A thermal comfort micro-porous sandwich structure of a shell fabric

Abstract

This invention discloses a thermal and moisture-comfortable microporous sandwich structure windbreaker fabric, relating to the field of fabric technology. The fabric includes a bottom layer, a middle layer, and a top layer. The fabric body comprises a bottom layer, a middle layer, and a top layer, and is composited using a sandwich structure. The bottom layer uses 30D yarn, the middle layer uses a two-component polypropylene microporous membrane, and the top layer uses 30D N66 double-thread grid. The use of a two-component polypropylene microporous membrane optimizes and innovates breathability and moisture permeability, retaining the breathability under micro-pressure while improving thermal and moisture comfort.

Description

Technical Field

[0001] This invention relates to the field of fabric technology, specifically to a thermal and moisture-comfortable microporous sandwich structure windbreaker fabric. Background Technology

[0002] The main protective properties of outdoor jacket materials lie in their high abrasion resistance, waterproof performance, and breathability, easily handling unpredictable weather conditions during travel. Windproofing and warmth are primarily determined by waterproof performance, such as the new national standard GB / T32614-2023, which requires Class I outdoor jackets to have a water pressure of no less than 6000 mmH2O before and after washing, and a breathability of no less than 6000 G / m2 / 24h before and after washing. Sandwich technology solutions are mainly used, including hydrophilic TPE waterproof and breathable membranes (such as PU, TPU, TPEE, etc.) and hydrophobic e-PTFE and ePE waterproof and breathable membranes. Hydrophilic TPE material is the mainstream product on the market, and its waterproof and breathable performance meets the basic performance requirements of the national standard, but it suffers from poor breathability and rapid heat buildup during strenuous activity, leading to overheating. Two-component ePE waterproof and breathable membranes offer better thermal and moisture comfort than TPE material, but they still do not solve the problem of breathability under low air pressure. Disadvantages: Currently, e-PTFE membrane material offers the best waterproof, breathable, and low-pressure performance in the field of outdoor protective clothing. However, its high PFAS content has led to its gradual ban by the industry and government. Breakthroughs are urgently needed to address the current issues of excessive protection and insufficient physiological comfort (breathability and moisture resistance) in outdoor clothing. Even in extreme travel environments, maintaining proper temperature control and avoiding overheating, while ensuring durability and high-efficiency protection, has become a crucial safeguard for outdoor enthusiasts. Summary of the Invention

[0003] Therefore, in order to overcome the above-mentioned shortcomings, the present invention provides a thermal and moisture-comfortable microporous sandwich structure for rain jackets.

[0004] The present invention is achieved by constructing a thermal and moisture-comfortable microporous sandwich structure for a windproof jacket. The device includes a fabric body, which includes a bottom layer, a middle layer, and a top layer, and is composed of a sandwich structure. The bottom layer is made of 30D yarn, the middle layer is made of a two-component polypropylene microporous membrane material, and the top layer is made of 30D N66 double-line grid. The surface layer is woven from a first weft, a second weft, and warp. The first weft, the second weft, and the warp are all 30D / 34F nylon 66 dull high-elastic yarn. The warp interweaves with the first weft to form a second weft point and with the second weft to form a first weft point. The first and second weft points are arranged alternately in an up-down manner to form a dense double-line grid structure. The finished warp and weft density of the surface layer is 660*560T / 10CM.

[0005] Preferably, the intermediate layer is a two-component polypropylene microporous membrane made of polypropylene and polyethylene blend, with a porosity of 65-75%, an average pore size of 150 nm, and a staggered three-dimensional structure.

[0006] Preferably, the bottom layer, intermediate layer, and top layer are connected by a hot-melt composite process.

[0007] Preferably, the water pressure resistance of the fabric body is ≥10000mmH2O.

[0008] Preferably, the moisture permeability of the fabric body is ≥7000g / m²·24h.

[0009] Preferably, the air permeability of the fabric body is 0.89 mm / s.

[0010] Preferably, the wet resistance of the fabric body is 11.4 m²·Pa / W, and in the general sports comfort range, 6 ≤ wet resistance ≤ 13.

[0011] The present invention has the following advantages: By improving the thermal and moisture-comfortable microporous sandwich structure of the rain jacket fabric provided herein, the present invention has the following improvements compared with similar equipment: The thermal and moisture-comfort microporous sandwich structure of the windbreaker fabric described in this invention uses a two-component polypropylene microporous membrane material, thereby optimizing and innovating its breathability and moisture permeability, while retaining the breathability of the material under micro-pressure and improving thermal and moisture comfort. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the surface layer structure of the present invention; Figure 3 This is a schematic diagram of the electron microscope structure of the two-component polypropylene microporous membrane material of the present invention.

[0013] Among them: bottom layer-1, middle layer-2, surface layer-3, first parallel of latitude-31, second parallel of latitude-32, meridian-33, first weaving point-34, second weaving point-35. Detailed Implementation

[0014] The following is in conjunction with the appendix Figures 1-3 The principles and features of the present invention are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0015] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The embodiments of this invention will now be described according to its overall structure.

[0017] Please see Figures 1-3 The present invention discloses a thermal and moisture-comfortable microporous sandwich structure windbreaker fabric, comprising a fabric body, which includes a bottom layer 1, a middle layer 2, and a top layer 3, and is composed of a sandwich structure. The bottom layer 1 is made of 30D yarn, which helps to improve the skin-friendly feel.

[0018] The intermediate layer 2 is made of two-component polypropylene microporous membrane material, and the surface layer 3 is made of 30D N66 double-line grid.

[0019] The surface layer 3 is woven from the first weft 31, the second weft 32 and the warp 33. The first weft 31, the second weft 32 and the warp 33 are all 30D / 34F nylon 66 dull high elastic yarn. The warp 33 interweaves with the first weft 31 to form the second weft point 35 and interweaves with the second weft 32 to form the first weft point 34. The first weft point 34 and the second weft point 35 are arranged alternately in an up-down manner to form a dense double-line grid structure. The finished warp and weft density of the surface layer 3 is 660*560T / 10CM.

[0020] The intermediate layer 2 is a two-component polypropylene microporous membrane made of polypropylene and polyethylene blend. Its porosity is 65-75%, the average pore size is 150nm, and it has a staggered three-dimensional structure.

[0021] The bottom layer 1, the middle layer 2, and the top layer 3 are connected by a hot melt composite process.

[0022] The fabric itself has a water pressure resistance of ≥10000mmH2O.

[0023] The moisture permeability of the fabric itself is ≥7000g / m²·24h.

[0024] The fabric itself has an air permeability of 0.89 mm / s.

[0025] The fabric itself has a wet resistance of 11.4 m²·Pa / W. In the general comfort range for sports, 6 ≤ wet resistance ≤ 13.

[0026] The working principle of the above-mentioned thermal and moisture-comfort microporous sandwich structure for windbreaker fabric is as follows: During use, the fabric itself provides high-strength abrasion resistance and tear resistance through the 30D N66 double-line grid of the surface layer 3. The bicomponent polypropylene microporous membrane material of the middle layer 2 has a nano-level staggered pore structure that combines hydrophobicity and high porosity, achieving efficient rain protection, high moisture permeability and breathability under low air pressure. The 30D voile yarn of the bottom layer 1 enhances the skin-friendly feel. The three are thermally melted together to ensure waterproof and windproof properties in extreme environments, while the low moisture resistance allows for rapid heat and moisture removal during strenuous exercise, achieving a balance between protection and thermal and moisture comfort.

[0027] This invention provides a thermal and moisture-comfort microporous sandwich structure for windbreakers by improving the fabric. It uses a two-component polypropylene microporous membrane material to optimize and innovate the breathability and moisture permeability, while maintaining the breathability of the material under micro-pressure and improving thermal and moisture comfort.

[0028] The above description shows and illustrates the basic principles, main features, and advantages of the present invention. Standard parts used in the present invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A thermal and moisture-comfortable microporous sandwich structure windbreaker fabric, comprising a fabric body, the fabric body comprising a bottom layer (1), a middle layer (2) and a top layer (3), which are composited in a sandwich structure, wherein the bottom layer (1) is made of 30D yarn, the middle layer (2) is made of two-component polypropylene microporous membrane material, and the top layer (3) is made of 30D N66 double-line grid. Its features are: The surface layer (3) is woven from a first weft (31), a second weft (32) and a warp (33). The first weft (31), the second weft (32) and the warp (33) are all 30D / 34F nylon 66 dull high elastic yarn. The warp (33) interweaves with the first weft (31) to form a second weft point (35) and interweaves with the second weft (32) to form a first weft point (34). The first weft point (34) and the second weft point (35) are arranged alternately in an up-down manner to form a dense double-line grid structure. The finished warp and weft density of the surface layer (3) is 660*560T / 10CM.

2. The thermal and moisture-comfortable microporous sandwich structure windbreaker fabric according to claim 1, characterized in that: The intermediate layer (2) is a two-component polypropylene microporous membrane made of polypropylene and polyethylene blend. Its porosity is 65-75%, the average pore size is 150nm, and it has a staggered three-dimensional structure.

3. The thermal and moisture-comfortable microporous sandwich structure windbreaker fabric according to claim 2, characterized in that: The bottom layer (1), the middle layer (2), and the top layer (3) are connected by a hot melt composite process.

4. The thermal and moisture-comfortable microporous sandwich structure windbreaker fabric according to claim 3, characterized in that: The fabric itself has a water pressure resistance of ≥10000mmH2O.

5. The thermal and moisture-comfortable microporous sandwich structure windbreaker fabric according to claim 4, characterized in that: The moisture permeability of the fabric body is ≥7000g / m²·24h.

6. The thermal and moisture-comfortable microporous sandwich structure windbreaker fabric according to claim 5, characterized in that: The fabric itself has an air permeability of 0.89 mm / s.

7. The thermal and moisture-comfortable microporous sandwich structure windbreaker fabric according to claim 6, characterized in that: The wet resistance of the fabric body is 11.4 m²·Pa / W. In the general exercise comfort range, 6 ≤ wet resistance ≤ 13.

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