A method for sewing warm and leak-proof down jackets

Abstract

This invention relates to a method for sewing a warm and leak-proof down jacket, with the following specific steps: Step 1: Sew the outer layer, inner layer, and protective layer together using a first seam. The outer and inner layers are sewn into a bag shape with a down filling opening. Perform a first heat-pressing treatment with the first seam as the central axis to bond and fix the first heat-pressed section of the protective layer, the outer layer, and the inner layer together. Step 2: Fold the movable section of the protective layer over the first heat-pressed section of the protective layer. A collecting cavity is formed between the movable section and the first heat-pressed section of the protective layer to enclose the first seam. This invention uses the collecting cavity formed between the movable section and the first heat-pressed section of the protective layer to enclose the first seam. After sewing and heat-pressing, a sealing element is used to bond and fix the jacket to the sides of the outer and inner layers, thereby sealing the sides of the outer and inner layers and improving the down-proof effect of the down jacket.

Description

Technical Field

[0001] This invention belongs to the field of down jacket technology, specifically relating to a method for sewing a warm and leak-proof down jacket. Background Technology

[0002] Down jackets generally consist of inner and outer fabrics and down filling the inner and outer layers. Down includes down clusters and individual down filaments that detach from the base of the down clusters or feathers. Down filaments are quite fine, and when they are near the seams of the down jacket, they can easily pass through the needle holes at the seams of the inner and outer fabrics and leak out. Moreover, as the down jacket is washed more often, down filaments are more likely to detach from the down clusters, resulting in an increasing number of individual down filaments and a more serious leakage problem. To solve the above problems, we propose a method for sewing warm and leak-proof down jackets. Summary of the Invention

[0003] The purpose of this invention is to provide a method for sewing warm and leak-proof 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 method for sewing a warm and leak-proof down jacket, the specific steps of which are as follows:

[0006] Step 1: First sewing and heat pressing

[0007] Align the outer edges of the outer and inner layers and lay them flat. Then, lay protective layers on the outer surfaces of the outer and inner layers respectively. Sew the outer, inner, and protective layers together with the first seam. The outer and inner layers are sewn into a bag shape with a filling opening. Perform the first heat-pressing process with the first seam as the central axis to bond and fix the first heat-pressed section of the protective layer, the outer layer, and the inner layer together.

[0008] Step Two: Second Sewing and Heat Pressing

[0009] After step one, the movable section of the protective layer is folded over and covers the first hot-pressed section of the protective layer. A collection cavity is formed between the movable section and the first hot-pressed section of the protective layer to wrap the first seam inside. The outer layer, inner layer, movable section of the protective layer, and first hot-pressed section of the protective layer are sewn together by the second seam. A second hot-pressing process is performed with the second seam as the central axis to make the second hot-pressed section, first hot-pressed section, outer layer, and inner layer bonded and fixed together.

[0010] Step 3: Third sewing

[0011] After step two, the sealing baffle is bonded and fixed on the sides of the outer and inner layers. The movable ends of the two protective layers are stacked and covered on the outer surface of the sealing baffle. The outer and inner layers, the movable ends of the two protective layers, and the sealing baffle are sewn together by the third seam.

[0012] Step 4: Filling and Sealing

[0013] After step three, fill the jacket with down through the filling port. After filling, sew the filling port in the same way as in step one to obtain a warm and leak-proof down jacket.

[0014] As a further optimization of the present invention, in step one, the hot pressing pressure is 7-10 MPa, the hot pressing temperature is 95-110℃, and the hot pressing speed is 20-30 m / min.

[0015] As a further optimization of the present invention, in step two, the hot pressing pressure is 15-18 MPa, the hot pressing temperature is 130-150℃, and the hot pressing speed is 12-18 m / min.

[0016] As a further optimization of the present invention, in steps one, two, and three, the stitch density of the first, second, and third sutures is 9-12 stitches / cm.

[0017] As a further optimization of the present invention, in step three, the sealing baffle includes a sealing strip body, a conveying cavity opened inside the sealing strip body near the outer and inner layers, and a cavity opened inside the sealing strip body. A partition plate is left between the conveying cavity and the cavity, and a plurality of conveying holes are opened on the side wall of the conveying cavity near the outer and inner layers.

[0018] As a further optimization of the present invention, the several conveying holes are symmetrically distributed vertically along the central axis of the seam where the outer and inner layers are in contact with each other.

[0019] As a further optimization of the present invention, in step three, the method of bonding and fixing the sealing baffle on the sides of the outer and inner layers specifically involves injecting adhesive into the conveying cavity, conveying the adhesive through the conveying cavity and outputting it through the conveying hole to penetrate the sides of the outer and inner layers, pressing and shaping it by the pressing roller, and then curing it so that the sealing baffle can be bonded and fixed to the sides of the outer and inner layers by the adhesive.

[0020] As a further optimization of the present invention, the pressure of the pressing roller is -MPa.

[0021] The beneficial effects of this invention are as follows:

[0022] 1) This invention folds the movable section of the protective layer over the first hot-pressed section of the protective layer, forming a collection cavity between the movable section of the protective layer and the first hot-pressed section of the protective layer to wrap the first seam inside. After a second hot-pressing process, even if the down between the outer and inner layers escapes through the needle hole of the first seam, it will be collected in the collection cavity and will not leak out through the needle hole of the second seam, making it less likely for down to leak out and improving the down-proof effect of down jackets.

[0023] 2) This invention uses a sealing baffle to bond and fix the outer and inner layers to the sides, thereby sealing the sides of the outer and inner layers. After two heat-pressing processes, the down between the outer and inner layers is less likely to move to the sides of the outer and inner layers along the lateral movement path between the outer and inner layers. Furthermore, the sealing baffle prevents the down from leaking out through the needle holes of the third seam, thus reducing the risk of down leakage and improving the down-proof effect of the down jacket. Attached Figure Description

[0024] Figure 1 This is a front sectional view of the outer layer, inner layer, and protective layer in the flat state of Embodiments 1-2 of the present invention.

[0025] Figure 2 This is a front sectional view of the outer layer, inner layer, and protective layer after they have been sewn together according to Embodiments 1-2 of the present invention.

[0026] Figure 3 This is a schematic diagram of the sealing element of the present invention.

[0027] Figure 4 This is a front sectional view of the outer layer, inner layer, protective layer, and sealing member of Comparative Example 4 of the present invention after they have been sewn together.

[0028] In the diagram: 1. Outer layer; 2. Inner layer; 3. Protective layer; 4. First seam; 5. Second seam; 6. Sealing element; 61. Sealing strip body; 62. Conveying chamber; 63. Cavity; 64. Conveying hole; 7. Third seam. Detailed Implementation

[0029] 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.

[0030] I. Materials

[0031] The adhesive is a polyurethane adhesive, and the amount of adhesive used is 10-15 g / m³. 2 .

[0032] The outer layer 1 and inner layer 2 are both commercially available 300T spring spun fabric, and the protective layer 3 is commercially available 320T spring spun fabric.

[0033] II. Methods

[0034] To investigate the impact of the manufacturing process on the performance of down jackets, Examples 1-2, a control group, and Comparative Examples 1-3 were set up, as detailed below:

[0035] Example 1

[0036] like Figure 1-3 As shown, a method for sewing a warm and leak-proof down jacket includes the following steps:

[0037] Step 1: First sewing and heat pressing

[0038] Align the outer edges of the outer layer 1 and the inner layer 2 and lay them flat. Then, lay the protective layer 3 on the outer surfaces of the outer layer 1 and the inner layer 2 respectively. Sew the outer layer 1, the inner layer 2 and the protective layer 3 together through the first seam 4. The outer layer 1 and the inner layer 2 are sewn into a bag shape and leave a filling opening. Perform the first heat-pressing treatment with the first seam 4 as the central axis so that the first heat-pressed section of the protective layer 3, the outer layer 1 and the inner layer 2 are bonded and fixed together.

[0039] The stitch density of the first suture 4 is 12 stitches / cm;

[0040] Step Two: Second Sewing and Heat Pressing

[0041] After step one, the movable section of the protective layer 3 is folded over and covered on the first hot-pressed section of the protective layer 3. A collection cavity is formed between the movable section of the protective layer 3 and the first hot-pressed section of the protective layer 3 to wrap the first seam 4 inside. The outer layer 1, inner layer 2, movable section of the protective layer 3, and first hot-pressed section of the protective layer 3 are sewn together by the second seam 5. A second hot-pressing process is performed with the second seam 5 as the central axis to make the second hot-pressed section of the protective layer 3, the first hot-pressed section of the protective layer 3, the outer layer 1, and the inner layer 2 bonded and fixed to each other.

[0042] The stitch density of the second suture 5 is 10 stitches / cm;

[0043] Step 3: Third sewing

[0044] After step two, the sealing baffle 6 is bonded and fixed on the sides of the outer layer 1 and the inner layer 2. The movable ends of the two protective layers 3 are stacked and covered on the outer surface of the sealing baffle 6. The sides of the outer layer 1 and the inner layer 2, the movable ends of the two protective layers 3, and the sealing baffle 6 are sewn together by the third seam 7.

[0045] The sealing baffle 6 includes a sealing strip body 61, a conveying cavity 62 opened inside the sealing strip body 61 near the side of the outer layer 1 and the inner layer 2, and a cavity 63 opened inside the sealing strip body 61. A partition plate is left between the conveying cavity 62 and the cavity 63. A plurality of conveying holes 64 are opened on the side wall of the conveying cavity 62 near the outer layer 1 and the inner layer 2.

[0046] The several conveying holes 64 are symmetrically distributed vertically along the central axis of the seam where the outer layer 1 and the inner layer 2 are in contact with each other.

[0047] The method of bonding and fixing the sealing baffle 6 to the sides of the outer layer 1 and the inner layer 2 is as follows: an adhesive is injected into the inside of the conveying cavity 62, the adhesive is conveyed through the conveying cavity 62 and output through the conveying hole 64 and immersed into the sides of the outer layer 1 and the inner layer 2, pressed and shaped by the pressing roller, and then cured. The sealing baffle 6 can then be bonded and fixed to the sides of the outer layer 1 and the inner layer 2 by the adhesive.

[0048] The stitch density of the second suture 5 is 9 stitches / cm;

[0049] Step 4: Filling and Sealing

[0050] After step three, fill the jacket with down through the filling port. After filling, sew the filling port according to the method in steps one to three to obtain a warm and leak-proof down jacket.

[0051] The process parameters for Examples 1 and 2 are shown in Table 1:

[0052] Table 1

[0053]

[0054]

[0055] Comparative Example 1

[0056] In this comparative example, the difference from Example 2 lies in step two, specifically,

[0057] Step Two: Second Sewing

[0058] After step one, the movable section of the protective layer 3 is folded over and covers the first hot-pressed section of the protective layer 3. A collection cavity is formed between the movable section of the protective layer 3 and the first hot-pressed section of the protective layer 3 to wrap the first seam 4 inside. The outer layer 1, inner layer 2, movable section of the protective layer 3, and first hot-pressed section of the protective layer 3 are sewn together by the second seam 5.

[0059] The remaining steps and process parameters are consistent with those in Example 2.

[0060] Comparative Example 2

[0061] In this comparative example, the difference from Example 2 lies in step three, specifically,

[0062] Step 3: Third sewing

[0063] After step two, the movable ends of the two protective layers 3 are stacked and placed over the sides of the outer layer 1 and the inner layer 2. The sides of the outer layer 1 and the inner layer 2, as well as the movable ends of the two protective layers 3, are then sewn together by the third seam 7.

[0064] The remaining steps and process parameters are consistent with those in Example 2.

[0065] Comparative Example 3

[0066] A method for sewing a warm and leak-proof down jacket, the specific steps of which are as follows:

[0067] Step 1: First sewing and heat pressing

[0068] Align the outer edges of the outer layer 1 and the inner layer 2 and lay them flat. Then, lay the protective layer 3 on the outer surfaces of the outer layer 1 and the inner layer 2 respectively. Sew the outer layer 1, the inner layer 2 and the protective layer 3 together through the first seam 4. The outer layer 1 and the inner layer 2 are sewn into a bag shape and leave a filling opening. Perform the first heat-pressing treatment with the first seam 4 as the central axis so that the first heat-pressed section of the protective layer 3, the outer layer 1 and the inner layer 2 are bonded and fixed together.

[0069] Step Two: Second Sewing and Heat Pressing

[0070] After step one, the movable section of the protective layer 3 is folded over and covered on the first hot-pressed section of the protective layer 3. A collection cavity is formed between the movable section of the protective layer 3 and the first hot-pressed section of the protective layer 3 to wrap the first seam 4 inside. The outer layer 1, inner layer 2, movable section of the protective layer 3, and first hot-pressed section of the protective layer 3 are sewn together by the second seam 5. A second hot-pressing process is performed with the second seam 5 as the central axis to make the second hot-pressed section of the protective layer 3, the first hot-pressed section of the protective layer 3, the outer layer 1, and the inner layer 2 bonded and fixed to each other.

[0071] Step 3: Filling and sealing the edges

[0072] After step two, fill the jacket with down through the filling port. After filling, sew the filling port according to the method in steps one and two to obtain a warm and leak-proof down jacket.

[0073] Comparative Example 4

[0074] like Figure 4 As shown, a method for sewing a warm and leak-proof down jacket includes the following steps:

[0075] Step 1: First sewing and heat pressing

[0076] Align the outer edges of the outer layer 1 and the inner layer 2 and lay them flat. Then, lay the protective layer 3 on the outer surface of the outer layer 1 and the inner layer 2 respectively. Fold the protective layer 3 over the protective layer 2 to form a double protective layer 3. Sew the outer layer 1, the inner layer 2 and the double protective layer 3 together through the first seam 4. The outer layer 1 and the inner layer 2 are sewn into a bag shape and leave a filling opening. Perform the first heat pressing treatment with the first seam 4 as the central axis to make the double protective layer 3, the outer layer 1 and the inner layer 2 bond and fix each other.

[0077] Step Two: Second Sewing and Heat Pressing

[0078] After the first step, the outer layer 1, inner layer 2, and double protective layer 3 are sewn together by the second seam 5. The second hot pressing process is carried out with the second seam 5 as the central axis to make the double protective layer 3, outer layer 1, and inner layer 2 bonded and fixed together.

[0079] Step 3: Third sewing

[0080] After step two, the sealing baffle 6 is bonded and fixed on the sides of the outer layer 1 and the inner layer 2. The movable ends of the two protective layers 3 are stacked and covered on the outer surface of the sealing baffle 6. The sides of the outer layer 1 and the inner layer 2, the movable ends of the two protective layers 3, and the sealing baffle 6 are sewn together by the third seam 7.

[0081] The sealing baffle 6 includes a sealing strip body 61, a conveying cavity 62 opened inside the sealing strip body 61 near the side of the outer layer 1 and the inner layer 2, and a cavity 63 opened inside the sealing strip body 61. A partition plate is left between the conveying cavity 62 and the cavity 63. A plurality of conveying holes 64 are opened on the side wall of the conveying cavity 62 near the outer layer 1 and the inner layer 2.

[0082] The several conveying holes 64 are symmetrically distributed vertically along the central axis of the seam where the outer layer 1 and the inner layer 2 are in contact with each other.

[0083] The method of bonding and fixing the sealing baffle 6 to the sides of the outer layer 1 and the inner layer 2 is as follows: an adhesive is injected into the inside of the conveying cavity 62, the adhesive is conveyed through the conveying cavity 62 and output through the conveying hole 64 and immersed into the sides of the outer layer 1 and the inner layer 2, pressed and shaped by the pressing roller, and then cured. The sealing baffle 6 can then be bonded and fixed to the sides of the outer layer 1 and the inner layer 2 by the adhesive.

[0084] Step 4: Filling and Sealing

[0085] After step three, fill the jacket with down through the filling port. After filling, sew the filling port according to the method in steps one to three to obtain a warm and leak-proof down jacket.

[0086] Blank group

[0087] A method for sewing a warm and leak-proof down jacket, the specific steps of which are as follows:

[0088] Step 1: First sewing and heat pressing

[0089] Lay the outer edges of the outer layer 1 and the inner layer 2 flat and align them. Sew the outer layer 1 and the inner layer 2 together with the first seam 4. The outer layer 1 and the inner layer 2 are sewn into a bag shape with a filling opening. The first heat-pressing process is carried out with the first seam 4 as the central axis to make the outer layer 1 and the inner layer 2 bond and fix each other.

[0090] Step Two: Second Sewing and Heat Pressing

[0091] The outer layer 1 and the inner layer 2 are sewn together by the second seam 5, and a second heat-pressing process is carried out with the second seam 5 as the central axis to make the outer layer 1 and the inner layer 2 bonded and fixed together.

[0092] Step 3: Filling and sealing the edges

[0093] After step two, fill the jacket with down through the filling port. After filling, sew the filling port according to the method in steps one and two to obtain a warm and leak-proof down jacket.

[0094] The down jackets produced according to Examples 1-2, Comparative Examples 1-4, and the blank group were tested for their down-proof performance.

[0095] The test method for down-proof performance is based on the test method in GB / T 14272-2021 "Down Garments";

[0096] The test is divided into three rounds.

[0097] The first round consisted of washing the down jacket five times and air-drying it. The washing was done in a drum washing machine at a speed of 1200 r / min for 36 minutes.

[0098] The second round involves washing the down jacket 15 times and air-drying it. The washing process is done in a drum washing machine at a speed of 1000 r / min for 45 minutes.

[0099] The third round involved washing the down jacket 35 times and then air-drying it. The washing was done in a drum washing machine at a speed of 1200 rpm for 42 minutes.

[0100] The evaluation criteria for down-proof performance are shown in Table 2:

[0101] Table 2 Evaluation Standards for Down-Proof Performance

[0102]

[0103] The specific test data are shown in Table 3:

[0104] Table 3 Detection Data Table

[0105]

[0106] Conclusion: Based on the experimental data of Examples 1 and 2, it can be seen that the down jacket obtained by Example 2, after being washed 5, 15, and 35 times, has a lower down leakage value than the down jacket obtained by Example 1. Therefore, the down jacket obtained by Example 2 has better down leakage performance.

[0107] Based on the experimental data of comparative examples 1-4 and the blank group, we can conclude that:

[0108] Compared with the blank group and Example 2, it is shown that the down jacket obtained by sewing according to the sewing method of the present invention has a significant improvement in the down-proof performance, and after multiple washes, the down-proof performance of the down jacket can still be maintained in the superior category.

[0109] Compared with Example 2, Comparative Example 1 lacks the second hot-pressing process. After the second sewing, it directly enters the third sewing. When the down between the outer layer 1 and the inner layer 2 leaks down, the path will enter the collection chamber along the first seam 4. Then, along the lateral movement path between the movable section of the protective layer 3 and the first hot-pressing section of the protective layer 3, it will enter the second seam 5 from the collection chamber and leak out through the needle hole of the second seam 5. Therefore, the down jacket obtained according to Example 2 has significantly better down leakage performance than the down jacket obtained according to Comparative Example 1.

[0110] Compared with Example 2, Comparative Example 2 lacks the sealing baffle 6. During the third sewing, the movable ends of the two protective layers 3 are directly stacked and covered on the sides of the outer layer 1 and the inner layer 2 for sewing. Without the sealing baffle 6 to block the sides of the outer layer 1 and the inner layer 2, the down between the outer layer 1 and the inner layer 2 will move along the lateral movement path between the outer layer 1 and the inner layer 2 to the gap between the sides of the outer layer 1 and the inner layer 2 and the movable ends of the two protective layers 3, and then leak out through the needle hole of the third seam 7. Therefore, the down jacket obtained according to Example 2 has significantly better down leakage performance than the down jacket obtained according to Comparative Example 2.

[0111] Compared with Example 2, Comparative Example 3 lacks the second heat-pressing treatment. After the second sewing, it directly enters the third sewing. It also lacks the sealing baffle 6. During the third sewing, the movable ends of the two protective layers 3 are directly stacked and covered on the sides of the outer layer 1 and the inner layer 2 for sewing. The lack of the sealing baffle 6 to block the sides of the outer layer 1 and the inner layer 2 results in a further reduction in the down-proof performance of the down jacket compared with Example 2. Based on Comparative Examples 1-2, the down-proof performance of Comparative Example 3 is further reduced, and after 35 washes, its down-proof performance is reduced to unqualified.

[0112] Compared with Example 2, Comparative Example 4 does not form a collection cavity that can enclose the first seam 4. Instead, the protective layer 3 is directly folded and covered on top of the protective layer 3 to form a double protective layer 3. Then, the outer layer 1, the inner layer 2, the double protective layer 3 above the outer layer 1, and the double protective layer 3 below the inner layer 2 are directly sewn together by the first seam 4. When the down between the outer layer 1 and the inner layer 2 leaks down, the path will move along the lateral movement path between the outer layer 1 and the inner layer 2 and leak out through the needle holes of the first seam 4 and the second seam 5. Therefore, the down jacket obtained according to Example 2 has significantly better down leakage performance than the down jacket obtained according to Comparative Example 4.

[0113] 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 method for sewing a warm and leak-proof down jacket, characterized in that: The specific steps are as follows: Step 1: First sewing and heat pressing Align the outer edges of the outer layer (1) and the inner layer (2) and lay them flat. Then lay the protective layer (3) on the outer surface of the outer layer (1) and the inner layer (2) respectively. Sew the outer layer (1), the inner layer (2) and the protective layer (3) together through the first seam (4). The outer layer (1) and the inner layer (2) are sewn into a bag shape and have a filling opening. The first heat-pressing treatment is carried out with the first seam (4) as the central axis so that the first heat-pressed section of the protective layer (3), the outer layer (1) and the inner layer (2) are bonded and fixed together. Step Two: Second Sewing and Heat Pressing After the first step, the movable section of the protective layer (3) is folded over and covered on the first hot-pressed section of the protective layer (3). A collection cavity is formed between the movable section of the protective layer (3) and the first hot-pressed section of the protective layer (3) to wrap the first seam (4). The outer layer (1), inner layer (2), movable section of the protective layer (3), and first hot-pressed section of the protective layer (3) are sewn together by the second seam (5). A second hot-pressing process is carried out with the second seam (5) as the central axis to make the second hot-pressed section of the protective layer (3), the first hot-pressed section of the protective layer (3), the outer layer (1), and the inner layer (2) bonded and fixed to each other. Step 3: Third sewing After the second step, the sealing baffle (6) is bonded and fixed on the sides of the outer layer (1) and the inner layer (2). The movable ends of the two protective layers (3) are stacked and covered on the outer surface of the sealing baffle (6). The sides of the outer layer (1) and the inner layer (2), the movable ends of the two protective layers (3), and the sealing baffle (6) are sewn together by the third seam (7). Step 4: Filling and Sealing After step three, fill the jacket with down through the filling port. After filling, sew the filling port according to the steps one through three to obtain a warm and leak-proof down jacket.

2. The method for sewing a warm and leak-proof down jacket according to claim 1, characterized in that: In step one, the hot pressing pressure is 7-10 MPa, the hot pressing temperature is 95-110℃, and the hot pressing speed is 20-30 m / min.

3. The method for sewing a warm and leak-proof down jacket according to claim 1, characterized in that: In step two, the hot pressing pressure is 15-18 MPa, the hot pressing temperature is 130-150℃, and the hot pressing speed is 12-18 m / min.

4. The method for sewing a warm and leak-proof down jacket according to claim 1, characterized in that: In steps one, two, and three, the stitch density of the first suture (4), the second suture (5), and the third suture (7) is 9-12 stitches / cm.

5. A method for sewing a warm and leak-proof down jacket according to claim 1, characterized in that: In step three, the sealing baffle (6) includes a sealing strip body (61), a conveying cavity (62) opened inside the sealing strip body (61) near the side of the outer layer (1) and the inner layer (2), and a cavity (63) opened inside the sealing strip body (61). A partition plate is left between the conveying cavity (62) and the cavity (63). Several conveying holes (64) are opened on the side wall of the conveying cavity (62) near the outer layer (1) and the inner layer (2).

6. A method for sewing a warm and leak-proof down jacket according to claim 5, characterized in that: The several conveying holes (64) are symmetrically distributed along the central axis of the seam where the outer layer (1) and the inner layer (2) are in contact with each other.

7. A method for sewing a warm and leak-proof down jacket according to claim 6, characterized in that: In step three, the method of bonding and fixing the sealing baffle (6) on the sides of the outer layer (1) and the inner layer (2) is as follows: adhesive is injected into the inside of the conveying cavity (62), the adhesive is conveyed through the conveying cavity (62) and output through the conveying hole (64) and immersed into the sides of the outer layer (1) and the inner layer (2), pressed and shaped by the pressing roller, and then cured. The sealing baffle (6) can be bonded and fixed to the sides of the outer layer (1) and the inner layer (2) by the adhesive.

8. A method for sewing a warm and leak-proof down jacket according to claim 7, characterized in that: The pressure of the pressing roller is 3-5 MPa.

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