Three-proofing easy-care low-denier down-proof fabric

The low-denier downproof fabric with a three-layer structure and specific fiber design solves the problems of difficult stain removal and down leakage in existing three-proof low-denier down jackets, achieving waterproof, oil-proof, stain-proof, and easy-care effects.

CN223972270UActive Publication Date: 2026-03-06SHANGHAI SENYUE FUTURE CLOTHING TECH CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-09
Publication Date
2026-03-06

AI Technical Summary

Technical Problem

Existing three-proof low-denier down jackets are acceptable in terms of waterproof, oil-proof, and stain-proof performance, but oil stains and dirt are difficult to remove, and down leakage is serious after repeated washing, making them difficult to care for.

Method used

It adopts a three-layer structure design, including a three-proof layer, a hydrophilic layer, and a main fabric layer. The warp and weft yarns are made of 15D-30D nylon 6 fiber with a 4C or 6C grooved profile structure. Combined with polyisocyanate crosslinking agent and calendering layer, it improves the hydrophilicity of the fiber and the tightness of the fabric.

Benefits of technology

It achieves waterproof, oil-proof, and stain-proof effects, and the hydrophilic layer makes stains easy to remove, reduces lint leakage, and improves the fabric's easy-care properties.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a three-proofing easy-care low-denier down-proof fabric, which comprises a three-proofing layer, a hydrophilic layer and a fabric main body layer which are arranged from top to bottom, warp yarns and weft yarns of the fabric main body layer are 15D-30D chinlon 6, and the cross section of the chinlon 6 is of a 4C or 6C groove special-shaped structure. The fabric has waterproof, oil-proof and antifouling functions through the three-proofing layer, the fabric main body layer is made of chinlon 6 with the section of a 4C or 6C groove special-shaped structure, a plurality of grooves can be formed in the surface of the fiber on the premise that the strength of a fabric finished product is not greatly reduced, the hydrophilicity of the fiber can be improved in cooperation with the hydrophilic layer, and the fabric has the waterproof, oil-proof and antifouling functions. And dirt components invading or adsorbed in the fibers are spherical during washing and are stripped from the surfaces of the fibers, so that the effects of decontaminating and easy cleaning are achieved. When the nylon-6 fabric is washed, the grooves in the section of the nylon-6 fabric have a certain shrinkage effect, so that the fabric is more compact, the down leakage effect of the washed fabric is improved to a certain extent, and the easy-care effect of the fabric is improved.
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Description

Technical Field

[0001] This utility model relates to the technical field of textile fabrics, and in particular to a three-proof and easy-care low-denier downproof fabric. Background Technology

[0002] With social development and the improvement of people's living standards, consumers' requirements for clothing fabrics are no longer limited to appearance and warmth. They hope that fabrics have more functions, such as waterproof, oil-proof, stain-proof, and easy-care properties, to adapt to different environments and lifestyles.

[0003] Today, sports have become deeply integrated into people's lives, becoming an indispensable part of daily life. Lightweight down products are increasingly popular among consumers due to their ability to provide a light and comfortable sports experience. As a result, low-denier down jackets with three-proof features are highly favored by the market. However, even though low-denier down jackets with three-proof features have a certain degree of water, oil, and stain resistance, they cannot completely prevent oil stains and dirt from adhering. In particular, low-denier lightweight down fabrics, due to their fine fibers, low DPF (denier to felament ratio), and large specific surface area, will make it difficult to clean and maintain the fabric once oil stains and dirt penetrate into the fibers. In addition, regular down jackets tend to leak down significantly after multiple washes, which also brings some trouble to the fabric care.

[0004] In view of this, this utility model is developed by deeply exploring the many shortcomings and inconveniences caused by the imperfect structural design of existing three-proof low denier down jackets, and actively researching, improving and testing them. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a three-proof and easy-care low-denier downproof fabric.

[0006] To achieve the above objectives, the solution of this utility model is:

[0007] A three-proof and easy-care low-denier downproof fabric, consisting of a three-proof layer, a hydrophilic layer, and a main fabric layer arranged from top to bottom. The main fabric layer is woven from warp and weft yarns according to a certain weave pattern. Both warp and weft yarns are 15D-30D nylon 6, and the cross-section of nylon 6 is a 4C or 6C grooved irregular structure.

[0008] Furthermore, the three-proof layer and the hydrophilic layer are attached together by spraying, and the hydrophilic layer is attached to the surface of the main fabric layer by a polyisocyanate crosslinking agent.

[0009] Furthermore, the DPF coefficient of the main fabric layer is 0.4-0.6. Since the 4C or 6C grooved irregular structure fiber will feel harder than the conventional round hole fiber when subjected to high temperature calendering anti-fleecing operation, by keeping the DPF coefficient at 0.4-0.6, the fabric is made softer while ensuring the overall strength of the fiber and the fabric.

[0010] Furthermore, the three-proof layer is a polyaliphatic compound film composed of fluorocarbon compounds.

[0011] Furthermore, a calendering layer is provided on the reverse side of the main fabric layer.

[0012] Furthermore, the warp density of the main fabric layer is 225T-235T, and the weft density is 195T-205T. Within this density range, the fourth calendering layer can be combined to achieve a down-proof effect without any lining.

[0013] Furthermore, the warp and weft yarns of the main fabric layer are FDY fibers.

[0014] This utility model presents a three-proof and easy-care low-denier downproof fabric. Through its three-proof layer, it achieves waterproof, oil-proof, and stain-proof functions. The warp and weft yarns of the main fabric layer are made of nylon 6 with a 4C or 6C grooved cross-section. While ensuring minimal reduction in the finished fabric strength, this allows multiple grooves to form on the fiber surface. Combined with the hydrophilic layer, this increases the fiber's hydrophilicity. The hydrophilic surface causes dirt that has penetrated or been absorbed into the fiber to spherically detach from the fiber surface during washing, achieving a stain-removing and easy-care effect. During washing, the multiple grooves on the fiber surface have a certain shrinkage effect. With repeated washing, the fabric becomes more compact, thus improving the down-leaking effect after washing and enhancing its ease of care. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the layer structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the main fabric layer of this utility model.

[0017] Figure 3 This is a schematic diagram of the nylon 6 cross-section of the 4C groove of this utility model.

[0018] Figure 4 This is a schematic diagram of the nylon 6 cross-section of the 6C groove of this utility model. Detailed Implementation

[0019] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0020] like Figure 1 As shown, this utility model discloses a three-proof and easy-care low-denier downproof fabric, which includes a four-layer structure arranged from bottom to bottom.

[0021] The first layer (surface layer) is the three-proof layer 1, whose main function is to provide waterproofing, oil resistance, and stain resistance. The three-proof layer is a polyaliphatic compound film composed of fluorocarbon compounds, such as polytetrafluoroethylene (PTFE) film, polyvinylidene fluoride (PVDF) film, or ethylene-tetrafluoroethylene copolymer (ETFE) film, etc.

[0022] The second layer is a hydrophilic layer 2, whose main component is silicone oil of polydimethylsiloxane, used to increase the hydrophilic effect inside the fiber. The first and second layers are attached together by spraying. The second layer is cross-linked onto the fiber surface of the third layer by a polyisocyanate crosslinking agent, which is applied by padding.

[0023] The third layer is the main fabric layer 3, which is woven from warp and weft yarns according to a certain weave pattern. The warp and weft yarns are 15D-30D nylon 6 with a DPF coefficient of 0.4-0.6. The nylon 6 fiber morphology is FDY, and the cross-section is a 4C or 6C grooved irregular structure. Since the 4C or 6C grooved irregular structure fiber will feel harder than the conventional round hole fiber when subjected to high temperature calendering and anti-fleecing operations, this utility model is designed to keep the DPF coefficient at 0.4-0.6, so as to make the fabric softer while ensuring the overall strength of the fiber and the fabric.

[0024] This invention uses fibers with a 4C or 6C grooved cross-section for both warp and weft yarns. While ensuring that the strength of the finished fabric does not decrease significantly, multiple grooves can be formed on the fiber surface. Combined with the effect of the second hydrophilic layer, the hydrophilicity of the fiber is increased. The hydrophilic surface causes dirt components that have penetrated or been adsorbed into the fiber to form spherical shapes during washing and peel off from the fiber surface, achieving the effect of easy cleaning and stain removal.

[0025] Because the cross-section of the 4C or 6C grooved irregular structure fiber will have a certain shrinkage effect during washing, when the fabric is washed multiple times, the fabric becomes tighter, which can improve the lint leakage effect after washing and thus improve the ease of care of the fabric.

[0026] The fabric has a warp density of 225T-235T and a weft density of 195T-205T. By combining this density with a fourth calendering layer, the fabric can achieve a down-proof and lint-free effect.

[0027] The fourth layer is the calendering layer 4, which is attached to the reverse side of the main fabric layer 3 by high-temperature calendering. It improves the density of the fabric and enhances its down-proof effect.

[0028] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A three-proof easy-care low denier non-pilling fabric, characterized by, It comprises three layers of waterproof, hydrophilic and fabric body from top to bottom, the waterproof layer is arranged on the surface of the fabric body layer, the fabric body layer is woven by warp and weft according to a certain weave style, the warp and weft are both 15D-30D nylon 6, the cross section of the nylon 6 is 4C or 6C groove special structure.

2. A low denier repellent easy care fabric according to claim 1, wherein: The waterproof layer and the hydrophilic layer are attached together by spraying, and the hydrophilic layer is attached to the surface of the fabric body layer by polyisocyanate bridging agent.

3. A low denier repellent easy care fabric according to claim 1, wherein: The DPF coefficient of the fabric body layer is 0.4-0.

6.

4. A low denier, repellent, easy care fabric according to claim 1, wherein: The waterproof layer is a polyaliphatic compound film composed of fluorocarbon compounds.

5. A low denier, repellent, easy care fabric according to claim 1, wherein: The reverse side of the fabric body layer is also provided with a calendering layer.

6. A low denier, repellent, easy care fabric according to claim 1, wherein: The warp density of the fabric body layer is 225T-235T, and the weft density is 195T-205T.

7. A low denier, repellent, easy care fabric according to claim 1, wherein: The fiber form of the warp and weft of the fabric body layer is FDY.