A method to prevent down leakage from seams in down jackets

Abstract

This invention relates to a method for preventing down leakage from seams in down jackets, comprising the following steps: Step 1: Cutting out inner and outer layer fabrics, laying the down-proof component flat between the inner and outer layer fabrics, and sewing the inner layer fabric, down-proof component, and outer layer fabric together using sewing equipment, leaving a down filling opening; Step 2: Injecting adhesive into the down-proof component through an adhesive delivery component, allowing the adhesive to diffuse onto the outer wall of the down-proof component, performing heat pressing and shaping using a hot pressing device, and then introducing low-temperature gas into the heat-pressed down-proof component through a cooling component. This invention uses the down-proof component to seal the seams. The method of bonding the down-proof component to the inner and outer layer fabrics with adhesive, compared to directly bonding the inner and outer layer fabrics with adhesive, results in an adhesive layer that is less prone to detachment, achieving a more durable down-proof and leak-proof effect.

Description

Technical Field

[0001] This invention belongs to the field of down jacket processing technology, and specifically relates to a method for preventing down leakage from seams in down jackets. Background Technology

[0002] The down filling of down jackets generally consists of down clusters and individual down filaments that detach from the base of the clusters or feathers. These down filaments are quite fine, and when they are near the seams of the jacket, they can easily pass through the needle holes and leak out. Furthermore, with repeated washing, the down filaments tend to detach from the clusters, resulting in an increasing number of individual down filaments. This leakage problem gradually increases with each wash, causing significant inconvenience for consumers. It also leads to a series of issues such as weight loss after washing, reduced warmth, and the leakage of down that often adheres to other clothing.

[0003] In the prior art, such as the authorized invention patent CN115957948A, a sewing method for 3D down-proof down jacket fabric is disclosed. Specifically, it discloses that glue is filled into the seam area of ​​the down jacket fabric, so that the glue can enter the gap between the seam and the down jacket fabric. After the glue blocks the gap, the down cannot escape from the seam, thereby improving the down-proof effect of the down jacket. However, the down jacket sewn by this method still has problems. Specifically, the glue is easy to fall off after multiple washes, and the glue falling off the seam at the needle hole position will cause a large difference between the original needle hole gap and the diameter of the seam, making it easier for down to leak. The down-proof and down-leakage-proof effect is short-lived. Summary of the Invention

[0004] The purpose of this invention is to provide a method for preventing down leakage from the seams of down jackets in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A method for preventing down leakage from seams in down jackets includes the following steps:

[0007] Step 1: Cut out the inner and outer fabrics, lay the anti-down filling piece flat between the inner and outer fabrics, and sew the inner fabric, anti-down filling piece, and outer fabric together using sewing equipment, leaving an opening for down filling.

[0008] Step 2: Adhesive is fed into the anti-fleece part through the adhesive delivery component and spread to the outer wall of the anti-fleece part. The part is then hot-pressed and shaped using a hot-pressing device. Low-temperature gas is then delivered into the hot-pressed and shaped anti-fleece part through a cooling component to cool the inner fabric, the anti-fleece part, and the outer fabric and fix them together.

[0009] Step 3: Fill the filling port with down using the down filling equipment, sew the filling port closed, and then heat-press and shape the filling port using the heat-pressing and shaping equipment.

[0010] As a further optimization of the present invention, in step one, the anti-fleece component includes a cylinder and a strip-shaped sewing segment integrally formed on one side of the cylinder. The sewing positions of the inner fabric, the anti-fleece component, and the outer fabric are located on the sewing segment of the anti-fleece component, and the outer wall of the cylinder of the anti-fleece component is in contact with the inner fabric and the outer fabric.

[0011] As a further optimization of the present invention, the anti-fleece part is made of elastic material, and the cylinder of the anti-fleece part is concave inward on the side away from the sewn section in a "V" shape.

[0012] As a further optimization of the present invention, the cylinder of the anti-fleece component has an internal gas channel, the cylinder wall of the anti-fleece component has symmetrically opened adhesive delivery cavities, the outer wall of the cylinder of the anti-fleece component has symmetrically opened grooves, the inner wall of the grooves has several adhesive delivery holes communicating with the adhesive delivery cavities, the inner wall of the gas channel has an anti-sticking layer, and the cylinder wall of the anti-fleece component has several snap-fit ​​holes.

[0013] As a further optimization of the present invention, in step two, the adhesive delivery assembly includes a delivery chamber sealing cover connected to one end of the adhesive delivery chamber, a liquid delivery pipe connected to the delivery chamber sealing cover, and a booster pump connected to the liquid delivery pipe. The delivery chamber sealing cover is inserted into the snap-fit ​​hole through a fixing post.

[0014] As a further optimization of the present invention, in step two, the cooling component includes an inner cavity sealing cover connected to one end of the gas channel, a gas delivery pipe connected to the inner cavity sealing cover, and a cold air blower connected to the gas delivery pipe. The inner cavity sealing cover is connected to the inside of the snap-fit ​​hole by a fixing post.

[0015] The beneficial effects of this invention are as follows:

[0016] 1) In this invention, the anti-down leakage component is laid flat between the inner and outer fabrics and sewn together with the inner and outer fabrics. Then, the inner and outer fabrics are bonded to the upper and lower parts of the anti-down leakage component with an adhesive. This creates a strong sealing effect at the seam to prevent down from leaking out. Moreover, the way the anti-down leakage component is bonded to the inner and outer fabrics with an adhesive is more durable than the way the inner and outer fabrics are directly bonded with an adhesive. The adhesive layer formed by the adhesive is less likely to fall off, thus achieving a more durable anti-down leakage effect.

[0017] 2) By opening a gas channel inside the down-proof component, the material usage of the down-proof component can be reduced, and it is also convenient for the cooling component to deliver low-temperature gas into the gas channel. Under the same gas volume or blowing time, this cooling method has a longer cooling effect and better cooling effect than blowing directly on the outer surface of the inner and outer fabrics. It can make the adhesion between the inner and outer fabrics and the down-proof component tighter, and can still maintain a good adhesion effect after multiple washes. Thus, the seam of the down jacket obtained by sewing has a good effect of preventing down leakage.

[0018] 3) In this invention, the anti-down-leakage component is recessed inward on the side away from the seam section to form a "V" shape. During the heat-pressing process, the anti-down-leakage component can be folded better, making the contact between the inner and outer fabrics and the anti-down-leakage component more stable and tighter. This heat-pressing method is better than directly pressing the cylindrical anti-down-leakage component, making the adhesion between the inner and outer fabrics and the anti-down-leakage component tighter. Even after multiple washes, it can still maintain a good adhesion effect, so that the seam of the down jacket obtained by sewing has a good effect of preventing down leakage. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a cross-sectional view of the inner layer fabric, outer layer fabric, and anti-fleece component of the present invention.

[0021] Figure 3 This is a perspective view of the anti-down fleece component of the present invention.

[0022] In the diagram: 1. Inner fabric; 2. Outer fabric; 3. Anti-falling material; 4. Gas channel; 5. Adhesive delivery chamber; 6. Adhesive delivery hole; 7. Groove; 8. Anti-adhesive layer; 9. Snap-fit ​​hole; 10. Inner cavity sealing cover; 11. Gas delivery pipe; 12. Air cooler; 13. Delivery chamber sealing cover; 14. Liquid delivery pipe; 15. Booster pump; 16. Fixing column. Detailed Implementation

[0023] 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.

[0024] Example 1

[0025] A method for preventing down leakage from seams in a down jacket, wherein the fabric structure of the down jacket includes an inner fabric 1, a down-proof component 3, and an outer fabric 2. The down-proof component 3 includes a cylinder and an integrally formed strip-shaped sewn section on one side of the cylinder. The sewing positions of the inner fabric 1, the down-proof component 3, and the outer fabric 2 are located on the sewn section of the down-proof component 3. The outer wall of the cylinder of the down-proof component 3 is in contact with the inner fabric 1 and the outer fabric 2.

[0026] The anti-fleece part 3 is made of elastic material, and the cylindrical part 3 is concave inward on the side away from the sewn section in a "V" shape.

[0027] The cylinder of the anti-slip part 3 has an internal gas channel 4. The cylinder of the anti-slip part 3 has symmetrically opened adhesive delivery chambers 5 on its upper and lower sides. The outer wall of the cylinder of the anti-slip part 3 has symmetrically opened grooves 7 on its upper and lower sides. The inner wall of the grooves 7 has several adhesive delivery holes 6 that are connected to the adhesive delivery chambers 5. The inner wall of the gas channel 4 has an anti-sticking layer 8. The cylinder of the anti-slip part 3 has several snap-fit ​​holes 9 on its inner side.

[0028] The production method includes the following steps:

[0029] Step 1: Cut out the inner fabric 1 and the outer fabric 2. Lay the anti-down filling part 3 flat between the inner fabric 1 and the outer fabric 2. Use sewing equipment to sew the inner fabric 1, the anti-down filling part 3, and the outer fabric 2 together, leaving the filling opening.

[0030] Step 2: Adhesive is fed into the anti-fleece part 3 through the adhesive delivery component and spread to the outer wall of the anti-fleece part 3. The adhesive is then hot-pressed and shaped using a hot-pressing device.

[0031] The adhesive delivery assembly includes a delivery chamber sealing cover 13 connected to one end of the adhesive delivery chamber 5, a liquid delivery pipe 14 connected to the delivery chamber sealing cover 13, and a booster pump 15 connected to the liquid delivery pipe 14. The delivery chamber sealing cover 13 is snapped into the snap-fit ​​hole 9 by a fixing post 16.

[0032] Low-temperature gas is delivered into the interior of the heat-pressed and shaped anti-fleece part 3 through the cooling component, so that the inner fabric 1, anti-fleece part 3, and outer fabric 2 are cooled and bonded together.

[0033] The cooling component includes an inner cavity sealing cover 10 connected to one end of the gas channel 4, a gas delivery pipe 11 connected to the inner cavity sealing cover 10, and a cold air blower 12 connected to the gas delivery pipe 11. The inner cavity sealing cover 10 is inserted into the snap-fit ​​hole 9 by a fixing post 16.

[0034] Step 3: Fill the filling port with down using the down filling equipment, sew the filling port closed, and then heat-press and shape the filling port using the heat-pressing and shaping equipment.

[0035] Comparative Example 1

[0036] A method for preventing down leakage from seams in a down jacket, wherein the fabric structure of the down jacket includes an inner fabric 1 and an outer fabric 2, and the manufacturing method specifically involves cutting out the inner fabric 1 and the outer fabric 2, applying adhesive to the seam positions on opposite sides of the inner fabric 1 and the outer fabric 2, and then sewing the inner fabric 1 and the outer fabric 2 together using a sewing device, wherein the seam threads can be soaked in adhesive before sewing, and leaving a down filling opening; performing heat pressing and shaping using a heat pressing device; cooling the outer surfaces of the inner fabric 1 and the outer fabric 2 using an external cooling device; filling down into the down filling opening using a down filling device, sewing the down filling opening, and performing heat pressing and shaping of the down filling opening using a heat pressing and shaping device.

[0037] Comparative Example 2

[0038] A method for preventing down leakage from seams in a down jacket, wherein the fabric structure of the down jacket includes an inner fabric 1, a down-proof component 3, and an outer fabric 2. The down-proof component 3 includes a cylinder and an integrally formed strip-shaped sewn section on one side of the cylinder. The sewing positions of the inner fabric 1, the down-proof component 3, and the outer fabric 2 are located on the sewn section of the down-proof component 3. The outer wall of the cylinder of the down-proof component 3 is in contact with the inner fabric 1 and the outer fabric 2.

[0039] The anti-fleece component 3 is made of elastic material;

[0040] The cylindrical body of the anti-slip part 3 has symmetrically opened adhesive delivery chambers 5 on its upper and lower sides. The outer wall of the cylindrical body of the anti-slip part 3 has symmetrically opened grooves 7 on its upper and lower sides. The inner wall of the grooves 7 has several adhesive delivery holes 6 that are connected to the adhesive delivery chambers 5. The cylindrical body of the anti-slip part 3 has several snap-fit ​​holes 9 on its upper and lower sides.

[0041] The production method includes the following steps:

[0042] Step 1: Cut out the inner fabric 1 and the outer fabric 2. Lay the anti-down filling part 3 flat between the inner fabric 1 and the outer fabric 2. Use sewing equipment to sew the inner fabric 1, the anti-down filling part 3, and the outer fabric 2 together, leaving the filling opening.

[0043] Step 2: Adhesive is fed into the anti-fleece part 3 through the adhesive delivery component and spread to the outer wall of the anti-fleece part 3. The adhesive is then hot-pressed and shaped using a hot-pressing device.

[0044] The adhesive delivery assembly includes a delivery chamber sealing cover 13 connected to one end of the adhesive delivery chamber 5, a liquid delivery pipe 14 connected to the delivery chamber sealing cover 13, and a booster pump 15 connected to the liquid delivery pipe 14. The delivery chamber sealing cover 13 is snapped into the snap-fit ​​hole 9 by a fixing post 16.

[0045] Low-temperature gas is delivered to the outer surfaces of the inner fabric 1 and outer fabric 2 after heat pressing and shaping by external cooling equipment, so as to cool down and bond the inner fabric 1, anti-fleece part 3, and outer fabric 2 together.

[0046] Step 3: Fill the filling port with down using the down filling equipment, sew the filling port closed, and then heat-press and shape the filling port using the heat-pressing and shaping equipment.

[0047] Comparative Example 3

[0048] Unlike Comparative Example 2, in this comparative example, the cylinder of the anti-fleece part 3 is concave inward on the side away from the seam section, forming a "V" shape.

[0049] Comparative Example 4

[0050] A method for preventing down leakage from seams in a down jacket, wherein the fabric structure of the down jacket includes an inner fabric 1, a down-proof component 3, and an outer fabric 2. The down-proof component 3 includes a cylinder and an integrally formed strip-shaped sewn section on one side of the cylinder. The sewing positions of the inner fabric 1, the down-proof component 3, and the outer fabric 2 are located on the sewn section of the down-proof component 3. The outer wall of the cylinder of the down-proof component 3 is in contact with the inner fabric 1 and the outer fabric 2.

[0051] The anti-fleece component 3 is made of elastic material;

[0052] The cylinder of the anti-slip part 3 has an internal gas channel 4. The cylinder of the anti-slip part 3 has symmetrically opened adhesive delivery chambers 5 on its upper and lower sides. The outer wall of the cylinder of the anti-slip part 3 has symmetrically opened grooves 7 on its upper and lower sides. The inner wall of the grooves 7 has several adhesive delivery holes 6 that are connected to the adhesive delivery chambers 5. The inner wall of the gas channel 4 has an anti-sticking layer 8. The cylinder of the anti-slip part 3 has several snap-fit ​​holes 9 on its inner side.

[0053] The production method includes the following steps:

[0054] Step 1: Cut out the inner fabric 1 and the outer fabric 2. Lay the anti-down filling part 3 flat between the inner fabric 1 and the outer fabric 2. Use sewing equipment to sew the inner fabric 1, the anti-down filling part 3, and the outer fabric 2 together, leaving the filling opening.

[0055] Step 2: Adhesive is fed into the anti-fleece part 3 through the adhesive delivery component and spread to the outer wall of the anti-fleece part 3. The adhesive is then hot-pressed and shaped using a hot-pressing device.

[0056] The adhesive delivery assembly includes a delivery chamber sealing cover 13 connected to one end of the adhesive delivery chamber 5, a liquid delivery pipe 14 connected to the delivery chamber sealing cover 13, and a booster pump 15 connected to the liquid delivery pipe 14. The delivery chamber sealing cover 13 is snapped into the snap-fit ​​hole 9 by a fixing post 16.

[0057] Low-temperature gas is delivered into the interior of the heat-pressed and shaped anti-fleece part 3 through the cooling component, so that the inner fabric 1, anti-fleece part 3, and outer fabric 2 are cooled and bonded together.

[0058] The cooling component includes an inner cavity sealing cover 10 connected to one end of the gas channel 4, a gas delivery pipe 11 connected to the inner cavity sealing cover 10, and a cold air blower 12 connected to the gas delivery pipe 11. The inner cavity sealing cover 10 is inserted into the snap-fit ​​hole 9 by a fixing post 16.

[0059] Step 3: Fill the filling port with down using the down filling equipment, sew the filling port closed, and then heat-press and shape the filling port using the heat-pressing and shaping equipment.

[0060] To verify the effect of the anti-down leakage component 3 on the down leakage effect at the seam of the down jacket, Example 1 and four comparative examples were set up, and a blank control group was also set up. The difference between the blank control group and Comparative Example 1 is that no adhesive was applied to the seam between the inner fabric 1 and the outer fabric 2 on the opposite side, and the inner fabric 1 and the outer fabric 2 were directly sewn together, and a down leakage test was performed. The test was divided into initial value, 50 washes, and 120 washes. Each wash was performed in a washing machine at 1200 r / min for 45 minutes. The test method and standard were in accordance with GB / T12705-2009 "Test Method for Down Leakage Resistance of Textile Fabrics". The evaluation standard for the down leakage resistance effect is as follows:

[0061] As shown in Table 1:

[0062]

[0063]

[0064] The test data is shown in Table 2:

[0065]

[0066] Experimental conclusions: As can be seen from the data of Example 1, Comparative Example 1 and the blank control group in Table 2, Example 1 uses an anti-down leakage component 3. This structure is placed between the inner fabric 1 and the outer fabric 2 and sewn together with the inner fabric 1 and the outer fabric 2. This can give the seam of the obtained down jacket a good anti-down leakage effect. Even after multiple washes, it can still have a good anti-down leakage effect. However, the initial anti-down leakage effect of the seam of the down jacket obtained by the technical solution of Comparative Example 1 is much worse than that of Example 1. Moreover, after multiple washes, the adhesive layer is easy to fall off, which causes the anti-down leakage effect of the seam of the down jacket to drop sharply after multiple washes.

[0067] Based on the experimental data from Example 1 and Comparative Examples 2 and 4, in Example 1, after opening a gas channel 4 inside the cylinder of the down-proof component 3, it is convenient for the cooling component to deliver low-temperature gas into the gas channel 4. The low-temperature gas cools the down-proof component 3, and then the adhesive is cooled by the down-proof component 3. Under the same gas volume or blowing time, this cooling method has a longer cooling effect and a better cooling effect than directly blowing the outer surface of the inner fabric 1 and the outer fabric 2. It can make the adhesion between the inner fabric 1, the outer fabric 2 and the down-proof component 3 tighter, and can still maintain a good adhesion effect after multiple washings. Thus, the seam of the down jacket obtained by sewing has a good effect of preventing down leakage.

[0068] Based on the experimental data from Example 1 and Comparative Examples 2-3, in Example 1, the cylindrical anti-down-leakage component 3 is concave inward on the side away from the seam section, forming a "V" shape. During the heat-pressing treatment of the inner fabric 1, the anti-down-leakage component 3, and the outer fabric 2, the anti-down-leakage component 3 can be folded better. This makes the contact between the inner fabric 1, the outer fabric 2, and the anti-down-leakage component 3 more stable and tighter during heat-pressing, so that the inner fabric 1, the outer fabric 2, and the anti-down-leakage component 3 can be bonded and fixed together. This heat-pressing method is more effective than directly pressing the cylindrical anti-down-leakage component 3, making the adhesion between the inner fabric 1, the outer fabric 2, and the anti-down-leakage component 3 tighter. Even after multiple washes, it can still maintain a good adhesion effect, thus giving the seam of the down jacket obtained by sewing a good effect of preventing down leakage and down penetration.

[0069] 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 preventing down leakage from seams in down jackets, characterized in that: Includes the following steps: Step 1: Cut out the inner fabric (1) and the outer fabric (2), lay the anti-down filling part (3) between the inner fabric (1) and the outer fabric (2), and sew the inner fabric (1), the anti-down filling part (3) and the outer fabric (2) together using sewing equipment, leaving the filling opening; The anti-fleece part (3) includes a cylinder and a strip-shaped sewing section integrally formed on one side of the cylinder. The sewing positions of the inner fabric (1), the anti-fleece part (3), and the outer fabric (2) are located on the sewing section of the anti-fleece part (3). The outer wall of the cylinder of the anti-fleece part (3) is in contact with the inner fabric (1) and the outer fabric (2). The cylinder of the anti-slip part (3) has an open gas channel (4), and the cylinder of the anti-slip part (3) has symmetrically opened adhesive delivery chambers (5) on the upper and lower sides. The outer wall of the cylinder of the anti-slip part (3) has symmetrically opened grooves (7) on the upper and lower sides. The inner wall of the grooves (7) has several adhesive delivery holes (6) that are connected to the adhesive delivery chambers (5). The inner wall of the gas channel (4) has an anti-sticking layer (8). The cylinder of the anti-slip part (3) has several snap-fit ​​holes (9). Step 2: Adhesive is delivered into the anti-fleece part (3) through the adhesive delivery component and spread to the outer wall of the anti-fleece part (3). The anti-fleece part (3) is then hot-pressed and shaped using a hot-pressing device. Low-temperature gas is delivered into the anti-fleece part (3) after hot pressing and shaping through a cooling component to cool down the inner fabric (1), the anti-fleece part (3), and the outer fabric (2) and bond them together. The adhesive delivery assembly includes a delivery chamber sealing cover (13) connected to one end of the adhesive delivery chamber (5), a liquid delivery pipe (14) connected to the delivery chamber sealing cover (13), and a booster pump (15) connected to the liquid delivery pipe (14). The delivery chamber sealing cover (13) is inserted into the snap-fit ​​hole (9) by a fixing post (16). The cooling component includes an inner cavity sealing cover (10) connected to one end of the gas channel (4), a gas delivery pipe (11) connected to the inner cavity sealing cover (10), and a cold air blower (12) connected to the gas delivery pipe (11). The inner cavity sealing cover (10) is inserted into the snap-fit ​​hole (9) by a fixing post (16). Step 3: Fill the filling port with down using the down filling equipment, sew the filling port closed, and then heat-press and shape the filling port using the heat-pressing and shaping equipment.

2. The method for preventing down leakage from seams in down jackets according to claim 1, characterized in that: The anti-running fleece part (3) is made of elastic material, and the cylinder of the anti-running fleece part (3) is concave inward on the side away from the sewn section in a "V" shape.

Images