Multilayer non-woven fabric

Abstract

The utility model discloses a multilayer non-woven fabric, which relates to the field of non-woven fabrics, and has the technical scheme that the multilayer non-woven fabric comprises a surface layer and an inner layer, the surface layer consists of first moisture-permeable parts and first moisture-conducting grooves which are alternately arranged at intervals in the transverse direction, and the inner layer consists of second moisture-permeable parts and second moisture-conducting grooves which are alternately arranged at intervals in the longitudinal direction; the density of the bottom surface of the first moisture guide groove is greater than that of the first moisture permeable part; the density of the bottom surface of the second moisture guide groove is greater than that of the second moisture permeable part. When water falls into the first moisture guiding grooves, the water is transmitted in the longitudinal direction along the first moisture guiding grooves, the distribution uniformity of the water in the longitudinal direction is improved, when the water is separated out from the bottom face of the surface layer and falls onto the inner layer, the water falling onto the second moisture guiding grooves is transmitted in the transverse direction along the second moisture guiding grooves, and therefore the moisture is prevented from falling into the inner layer. The transverse distribution uniformity of water is improved, then the water distribution uniformity is improved, the cotton fiber filaments have good heat retention property, and the growth environment of the seeds is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabrics, and more specifically, to a multilayer nonwoven fabric. Background Technology

[0002] Non-woven fabric is a type of fabric formed without spinning or weaving. It is made by arranging short or long textile fibers in a directional or random manner to form a web structure, which is then reinforced by mechanical, thermal, or chemical methods. Non-woven fabric is low in cost, quick to produce, and easy to process, and has a wide range of applications in many fields. When laying greenery, water-permeable and breathable non-woven fabric is placed on ungerminated plant seeds to protect them. At the same time, during irrigation, water can permeate to the ground through the non-woven fabric. However, the irregular droplets of water from sprinkler irrigation can create humidity differences between different areas of the non-woven fabric, resulting in uneven plant growth. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a multilayer nonwoven fabric.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a multilayer nonwoven fabric, comprising a surface layer and an inner layer, wherein the surface layer is composed of a first moisture-permeable portion and a first moisture-guiding groove arranged alternately in the transverse direction, and the inner layer is composed of a second moisture-permeable portion and a second moisture-guiding groove arranged alternately in the longitudinal direction, wherein the density of the bottom surface of the first moisture-guiding groove is greater than the density of the first moisture-permeable portion, and the density of the bottom surface of the second moisture-guiding groove is greater than the density of the second moisture-permeable portion.

[0005] The present invention is further configured such that the cross-section of the second moisture-guiding groove is S-shaped.

[0006] The present invention is further configured such that the arrangement density of the first moisture-guiding groove is greater than that of the second moisture-guiding groove.

[0007] The present invention is further configured such that the depth of the first moisture-guiding groove is less than half the thickness of the first moisture-permeable part.

[0008] The present invention is further configured such that a number of gaskets are fixedly connected to the side of the inner layer away from the outer layer.

[0009] The present invention is further configured such that both the outer layer and the inner layer are made of cotton fibers.

[0010] In summary, this utility model has the following beneficial effects: when water falls into the first moisture-guiding groove, the water will be transferred longitudinally along the first moisture-guiding groove, improving the uniformity of water distribution in the longitudinal direction. When water is released from the bottom of the surface layer and falls onto the inner layer, the water falling onto the second moisture-guiding groove will be transferred laterally along the second moisture-guiding groove, improving the uniformity of water distribution in the lateral direction, thereby improving the uniformity of water distribution. Both the surface layer and the inner layer are made of hydroentangled cotton fibers, which have good heat retention properties, ensuring the growth environment for the seeds. Attached Figure Description

[0011] Figure 1 This is a partial cross-sectional view of the present invention;

[0012] Figure 2 This is a schematic diagram of the structure of this utility model.

[0013] In the diagram: 1. First moisture-permeable section; 2. First moisture-guiding groove; 3. Second moisture-permeable section; 4. Second moisture-guiding groove; 5. Gasket. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0015] Example: A multilayer nonwoven fabric, such as Figure 1 As shown, it includes a surface layer and an inner layer. The surface layer consists of a first moisture-permeable part 1 and a first moisture-guiding groove 2 that are alternately arranged in the horizontal direction. The inner layer consists of a second moisture-permeable part 3 and a second moisture-guiding groove 4 that are alternately arranged in the vertical direction. The density of the bottom surface of the first moisture-guiding groove 2 is greater than the density of the first moisture-permeable part 1, and the density of the bottom surface of the second moisture-guiding groove 4 is greater than the density of the second moisture-permeable part 3.

[0016] Specifically, a first moisture-guiding groove 2 is formed on the surface layer by hot pressing, and a second moisture-guiding groove 4 is formed on the inner layer by hot pressing. Due to the hot pressing, the density of the bottom surface of the first moisture-guiding groove 2 is greater than the density of the first moisture-permeable part 1, and the density of the bottom surface of the second moisture-guiding groove 4 is greater than the density of the second moisture-permeable part 3. Therefore, the water permeability of the first moisture-guiding groove 2 and the second moisture-guiding groove 4 is relatively low. When water falls into the first moisture-guiding groove 2, the water will be transferred longitudinally along the first moisture-guiding groove 2 and gradually seep down along the first moisture-permeable parts 1 on both sides, improving the uniformity of water distribution in the longitudinal direction. When water is released from the bottom surface of the surface layer and falls onto the inner layer, the water falling onto the second moisture-guiding groove 4 will be transferred laterally along the second moisture-guiding groove 4 and gradually seep down along the second moisture-permeable parts 3 on both sides, improving the uniformity of water distribution in the lateral direction, thereby improving the uniformity of water distribution.

[0017] like Figure 1 , Figure 2As shown, the cross-section of the second moisture-guiding groove 4 is S-shaped, the arrangement density of the first moisture-guiding groove 2 is greater than that of the second moisture-guiding groove 4, the depth of the first moisture-guiding groove 2 is less than half the thickness of the first moisture-permeable part 1, and several gaskets 5 are fixedly connected to the side of the inner layer away from the surface layer. Both the surface layer and the inner layer are made of cotton fiber.

[0018] Specifically, the cross-section of the second moisture-guiding groove 4 is a continuous S-shape, which further increases the diffusion effect of moisture. At the same time, combined with the high arrangement density of the first moisture-guiding groove 2, it increases the probability of moisture falling into the second moisture-guiding groove 4. The depth of the second moisture-guiding groove 4 is less than half the thickness of the second permeable part 3. By reducing the depth of the first moisture-guiding groove 2 and the second moisture-guiding groove 4, the strength of the non-woven fabric is ensured. The gasket 5 is made of sponge material and is bonded to the inner layer. The gasket 5 creates a gap between the inner layer and the ground, ensuring air circulation in the wall below the non-woven fabric. Both the surface layer and the inner layer are made of hydroentangled cotton fibers. Cotton fibers have good heat retention properties, ensuring the growth environment for seeds.

[0019] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A multi-layer nonwoven fabric, characterized by: It comprises a surface layer and a back layer, the surface layer is composed of first moisture-permeable parts (1) and first moisture-guiding grooves (2) which are arranged alternately and spaced apart in the transverse direction, the back layer is composed of second moisture-permeable parts (3) and second moisture-guiding grooves (4) which are arranged alternately and spaced apart in the longitudinal direction, the density of the bottom surface of the first moisture-guiding grooves (2) is greater than that of the first moisture-permeable parts (1), and the density of the bottom surface of the second moisture-guiding grooves (4) is greater than that of the second moisture-permeable parts (3).

2. The multi-layer nonwoven fabric according to claim 1, characterized by: The cross section of the second moisture-guiding grooves (4) is S-shaped.

3. The multi-layer nonwoven fabric according to claim 2, characterized by: The arrangement density of the first moisture-guiding grooves (2) is greater than that of the second moisture-guiding grooves (4).

4. The multi-layer nonwoven fabric according to claim 1, characterized by: The depth of the first moisture-guiding grooves (2) is less than one half of the thickness of the first moisture-permeable parts (1).

5. The multi-layer nonwoven fabric according to claim 1, characterized by: The side of the back layer away from the surface layer is fixedly connected with a plurality of gaskets (5).

6. The multi-layer nonwoven fabric according to claim 1, characterized by: The surface layer and the back layer are both made of cotton fiber filaments.

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