Moisture permeable non-woven fabric

Abstract

The utility model discloses a moisture-permeable non-woven fabric, which relates to the field of non-woven fabrics, and has the technical scheme that the moisture-permeable non-woven fabric comprises a moisture-permeable layer and a hydrophobic layer, the hydrophobic layer is provided with a plurality of through holes, and one side of the moisture-permeable layer, which is far away from the hydrophobic layer, is provided with a plurality of grooves which are arranged at intervals. When the precipitation amount is large, the moisture-permeable rate of the moisture-permeable layer is limited, accumulated water is formed on the surface of the moisture-permeable layer, the grooves are low, the contact area between the grooves and the outside is larger, more water is concentrated towards the grooves and infiltrates downwards at the grooves, the infiltrated water enters the through holes in the vertical direction, and therefore the moisture-permeable effect is achieved. The non-woven fabric has the advantages that water transfer in the non-woven fabric in the horizontal direction is reduced, the water seepage amount between the adjacent grooves is reduced, after rainfall stops, the parts between the grooves can be dried more quickly, air permeability is guaranteed, the germination rate of plants is further guaranteed, and the polylactic acid fibers have good hydrophobicity and degradability, so that the non-woven fabric is environment-friendly and pollution-free. And the environmental protection property of the non-woven fabric is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of non - woven fabrics more specifically, it relates to a kind of moisture permeable non - woven fabrics. BACKGROUND

[0002] Non-woven fabric is a kind of fabric formed without spinning and weaving, just directional or random arrangement of textile short fibers or filaments, form web structure, then it is reinforced by mechanical, thermal bonding or chemical method, non-woven fabric is low in cost, fast in production, easy to process, and is widely used in many fields, when laying green, the non-woven fabric that is water-permeable and air-permeable is covered on the plant seed that has not germinated, can control the effect of moisture and temperature, provide suitable environment for seed, and seed germination is easy to penetrate non-woven fabric, and does not affect the growth of plant.

[0003] The existing non-woven fabric can reduce the evaporation of water on the ground, and also allows water to pass through on rainy days, however, when the precipitation is large, the long time wet non-woven fabric and soil can affect the germination rate of plant. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the prior art, the utility model aims at providing a kind of moisture permeable non-woven fabric.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a kind of moisture permeable non-woven fabric, including moisture permeable layer and hydrophobic layer, the hydrophobic layer is equipped with a plurality of through holes, the moisture permeable layer is equipped with a plurality of recesses arranged at intervals on the side away from the hydrophobic layer.

[0006] The utility model is further provided as follows: the depth of the recess gradually decreases along the direction away from the recess axis.

[0007] The utility model is further provided as follows: a plurality of through holes are formed on the moisture permeable layer and the hydrophobic layer, and the through holes are coaxially arranged with the recesses.

[0008] The utility model is further provided as follows: the density of the through holes is greater than the density of the recesses.

[0009] The utility model is further provided as follows: the thickness of the moisture permeable layer is less than the thickness of the hydrophobic layer.

[0010] The utility model is further provided as follows: the hydrophobic layer uses polylactic acid fiber.

[0011] In summary, this utility model has the following beneficial effects: When the rainfall is heavy, the permeability of the permeable layer is limited, and water accumulates on the surface of the permeable layer. However, the grooves are lower and have a larger contact area with the outside, allowing more water to concentrate in the grooves and seep down. The seeping water enters the through holes vertically, reducing the horizontal transfer of water within the nonwoven fabric and reducing the amount of water seeping between adjacent grooves. When the rainfall stops, the area between the grooves dries faster, ensuring air permeability and thus guaranteeing the germination rate of plants. Polylactic acid fiber filaments have good hydrophobicity and are biodegradable, improving the environmental friendliness of the nonwoven fabric. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of the present invention.

[0013] In the diagram: 1. Moisture-permeable layer; 2. Hydrophobic layer; 3. Through hole; 4. Groove; 5. Through hole. Detailed Implementation

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

[0015] Example: A breathable nonwoven fabric, such as Figure 1 As shown, it includes a moisture-permeable layer 1 and a hydrophobic layer 2. The hydrophobic layer 2 has several through holes 3. The moisture-permeable layer 1, on the side away from the hydrophobic layer 2, has several spaced grooves 4. Both the moisture-permeable layer 1 and the hydrophobic layer 2 have several through holes 5, which are coaxially arranged with the grooves 4. The density of the through holes 3 is greater than the density of the grooves 4. Specifically, the moisture-permeable layer 1 is needle-punched from cotton fibers, providing good insulation. When moisture falls onto the moisture-permeable layer 1, it seeps downwards and eventually passes through the through holes 3 and then through the hydrophobic layer 2. When the rainfall is heavy, the moisture permeability of the moisture-permeable layer 1 is limited, resulting in water accumulation on its surface. Meanwhile, the grooves... The four grooves are lower and have a larger contact area with the outside, allowing more moisture to concentrate in the grooves and seep down. The seeping water then enters the through-holes 3 vertically, reducing the horizontal transfer of water within the non-woven fabric and decreasing the amount of water seeping between adjacent grooves 4. When rainfall stops, the area between the grooves 4 dries faster, ensuring air permeability and thus guaranteeing the germination rate of plants. At the same time, when laying the non-woven fabric, drainage holes are left on the ground through the through-holes 5 by puncturing, further increasing the moisture conduction rate at the grooves 4 and reducing the lateral spread of water in the soil.

[0016] like Figure 1The depth of the groove 4 gradually decreases along the direction away from the axis of the groove 4, the thickness of the moisture-permeable layer 1 is less than the thickness of the hydrophobic layer 2, the hydrophobic layer 2 adopts polylactic acid fiber yarn, specifically, an inclined surface is formed at the side wall of the groove 4, thereby increasing the water penetration area at the groove 4, and by reducing the thickness of the moisture-permeable layer 1, the moisture in the moisture-permeable layer 1 is more easily saturated, the polylactic acid fiber yarn has good hydrophobicity and degradability, and the environmental friendliness of the non-woven fabric is improved.

[0017] The preferred embodiments of the present application are described above, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical solutions falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and refinements without departing from the principles of the present application shall be considered as falling within the protection scope of the present application.

Claims

1. A moisture permeable nonwoven fabric, characterized by: It comprises a moisture-permeable layer (1) and a moisture-repellent layer (2), a plurality of through holes (3) are formed on the moisture-repellent layer (2), and a plurality of recesses (4) are arranged at intervals on the side of the moisture-permeable layer (1) away from the moisture-repellent layer (2).

2. The moisture-permeable nonwoven fabric according to claim 1, characterized by: The depth of the recess (4) gradually decreases along the direction away from the axis of the recess (4).

3. The moisture-permeable nonwoven fabric according to claim 1, wherein: A plurality of through holes (5) are formed on the moisture-permeable layer (1) and the moisture-repellent layer (2), and the through holes (5) are coaxially arranged with the recess (4).

4. The moisture-permeable nonwoven fabric according to claim 3, characterized by: The density of the through holes (3) is greater than the density of the recess (4).

5. The moisture-permeable nonwoven fabric according to claim 1, wherein: The thickness of the moisture-permeable layer (1) is less than the thickness of the moisture-repellent layer (2).

6. The moisture-permeable nonwoven fabric according to claim 1, wherein: The moisture-repellent layer (2) is made of polylactic acid fiber.

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