A ptfe film composite nylon fabric

Abstract

The utility model provides a kind of PTFE film composite nylon fabric, it is related to the technical field of fabric, comprising: surface layer, first adhesive layer, PTFE functional film layer, second adhesive layer and bottom layer, the surface layer, first adhesive layer, PTFE functional film layer, second adhesive layer and bottom layer are sequentially stacked from top to bottom, the surface layer is the outer layer woven from nylon fiber, the bottom layer is the inner layer woven from nylon fiber, the PTFE functional film layer is the microporous polytetrafluoroethylene film made by two-way stretching, the first adhesive layer and second adhesive layer are hot melt adhesive screen membrane;The utility model, through the nanometer three waterproof finishing agent coating of surface layer surface, greatly improve the surface tension of water, so that water droplet drops on the surface of fabric, will be like falling on lotus leaf like water bead rolls down, and difficult to instantaneous wetting and penetration, then residual pressure under moisture is completely blocked by the micropore of PTFE functional film layer through size repulsion effect, to effectively prevent water seepage.

Description

Technical Field

[0001] This utility model relates to the field of fabric technology, and in particular to a PTFE membrane composite nylon fabric. Background Technology

[0002] Nylon fabrics are widely used in outdoor sportswear, protective clothing and other fields due to their high strength, abrasion resistance and lightweight properties. In order to give nylon fabrics waterproof and breathable functions, laminated composite functional films are often used. Polytetrafluoroethylene microporous membranes, due to their unique microporous structure, can allow water vapor molecules to pass through while blocking liquid water droplets, making them an ideal material for achieving waterproof and breathable functions.

[0003] However, in existing technologies and fabric composite processes, adhesives easily clog the micropores of the PTFE membrane, leading to a significant decrease in moisture permeability. Secondly, the bonding strength between the PTFE membrane and the nylon fabric is insufficient, and delamination and bubbling are prone to occur under repeated friction or rubbing, affecting durability. Finally, the comfort of existing composite fabrics needs to be improved. The inner layer has poor moisture wicking properties, which can easily cause a stuffy feeling when wearing it. Moreover, the outer layer of the fabric has insufficient abrasion resistance and stain resistance, affecting the service life of the fabric. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a PTFE membrane composite nylon fabric.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a PTFE membrane composite nylon fabric, comprising: a surface layer, a first adhesive layer, a PTFE functional membrane layer, a second adhesive layer, and a bottom layer, wherein the surface layer, the first adhesive layer, the PTFE functional membrane layer, the second adhesive layer, and the bottom layer are stacked sequentially from top to bottom; the surface layer is an outer layer woven from nylon fibers; the bottom layer is an inner layer woven from nylon fibers; the PTFE functional membrane layer is a microporous polytetrafluoroethylene film formed by biaxial stretching; the first adhesive layer and the second adhesive layer are hot melt adhesive web films; and the melting points of the first adhesive layer and the second adhesive layer are lower than the melting points of the nylon fibers of the surface layer and the bottom layer.

[0006] In a preferred embodiment, the nylon fibers of the surface layer are treated with a water-repellent finish, and a nano-scale three-proof coating is formed on the surface of the surface layer.

[0007] In a preferred embodiment, the fabric structure of the surface layer and the bottom layer is plain weave, and the warp and weft density of the surface layer is greater than that of the bottom layer.

[0008] In a preferred embodiment, the inner surface of the bottom layer is provided with a moisture-wicking and quick-drying fiber blended area, which is composed of nylon fibers and polypropylene fibers interwoven.

[0009] In a preferred embodiment, a reinforcing fiber bundle is disposed between the surface layer and the first adhesive layer, with one end of the reinforcing fiber bundle penetrating the surface layer and the first adhesive layer and embedded in the PTFE functional membrane layer.

[0010] In a preferred embodiment, both the top layer and the bottom layer are provided with closed-fitting edges, which are fixed to the edges of the top layer and the bottom layer by high-frequency hot pressing.

[0011] In a preferred embodiment, the reinforcing fiber bundle is aramid fiber or high-strength polyester fiber, and the reinforcing fiber bundle is distributed in an array dot matrix pattern.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. This utility model greatly increases the surface tension of water by applying a nano-level three-proof finishing agent coating to the surface of the fabric. This causes water droplets to form beads and roll off like water droplets on a lotus leaf when they fall onto the fabric surface, making it difficult to wet and penetrate instantly. Then, the water under residual pressure is completely blocked by the micropores of the PTFE functional membrane through the size repulsion effect, thereby effectively preventing water from penetrating.

[0014] 2. The moisture-wicking and quick-drying zone at the bottom layer generates a capillary effect to quickly absorb and diffuse the moisture. The water vapor formed by evaporation, driven by the concentration difference, will pass through the micropores of the unblocked PTFE functional membrane layer and be smoothly discharged to the outside, giving the fabric excellent waterproof and breathable functions, effectively improving the fabric's super durability and wearing comfort. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a PTFE membrane composite nylon fabric provided by this utility model.

[0016] Figure 2 An exploded cross-sectional view of a PTFE membrane composite nylon fabric provided for this utility model.

[0017] Figure 3 A schematic diagram of the surface layer, first adhesive layer and reinforcing fiber bundle weaving structure of a PTFE membrane composite nylon fabric provided by this utility model.

[0018] Figure 4 A schematic diagram of the surface layer, bottom layer, and closed-edge pressing structure of a PTFE membrane composite nylon fabric provided by this utility model.

[0019] Legend:

[0020] 11. Top layer; 12. First adhesive layer; 13. PTFE functional film layer; 14. Second adhesive layer; 15. Bottom layer; 16. Reinforcing fiber bundle; 17. Closed-end pressed edge. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] like Figure 1-3 As shown, this utility model provides a technical solution: a PTFE membrane composite nylon fabric, comprising: a surface layer 11, a first adhesive layer 12, a PTFE functional film layer 13, a second adhesive layer 14, and a bottom layer 15. The surface layer 11, the first adhesive layer 12, the PTFE functional film layer 13, the second adhesive layer 14, and the bottom layer 15 are stacked sequentially from top to bottom. The surface layer 11 is an outer layer woven from nylon fibers, the bottom layer 15 is an inner layer woven from nylon fibers, the PTFE functional film layer 13 is a microporous polytetrafluoroethylene film formed by biaxial stretching, and the first adhesive layer 12... The second adhesive layer 14 is a hot melt adhesive web film. The melting points of the first adhesive layer 12 and the second adhesive layer 14 are lower than the melting points of the nylon fibers of the surface layer 11 and the bottom layer 15. The nylon fibers of the surface layer 11 are treated with water repellency. A nano-level three-proof finishing agent coating is formed on the surface of the surface layer 11. The fabric structure of the surface layer 11 and the bottom layer 15 is plain weave. The warp and weft density of the surface layer 11 is greater than that of the bottom layer 15. A moisture-wicking and quick-drying fiber blended area is provided on the inner surface of the bottom layer 15. The moisture-wicking and quick-drying fiber blended area on the inner side of the bottom layer 15 is composed of nylon fibers and polypropylene fibers interwoven.

[0024] In this embodiment, the nylon fibers of the surface layer 11 are treated with a water-repellent finish. After weaving, the surface layer 11 undergoes padding and baking treatment, resulting in a nano-level three-proof coating on its surface. This gives the surface layer 11 excellent water-repellent properties, thereby improving the fabric's water-repellent, oil-repellent, and stain-repellent properties. The plain weave design of the surface layer 11 and the bottom layer 15, along with the fact that the warp and weft density of the surface layer 11 is greater than that of the bottom layer 15, effectively makes the surface layer 11 denser and more wear-resistant, while the bottom layer 15 is relatively soft and comfortable, improving the fabric's performance. The moisture-wicking and quick-drying fiber blended area on the inner side of the bottom layer 15 can quickly absorb moisture from the skin surface and diffuse it to a larger area for evaporation using the capillary effect of the fibers, keeping the skin dry. This allows the fabric to wick away sweat from the skin surface more quickly, improving wearing comfort.

[0025] Example 2

[0026] like Figure 1-4 As shown, a reinforcing fiber bundle 16 is provided between the surface layer 11 and the first adhesive layer 12. One end of the reinforcing fiber bundle 16 penetrates the surface layer 11 and the first adhesive layer 12 and is embedded in the surface of the PTFE functional film layer 13. A closed pressing edge 17 is provided at the edge of both the surface layer 11 and the bottom layer 15. The closed pressing edge 17 is fixed at the edge position of the surface layer 11 and the bottom layer 15 by high-frequency hot pressing. The reinforcing fiber bundle 16 is aramid fiber or high-strength polyester fiber, and the reinforcing fiber bundle 16 is distributed in an array dot matrix pattern.

[0027] In this embodiment, the reinforcing fiber bundles 16 between the surface layer 11 and the PTFE functional film layer 13 can form a rivet-like anchoring effect, greatly enhancing the peel strength between the reinforcing fiber bundles 16 and the surface layer 11. The closed pressing edge 17 can be effectively sealed by the high-frequency hot pressing process of the closed pressing edge 17, thereby preventing edge delamination and allowing the surface layer 11 and the bottom layer 15 to be directly fused together, completely enclosing the first adhesive layer 12, the PTFE functional film layer 13 and the second adhesive layer 14, effectively blocking moisture and dust from entering from the edges, while improving the product's aesthetics and durability. The reinforced fiber bundles 16 are designed with a dot matrix distribution, which can ensure the reinforcement effect without excessively increasing the weight and stiffness of the fabric.

[0028] Working principle:

[0029] like Figure 1-4 As shown, during use, the nano-level three-proof finishing agent coating on the surface of the top layer 11 greatly increases the surface tension of water, causing water droplets to form beads and roll off like water falling on a lotus leaf when they fall onto the fabric surface, making it difficult to wet and penetrate instantly. Then, the water under residual pressure is completely blocked by the micropores of the PTFE functional membrane layer 13 through the size repulsion effect, thus effectively preventing water from penetrating. Then, the sweat produced by the human body is first absorbed and diffused by the moisture-absorbing and quick-drying area of ​​the bottom layer 15 through the capillary effect. The water vapor formed by evaporation will pass through the unblocked micropores of the PTFE functional membrane layer 13 under the drive of the concentration difference, thus smoothly being discharged to the outside. This gives the fabric excellent waterproof and breathable functions, effectively improving the fabric's super durability and wearing comfort.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A PTFE membrane composite nylon fabric, characterized in that, include: The top layer (11), the first adhesive layer (12), the PTFE functional film layer (13), the second adhesive layer (14), and the bottom layer (15) are stacked sequentially from top to bottom. The top layer (11) is an outer layer woven from nylon fibers, the bottom layer (15) is an inner layer woven from nylon fibers, the PTFE functional film layer (13) is a microporous polytetrafluoroethylene film made by biaxial stretching, the first adhesive layer (12) and the second adhesive layer (14) are hot melt adhesive webs, and the melting points of the first adhesive layer (12) and the second adhesive layer (14) are lower than the melting points of the nylon fibers of the top layer (11) and the bottom layer (15).

2. The PTFE membrane composite nylon fabric according to claim 1, characterized in that: The nylon fibers of the surface layer (11) are treated with water-repellent properties, and a nano-level three-proof finishing agent coating is formed on the surface of the surface layer (11).

3. The PTFE membrane composite nylon fabric according to claim 1, characterized in that: The fabric structure of the surface layer (11) and the bottom layer (15) is plain weave, and the warp and weft density of the surface layer (11) is greater than that of the bottom layer (15).

4. The PTFE membrane composite nylon fabric according to claim 1, characterized in that: The inner surface of the bottom layer (15) is provided with a moisture-absorbing and quick-drying fiber blended area, which is composed of nylon fiber and polypropylene fiber interwoven.

5. The PTFE membrane composite nylon fabric according to claim 1, characterized in that: A reinforcing fiber bundle (16) is disposed between the surface layer (11) and the first adhesive layer (12), and one end of the reinforcing fiber bundle (16) penetrates through the surface layer (11) and the first adhesive layer (12) and is embedded in the surface of the PTFE functional membrane layer (13).

6. The PTFE membrane composite nylon fabric according to claim 1, characterized in that: The edges of the surface layer (11) and the bottom layer (15) are provided with closed pressing edges (17), which are fixed to the edge positions of the surface layer (11) and the bottom layer (15) by high-frequency hot pressing.

7. The PTFE membrane composite nylon fabric according to claim 5, characterized in that: The reinforcing fiber bundle (16) is aramid fiber or high-strength polyester fiber, and the reinforcing fiber bundle (16) is designed in a distributed array form.

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