (120) is provided with a plurality of connecting portions (121) along the first direction; the connecting portions (121) connect a corresponding outer plenum (111) and an inner plenum (131); adjacent connecting portions (121) are connected to the same outer plenum (111) and to two adjacent inner plenum (131). The connecting part (121) is provided with a locking thread (303) to block the outer velvet compartment (111) and inner velvet compartment (131) connected through the connecting part (121).

2. The down jacket fabric as described in claim 1, characterized in that, It also includes a face fabric (200) disposed on the outside of the down filling assembly (100).

3. The down jacket fabric as described in claim 1 or 2, characterized in that, There is a gap (140) between adjacent outer sleeving cells (111) in the outer sleeving cell layer (110) along the first direction.

4. The down jacket fabric as described in claim 3, characterized in that, The spacing of the gap (140) in the first direction is 3% to 10% of the first direction dimension of the outer plenum (111).

5. The down jacket fabric as described in claim 1, characterized in that, The outer pleated ...

6. The down jacket fabric as described in claim 1, characterized in that, The adjacent inner lining compartments (131) are interconnected and have multiple connections along the edge extension direction of the inner lining compartments (131).

7. The down jacket fabric as described in claim 6, characterized in that, The connection between adjacent inner lining compartments (131) is stitched with a square thread.

8. The down jacket fabric as described in claim 1, characterized in that, The outer fleece layer (110), the connecting layer (120), and the inner fleece layer (130) are integrally formed from the same continuous fabric; the connecting part (121) is integrally formed by the continuous fabric extending between the corresponding outer fleece layer (111) and the inner fleece layer (131).

9. A method for preparing down jacket fabric, characterized in that, Includes the following steps: The first fabric (101) and the second fabric (102) are stacked and aligned, and multiple looper threads (303) extending in the second direction are sewn on the first fabric (101) and the second fabric (102) along the first direction to divide the space between the first fabric (101) and the second fabric (102) into multiple quilt units arranged sequentially along the first direction; the second direction is perpendicular to the first direction; Fill each of the aforementioned down storage units with down; Fold the first fabric (101) and the second fabric (102) along the preset folding line so that each of the cashmere units is stacked in the thickness direction and located on the outer and inner sides respectively, forming an outer cashmere unit (111) and an inner cashmere unit (131) that correspond to each other and are staggered along the first direction; a connecting part (121) is integrally formed at the folding transition, and each of the connecting parts (121) connects a corresponding outer cashmere unit (111) and an inner cashmere unit (131), and adjacent connecting parts (121) are connected to the same outer cashmere unit (111) and connected to two adjacent inner cashmere units (131). The twill thread (303) is located in the connecting part (121).

10. A down jacket, characterized in that, It includes down jacket fabric as described in any one of claims 1 to 8.

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