Double-sided PVC artificial leather

Abstract

The utility model discloses a double -faced PVC artificial leather, this double -faced PVC artificial leather includes: intermediate moisture transfer layer, first surface layer and second surface layer, first surface layer sets up in one side surface of intermediate moisture transfer layer, and second surface layer is opposite first surface layer and sets up in the other side surface of intermediate moisture transfer layer, the surface of intermediate moisture transfer layer is provided with the Y type groove of uniform direction arrangement and intercommunication, forms the moisture transfer channel, and first surface layer is provided with the micropore structure of dense arrangement, second surface layer sets up as porous structure layer, and, based on the internal aperture of second surface layer, the one side of second surface layer towards intermediate moisture transfer layer sets up as first gradient area, and the one side of second surface layer away from intermediate moisture transfer layer sets up as second gradient area, to make second surface layer whole formation aperture gradient structure. Double -faced PVC artificial leather is through the Y type groove of uniform direction arrangement and intercommunication and is provided with in intermediate moisture transfer layer surface, forms the moisture transfer channel, to accelerate moisture and airflow conduction through capillary effect.

Description

Technical Field

[0001] This utility model relates to the field of PVC artificial leather technology, and in particular to a double-sided PVC artificial leather. Background Technology

[0002] PVC artificial leather (Polyvinyl Chloride Artificial Leather) is a leather-like material made primarily from polyvinyl chloride (PVC) resin, laminated with a base fabric through coating or calendering processes. It is widely used as a substitute for natural leather, offering advantages such as low cost, ease of processing, and durability. However, traditional PVC leather has limitations in breathability and environmental friendliness. Currently, PVC artificial leather typically consists of a surface layer, a base fabric, and an intermediate layer. The surface layer is generally a surface structure made of PVC resin, plasticizers (such as phthalates), stabilizers, and pigments. The base fabric is usually knitted, non-woven, or woven (polyester, cotton, or blended fabrics). The intermediate layer serves as an additional foaming layer to improve the softness of the PVC artificial leather.

[0003] Existing PVC artificial leather has the advantages of low cost, strong weather resistance, easy cleaning and high customizability. However, its dense PVC structure hinders the passage of air and water vapor, resulting in poor breathability, which greatly limits its application scenarios. Utility Model Content

[0004] Therefore, it is necessary to provide a double-sided PVC artificial leather to address the technical problem of insufficient breathability in existing PVC artificial leather.

[0005] A double-sided PVC artificial leather includes an intermediate moisture-wicking layer, a first surface layer, and a second surface layer. The first surface layer is disposed on one side of the intermediate moisture-wicking layer, and the second surface layer is disposed on the other side of the intermediate moisture-wicking layer opposite to the first surface layer.

[0006] The intermediate moisture-wicking layer is made of hollow polyester staple fiber nonwoven fabric, and the surface of the intermediate moisture-wicking layer is provided with Y-shaped grooves arranged in a uniform direction and interconnected with each other to form moisture-wicking channels; the first surface layer is provided with a densely arranged microporous structure; the second surface layer is provided with a porous structure layer, and based on the internal pore size of the second surface layer, the side of the second surface layer facing the intermediate moisture-wicking layer is provided with a first gradient region, and the side of the second surface layer facing away from the intermediate moisture-wicking layer is provided with a second gradient region, so that the second surface layer as a whole forms a pore size gradient structure.

[0007] In one embodiment, the first surface layer is configured as a PVC and PU hybrid layer.

[0008] In one embodiment, the thickness of the first surface layer is set to 0.15-0.25 mm.

[0009] In one embodiment, the thickness of the first surface layer can be set to 0.15mm, 0.16mm, 0.17mm, 0.18mm, 0.19mm, 0.2mm, 0.21mm, 0.22mm, 0.23mm, 0.24mm or 0.25mm.

[0010] In one embodiment, the micropore size of the first surface layer is set to 20-50 μm, and the pore density is set to 200 pores / cm2.

[0011] In one embodiment, the micropore diameter of the first surface layer can be set to 20μm, 25μm, 30μm, 35μm, 40μm, 45μm or 50μm.

[0012] In one embodiment, the surface of the first surface layer facing away from the intermediate moisture-wicking layer is further coated with a fluorocarbon hydrophobic layer.

[0013] In one embodiment, the diameter of the Y-shaped groove in the intermediate moisture-wicking layer is set to 50-300 μm.

[0014] In one embodiment, the diameter of the Y-shaped groove can be set to 50μm, 100μm, 150μm, 200μm, 250μm or 300μm.

[0015] In one embodiment, the second surface layer is configured as a PVC / TPU composite layer.

[0016] In one embodiment, the thickness of the second surface layer is set to 0.3-0.6 mm.

[0017] In one embodiment, the thickness of the second surface layer described above can be set to 0.3 mm, 0.4 mm, 0.5 mm, or 0.6 mm.

[0018] In one embodiment, the second surface layer is prepared by a gradient foaming process to obtain a first gradient region and a second gradient region.

[0019] In one embodiment, the aperture of the first gradient region is set to 50 μm.

[0020] In one embodiment, the aperture of the second gradient region is set to 200 μm.

[0021] In one embodiment, the aforementioned intermediate moisture-wicking layer is further provided with a conductive fiber layer and an antibacterial layer; the conductive fiber layer is disposed inside the intermediate moisture-wicking layer to enhance the antistatic ability of the base fabric; the antibacterial layer is disposed on one side surface of the intermediate moisture-wicking layer to enhance the antibacterial ability of the base fabric surface.

[0022] In one embodiment, the antibacterial layer is disposed on the side of the intermediate moisture-wicking layer facing the first surface layer.

[0023] In one embodiment, the aforementioned antibacterial layer is disposed on the side of the intermediate moisture-wicking layer facing the second surface layer.

[0024] In one embodiment, the antibacterial layer is disposed on both sides of the intermediate moisture-wicking layer.

[0025] In one embodiment, the thickness of the antibacterial layer is set to 5-10 μm.

[0026] In one embodiment, the thickness of the antibacterial layer can be set to 5μm, 6μm, 7μm, 8μm, 9μm or 10μm.

[0027] The aforementioned double-sided PVC artificial leather features Y-shaped grooves arranged in a uniform direction and interconnected on the surface of the intermediate moisture-wicking layer, forming moisture-wicking channels to accelerate the conduction of moisture and airflow through capillary effect. This serves as the structural basis for its moisture-wicking function and breathability. Based on this, the first surface layer has a densely arranged microporous structure, thereby achieving communication between the outer surface of the first surface layer and the intermediate moisture-wicking layer. The second surface layer is a porous structure layer, and based on the internal pore size of the second surface layer, the side of the second surface layer facing the intermediate moisture-wicking layer is set as the first gradient zone, and the side of the second surface layer facing away from the intermediate moisture-wicking layer is set as the second gradient zone. This results in the second surface layer forming a pore size gradient structure. Thus, the second surface layer, in conjunction with the moisture-wicking channels of the intermediate moisture-wicking layer, can achieve rapid sweat absorption and further enhance breathability. When the double-sided PVC artificial leather of this invention is used in scenarios requiring high breathability and moisture wicking, such as clothing, the first surface layer can be set as the side in contact with the external environment, and the second surface layer can be set as the side in contact with the skin. Thus, the pore size gradient structure of the second surface layer can quickly absorb the sweat excreted by the human skin and conduct it sequentially through the second gradient zone and the first gradient zone to the middle moisture-wicking layer. Then, the middle moisture-wicking layer quickly guides the moisture to the first surface layer based on the capillary effect of the Y-shaped groove, and finally discharges it quickly through the microporous structure of the first surface layer, thereby ensuring the breathability of the double-sided PVC artificial leather. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of double-sided PVC artificial leather in one embodiment;

[0029] Figure 2 This is a schematic diagram of the exploded structure of double-sided PVC artificial leather in one embodiment. Detailed Implementation

[0030] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0036] Please see Figures 1 to 2This utility model discloses a double-sided PVC artificial leather 1, which includes an intermediate moisture-wicking layer 10, a first surface layer 20, and a second surface layer 30. The first surface layer 20 is disposed on one side of the intermediate moisture-wicking layer 10, and the second surface layer 30 is disposed on the other side of the intermediate moisture-wicking layer 10 opposite to the first surface layer 20. The intermediate moisture-wicking layer 10 is the base layer of the double-sided PVC artificial leather 1 of this invention. Specifically, the intermediate moisture-wicking layer 10 is made of hollow polyester staple fiber nonwoven fabric, and the surface of the intermediate moisture-wicking layer 10 is provided with Y-shaped grooves arranged in a uniform direction and interconnected to form moisture-wicking channels, thereby accelerating the conduction of moisture and airflow through capillary effect, thus serving as the structural basis for moisture-wicking function and breathability. Based on this, the first surface layer 20 is provided with a densely arranged microporous structure, thereby realizing the communication between the outer surface of the first surface layer 20 and the intermediate moisture-wicking layer 10, thereby allowing for the flow of moisture and airflow. By controlling the pore size and pore density, the first surface layer 20 can maintain breathability while also being waterproof. The second surface layer 30 is configured as a porous structure layer. Based on the internal pore size of the second surface layer 30, the side of the second surface layer 30 facing the intermediate moisture-wicking layer 10 is designated as a first gradient region 31, and the side of the second surface layer 30 facing away from the intermediate moisture-wicking layer 10 is designated as a second gradient region 32. This creates a gradient pore size structure for the second surface layer 30 as a whole. In this way, the second surface layer 30, in conjunction with the moisture-wicking channels of the intermediate moisture-wicking layer 10, can achieve rapid sweat absorption, further enhancing breathability. Based on the above configuration, more specifically, the pore size of the first gradient region 31 is smaller than that of the second gradient region 32. That is, the pore size of the outer surface of the second surface layer 30 is larger than the pore size on the side facing the intermediate moisture-wicking layer 10, thereby further utilizing capillary effect to accelerate moisture conduction. When the double-sided PVC artificial leather 1 of this utility model is used in scenarios where high breathability and moisture wicking are required, such as clothing, the first surface layer 20 can be set as the side in contact with the external environment, and the second surface layer 30 can be set as the side in contact with the skin. Thus, the pore size gradient structure of the second surface layer 30 can quickly absorb the sweat excreted by the human skin and conduct it sequentially through the second gradient region 32 and the first gradient region 31 to the middle moisture-wicking layer 10. Then, the middle moisture-wicking layer 10 quickly guides the moisture to the first surface layer 20 based on the capillary effect of the Y-shaped groove, and finally quickly discharges it through the microporous structure of the first surface layer 20, thereby ensuring the breathability of the double-sided PVC artificial leather 1.

[0037] Furthermore, in one embodiment, the first surface layer 20 is configured as a PVC and PU mixed layer; in another embodiment, the thickness of the first surface layer 20 is configured as 0.15-0.25 mm; in some embodiments, the thickness of the first surface layer 20 may be configured as 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm, 0.2 mm, 0.21 mm, 0.22 mm, 0.23 mm, 0.24 mm or 0.25 mm.

[0038] Furthermore, in one embodiment, the micropore diameter of the first surface layer 20 is set to 20-50 μm, and the pore density is set to 200 pores / cm². In some embodiments, the micropore diameter of the first surface layer 20 can be set to 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, or 50 μm.

[0039] Furthermore, in one embodiment, the surface of the first surface layer 20 facing away from the intermediate moisture-wicking layer 10 is also coated with a fluorocarbon hydrophobic layer 21 to further enhance the surface anti-fouling function of the first surface layer 20.

[0040] Furthermore, in one embodiment, the diameter of the Y-shaped groove in the intermediate moisture-wicking layer 10 is set to 50-300 μm. In some embodiments, the diameter of the Y-shaped groove can be set to 50 μm, 100 μm, 150 μm, 200 μm, 250 μm or 300 μm.

[0041] Furthermore, in one embodiment, the second surface layer 30 is a PVC / TPU composite layer; in another embodiment, the thickness of the second surface layer 30 is set to 0.3-0.6 mm; in some embodiments, the thickness of the second surface layer 30 can be set to 0.3 mm, 0.4 mm, 0.5 mm or 0.6 mm.

[0042] Furthermore, in one embodiment, the second surface layer 30 is prepared by a gradient foaming process to obtain a first gradient region 31 and a second gradient region 32; in another embodiment, the pore size of the first gradient region 31 is set to 50 μm; and in yet another embodiment, the pore size of the second gradient region 32 is set to 200 μm.

[0043] Furthermore, the intermediate moisture-wicking layer 10 is also provided with a conductive fiber layer 11 and an antibacterial layer 12; the conductive fiber layer 11 is disposed inside the intermediate moisture-wicking layer 10 to improve the antistatic ability of the base fabric; the antibacterial layer 12 is disposed on one side surface of the intermediate moisture-wicking layer 10 to improve the antibacterial ability of the base fabric surface. In one embodiment, the antibacterial layer 12 is disposed on the side of the intermediate moisture-wicking layer 10 facing the first surface layer 20; in another embodiment, the antibacterial layer 12 is disposed on the side of the intermediate moisture-wicking layer 10 facing the second surface layer 30; in yet another embodiment, the antibacterial layer 12 is disposed on both sides of the intermediate moisture-wicking layer 10.

[0044] Furthermore, in one embodiment, the thickness of the antimicrobial layer 12 is set to 5-10 μm. In some embodiments, the thickness of the antimicrobial layer 12 may be set to 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, or 10 μm.

[0045] In summary, the double-sided PVC artificial leather disclosed in this utility model forms moisture-wicking channels by setting Y-shaped grooves arranged in a uniform direction and interconnected on the surface of the middle moisture-wicking layer. This accelerates the conduction of moisture and airflow through capillary effect, serving as the structural basis for moisture-wicking function and breathability. Based on this, the first surface layer is provided with a densely arranged microporous structure, thereby realizing the connection between the outer surface of the first surface layer and the middle moisture-wicking layer. The second surface layer is set as a porous structure layer. Based on the internal pore size of the second surface layer, the side of the second surface layer facing the middle moisture-wicking layer is set as a first gradient zone, and the side of the second surface layer away from the middle moisture-wicking layer is set as a second gradient zone, so that the second surface layer as a whole forms a pore size gradient structure. Thus, the second surface layer, together with the moisture-wicking channels of the middle moisture-wicking layer, can achieve rapid sweat absorption function and further enhance breathability. When the double-sided PVC artificial leather of this invention is used in scenarios requiring high breathability and moisture wicking, such as clothing, the first surface layer can be set as the side in contact with the external environment, and the second surface layer can be set as the side in contact with the skin. Thus, the pore size gradient structure of the second surface layer can quickly absorb the sweat excreted by the human skin and conduct it sequentially through the second gradient zone and the first gradient zone to the middle moisture-wicking layer. Then, the middle moisture-wicking layer quickly guides the moisture to the first surface layer based on the capillary effect of the Y-shaped groove, and finally discharges it quickly through the microporous structure of the first surface layer, thereby ensuring the breathability of the double-sided PVC artificial leather.

[0046] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A double-sided PVC artificial leather, characterized in that, include: The intermediate moisture-wicking layer, the first surface layer, and the second surface layer are provided on one side surface of the intermediate moisture-wicking layer, and the second surface layer is provided on the other side surface of the intermediate moisture-wicking layer opposite to the first surface layer. The middle moisture-wicking layer is made of hollow polyester staple fiber nonwoven fabric, and the surface of the middle moisture-wicking layer is provided with Y-shaped grooves arranged in the same direction and interconnected with each other to form a moisture-wicking channel. The first surface layer has a densely arranged microporous structure; The second surface layer is configured as a porous structure layer. Based on the internal pore size of the second surface layer, the side of the second surface layer facing the middle moisture-wicking layer is configured as a first gradient region, and the side of the second surface layer facing away from the middle moisture-wicking layer is configured as a second gradient region, thereby making the second surface layer as a whole form a pore size gradient structure.

2. The double-sided PVC artificial leather according to claim 1, characterized in that, The first surface layer is a mixture of PVC and PU.

3. The double-sided PVC artificial leather according to claim 2, characterized in that, The thickness of the first surface layer is set to 0.15-0.25 mm.

4. The double-sided PVC artificial leather according to claim 3, characterized in that, The micropore size of the first surface layer is set to 20-50 μm, and the pore density is set to 200 pores / cm2.

5. The double-sided PVC artificial leather according to claim 4, characterized in that, The surface of the first outer layer facing away from the middle moisture-wicking layer is also coated with a fluorocarbon hydrophobic layer.

6. The double-sided PVC artificial leather according to claim 1, characterized in that, The diameter of the Y-shaped groove in the middle moisture-wicking layer is set to 50-300μm.

7. The double-sided PVC artificial leather according to claim 1, characterized in that, The second surface layer is a composite layer of PVC and TPU.

8. The double-sided PVC artificial leather according to claim 7, characterized in that, The thickness of the second surface layer is set to 0.3-0.6 mm.

9. The double-sided PVC artificial leather according to claim 1, characterized in that, The aperture of the first gradient region is set to 50 μm.

10. The double-sided PVC artificial leather according to claim 1, characterized in that, The aperture of the second gradient region is set to 200 μm.

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