A composite fabric with waterproof and breathable functions

Abstract

The present invention discloses a composite fabric with waterproof and breathable functions. The first warp of the first layer of fabric is 50D / 48F polyester low-elastic network yarn, and 150D / 288F polyester low-elastic network yarn is used as the first weft, and the warp and weft density is 100×67-140×95 strands / inch. The present invention adopts conventional raw materials on the market and reasonably designs the warp and weft density, so that the fabric has the functions of softness and breathability, and the weft denier is 3 times the warp denier, so that the weft strips of the fabric surface are clear, that is, the surface of the fabric presents a concave-convex feeling, which greatly increases the breathability of the fabric, and the fabric is soft and does not collapse, has a strong sense of vertical stiffness, and is straight and not wrinkled when worn, and has a good waterproof and anti-fouling function. The second layer of fabric uses 75D / 36F mechanical stretch yarn as the warp and weft, and the warp and weft density is high, which increases the water seepage pressure of the fabric and has a good waterproof effect.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, and in particular to a composite fabric with waterproof and breathable functions. Background Art

[0002] In medical environments, medical staff need to face patients' blood, body fluids and secretions that may contain viruses or bacteria, and there is always a risk of infection. Therefore, medical fabrics need to have good antibacterial and waterproof effects. Traditional waterproof fabrics are usually composite fabrics, which are waterproofed by adding a waterproof layer on the surface or in the middle of the fabric. However, the production process of fabrics produced in this way is complicated, the production cost is high, the finished fabric is thick and heavy, and the air permeability and resilience are poor, which seriously affects the wearing comfort of medical staff.

[0003] To this end, Chinese invention patent CN108914321A provides a waterproof fabric, which is a blended fabric made of 20D polyurethane fiber and 40D polyester yarn. The blended fabric has a gram weight of 140g / m 2 The twist direction of the blended fabric is left-hand twist, the yarn twist is 170 twists / 10cm, and the yarn thickness is 50 English count; the yarn density of the blended fabric is 120×120; the weaving shrinkage of the blended fabric is ±2%; the waterproof ability of the fabric can be improved by covering the polyester yarn with polyurethane fiber, and it has a special waterproof function. However, the above waterproof fabric has the following disadvantages:

[0004] (1) The yarn density of the blended fabric is 120×120, the yarn density is high and the air permeability is poor;

[0005] (2) The process of blending 20D polyurethane fiber and 40D polyester yarn to form a blended fabric has a complicated production process.

[0006] In view of this, there is an urgent need to improve the existing fabric structure to enhance the air permeability and waterproof performance of the fabric. Summary of the invention

[0007] The technical problem to be solved by the present invention is that the existing fabrics have poor air permeability and waterproofness and complex production processes.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is to provide a composite fabric with waterproof and breathable functions, wherein the composite fabric is a fabric structure composed of three layers of fabrics heat-sealed, the fabric structure of the first layer of fabric uses 50D / 48F polyester low-elastic network yarn as the first warp and 150D / 288F polyester low-elastic network yarn as the first weft, and its warp and weft density is 100×67~140×95 roots / inch, the fabric structure of the second layer of fabric uses 75D / 36F mechanical stretch yarn as the first warp and the second weft, and the warp and weft density is 110×83~170×105 roots / inch, the weaving structures of the first layer of fabric and the second layer of fabric are both plain weave structures, and a layer of PU film is arranged between the first layer of fabric and the second layer of fabric.

[0009] In the above technical solution, the first layer of fabric is a fabric structure that has been treated with plasma.

[0010] In the above technical solution, the gram weight of the fabric structure of the first layer of fabric is 85±5g / ㎡.

[0011] In the above technical solution, the first warp and the first weft can be modified polyester low-elastic network yarns made by a POY-DTY ring-blowing cooling process.

[0012] In the above technical solution, the first layer of fabric and the second layer of fabric are fabric structures that have been waterproofed and single-sided calendered.

[0013] In the above technical solution, the second warp threads and the second weft threads are mechanical elastic threads that are not subjected to a heating treatment during the POY thread drawing process.

[0014] In the above technical solution, the fabric structure of the second layer of fabric can be woven by using a water jet loom, Japan Tsudakoma 8100, and the nozzle of the water jet loom is a 30-model nozzle.

[0015] Compared with the prior art, the present invention is a composite fabric with waterproof and breathable function. The first warp of the first layer of fabric is 50D / 48F polyester low-elastic network yarn, and the first weft is 150D / 288F polyester low-elastic network yarn, and the warp and weft density is 100×67~140×95 strands / inch. The present invention adopts conventional raw materials on the market and reasonably designs the warp and weft density, so that the fabric has the functions of softness and breathability, and the weft denier is 3 times the warp denier, so that the weft strips of the fabric surface are clear, that is, the surface of the fabric presents a concave-convex feeling, which greatly increases the breathability of the fabric, and the fabric is soft and not collapsed, has a strong sense of vertical stiffness, and is straight and not wrinkled when worn, and has a good waterproof and anti-fouling function. The second layer of fabric uses 75D / 36F mechanical stretch yarn as the warp and weft, and the warp and weft density is high, which increases the water seepage pressure of the fabric and has a good waterproof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the first layer of the composite fabric with waterproof and breathable functions in the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the second layer of the composite fabric with waterproof and breathable functions in the present invention;

[0018] Figure 3 It is a side view of the composite fabric with waterproof and breathable functions in the present invention.

[0019] in, Figures 1 to 3 The corresponding relationship between the reference numerals and the component names is as follows:

[0020] 10 first layer of fabric, 11 first warp thread, 12 first weft thread, 20 second layer of fabric, 21 second warp thread, 22 second weft thread, 30 PU membrane. DETAILED DESCRIPTION

[0021] The present invention provides a composite fabric with waterproof and breathable functions, which can make the fabric breathable and waterproof, and its production process is simple. The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments of the specification.

[0022] like Figures 1 to 3 As shown, the present invention provides a composite fabric with waterproof and breathable functions. The composite fabric is a fabric structure composed of three layers of fabrics heat-sealed. The fabric structure of the first layer of fabric 10 uses 50D / 48F polyester low-elastic network yarn as the first warp 11 and 150D / 288F polyester low-elastic network yarn as the first weft 12, and its warp and weft density is 100×67~140×95 roots / inch. The fabric structure of the second layer of fabric 20 uses 75D / 36F mechanical stretch yarn as the first warp 11 and the second weft 22 with a warp and weft density of 110×83~170×105 roots / inch. The weaving structures of the first layer of fabric 10 and the second layer of fabric 20 are both plain weave structures, and a layer of PU film 30 is arranged between the first layer of fabric and the second layer of fabric.

[0023] In this embodiment, the first warp 11 of the first layer of fabric 10 is 50D / 48F polyester low-elastic network yarn, and the first weft 12 is 150D / 288F polyester low-elastic network yarn, and the warp and weft density is 100×67~140×95 strands / inch. By using conventional raw materials on the market and reasonably designing the warp and weft density, the fabric has the functions of softness and breathability, and the weft denier is 3 times the warp denier, so that the weft stripes of the fabric are clear, that is, the surface of the fabric presents a concave-convex feeling, which greatly increases the The fabric is breathable, soft but not collapsed, with a strong sense of drape. It stands up straight but not wrinkled when worn and has excellent waterproof and anti-fouling functions. The second layer of fabric 20 uses 75D / 36F mechanical stretch yarn as the warp and weft, with a high density of warp and weft, which increases the water seepage pressure of the fabric and has a good waterproof effect. A layer of PU film 30 is provided between the first layer of fabric and the second layer of fabric, so that the composite fabric has the characteristics of high temperature resistance, can be rubbed during washing, and can be washed and reused at least 70 times.

[0024] In one embodiment of the present invention, preferably, the first layer of fabric 10 is a plasma-treated fabric structure.

[0025] In this embodiment, the first layer of fabric 10 is subjected to a plasma antibacterial treatment so that the first layer of fabric 10 has an antibacterial function. For example, an organic solvent is used as a finishing medium, and a quaternary ammonium salt olefin monomer with antibacterial properties is grafted and polymerized onto the fabric to achieve antibacterial properties for the fabric.

[0026] In one embodiment of the present invention, preferably, the gram weight of the fabric structure of the first layer of fabric 10 is 85±5 g / ㎡. Specific embodiment 1

[0028] In this embodiment, the warp and weft density of the first layer of fabric 10 is 125±5%×80±5% (threads / inch), and the gram weight of the finished product is 85±5 g / ㎡.

[0029]

[0030]

[0031] According to the above table, the first layer of fabric 10 of the present invention has good tensile resistance, can keep the surface of the fabric crisp, and prevent the clothes made therefrom from being deformed. The fabric is soft but not collapsed, has a strong sense of drape, is straight but not wrinkled when worn, and has good waterproof and anti-fouling functions, and can still maintain its original functions after repeated washing.

[0032] In one embodiment of the present invention, preferably, the first warp threads 11 and the first weft threads 12 can be modified polyester low-elastic network yarns made by a POY-DTY ring-blowing cooling process.

[0033] In this embodiment, the first warp thread 11 and the first weft thread 12 can be modified polyester low-elastic network yarn produced by the POY-DTY ring-blowing cooling process. The modified polyester low-elastic network yarn produced by the POY-DTY ring-blowing cooling process has the characteristics of good heat resistance, higher and faster moisture absorption, good air permeability and good gloss.

[0034] In one embodiment of the present invention, preferably, the first layer of fabric 10 and the second layer of fabric 20 are fabric structures that have been waterproofed and calendered on one side.

[0035] In this embodiment, by performing waterproof treatment and single-sided calendering treatment on the first layer of fabric 10 and the second layer of fabric 20, the stiffness and waterproofness of the fabric are improved, and the sewage slides down in the form of water droplets on the front side of the fabric, further preventing the intrusion of dust and bacteria in the air.

[0036] In one embodiment of the present invention, preferably, the second warp threads 21 and the second weft threads 22 are mechanical elastic threads that are not subjected to a heating treatment during the POY thread drawing process.

[0037] In this embodiment, the warp and weft threads are made of 75D / 36F mechanical stretch yarn, which is a mechanical stretch yarn that is not subjected to a heat treatment during the POY yarn drawing process. After subsequent weaving and other treatments, the fibers of the mechanical stretch yarn will automatically become loose, so that the fabric has a higher water seepage pressure, thereby improving its water resistance and enhancing its waterproof effect.

[0038] In one embodiment of the present invention, preferably, the fabric structure of the second layer of fabric 20 can be woven using a water jet loom, Japanese Tsudakoma 8100, and the nozzle of the water jet loom is a 30-model nozzle.

[0039] In this embodiment, the fabric structure can be woven using a water jet loom, Japanese Tsudakoma 8100, and its nozzle adopts a 30-type nozzle. The water jet loom, Japanese Tsudakoma 8100, can electronically adjust the tension, and its warp surface tension is uniform; the tension of the weft storage device can be adjusted according to the production speed of the fabric product, so that the mechanical elastic yarn is not damaged by any external pressure, thereby improving the quality of the finished product; the nozzle adopts a 30-type nozzle, which can protect the mechanical elastic yarn from being damaged by external pressure, so that the elastic yarn maintains its original performance in the product, and further improves the quality of the finished product.

[0040] In one embodiment of the present invention, preferably, conductive threads may be intermittently woven into the weft direction of the second layer of fabric 20, so that the composite fabric of the present application has an antistatic function. Specific embodiment 2

[0042] In this embodiment, the warp and weft density of the second layer of fabric 20 is 158±5%×99±5% (roots / inch), the content of conductive yarn 3 is 1%, the warp spacing of the fabric surface is 5mm, the gram weight of the finished product is 92±5%, and the width is ≥62 inches. Specific embodiment 3

[0044] In this embodiment, the warp and weft density of the second layer of fabric 20 is 115±5%×87±5% (roots / inch), the content of conductive yarn 3 is 1%, the warp spacing of the fabric surface is 5mm, the gram weight of the finished product is 96±5%, and the width is 61.25. Specific embodiment 4

[0046] In this embodiment, the warp and weft density of the second layer of fabric 20 is 158±5%×99±5% (roots / inch), the content of conductive yarn 3 is 1%, the warp spacing of the fabric surface is 15mm, the gram weight of the finished product is 80±5%, and the width is 80±5%.

[0047] The parameters of the above three embodiments and their samples are compared as follows:

[0048]

[0049]

[0050] It can be seen from the above table that the composite fabric provided by the present invention has good waterproofness and high hydrostatic pressure. Under the spray test, the sprayed surface of the fabric is not wet and not stained with water droplets, which can effectively prevent external sewage and other liquids from invading the fabric; the finished fabric has good tensile resistance, which can keep the surface of the fabric crisp, prevent the clothing made therefrom from being deformed, and improve the wearing comfort.

[0051] The present invention provides a waterproof and breathable composite fabric. The first warp 11 of the first layer of fabric 10 is 50D / 48F polyester low-elastic network yarn, and the first weft 12 is 150D / 288F polyester low-elastic network yarn. The warp and weft density is 100×67-140×95 strands / inch. The present invention adopts conventional raw materials on the market and reasonably designs the warp and weft density to make the fabric soft and breathable, and the weft denier is 3 times the warp denier, so that the weft stripes of the cloth are clear, that is, the surface of the fabric presents a concave-convex feeling, which greatly increases the breathability of the fabric, and the fabric is soft but not collapsed, has a strong drape, and is straight but not wrinkled when worn, and has good waterproof and anti-fouling functions. The second layer of fabric 20 uses 75D / 36F mechanical stretch yarn as the warp and weft, and the warp and weft density is relatively high, which increases the water seepage pressure of the fabric and has a good waterproof effect. A layer of PU film is arranged between the first layer of fabric and the second layer of fabric, so that the composite fabric has the characteristic of high temperature resistance, can be rubbed during washing, and can be washed and reused at least 70 times.

[0052] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention.

Claims

1. A composite fabric with waterproof and breathable functions, characterized in that: The composite fabric is a fabric structure composed of three layers of fabrics heat-sealed, the fabric structure of the first layer of fabric uses 50D / 48F polyester low-elastic network yarn as the first warp and 150D / 288F polyester low-elastic network yarn as the first weft, and the warp and weft density is 100×67-140×95 strands / inch, the fabric structure of the second layer of fabric uses 75D / 36F mechanical stretch yarn as the second warp and second weft, and the warp and weft density is 110×83-170×105 strands / inch, the weaving structures of the first layer of fabric and the second layer of fabric are both plain weave structures, and a layer of PU film is provided between the first layer of fabric and the second layer of fabric; The fabric structure of the first layer of fabric has a gram weight of 85±5g / ㎡; The first warp and the first weft are modified polyester low-elastic network yarns made by a POY-DTY ring-blowing cooling process; The first layer of fabric and the second layer of fabric are fabric structures that have been waterproofed and calendered on one side.

2. The waterproof and breathable composite fabric according to claim 1, characterized in that: The first layer of fabric is a plasma-treated fabric structure.

3. The waterproof and breathable composite fabric according to claim 1, characterized in that: The second warp threads and the second weft threads are mechanical elastic threads that are not subjected to a heating treatment during the POY thread drawing process.

4. The waterproof and breathable composite fabric according to claim 1, characterized in that: The fabric structure of the second layer of fabric is woven by a water jet loom, Japanese Tsudakoma 8100, and the nozzle of the water jet loom is a 30-model nozzle.

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