Breathable waterproof high-elastic polylactic acid fabric

Abstract

The utility model relates to a breathable waterproof high-elastic polylactic acid fabric which comprises a fabric layer subjected to fluoride-free waterproof finishing, up-down communicated micropores are formed in the fabric layer, a thin film layer is arranged on the bottom surface of the fabric layer, up-down communicated air holes are formed in the thin film layer, a lining layer is arranged on the bottom surface of the thin film layer, and the lining layer is arranged on the bottom surface of the lining layer. The lining layer, the fabric layer and the thin film layer are attached together through a plurality of glue layers which are attached to the upper face and the lower face of the thin film layer in a point mode, and gaps are formed between the adjacent glue layers on the same plane. The breathable waterproof high-elastic polylactic acid fabric belongs to bio-based polylactic acid fabric, the production process is cleaner, the damage to the environment can be reduced, and ecological balance and sustainable development can be promoted; the health and safety of consumers can be guaranteed, meanwhile, the breathable, moisture-permeable and waterproof performance is excellent, the microenvironment of the human body is kept dry, comfortable, environment-friendly and sustainable, and the wearers can keep the dry and comfortable state in the humid and cold environment.

Description

Technical Field

[0001] The utility model relates to a breathable and waterproof fabric, in particular to a breathable and waterproof high-elastic polylactic acid fabric. Background Art

[0002] Traditional waterproof fabrics only meet the need for waterproofing, not breathability. While wearing clothing, the human body continuously generates heat and moisture, especially during exercise or in warmer environments, when sweating increases. Waterproof, non-breathable fabrics prevent air from escaping, causing the temperature inside the garment to rise continuously. This can make the wearer feel stuffy and uncomfortable. Prolonged exposure to this condition can also cause skin problems such as itching and eczema. For demanding activities like hiking and running, non-breathable fabrics restrict flexibility and range of motion. Because the garment cannot vent air and adjust its shape with movement, it can feel restrictive and affect the fluidity of movement. Furthermore, since air cannot escape, it accumulates within the fabric over time, negatively impacting its structure and performance. This can cause fibers to soften and deform, reducing its strength and durability.

[0003] In addition, the production and processing of traditional fabrics often generate large amounts of wastewater, waste gas and solid waste, causing serious damage to the soil, water and air, which is not conducive to environmental protection. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a breathable, waterproof and highly elastic polylactic acid fabric which has good air permeability, moisture permeability and waterproof performance and can reduce damage to the environment.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] A breathable, waterproof, highly elastic polylactic acid fabric comprises a fabric layer that has been subjected to a fluorine-free waterproof finishing process, the fabric layer having micropores communicating with each other in upper and lower directions, a film layer provided on the bottom surface of the fabric layer, the film layer having breathable holes communicating with each other in upper and lower directions, a lining layer provided on the bottom surface of the film layer, the lining layer, the fabric layer, and the film layer being bonded together by a plurality of glue layers that are point-applied to the upper and lower surfaces of the film layer, and gaps being provided between adjacent glue layers on the same plane.

[0007] Furthermore, the fabric layer is composed of warp yarns and weft yarns composed of polylactic acid high-elastic yarns interwoven in a two-up-one-down manner, and the interwoven parts of two adjacent warp yarns and two adjacent weft yarns enclose micropores.

[0008] Furthermore, the thickness of the polylactic acid high-elastic yarn is 75D, each strand of the polylactic acid high-elastic yarn is composed of 72 polylactic acid filaments, the gram weight is 120GSM, and the yarn count is 149T*86T.

[0009] Furthermore, the film layer is a PU nano film, and its upper surface has hydrophobic protrusions protruding upward, and a hydrophobic groove is formed between two adjacent protrusions.

[0010] Furthermore, the diameter of the vent hole is larger than the diameter of the gas molecule and smaller than the diameter of the water molecule.

[0011] Furthermore, the lining layer is 50D / 144F football grid polylactic acid polar fleece with a gram weight of 80GSM.

[0012] Compared with the existing technology, the benefits of the present invention are: this breathable, waterproof and highly elastic polylactic acid fabric can be used in outdoor sportswear. It is a bio-based polylactic acid fabric, and the production process is usually cleaner, which can reduce damage to the environment, promote ecological balance and sustainable development, reduce dependence on limited natural resources, and alleviate the pressure of resource shortages; for human health, bio-based fabrics avoid some harmful chemicals used in the production of traditional fabrics, such as formaldehyde, heavy metals, etc., reduce potential harm to the human body, and help protect the health and safety of consumers. At the same time, it has excellent air permeability, moisture permeability, and waterproof properties, keeping the human microenvironment dry and comfortable and environmentally sustainable, so that the wearer can stay dry and comfortable even in humid and cold environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic diagram of the layered structure of a breathable, waterproof, highly elastic polylactic acid fabric of the utility model;

[0015] Figure 2 This is a schematic diagram of the fabric layer structure of a breathable, waterproof, highly elastic polylactic acid fabric of the utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the film layer in a breathable, waterproof, highly elastic polylactic acid fabric of the utility model;

[0017] Figure 4 The utility model is a schematic diagram of the structure of the lining layer of a breathable, waterproof and highly elastic polylactic acid fabric.

[0018] In the figure: 1. Fabric layer; 11. Warp yarn; 12. Weft yarn; 13. Micropores; 2. Glue layer; 21. Gap; 3. Film layer; 31. Hydrophobic protrusions; 32. Hydrophobic grooves; 33. Breathable holes; 4. Lining layer. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating an orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is typically placed when in use. They are merely for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operate in a specific orientation. Therefore, they should not be understood as limiting the present invention. Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0021] Furthermore, the use of terms such as "horizontal" and "vertical" does not necessarily imply that the component must be absolutely horizontal or vertical, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure or component must be completely horizontal, but rather that it can be slightly tilted.

[0022] In the description of the embodiments of the present invention, "a plurality" represents at least 2.

[0023] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0024] Example

[0025] Please refer to the instruction manual Figure 1 As shown in the instruction manual, Figure 1 This utility model is a breathable, waterproof, and highly elastic polylactic acid fabric layer structure. The breathable, waterproof, and highly elastic polylactic acid fabric includes a fabric layer 1 that has been treated with fluorine-free waterproofing. The fabric layer 1 has been treated with fluorine-free waterproofing and is environmentally friendly. Its waterproof grade before washing reaches level 4. Figure 2 As shown, the fabric layer 1 is composed of warp yarn 11 and weft yarn 12 composed of polylactic acid high-elastic yarn, which are interwoven in a two-up-one-down manner and have good mechanical elasticity. The thickness of the polylactic acid high-elastic yarn is 75D, and each polylactic acid high-elastic yarn is composed of 72 polylactic acid filaments, with a gram weight of 120GSM and a yarn count of 149T*86T. The woven fabric feels comfortable and soft, and the surface has a 0.2 checkered texture with a three-dimensional sense, which is suitable for use in outdoor clothing. The polylactic acid filaments are made of polylactic acid fiber (commonly known as corn fiber), which is a synthetic fiber whose raw material can be planted, is easy to plant, and the waste can be completely degraded in nature. Its raw material polylactic acid (PLA) is a The novel biodegradable material is made from starch raw materials extracted from renewable plant resources; the starch raw materials are saccharified to obtain glucose, which is then fermented with glucose and certain bacteria to produce high-purity lactic acid, and polylactic acid of a certain molecular weight is synthesized by chemical synthesis. It has good biodegradability and can be completely degraded by microorganisms in nature after use, eventually generating carbon dioxide and water, which does not pollute the environment and is very beneficial to protecting the environment. It is also a recognized environmentally friendly material; the interwoven parts of the two adjacent warp yarns 11 and the two weft yarns 12 enclose micropores 13, which connect the upper and lower surfaces of the fabric layer 1 and have good air permeability; the bottom surface of the fabric layer 1 is provided with a film layer 3, see the attached manual for details. Figure 3As shown, the film layer 3 is a PU nano film, and its upper surface has an upwardly protruding hydrophobic protrusion 31, and a hydrophobic groove 32 is formed between two adjacent protrusions, with excellent waterproof performance. In order to ensure the air permeability and moisture permeability, the film layer 3 is provided with upper and lower connected air holes 33, and the diameter of the air holes 33 is larger than the diameter of the gas molecule and smaller than the diameter of the water molecule. It penetrates the bottom surface of the film layer 3 and the top of the hydrophobic protrusion 31, and discharges water vapor molecules to the outside through moisture absorption-transfer-release. At the same time, the PU nano film does not absorb water, so that the film remains dry and durable, has excellent air permeability, moisture permeability and waterproof performance, keeps the human microenvironment dry and comfortable, and feels soft and delicate, is environmentally friendly and sustainable, does not contain harmful substances such as fluorine and heavy metals, helps to protect the health and safety of users, and enables the wearer to remain dry and comfortable in humid and cold environments.

[0026] The bottom surface of the film layer 3 is provided with a lining layer 4, such as Figure 4 As shown, the lining layer 4 is 50D / 144F football grid polylactic acid polar fleece with a gram weight of 80GSM. This polylactic acid polar fleece has good thermal insulation performance and high pile density, which can effectively maintain body heat and block external cold air. Its raw materials come from plants and can be naturally degraded into carbon dioxide and water in the environment without causing pollution or damage to the environment. It is also breathable, moisture-absorbing and quick-drying, and its surface is hydrophobic, which can transfer body sweat to the outside to keep it dry and comfortable.

[0027] See the instructions attached Figure 1 As shown, in order to laminate the fabric layer 1, the film layer 3 and the lining layer 4 together, the lining layer 4 and the fabric layer 1 and the film layer 3 are bonded together by several glue layers 2 that are affixed to the upper and lower surfaces of the film layer 3. The glue used in the glue layer 2 is an environmentally friendly breathable resin glue, which is green and environmentally friendly, and there is a gap 21 between adjacent glue layers 2 on the same plane to maintain the breathable effect between the fabric layer 1, the film layer 3 and the lining layer 4 above and below.

[0028] Unlike traditional fabrics, which often generate large amounts of wastewater, waste gas and solid waste during production and processing, causing serious damage to the soil, water and air, the breathable, waterproof and highly elastic polylactic acid fabric of the present invention is usually cleaner in the production process, can reduce damage to the environment, and promote ecological balance and sustainable development.

[0029] This breathable, waterproof, and highly elastic polylactic acid fabric can be used in outdoor sportswear. It is a bio-based polylactic acid fabric, and the production process is usually cleaner, which can reduce damage to the environment, promote ecological balance and sustainable development, reduce dependence on limited natural resources, and alleviate the pressure of resource shortages. For human health, bio-based fabrics avoid some harmful chemicals used in the production of traditional fabrics, such as formaldehyde and heavy metals, reducing potential harm to the human body and helping to protect the health and safety of consumers. At the same time, it has excellent air permeability, moisture permeability, and waterproof properties, keeping the human microenvironment dry, comfortable, and environmentally sustainable, allowing the wearer to stay dry and comfortable even in wet and cold environments.

[0030] It should be emphasized that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A breathable, waterproof, highly elastic polylactic acid fabric, characterized by: The invention comprises a fabric layer (1) which has been subjected to fluorine-free waterproof finishing, wherein the fabric layer (1) has micropores (13) which are connected to each other from top to bottom, a film layer (3) is provided on the bottom surface of the fabric layer (1), wherein the film layer (3) has air vents (33) which are connected to each other from top to bottom, and a lining layer (4) is provided on the bottom surface of the film layer (3), wherein the lining layer (4) and the fabric layer (1) and the film layer (3) are bonded together by a plurality of glue layers (2) which are point-bonded to the upper and lower surfaces of the film layer (3), and a gap (21) is provided between adjacent glue layers (2) on the same plane.

2. The breathable, waterproof, highly elastic polylactic acid fabric according to claim 1, characterized in that: The fabric layer (1) is composed of warp yarns (11) and weft yarns (12) made of polylactic acid high-elastic yarns interwoven in a two-up-one-down manner, and the interwoven parts of two adjacent warp yarns (11) and two weft yarns (12) enclose micropores (13).

3. The breathable, waterproof, highly elastic polylactic acid fabric according to claim 2, characterized in that: The thickness of the polylactic acid high-elastic yarn is 75D, each polylactic acid high-elastic yarn is composed of 72 polylactic acid filaments, the gram weight is 120GSM, and the yarn count is 149T*86T.

4. The breathable, waterproof, highly elastic polylactic acid fabric according to claim 1, characterized in that: The film layer (3) is a PU nanofilm, and its upper surface has hydrophobic protrusions (31) protruding upward, and a hydrophobic groove (32) is formed between two adjacent protrusions.

5. The breathable, waterproof, highly elastic polylactic acid fabric according to claim 1, characterized in that: The diameter of the vent hole (33) is larger than the diameter of a gas molecule and smaller than the diameter of a water molecule.

6. The breathable, waterproof, highly elastic polylactic acid fabric according to claim 1, characterized in that: The lining layer (4) is 50D / 144F football grid polylactic acid polar fleece with a gram weight of 80GSM.

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