Anti-down leakage micro-bulging yarn for down jackets and its preparation method

Abstract

This invention discloses a down jacket anti-down-leakage micro-bulging yarn and its preparation method, comprising the following steps: S1. Blending polyester staple fiber and PVA fiber at a mass ratio of 9:1 to prepare a single yarn; S2. Coating the single yarn with a fluorocarbon modified polyurethane additive and then baking it; S3. Covering the single yarn with propylene glycol phthalate fiber; S4. Repeatedly coating the covered yarn with the fluorocarbon modified polyurethane additive and baking it; S5. Covering the yarn with polyester staple fiber; S6. Treating the yarn in a solution containing an antistatic agent and water-based silicone wax to melt the PVA fiber and form micro-gaps, and then baking it; S7. Coating the yarn with the fluorocarbon modified polyurethane additive again and baking it; S8. Coating the yarn surface with an antistatic silicone wax and silicone oil mixture to complete the preparation, obtaining the down jacket anti-down-leakage micro-bulging yarn. The down jacket anti-down-leakage micro-bulging yarn of this invention can seal needle holes after sewing through its own micro-expansion, alleviating or even preventing down leakage.

Description

Technical Field

[0001] This invention relates to textile materials, specifically to anti-down-leakage micro-bulging yarn for down jackets and its preparation method. Background Technology

[0002] Traditional down garments commonly suffer from the technical defect of down leakage at the sewn parts. The main reason is that the diameter of the stitch hole formed when the sewing needle pierces the fabric is significantly larger than the diameter of the sewing thread itself, or the stitch hole is enlarged due to the pulling during sewing.

[0003] The most common method in the existing technology to improve the problem of down leakage is to add a down-proof strip to the inside of the stitch, but this increases the complexity of the process and the cost of materials.

[0004] It is particularly noteworthy that conventional sewing thread has a physical gap between itself and the needle hole after sewing, which is difficult to overcome, and this gap cannot be completely sealed using existing processing techniques. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a down jacket anti-down leakage micro-bulging thread and its preparation method, which can seal the needle holes after sewing through its own micro-expansion, thereby alleviating or even preventing down leakage problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A down jacket anti-down leakage micro-bulging yarn, including Single yarn matrix formed by blending polyester staple fiber and PVA fiber; The composite structure is formed by sequentially coating the surface of the single yarn matrix with a propylene glycol phthalate fiber layer and a polyester short fiber layer. A gap space formed by melting PVA fibers is provided between the polyester short fiber layer and the single yarn matrix; The propylene glycol phthalate fiber layer is used to elastically recover and block needle holes after the sewing material thins under pressure.

[0007] As a further improvement of the present invention, the base yarn is formed by blending 90% polyester staple fiber and 10% PVA fiber.

[0008] As a further improvement of the present invention, the surface of the composite structure is coated with at least three layers of fluorocarbon modified polyurethane additives.

[0009] As a further improvement of the present invention, the three-layer fluorocarbon modified polyurethane additive layer is located on the surface of the single yarn matrix, the surface of the propylene glycol phthalate fiber layer, and the surface of the polyester staple fiber, respectively.

[0010] As a further improvement of the present invention, the coating fiber of the polyester short fiber layer is an ultrafine denier polyester fiber.

[0011] A method for preparing anti-down-leakage micro-bulging yarn for down jackets includes the following steps. S1. Prepare single yarn by blending polyester staple fiber and PVA fiber at a mass ratio of 9:1; S2. Coat the single yarn with fluorocarbon modified polyurethane additive and bake; S3. Cover the single yarn with propylene glycol phthalate fiber; S4. Repeat the coating of fluorocarbon modified polyurethane additive on the covered yarn and bake; S5. Cover the yarn with polyester staple fiber; S6. Treat in a solution containing antistatic agent and water-based silicone wax to melt the PVA fiber and form micro-gaps, and bake; S7. Coat again with fluorocarbon modified polyurethane additive and bake; S8. Coat the surface of the yarn with an antistatic silicone wax and silicone oil mixture to complete the yarn preparation; S9. The prepared wire is placed in a freezer for 30 minutes to shrink; S10. The cooled wire is shaped using a hot melt mixing agent.

[0012] As a further improvement of the present invention, the baking method in S2, S4 and S6 is to bake in an oven at 45 degrees Celsius for 1 hour.

[0013] As a further improvement of the present invention, the baking method in S7 is an oven at 40 degrees Celsius for 1.5 hours.

[0014] As a further improvement of the present invention, the treatment method in S6, which involves treating the solution containing an electrostatic agent and water-based silicone wax, is to add an electrostatic agent and water-based silicone wax to boiling water at 130°C and keep it at that temperature for 1-1.5 hours.

[0015] The beneficial effects of this invention are that, when using the sewing thread of this solution, the thread has a slight amount of fuzz, which reduces the temperature generated during high-speed sewing. During high-speed sewing, the stressed thread compresses the gaps where the PVA fibers melt, and the propylene glycol phthalate fibers also become thinner due to compression. After sewing is completed, they gradually recover their elasticity and thicken, blocking the needle holes and preventing down leakage. Furthermore, the fluorocarbon-modified polyurethane additive and the antistatic silicone wax and silicone oil mixture work together to reduce down leakage caused by static electricity and other physical factors. Detailed Implementation

[0016] Raw material preparation: Polyester staple fiber (90%), PVA fiber (10%); fluorocarbon modified polyurethane additives; ultrafine denier polyester fiber (referring to polyester fiber below 0.55 dtex); propylene glycol phthalate fiber; antistatic silicone wax and silicone oil mixed additives; antistatic agent, water-based silicone wax.

[0017] Preparation method: The first step is to select polyester staple fiber (90%) and PVA fiber (10%) to blend into a single yarn; The second step is to coat the single yarn with fluorocarbon-modified polyurethane additives; Third step, bake in an oven at 45 degrees Celsius for 1 hour; The fourth step is to coat the product with propylene glycol phthalate fibers. Fifth step: Apply fluorocarbon modified polyurethane additives again; Step 6: Bake in an oven at 45 degrees Celsius for 1 hour; The seventh step is to further coat the product with polyester staple fibers; Step 8: Then, heat the mixture in boiling water at 130 degrees Celsius with an antistatic agent and water-based silicone wax for 1-1.5 hours. At this time, the PVA fibers will melt, creating gaps in the middle of the sewing thread. Step 9: After taking it out, place it in an oven at 45 degrees Celsius for 1 hour; Step 10: Apply fluorocarbon modified polyurethane additives again; Step 11: Oven at 40 degrees Celsius for 1.5 hours; Step 12: Apply an antistatic silicone wax and silicone oil mixture. Step 13: The prepared wire is placed in a freezer for 30 minutes to shrink. Step fourteen: The cooled wire is shaped using a hot melt mixing agent.

[0018] The above steps can be used to obtain down jacket anti-down-leakage micro-bulging yarn, which includes a single yarn matrix formed by blending polyester staple fiber and PVA fiber. The composite structure is formed by sequentially coating the surface of the single yarn matrix with a propylene glycol phthalate fiber layer and a polyester short fiber layer. A gap space formed by melting PVA fibers is provided between the polyester short fiber layer and the single yarn matrix; The propylene glycol phthalate fiber layer is used to elastically recover and block needle holes after the sewing material thins under pressure.

[0019] Fluorocarbon modified polyurethane additive layers are coated on the surface of the single yarn matrix, the surface of the propylene glycol phthalate fiber layer, and the surface of the polyester staple fiber.

[0020] The sewing thread produced by this method has a slight fuzziness, which reduces the temperature generated during high-speed sewing. During high-speed sewing, the thread is compressed by the force applied to the gaps where the PVA fibers melt, and the propylene glycol phthalate fibers also become thinner due to compression. After sewing is completed, they gradually recover their elasticity, thicken, and block the needle hole.

[0021] After the down jacket is sewn with this thread, it can be ironed to expand the thread, which was originally shrunken, further improving the down-proof effect.

[0022] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for preparing anti-down leakage micro-bulging yarn for down jackets, characterized in that, Includes the following steps S1. Prepare single yarn by blending polyester staple fiber and PVA fiber at a mass ratio of 9:1; S2. Coat the single yarn with fluorocarbon modified polyurethane additive and bake; S3. Cover the single yarn with propylene glycol phthalate fiber; S4. Repeatedly coat the coated wire with fluorocarbon modified polyurethane additives and bake; S5. Coat the wire with polyester short fibers; S6. Treat in a solution containing antistatic agent and water-based silicone wax to melt the PVA fibers and form micro-gaps, and bake; S7. Coat again with fluorocarbon modified polyurethane additives and bake; S8. Coat the wire surface with an antistatic silicone wax and silicone oil mixture to complete the wire preparation; S9. The prepared wire is placed in a freezer for 30 minutes to shrink; S10. The cooled wire is shaped using a hot melt mixing agent; The treatment method for S6 in a solution containing an electrostatic agent and water-based silicone wax is to add an electrostatic agent and water-based silicone wax to boiling water at 130°C and keep it at that temperature for 1-1.5 hours. The down jacket anti-down-leakage micro-bulging yarn prepared by the above preparation method includes... Single yarn matrix formed by blending polyester staple fiber and PVA fiber; The composite structure is formed by sequentially coating the surface of the single yarn matrix with a propylene glycol phthalate fiber layer and a polyester short fiber layer. A gap space formed by melting PVA fibers is provided between the polyester short fiber layer and the single yarn matrix; The propylene glycol phthalate fiber layer is used to elastically recover and block needle holes after the sewing material thins under pressure.

2. The preparation method according to claim 1, characterized in that, The baking method in S2, S4, and S6 is to bake in an oven at 45 degrees Celsius for 1 hour.

3. The preparation method according to claim 1, characterized in that, The baking method in the S7 is 40 degrees Celsius in an oven for 1.5 hours.

4. A down jacket anti-down-leakage micro-bulging yarn prepared by the preparation method of down jacket anti-down-leakage micro-bulging yarn as described in any one of claims 1 to 3, characterized in that, The basic single yarn is formed by blending 90% polyester staple fiber and 10% PVA fiber.

5. The anti-down-leakage micro-bulging yarn for down jackets according to claim 4, characterized in that, The surface of the composite structure is coated with at least three layers of fluorocarbon-modified polyurethane additives.

6. The anti-down-leakage micro-bulging yarn for down jackets according to claim 5, characterized in that, The three-layer fluorocarbon modified polyurethane additive layer is located on the surface of the single yarn matrix, the surface of the propylene glycol phthalate fiber layer, and the surface of the polyester staple fiber, respectively.

7. The anti-down leakage micro-bulging yarn for down jackets according to claim 5, characterized in that, The polyester short fiber layer is coated with ultrafine denier polyester fiber.