A down-proof fabric panel and its application in down garments

Abstract

This invention relates to a down-proof fabric panel and its application in down jackets. The panel comprises several strip-shaped panels, interconnected at their sides. Each strip is formed by sewing two layers of fabric strips together, with three sides sewn together and one end leaving a down filling opening. The three sides of each fabric strip are folded inwards to form a hem, and a connecting edge is sandwiched between two hems before being secured with a first quilting stitch. This fabric panel prevents down leakage by folding and sewing the three sides inwards and adding an inner layer at the seam. A connecting edge is provided within the hem to secure the panel to the down jacket fabric. When the down jacket fabric is stretched, needle holes are formed on the connecting edge, preventing down leakage. Furthermore, an outer edge is added to the down filling opening to prevent leakage at the filling opening, significantly improving the down-proof performance of the fabric panel.

Description

Technical Field

[0001] This invention belongs to the field of down jacket technology, specifically relating to a down-proof cut piece and its application in down jackets. Background Technology

[0002] Down jackets are one of the essential winter garments for keeping warm. They use down to trap air and reduce heat loss. Down jackets need several sections between the outer fabric and the lining to lock in the down. Common methods of separation include quilting or using a panel to form a lining, which is then sewn to the outer fabric and lining. Regardless of the sewing method, pinholes are prone to form at the quilting. These pinholes can easily enlarge when the down jacket is pulled or tugged, causing down to leak out. Summary of the Invention

[0003] The purpose of this invention is to provide a down-proof fabric piece and its application in down jackets in order to solve the above-mentioned problems.

[0004] The present invention achieves the above objectives through the following technical solutions:

[0005] A down-proof fabric panel includes several strip-shaped panels with their sides connected to each other. Each strip-shaped panel is made of two layers of fabric strips sewn together, with three sides sewn together and one end leaving a down filling opening. The three sides of each fabric strip are folded inward to form a hem. A connecting edge is sandwiched between two hems and then sewn together with a first quilting thread. An inner covering layer covering the first quilting thread is provided on the surface of the hem. The inner covering layer is bonded to the fabric strip with a first adhesive strip. The connecting edges of two adjacent strip-shaped panels overlap each other and are fixed together with a second quilting thread.

[0006] The filling port is provided with an outer covering layer. After the filling port is filled with down, it is fixed by sewing with a third quilting thread. The outer covering layer is U-shaped and covers the outside of the filling port, and is glued and fixed by a second adhesive strip.

[0007] As a further optimization of the present invention, the inner layer has a U-shaped cross section, with the two sides bonded to the inner side of the folded edge by the first adhesive strip, and the middle is a free section. By setting the free section, when the inner layer and the strip-shaped cut piece are subjected to tensile force, the tension between the upper and lower strips is borne by the first quilting thread, and the free section can keep the first adhesive strip from being pulled, reducing the possibility of it delaminating.

[0008] As a further optimization of the present invention, the first quilting thread is at least two layers, which are interlaced with each other. By setting multiple quilting threads, the fabric strips are firmly fixed together to prevent them from being pulled apart. At the same time, the strength of the connecting edge and the folded edge can also be strengthened.

[0009] To apply the aforementioned down-proof fabric strips, this invention also proposes a down jacket, comprising a down jacket fabric and down strips. The down strips are formed by sewing strips of varying lengths together in parallel. The down jacket fabric is fixed to the connecting edge by a second quilting thread. In this solution, to apply the down strips to the down jacket, the down strips need to be sewn to the down jacket fabric, but needle holes cannot be made in the fabric strips. Therefore, the fixed position of the down jacket fabric and the down strips is located at the connecting edge, and the down jacket fabric is sewn together with the down jacket fabric when the connecting edge is sewn with the second quilting thread.

[0010] As a further optimization of the present invention, a fourth quilting thread is provided at the outermost end of the fabric strip near the down filling port. The fourth quilting thread penetrates the outer covering layer and is used to sew and fix it to the down jacket. A pleat is provided between the second adhesive strip of the outer covering layer and the fourth quilting thread as a free section. The fourth quilting thread is provided to sew and fix the down filling port of the strip-shaped cut piece to the down jacket fabric. Furthermore, the pleat provided between the second adhesive strip and the fourth quilting thread can reduce the formation of pinholes in the fourth quilting thread at the outer covering layer, thereby reducing the possibility of down leakage.

[0011] As a further optimization of the present invention, the gap between the outer layer and the fabric strip is provided with an elastic flexible filler, which is one or more of sponge, cotton, and space cotton. Since pinholes are still easily formed at the third and fourth quilting threads, causing down leakage, a flexible filler is provided between the outer layer and the fabric strip to further delay down leakage in order to reduce down leakage.

[0012] The beneficial effects of this invention are as follows:

[0013] This invention folds and sews three sides of the cut piece inwards, and sets an inner layer at the seam to prevent down leakage. A connecting edge is set inside the folded edge to sew and fix the cut piece to the down jacket fabric. When the down jacket fabric is stretched, the needle hole is formed on the connecting edge, which will not cause down leakage. Furthermore, an outer edge is set at the down filling port of the cut piece to prevent down leakage at the filling port, which greatly improves the down leakage prevention effect of the cut piece. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the strip-shaped piece of the present invention;

[0015] Figure 2 This is the invention Figure 1 Sectional view along line AA;

[0016] Figure 3 This is the invention Figure 1 Sectional view along the BB direction;

[0017] Figure 4 This is the invention Figure 2 Enlarged view of the structure of section C;

[0018] Figure 5 This is a schematic diagram of the sewing of the down jacket fabric and the strip cut piece according to the present invention;

[0019] Figure 6 This is the invention Figure 5 Enlarged view of the structure of section D in the middle;

[0020] In the diagram: 1. Strip cut piece; 101. Fabric strip; 102. Folded edge; 103. Down filling opening; 2. Connecting edge; 3. First quilting seam; 4. Inner layer; 401. First adhesive strip; 5. Second quilting seam; 6. Outer layer; 601. Second adhesive strip; 602. Flexible filling material; 603. Pleats; 7. Third quilting seam; 8. Fourth quilting seam; 9. Down jacket fabric. Detailed Implementation

[0021] 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.

[0022] Example 1

[0023] like Figure 1-6 As shown, a down-proof fabric panel includes several strip-shaped panels 1. The sides of the strip-shaped panels 1 are connected to each other. The strip-shaped panels 1 are made of two layers of fabric strips 101 sewn together, with three sides sewn together and one end leaving a down filling opening 103. The three sides of the fabric strips 101 are folded inward to form folded edges 102. A connecting edge 2 is sandwiched between two folded edges 102 and then sewn and fixed by a first quilting thread 3. An inner covering layer 4 covering the first quilting thread 3 is provided on the surface of the folded edge 102. The inner covering layer 4 is bonded to the fabric strips 101 by a first adhesive strip 401. The connecting edges 2 of two adjacent strip-shaped panels 1 overlap each other and are fixed to each other by a second quilting thread 5.

[0024] The inner layer 4 has a U-shaped cross-section. Both sides are bonded to the inner side of the folded edge 102 via the first adhesive strip 401, and the middle is a free section. By setting the free section, when the inner layer 4 and the strip-shaped cut piece are subjected to tensile force, the tension between the upper and lower strips 101 is borne by the first quilting thread 3. The free section can keep the first adhesive strip 401 from being pulled, reducing the possibility of it delaminating. Although the first quilting thread 3 may form pinholes, it will not cause leakage of down due to the obstruction of the inner layer 4. There are at least two first quilting threads 3, which are interlaced with each other. By setting multiple quilting threads, the strips 101 are firmly fixed together, preventing them from being pulled off. At the same time, it can also strengthen the firmness of the connecting edge 2 and the folded edge 102.

[0025] Due to production factors, the edges 102 of the strip-shaped cut piece 1 cannot be folded inwards and sewn on all four sides. Therefore, an outward folding and sewing is provided at the filling port 103. In order to reduce the possibility of leakage at this location, the filling port 103 is provided with an outer layer 6. After filling, the filling port 103 is sewn and fixed by the third quilting thread 7. The outer layer 6 is U-shaped and covers the outside of the filling port 103, and is glued and fixed by the second adhesive strip 601.

[0026] To apply the aforementioned down-proof fabric piece, this invention also proposes a down jacket, which includes a down jacket fabric 9 and down fabric pieces. The down fabric pieces are formed by stitching together strips 1 of varying lengths. The down jacket fabric 9 is sewn to the connecting edge 2 via a second quilting thread 5. Since the three sides of the strips 1 are sewn to the down jacket fabric 9 via the connecting edge 2, a good fixing effect is achieved. Therefore, the fact that the filling opening 103 is not sewn to the down jacket fabric 9 has little impact on the strength. Furthermore, not sewing the filling opening 103 to the down jacket fabric 9 can prevent the formation of pinholes that cause down leakage.

[0027] Example 2

[0028] Unlike Example 1, Example 2, in order to improve the stitching strength between the down-filled cut piece and the down jacket fabric 9, also stitches the down filling opening 103 to the down jacket fabric 9. To prevent down leakage caused by the stitching penetrating the fabric strip 101, a fourth quilting thread 8 is provided at the outermost end of the fabric strip 101 near the down filling opening 103. The fourth quilting thread 8 penetrates the outer covering layer 6 and is used to stitch and fix it to the down jacket. A pleat 603 is provided between the second adhesive strip 601 of the outer covering layer 6 and the fourth quilting thread 8 as a free section. The pleat 603 can reduce the formation of pinholes in the fourth quilting thread 8 at the outer covering layer 6, thereby reducing the possibility of down leakage.

[0029] Although sewing the filling opening 103 further improves the sewing strength, it also creates exposed pinholes at the filling opening 103. To reduce the impact of down leakage, an elastic flexible filler 602 is provided between the outer layer 6 and the fabric strip 101. The flexible filler 602 is one or more of sponge, cotton, and space cotton. Since pinholes are still easily formed at the third quilting thread 7 and the fourth quilting thread 8, causing down leakage, a flexible filler is provided between the outer layer 6 and the fabric strip 101 to delay down leakage in order to reduce the amount of down leakage.

[0030] 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 down jacket with a down-proof panel, characterized in that: The down jacket includes a down jacket fabric (9) and down cut pieces. The down cut pieces include several strip-shaped cut pieces (1). The side edges of the strip-shaped cut pieces (1) are connected to each other. The strip-shaped cut pieces (1) are made of two layers of fabric strips (101) sewn together, with three sides sewn together and one end leaving a down filling opening (103). The three sides of the fabric strips (101) are folded inward to form folded edges (102). A connecting edge (2) is sandwiched between two folded edges (102) and then sewn together by a first quilting thread (3). The surface of the folded edge (102) is provided with a covering first quilting thread. The inner layer (4) of the quilting (3) is bonded to the fabric strip (101) by a first adhesive strip (401). The connecting edges (2) of two adjacent strip-shaped pieces (1) overlap each other and are fixed to each other by a second quilting thread (5). The filling port (103) is provided with an outer layer (6). After filling, the filling port (103) is sewn and fixed by a third quilting thread (7). The outer layer (6) is U-shaped and covers the outside of the filling port (103) and is bonded and fixed by a second adhesive strip (601). The down pieces are formed by stitching together strips (1) of varying lengths, and the down jacket fabric (9) is fixed to the connecting edge (2) by stitching together the second quilting thread (5). The outermost end of the strip (101) near the filling port (103) is provided with a fourth quilting thread (8), which penetrates the outer layer (6) and is used to sew and fix it to the down jacket. A pleat (603) is provided between the second adhesive strip (601) of the outer layer (6) and the fourth quilting thread (8) as a free section. The gap between the outer layer (6) and the fabric strip (101) is provided with an elastic flexible filler (602).

2. A down jacket with a down-proof down panel according to claim 1, characterized in that: The inner cladding layer (4) has a U-shaped cross section, with the two sides bonded to the inner side of the folded edge (102) by the first adhesive strip (401), and the middle section is a free section.

3. A down jacket with a down-proof down panel according to claim 1, characterized in that: The first quilting (3) consists of at least two lines, which are interleaved with each other.

4. A down jacket with a down-proof down panel according to claim 1, characterized in that: The flexible filler (602) is one or more of sponge, cotton, and space cotton.

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