A laminated antistatic textile fabric

Abstract

The utility model belongs to antistatic textile field, specifically is a kind of laminated antistatic textile, including the outer fabric layer, intermediate conductive layer and inner fabric layer that are sequentially laminated, wherein the intermediate conductive layer is formed grid structure by conductive fibre knitting, and the outer fabric layer, intermediate conductive layer and inner fabric layer are fixedly connected by the conductive adhesive point of distribution setting between, and the conductive adhesive point penetrates three layers and constitutes continuous conductive path;By the intermediate conductive layer of grid structure of conductive fibre knitting is placed between outer fabric layer and inner fabric layer, and utilize the conductive adhesive point to penetrate three layers and form conductive path, make conductive layer receive inside and outside double-layer protection, avoid metal fibre direct exposure in friction interface, grid structure disperses mechanical stress, significantly reduce the risk of fibre breakage caused by long-term bending, and the conductive adhesive point realizes interlayer consolidation and charge conduction simultaneously, solve the interlayer peeling problem after repeated friction.

Description

Technical Field

[0001] This utility model relates to the field of antistatic textile fabrics, specifically a layered antistatic textile fabric. Background Technology

[0002] Antistatic textile fabrics are mainly used in high-static-risk scenarios such as antistatic work clothes in the electronics manufacturing industry, sterile protective clothing for medical surgery, explosion-proof work clothes in the petrochemical industry, and special anti-radiation clothing. Through physical structural innovation, they achieve synergistic optimization of long-lasting static dissipation, wearing comfort, and durability.

[0003] In the prior art, such as in publication number CN207509885U, a composite fabric for automotive seats is disclosed. It comprises a base fabric layer, a health care layer, and an antistatic layer, layered sequentially from top to bottom. The base fabric layer is a peach skin fleece layer; the health care layer is a cotton fabric layer coated with tourmaline powder; the antistatic layer is woven from antistatic fiber yarn, which includes spandex fibers and metal fibers, with the metal fibers tightly wrapped around the outer circumference of the spandex fibers along their axial direction; anti-slip blocks are spaced apart on the upper surface of the base fabric layer and / or the lower surface of the antistatic layer. This composite fabric is moisture-wicking, breathable, smooth, soft, warm, and durable, and also possesses additional functions such as health care, wellness, and antistatic properties. It can meet consumers' increasingly multifunctional demands for textile fabrics used in automotive seats and has excellent market prospects.

[0004] While the aforementioned patent achieves antistatic and durable effects through the layering of multiple fabrics, the antistatic structure is fragile. Its antistatic layer relies on a yarn structure where metal fibers are wrapped around spandex, with the metal fibers directly exposed to the friction interface. Under long-term pressure and bending, the metal fibers are prone to breakage or detachment, leading to a rapid decline in antistatic function. Furthermore, this solution only uses pressing, bonding, and sewing to composite the layers, without establishing a functional conductive path, resulting in inefficient charge conduction. Static electricity must penetrate the insulating health layer to reach the antistatic layer, resulting in high interface resistance. Moreover, the layers are easily peeled apart, lacking structural conductive points, and easily separate after repeated friction. Therefore, to address these issues, a layered antistatic textile fabric is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, such as the fragility of antistatic structures, where the antistatic layer relies on a yarn structure of metal fibers wrapped around spandex with the metal fibers directly exposed to the friction interface, the metal fibers are prone to breakage or detachment under long-term pressure and bending conditions, leading to a rapid decline in antistatic function. Furthermore, this solution relies solely on pressing, bonding, and sewing to composite the layers, failing to establish a functional conductive path, resulting in inefficient charge conduction. Static electricity must penetrate the insulating health layer to reach the antistatic layer, leading to high interface resistance. Additionally, the layers are easily peeled off, lacking structural conductive points, and prone to separation after repeated friction. Therefore, this invention proposes a layered antistatic textile fabric.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The layered antistatic textile fabric of this utility model includes an outer fabric layer, a middle conductive layer and an inner fabric layer stacked in sequence. The middle conductive layer is woven from conductive fibers to form a mesh structure. The outer fabric layer, the middle conductive layer and the inner fabric layer are fixedly connected by distributed conductive adhesive points. The conductive adhesive points penetrate the three layers and form a continuous conductive path.

[0007] Preferably, the mesh structure of the intermediate conductive layer is a rhomboid, hexagonal, or wavy continuous mesh topology.

[0008] Preferably, the material of the conductive adhesive point is a hot melt adhesive mixed with conductive particles.

[0009] Preferably, the conductive fibers of the intermediate conductive layer extend in a direction parallel to the weft direction of the outer fabric layer.

[0010] Preferably, the distribution of the conductive adhesive points coincides with the grid nodes of the intermediate conductive layer.

[0011] Preferably, the peaks and troughs of the wavy continuous mesh topology are spaced at equal intervals.

[0012] The advantages of this utility model are:

[0013] 1. This utility model places the middle conductive layer, which is woven into a grid structure of conductive fibers, between the outer and inner fabric layers, and uses conductive adhesive points to form a conductive path through the three layers. This provides double protection for the conductive layer, preventing the metal fibers from being directly exposed to the friction interface. The grid structure disperses mechanical stress, significantly reducing the risk of fiber breakage caused by long-term bending. At the same time, the conductive adhesive points simultaneously achieve interlayer consolidation and charge conduction, solving the problem of interlayer peeling after repeated friction.

[0014] 2. This utility model constructs the shortest conductive path from the inner / outer layer to the conductive layer by vertically penetrating the three layers through conductive adhesive points and directly connecting the grid nodes of the middle conductive layer. Charge can quickly dissipate through the grid network of the middle conductive layer without penetrating the insulating layer, thereby reducing the interface resistance. Furthermore, the overlap between the grid nodes and adhesive points further optimizes the charge transfer efficiency and completely eliminates the electrostatic hazards caused by interlayer charge accumulation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the outer fabric layer and the middle conductive layer of this utility model;

[0018] Figure 3 This is a schematic diagram of the intermediate conductive layer and inner fabric layer structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the conductive adhesive point structure of this utility model.

[0020] In the diagram: 1. Outer fabric layer; 2. Middle conductive layer; 3. Inner fabric layer; 4. Conductive adhesive point. 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 scope of protection of the present utility model.

[0022] Please see Figures 1-4 As shown, a layered antistatic textile fabric includes an outer fabric layer 1, a middle conductive layer 2, and an inner fabric layer 3 stacked sequentially. The middle conductive layer 2 is woven from conductive fibers to form a mesh structure. The outer fabric layer 1, the middle conductive layer 2, and the inner fabric layer 3 are fixedly connected by distributed conductive adhesive points 4. The conductive adhesive points 4 penetrate the three layers and form a continuous conductive path.

[0023] During operation, conductive fibers are first woven into a diamond-shaped mesh structure as the intermediate conductive layer 2, with the mesh line width controlled at 0.15mm to ensure charge diffusion efficiency. Then, at the composite interface between the outer fabric layer 1 and the inner fabric layer 3, hot melt adhesive mixed with carbon black conductive particles is applied vertically through the three layers using a precision dispensing machine at conductive bonding points 4 with a diameter of 0.5mm. The dispensing position is strictly aligned with the mesh nodes of the intermediate conductive layer 2 for curing. After curing, the conductive bonding points 4 simultaneously achieve physical consolidation and conductive path connection. At the same time, the extension direction of the conductive fibers in the intermediate conductive layer 2 is made parallel to the weft direction of the outer fabric layer 1 to ensure that the conductive fibers and weft yarns deform together when the fabric is bent, thereby reducing stress concentration. After multiple frictions, the conductive bonding points 4 still coincide with the mesh nodes, the transfer time of charge through the conductive bonding points 4 to the intermediate conductive layer 2 is shortened, the interlayer peel strength is higher, and the strength is improved compared to the traditional structure.

[0024] Furthermore, the mesh structure of the intermediate conductive layer 2 is a rhomboid, hexagonal, or wavy continuous mesh topology;

[0025] During operation, the intermediate conductive layer 2 is woven into a diamond-shaped continuous mesh topology or a wavy continuous mesh topology, and the mesh shape is controlled by a CNC loom. This structure allows the charge to diffuse evenly along the mesh path, avoiding local charge accumulation. At the same time, the wavy topology improves the longitudinal bending flexibility of the fabric, solving the problem of discomfort caused by the stiffness of the antistatic layer in traditional fabrics.

[0026] Furthermore, the material of conductive adhesive point 4 is hot melt adhesive mixed with conductive particles;

[0027] During operation, hot melt adhesive mixed with conductive particles is used to form conductive bonding points 4 with a diameter of 0.3-0.8 mm through a dispensing machine. After curing, these points simultaneously penetrate the outer fabric layer 1, the middle conductive layer 2, and the inner fabric layer 3. This material reduces the interlayer contact resistance to 10 ohms. 4 The conductivity is below Ω·cm, and the elastic modulus of the hot melt adhesive matches that of the fabric layer, ensuring that the conductive adhesive point 4 maintains its conductivity even after repeated washing.

[0028] Furthermore, the conductive fibers of the intermediate conductive layer 2 extend in a direction parallel to the weft direction of the outer fabric layer 1.

[0029] During operation, when weaving the intermediate conductive layer 2, the conductive fibers extend in a direction parallel to the weft direction of the outer fabric layer 1. This arrangement allows the conductive fibers and weft to deform synchronously when the fabric is bent, eliminating stress concentration caused by fiber twisting.

[0030] Furthermore, the distribution of conductive bonding points 4 coincides with the grid nodes of the intermediate conductive layer 2;

[0031] During operation, the conductive adhesive point 4 is precisely aligned with the grid node of the intermediate conductive layer 2 using a laser positioning system. Each conductive adhesive point 4 is covered with 3-5 cross-conductive fibers. This design allows the charge to travel directly from the outer / inner layer to the grid node through the adhesive point, improving the efficiency of interface charge transfer. In addition, the high fiber density at the node strengthens the mechanical anchoring force of the conductive adhesive point 4.

[0032] Furthermore, the peaks and troughs of the wavy continuous mesh topology are spaced at equal intervals.

[0033] During operation, the distance between the crest and trough of the wave-shaped intermediate conductive layer 2 is set to a constant 2mm, and the movement of the reed teeth of the loom is synchronously controlled by a servo motor. The equidistant structure enables the charge to migrate at a constant speed along the wave path, eliminating local electric field distortion. At the same time, the wave unit evenly distributes the fabric stress, reducing the difference in tensile strength between the warp and weft directions, and significantly improving the fit of the fabric in curved surface applications such as car seats.

[0034] Working principle: When static charge generated by the human body or equipment acts on the outer fabric layer 1 or the inner fabric layer 3, the charge is vertically conducted to the grid nodes of the middle conductive layer 2 through the conductive adhesive points 4 that run through the three layers. Then, it quickly diffuses laterally along the conductive fiber network of the grid structure and is finally dissipated through the metal edging or grounding seam at the edge of the fabric. The overlapping design of the conductive adhesive points 4 and the grid nodes shortens the charge transfer path, while the grid topology of the middle conductive layer 2 avoids local electric field accumulation by optimizing the charge diffusion path. At the same time, the arrangement of conductive fibers parallel to the weft direction of the outer fabric layer 1 ensures uniform stress distribution when the fabric is bent, ensuring that the grid structure maintains a stable conductive path during dynamic use.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A layered antistatic textile fabric, characterized in that: It includes an outer fabric layer (1), a middle conductive layer (2) and an inner fabric layer (3) stacked in sequence. The middle conductive layer (2) is woven from conductive fibers to form a mesh structure. The outer fabric layer (1), the middle conductive layer (2) and the inner fabric layer (3) are fixedly connected by distributed conductive adhesive points (4). The conductive adhesive points (4) penetrate the three layers and form a continuous conductive path.

2. The layered antistatic textile fabric according to claim 1, characterized in that: The mesh structure of the intermediate conductive layer (2) is a rhomboid, hexagonal, or wavy continuous mesh topology.

3. The layered antistatic textile fabric according to claim 1, characterized in that: The conductive adhesive point (4) is made of hot melt adhesive mixed with conductive particles.

4. The layered antistatic textile fabric according to claim 1, characterized in that: The conductive fibers of the intermediate conductive layer (2) extend in a direction parallel to the weft direction of the outer fabric layer (1).

5. The layered antistatic textile fabric according to claim 1, characterized in that: The distribution of the conductive adhesive points (4) coincides with the grid nodes of the intermediate conductive layer (2).

6. The layered antistatic textile fabric according to claim 2, characterized in that: The wave crests and troughs of the wave-shaped continuous mesh topology are spaced at equal intervals.

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