Agricultural nonwoven fabric

Abstract

The utility model relates to the field of non - woven fabric technology discloses an agricultural non - woven fabric, two surface layers are fixedly connected with two intermediate reinforcing layers between two surface layers, the inner layer is fixedly connected between two intermediate reinforcing layers, the surface layer is composed of polypropylene staple fiber, polyester staple fiber and polyethylene filament, the polyester staple fiber in the surface layer is distributed in the most outside, the polypropylene staple fiber fills the gap, the polyethylene filament is horizontally interwoven in the net shape, the intermediate reinforcing layer is composed of polyethylene filament and polyester staple fiber, in the intermediate reinforcing layer, the polyethylene filament is in the warp and weft staggered net shape structure. The polyester staple fiber and coating of surface layer promote the anti - stability, the net shape structure of intermediate reinforcing layer and the winding fiber enhance the tensile tear - resistance, the inner layer gives consideration to the ventilation and stability, simultaneously, the surface layer and intermediate reinforcing layer and the inner layer are combined through needle - punching process, can let each layer be firm, promote the anti - stab and tensile performance, can satisfy the agricultural production demand better.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric technology, and in particular to an agricultural nonwoven fabric. Background Technology

[0002] Non-woven fabric is a cloth-like material made of fibers such as polyester and polypropylene through bonding, hot pressing and other processes. In agricultural production, it can replace plastic film and be used to cover farmland to keep warm and moist, prevent weeds, allow air and light to pass through, and protect seedlings from frost damage and pests.

[0003] Existing agricultural nonwoven fabrics are widely used in vegetable and flower planting and seedling cultivation. However, due to their processing technology, existing agricultural nonwoven fabrics have insufficient tensile strength and puncture resistance. If there are stones or branches in the ground, or if farm tools come into contact with them during cultivation, they can easily be punctured. Once a hole appears, the heat preservation and moisture retention effect will be poor, and weeds can easily grow out of the hole. In addition, when the wind blows, the fabric is easily deformed or even torn, requiring repeated repairs. If it is used to cover crops, the pulling may also damage the seedlings. Utility Model Content

[0004] The purpose of this invention is to provide an agricultural nonwoven fabric that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An agricultural nonwoven fabric includes two outer layers, two intermediate reinforcing layers fixedly connected between the two outer layers, and an inner layer fixedly connected between the two intermediate reinforcing layers. The outer layers are composed of polypropylene short fibers, polyester short fibers, and polyethylene filaments. The polyester short fibers are distributed on the outermost side, filling the gaps, and the polyethylene filaments are interwoven in a mesh-like pattern. The intermediate reinforcing layers are composed of polyethylene filaments and polyester short fibers. In the intermediate reinforcing layers, the polyethylene filaments form a warp-weft interwoven mesh structure, and the polyester short fibers are wound inside the mesh structure of the polyethylene filaments, forming a three-dimensional support skeleton. The winding of the polyester short fibers enhances the node strength, synergistically improving the overall tensile and tear resistance. The inner layer is composed of polypropylene short fibers and polyethylene filaments. In the inner layer, the polypropylene short fibers form a fluffy fibrous pile layer, and the polyethylene filaments are longitudinally distributed on the fibrous pile layer. The fluffy polypropylene short fibers form a breathable pile layer, and the longitudinal polyethylene filaments enhance tensile strength. The combination of the two layers achieves both high breathability and structural stability.

[0007] As a further preferred embodiment of this utility model, the thickness of the surface layer is 0.05-0.1 mm.

[0008] As a further preferred embodiment of this utility model, the thickness of the intermediate reinforcing layer is 0.1-0.2 mm.

[0009] As a further preferred embodiment of this utility model, the thickness of the inner layer is 0.05-0.1 mm.

[0010] As a further preferred embodiment of this utility model, the surface layer, intermediate reinforcing layer and inner layer are interconnected by needle punching to form an integral structure. Needle punching connects the fibers of each layer, enhances the interlayer bonding force to prevent peeling, forms an integral stress-bearing structure, improves tensile strength and puncture resistance, and at the same time retains interconnected pores to ensure breathability.

[0011] As a further preferred embodiment of this utility model, the surface layer is sprayed with a water-based polyurethane coating. Spraying a water-based polyurethane coating with a thickness of ≤5μm onto the surface layer can improve the puncture resistance and weather resistance of the surface layer without clogging the pores, thereby extending the service life of the entire nonwoven fabric.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this invention, the polyester short fibers and coating on the surface enhance puncture resistance, the mesh structure and wound fibers in the middle reinforcing layer enhance tensile and tear resistance, and the inner layer balances breathability and stability. At the same time, the surface, middle reinforcing layer and inner layer are bonded together by needle punching, which makes the layers firmly bonded, improves puncture resistance and tensile strength, and better meets the needs of agricultural production. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the layered structure of the main body of this utility model.

[0015] In the diagram: 1. Surface layer; 2. Intermediate reinforcing layer; 3. Inner layer. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] like Figure 1As shown, this utility model provides an agricultural nonwoven fabric comprising two surface layers 1, two intermediate reinforcing layers 2 fixedly connected between the two surface layers 1, and an inner layer 3 fixedly connected between the two intermediate reinforcing layers 2. The surface layer 1 is composed of polypropylene short fibers, polyester short fibers, and polyethylene filaments. The polyester short fibers in the surface layer 1 are distributed on the outermost side, the polypropylene short fibers fill the gaps, and the polyethylene filaments are interwoven in a mesh-like pattern. The intermediate reinforcing layer 2 is composed of polyethylene filaments and polyester short fibers. In the intermediate reinforcing layer 2, the polyethylene filaments are in a warp and weft interwoven mesh structure, and the polyester short fibers are wound inside the mesh structure of the polyethylene filaments, forming a three-dimensional support skeleton. The winding of the polyester short fibers enhances the node firmness, which can synergistically improve the overall tensile and tear resistance. The inner layer 3 is composed of polypropylene short fibers and polyethylene filaments. In the inner layer 3, the polypropylene short fibers are in a fluffy fibrous pile layer, and the polyethylene filaments are longitudinally distributed on the fibrous pile layer. The fluffy polypropylene short fibers form a breathable pile layer, and the longitudinal polyethylene filaments enhance the tensile strength. The combination of the two ensures both high breathability and structural stability.

[0018] The thickness of the outer layer 1 is 0.05-0.1mm, the thickness of the middle reinforcing layer 2 is 0.1-0.2mm, and the thickness of the inner layer 3 is 0.05-0.1mm. The outer layer 1, the middle reinforcing layer 2, and the inner layer 3 are interconnected by a needle punching process to form an integral structure. The needle punching process connects the fibers of each layer, enhances the interlayer bonding force and prevents peeling, forms an integral load-bearing structure, and improves tensile strength and puncture resistance. At the same time, it retains interconnected pores to ensure breathability. The surface of the outer layer 1 is sprayed with a water-based polyurethane coating. Spraying the surface of the outer layer 1 with a water-based polyurethane coating with a thickness of ≤5μm can improve the puncture resistance and weather resistance of the outer layer 1 without clogging the pores on the surface of the outer layer 1, thereby increasing the service life of the entire nonwoven fabric.

[0019] It should be noted that this utility model is an agricultural nonwoven fabric, which is composed of a surface layer 1, a middle reinforcing layer 2, and an inner layer 3. Two surface layers 1 sandwich two middle reinforcing layers 2, and the inner layer 3 is located between the middle reinforcing layers 2. The fibers of each layer are interlocked through a needle punching process. The surface layer 1 is made of polypropylene short fibers, polyester short fibers, and polyethylene filaments, with a thickness of 0.05-0.1 mm. The polyester short fibers are on the outermost side, and the surface is coated with a water-based polyurethane coating of ≤5 μm to enhance puncture resistance. The polypropylene short fibers fill the gaps. Ethylene filaments are interwoven laterally to form a web, enhancing the stability of the surface structure. The intermediate reinforcing layer 2, with a thickness of 0.1-0.2mm, is composed of polyethylene filaments and polyester short fibers. The polyethylene filaments are interwoven in warp and weft to form a web, and the polyester short fibers are wound inside the web to form a three-dimensional support skeleton, which can reinforce the nodes and synergistically improve the overall tensile and tear resistance. Finally, the inner layer 3, with a thickness of 0.05-0.1mm, has polypropylene short fibers forming a fluffy pile layer to ensure breathability, while the longitudinally distributed polyethylene filaments enhance tensile strength, balancing breathability and structural stability.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An agricultural nonwoven fabric, characterized in that: It includes two surface layers (1), two intermediate reinforcing layers (2) are fixedly connected between the two surface layers (1), and an inner layer (3) is fixedly connected between the two intermediate reinforcing layers (2). The surface layer (1) is composed of polypropylene short fibers, polyester short fibers and polyethylene filaments. The polyester short fibers in the surface layer (1) are distributed on the outermost side, the polypropylene short fibers fill the gaps, and the polyethylene filaments are interwoven in a mesh pattern. The intermediate reinforcing layer (2) is composed of polyethylene filaments and polyester short fibers. In the intermediate reinforcing layer (2), the polyethylene filaments are in a warp and weft interlaced mesh structure, and the polyester short fibers are wrapped inside the polyethylene filaments in the mesh structure. The inner layer (3) is composed of polypropylene short fibers and polyethylene filaments. In the inner layer (3), the polypropylene short fibers are in the form of a fluffy fiber pile layer, and the polyethylene filaments are longitudinally distributed on the fiber pile layer.

2. The agricultural nonwoven fabric according to claim 1, characterized in that: The thickness of the surface layer (1) is 0.05-0.1 mm.

3. The agricultural nonwoven fabric according to claim 1, characterized in that: The thickness of the intermediate reinforcing layer (2) is 0.1-0.2 mm.

4. The agricultural nonwoven fabric according to claim 1, characterized in that: The thickness of the inner layer (3) is 0.05-0.1 mm.

5. The agricultural nonwoven fabric according to claim 1, characterized in that: The surface layer (1), the intermediate reinforcing layer (2), and the inner layer (3) are interconnected by needle punching to form an integral structure.

6. The agricultural nonwoven fabric according to claim 1, characterized in that: The surface of the surface layer (1) is coated with a water-based polyurethane coating.

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