Porous high-strength composite needle-punched non-woven fabric

Abstract

The utility model discloses a porous high-strength composite needle-punched non-woven fabric which comprises a non-woven fabric body, a plurality of air holes are formed in the non-woven fabric body in the thickness direction of the non-woven fabric body, the non-woven fabric body comprises a top layer, a bottom layer and a flexible tensile net layer clamped between the top layer and the bottom layer, and flexible reinforcing strips are further distributed on the flexible tensile net layer. The air holes formed in the non-woven fabric can improve the air permeability of the non-woven fabric, and the riding comfort of the non-woven fabric automobile seat cover is improved; the strength of the non-woven fabric can be improved through the flexible tensile net layer, and the service life of the non-woven fabric automobile seat cover is prolonged; by arranging the flexible reinforcing strips, the lightness of the non-woven fabric can be further improved, and then the firmness of the non-woven fabric automobile seat cover is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of non-woven fabrics, and particularly relates to a porous high-strength composite needle-punched non-woven fabric. Background Art

[0002] Non-woven fabrics, also known as non-woven fabrics, are made by arranging fibers in a directional or random manner to form a fiber mesh structure, and then reinforced by mechanical, thermal bonding or chemical methods. In the automotive industry, non-woven fabrics are often used in car interiors, such as car seat covers, ceiling interiors, carpet fabrics, etc.

[0003] When non-woven fabrics are used as car seat covers, the car seat covers need to withstand friction, extrusion and pulling in daily use, so the non-woven fabrics are required to have higher strength; and the car seat covers also need to take into account riding comfort, so the non-woven fabrics are required to have better breathability.

[0004] Therefore, how to make non-woven fabrics have high strength and good air permeability is an urgent problem to be solved. Utility Model Content

[0005] The purpose of the utility model is to overcome the defects in the prior art and provide a porous high-strength composite needle-punched non-woven fabric, thereby improving the strength and air permeability of the non-woven fabric.

[0006] To achieve the above purpose, the specific technical scheme of the porous high-strength composite needle-punched non-woven fabric of the utility model is as follows:

[0007] A porous high-strength composite needle-punched non-woven fabric comprises a non-woven fabric body, wherein the non-woven fabric body is provided with a plurality of air holes along the thickness direction thereof, the non-woven fabric body comprises a top layer, a bottom layer and a flexible tensile mesh layer sandwiched between the top layer and the bottom layer, and flexible reinforcing strips are also distributed on the flexible tensile mesh layer.

[0008] Preferably, in order to improve the strength of the flexible tensile mesh layer, the flexible tensile mesh layer is a metal fiber woven mesh or a carbon fiber woven mesh.

[0009] Preferably, in order to increase the number of flexible reinforcement strips and improve the strength of the non-woven fabric, flexible reinforcement strips are distributed on both sides of the flexible tensile mesh layer.

[0010] Preferably, in order to expand the distribution range and uniformity of the flexible reinforcing strips inside the non-woven fabric and improve the strength of the non-woven fabric, the flexible reinforcing strips are distributed in a mesh shape.

[0011] Preferably, in order to improve the surface flatness of the non-woven fabric, the opposite sides of the top layer and the bottom layer are provided with extrusion grooves for accommodating the flexible reinforcement strips.

[0012] Preferably, in order to improve the air permeability of the non-woven fabric and simultaneously improve the strength of the non-woven fabric at the air holes, the number of the air holes is multiple, and the air holes are spaced apart along the extension direction of the flexible reinforcement strip, and the air holes are arranged to pass through the flexible reinforcement strip.

[0013] Preferably, in order to improve the stability of the overall structure of the non-woven fabric and to improve the strength of the non-woven fabric, the flexible anti-tensile mesh layer is fixedly connected to the top layer and the bottom layer through an adhesive layer, the flexible reinforcement strip is fixedly connected to the inner wall of the extrusion groove through an adhesive layer, and the adhesive layer also covers the inner wall of the air vent.

[0014] Preferably, in order to slow down the aging speed of the non-woven fabric and ensure the strength of the non-woven fabric, the side of the top layer facing away from the flexible tensile mesh layer is also coated with an anti-ultraviolet layer.

[0015] The porous high-strength composite needle-punched non-woven fabric of the utility model has the following advantages: the air holes opened in the non-woven fabric can improve the air permeability of the non-woven fabric, and improve the riding comfort of the non-woven fabric car seat cover; the strength of the non-woven fabric can be improved by the flexible tensile mesh layer, and the service life of the non-woven fabric car seat cover can be extended; the setting of the flexible reinforcement strip can further improve the lightness of the non-woven fabric, and thus improve the firmness of the non-woven fabric car seat cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the non-woven fabric of the utility model;

[0017] Figure 2 for Figure 1 A magnified view of part A;

[0018] Figure 3 It is a structural schematic diagram of the extrusion groove of the utility model;

[0019] Markings in the figure: 1. Non-woven fabric body; 2. Anti-ultraviolet layer; 3. Flexible reinforcement strip; 4. Breathable hole; 5. Bonding; 101. Top layer; 102. Flexible anti-tension mesh layer; 103. Bottom layer; 104. Extrusion groove. DETAILED DESCRIPTION

[0020] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0021] The terms "top surface", "bottom surface" and "underside" are based on the normal use state of the non-woven fabric and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0022] like Figure 1 As shown, a porous high-strength composite needle-punched non-woven fabric includes a non-woven fabric body 1, and the non-woven fabric body 1 has a plurality of air holes 4 along its thickness direction. The non-woven fabric body 1 includes a top layer 101, a bottom layer 103 and a flexible tensile mesh layer 102 sandwiched between the top layer 101 and the bottom layer 103, and flexible reinforcing strips 3 are also distributed on the flexible tensile mesh layer 102.

[0023] In the above-mentioned non-woven fabric, the setting of the air holes 4 allows air to pass through the non-woven fabric, thereby improving the air permeability of the non-woven fabric. After the non-woven fabric is made into a car seat cover, its air permeability can be improved accordingly, thereby improving the riding comfort of passengers; the flexible anti-tensile mesh layer 102 sandwiched between the top layer 101 and the bottom layer 103 can be used as a built-in skeleton of the non-woven fabric, while maintaining the soft characteristics of the non-woven fabric, providing the non-woven fabric with stronger tensile resistance, thereby improving the strength of the non-woven fabric; the flexible reinforcement strip 3 is arranged on the flexible anti-tensile mesh layer 102, which can be used to improve the strength of the flexible anti-tensile mesh layer 102, thereby further improving the strength of the non-woven fabric, and the car seat cover made using the non-woven fabric can have better firmness, thereby extending the service life of the car seat cover.

[0024] A further improvement is that the flexible tensile mesh layer 102 is a metal fiber woven mesh or a carbon fiber woven mesh. The metal fiber can be a stainless steel fiber. Both metal fiber and carbon fiber have the characteristics of high strength, light weight, and corrosion resistance. They can ensure the strength of the flexible tensile mesh layer 102 while maintaining its softness and lightness. While improving the strength of the non-woven fabric, they can also keep the non-woven fabric light and soft.

[0025] Moreover, the metal fiber and the carbon fiber have super strong electrical and thermal conductivity, so that the flexible tensile mesh layer 102 can reduce the accumulation of electric charges on the non-woven fabric, reduce the probability of static electricity generated by the non-woven fabric, and further reduce the probability of fire of the non-woven fabric. When the non-woven fabric is used as a car seat cover, the safety of the vehicle can be greatly improved; and in hot weather, the flexible tensile mesh layer 102 can evenly conduct the heat of the seat cover and the human body contact parts to all parts of the seat cover, and then evenly dissipate it, which can effectively reduce the temperature of the seat cover and the human body contact parts, and improve the comfort of riding the seat cover in hot weather.

[0026] A further improvement is, Figure 2 As shown, flexible reinforcing strips 3 are distributed on both sides of the flexible tensile mesh layer 102. In the above non-woven fabric, the flexible reinforcing strips 3 can be woven with fibers of the same material as the flexible tensile mesh layer 102, and the fibers of the flexible tensile mesh layer 102 and the fibers of the flexible reinforcing strips 3 can be woven together to improve the strength of the connection between the two, so that the strength of the flexible tensile mesh layer 102 can be improved by the flexible reinforcing strips 3, thereby further improving the strength of the non-woven fabric.

[0027] A further improvement is, Figure 1 and 2 As shown, the flexible reinforcement strips 3 are distributed in a mesh shape. The flexible reinforcement strips 3 distributed in a mesh shape are more evenly distributed, have a wider effective coverage area, and can effectively improve the strength of the flexible anti-stretching mesh layer 102.

[0028] A further improvement is, Figure 2 As shown, the opposite sides of the top layer 101 and the bottom layer 103 are provided with extrusion grooves 104 for accommodating the flexible reinforcing strips 3. In the above non-woven fabric, the extrusion grooves 104 are hot-pressed on the top layer 101 and the bottom layer 103 by rollers. By this hot-pressing method, the fiber structures of the top layer 101 and the bottom layer 103 at the extrusion grooves 104 can be made tighter, which can effectively ensure the strength of the non-woven fabric; the extrusion grooves 104 can be used to accommodate the flexible reinforcing strips 3, so that the surface of the non-woven fabric will not be bulged by the reinforcing strips 3, making the surface of the non-woven fabric smoother, thereby improving the riding comfort of the seat cover made of non-woven fabric.

[0029] A further improvement is, Figure 2 As shown, there are multiple air holes 4, each of which is spaced apart along the extension direction of the flexible reinforcing strip 3, and the air holes 4 are set through the flexible reinforcing strip 3. In the above non-woven fabric, the flexible reinforcing strip 3 is set inside the extrusion groove 104, so the air holes 4 penetrate the reinforcing strip 3 and the bottom wall of the extrusion groove 104 at the same time. Since the fiber structure of the non-woven fabric at the bottom wall of the extrusion groove 104 is more compact after being extruded, the air holes 4 are provided here, which can reduce the probability of loose fibers at the air holes 4, thereby reducing the probability of damage to the non-woven fabric at the air holes; the air holes penetrate the flexible reinforcing strip 3 and the flexible tensile mesh layer 102, which also takes into account that the structures of the two are relatively stable, thereby reducing the probability of damage to the non-woven fabric due to the opening of the holes, and in this way, the flexible reinforcing strip 3 and the flexible tensile mesh layer 102 can be exposed to the outside, which is convenient for heat conduction and dissipation, and improves the comfort of using the seat cover in hot weather.

[0030] A further improvement is, Figure 2 As shown, the flexible anti-pull mesh layer 102 is fixedly connected to both the top layer 101 and the bottom layer 103 through the adhesive layer 5, the flexible reinforcing strip 3 is fixedly connected to the inner wall of the extrusion groove 104 through the adhesive layer 5, and the adhesive layer 5 also covers the inner wall of the air hole 4. The adhesive layer 5 can be a water-based acrylic emulsion adhesive layer, and the adhesive layer 5 can realize the fixed connection between the flexible reinforcing strip 3 and the flexible anti-pull mesh layer 102 and the top layer 101 and the bottom layer 103, thereby improving the firmness of the non-woven fabric, and forming a complete non-woven fabric body 1 between the layers of the non-woven fabric, thereby improving the strength of the non-woven fabric; at the same time, after the adhesive layer 5 is formed into a film and covers the inner wall of the air hole 4, it can achieve the adhesion effect on the fibers at the air hole 4, prevent the fibers at the air hole 4 from loosening, and improve the overall strength of the non-woven fabric.

[0031] A further improvement is, Figure 1 and 2 As shown, the side of the top layer 101 away from the flexible tensile mesh layer 102 is also coated with an anti-ultraviolet layer 2. As a car seat cover, the non-woven fabric needs to be frequently exposed to sunlight. Long-term ultraviolet radiation will accelerate the aging speed of the non-woven fabric and reduce the strength of the non-woven fabric; for this reason, the anti-ultraviolet layer 2 is coated on the top layer 101. When in use, the layer is located on the surface of the non-woven fabric; the anti-ultraviolet layer 2 can be a silicone coating layer, which can be used to absorb or reflect ultraviolet rays, calmly reduce the exposure of ultraviolet rays to the non-woven fabric, thereby ensuring that the non-woven fabric has a durable and reliable strength and extending the service life of the non-woven fabric.

[0032] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A porous high-strength composite needle-punched nonwoven fabric, comprising a nonwoven fabric body (1), characterized in that: The nonwoven fabric body (1) is provided with a plurality of air holes (4) along its thickness direction. The nonwoven fabric body (1) comprises a top layer (101), a bottom layer (103) and a flexible anti-tension mesh layer (102) sandwiched between the top layer (101) and the bottom layer (103). Flexible reinforcing strips (3) are also distributed on the flexible anti-tension mesh layer (102).

2. The porous high-strength composite needle-punched nonwoven fabric according to claim 1, characterized in that: The flexible tensile mesh layer (102) is a metal fiber woven mesh or a carbon fiber woven mesh.

3. The porous high-strength composite needle-punched nonwoven fabric according to claim 2, characterized in that: Flexible reinforcement strips (3) are distributed on both sides of the flexible tensile mesh layer (102).

4. The porous high-strength composite needle-punched nonwoven fabric according to claim 3, characterized in that: The flexible reinforcement strips (3) are distributed in a mesh shape.

5. The porous high-strength composite needle-punched nonwoven fabric according to claim 3, characterized in that: The opposite sides of the top layer (101) and the bottom layer (103) are both provided with extrusion grooves (104) for accommodating the flexible reinforcement strip (3).

6. The porous high-strength composite needle-punched nonwoven fabric according to claim 5, characterized in that: The number of the ventilation holes (4) is multiple, and the ventilation holes (4) are distributed at intervals along the extension direction of the flexible reinforcement strip (3), and the ventilation holes (4) are arranged to penetrate the flexible reinforcement strip (3).

7. The porous high-strength composite needle-punched nonwoven fabric according to claim 5, characterized in that: The flexible tensile mesh layer (102) is fixedly connected to the top layer (101) and the bottom layer (103) via an adhesive layer (5); the flexible reinforcement strip (3) is fixedly connected to the inner wall of the extrusion groove (104) via an adhesive layer (5); and the adhesive layer (5) also covers the inner wall of the air vent (4).

8. The porous high-strength composite needle-punched nonwoven fabric according to claim 1, characterized in that: The side of the top layer (101) facing away from the flexible tensile mesh layer (102) is also coated with an anti-ultraviolet layer (2).

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