Negative oxygen ion PU leather

Abstract

The utility model provides negative oxygen ion PU (polyurethane) leather, which belongs to the technical field of synthetic leather and comprises a base cloth layer, a first polyurethane coating layer and a second polyurethane coating layer. The first polyurethane coating layer is arranged between the base cloth layer and the second polyurethane coating layer; the base cloth layer is formed by interweaving warp yarns and weft yarns; the warp yarns and the weft yarns comprise antibacterial anion composite yarns and aramid fiber filaments; the first polyurethane coating layer is a phase-change temperature-adjusting polyurethane coating layer; and the second polyurethane coating layer is an antibacterial anion polyurethane coating layer. The surface layer is made of the antibacterial negative ion polyurethane coating, so that negative ions can be released, and a good antibacterial effect is achieved. The phase-change temperature-adjusting polyurethane coating layer is arranged below the surface layer, so that the PU leather has a phase-change temperature-adjusting function, the contact temperature feeling is more comfortable, and the touch feeling of the PU leather can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of synthetic leather, in particular to negative oxygen ion PU leather. Background Art

[0002] Negative ion PU leather is an environmentally friendly material that combines negative ion technology with polyurethane synthetic leather. Negative ion PU leather continuously releases negative ions, which are beneficial to human health, including smoke and dust removal, sterilization and mildew removal, formaldehyde removal, and air purification. Existing negative ion PU leather is made by mixing negative ion materials with polyurethane coatings, which release negative ions but have limited antibacterial effectiveness and poor tactile comfort. To address this issue, the present invention provides negative oxygen ion PU leather. Utility Model Content

[0003] The purpose of the utility model is to provide a negative oxygen ion PU leather.

[0004] In order to solve the above technical problems, the purpose of this utility model is achieved as follows:

[0005] A negative oxygen ion PU leather comprises: a base fabric layer, a first polyurethane coating layer and a second polyurethane coating layer; the first polyurethane coating layer is arranged between the base fabric layer and the second polyurethane coating layer;

[0006] The base fabric layer is interwoven with warp yarns and weft yarns; the warp yarns and weft yarns both include antibacterial negative ion composite yarns and aramid filaments; the arrangement ratio of the antibacterial negative ion composite yarns to the aramid filaments is 5-10:1; the antibacterial negative ion composite yarns are formed by twisting negative ion polyester fiber yarns and antibacterial nylon fiber yarns;

[0007] The first polyurethane coating layer is a phase change temperature regulating polyurethane coating layer;

[0008] The second polyurethane coating layer is an antibacterial negative ion polyurethane coating layer.

[0009] On the basis of the above solution and as a preferred solution of the above solution, the arrangement ratio of the antibacterial negative ion composite yarn and the aramid filament is 6:1.

[0010] On the basis of the above solution and as a preferred solution of the above solution, the aramid filament is an antibacterial aramid filament.

[0011] On the basis of the above solution and as a preferred solution of the above solution, the thickness of the second polyurethane coating layer is less than or equal to half of the first polyurethane coating layer.

[0012] On the basis of the above scheme and as a preferred scheme of the above scheme, both the first polyurethane coating layer and the second polyurethane coating layer are provided with air holes; and the air holes on the first polyurethane coating layer are connected to the air holes on the second polyurethane coating layer.

[0013] The beneficial effects of this utility model are as follows: the surface layer of the utility model utilizes an antibacterial negative ion polyurethane coating, which not only releases negative ions but also exhibits excellent antibacterial properties. A phase-change thermostatic polyurethane coating layer is provided beneath the surface layer, imparting a phase-change thermostatic function to the PU leather, providing a more comfortable contact temperature and enhancing the tactile feel of the PU leather. The base fabric layer is woven from antibacterial negative ion composite yarn and aramid filaments, combining negative ion and antibacterial properties while also exhibiting high strength, wear resistance, and durability, extending the service life of the PU leather. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the layer structure of the utility model.

[0015] Figure 2 This is a schematic diagram of the warp and weft weaving of the base fabric layer of the present invention.

[0016] Figure 3 This is a schematic diagram of the structure of the antibacterial negative ion composite yarn of the utility model.

[0017] In the figure: 1. base fabric layer; 2. first polyurethane coating layer; 3. second polyurethane coating layer; 4. air vents; 11. aramid filament; 12. negative ion polyester fiber yarn; 13. antibacterial nylon fiber yarn. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] like Figure 1As shown, a negative oxygen ion PU leather includes: a base fabric layer 1, a first polyurethane coating layer 2 and a second polyurethane coating layer 3, the first polyurethane coating layer 2 is arranged between the base fabric layer 1 and the second polyurethane coating layer 3, and the second polyurethane coating layer 3 is the surface layer of the PU leather.

[0021] The base fabric layer 1 is interwoven with warp yarn and weft yarn, both of which include antibacterial negative ion composite yarn and aramid filament 11, and the arrangement ratio of the antibacterial negative ion composite yarn and aramid filament 11 in the warp and weft yarn is 5-10:1. Figure 3 As shown, the antibacterial negative ion composite yarn is formed by twisting together negative ion polyester fiber yarn 12 and antibacterial nylon fiber yarn 13. The negative ion polyester fiber yarn 12 is spun from negative ion polyester fiber, and the raw materials for preparing the negative ion polyester fiber include polyester chips and negative ion masterbatch. It not only has the inherent wrinkle resistance, wear resistance, high strength and other properties of polyester fiber, but also has the function of releasing negative ions. The antibacterial nylon fiber yarn 13 is spun from antibacterial nylon fiber, and the raw materials for preparing the antibacterial nylon fiber include nylon chips and antibacterial masterbatch. The antibacterial nylon fiber yarn 13 can ensure the strength and wear resistance of the base fabric layer 1, and at the same time improve its antibacterial properties to prevent the growth of bacteria and mold. The aramid filaments 11 can greatly enhance the strength and durability of the base fabric layer 1.

[0022] In this embodiment, Figure 2 As shown, the arrangement ratio of the antibacterial negative ion composite yarn and the aramid filament 11 is 6:1.

[0023] Preferably, the aramid filaments 11 are antibacterial aramid filaments to improve the antibacterial property of the base fabric layer 1 .

[0024] The first polyurethane coating layer 2 is a phase-change temperature-regulating polyurethane coating layer. The phase-change temperature-regulating polyurethane coating layer is made of phase-change temperature-regulating microcapsules mixed with polyurethane, has a phase-change temperature-regulating function, and can improve the temperature comfort of PU leather.

[0025] The second polyurethane coating layer 3 is an antibacterial negative ion polyurethane coating layer. The antibacterial negative ion polyurethane coating layer is made by mixing polyurethane resin, negative ion composite material and antibacterial composite material through a processing production process. It has the function of releasing negative ions and good antibacterial properties, which can improve the safety and antibacterial properties of PU leather.

[0026] The thickness of the second polyurethane coating layer 3 is less than or equal to half of the first polyurethane coating layer 2 to ensure a good temperature regulating effect.

[0027] Furthermore, both the first polyurethane coating layer 2 and the second polyurethane coating layer 3 are provided with ventilation holes 4, which are interconnected. The provision of ventilation holes 4 not only improves the breathability of the PU leather but also facilitates the release of negative ions. The ventilation holes 4 are circular, with a plurality of holes arranged in a matrix.

[0028] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A negative oxygen ion PU leather, characterized in that, include: A base fabric layer (1), a first polyurethane coating layer (2) and a second polyurethane coating layer (3); the first polyurethane coating layer (2) is arranged between the base fabric layer (1) and the second polyurethane coating layer (3); The base fabric layer (1) is formed by interweaving warp yarns and weft yarns; the warp yarns and weft yarns both include antibacterial negative ion composite yarns and aramid filaments (11); the arrangement ratio of the antibacterial negative ion composite yarns to the aramid filaments (11) is 5-10:1; the antibacterial negative ion composite yarns are formed by twisting negative ion polyester fiber yarns (12) and antibacterial nylon fiber yarns (13); The first polyurethane coating layer (2) is a phase-change temperature-regulating polyurethane coating layer; The second polyurethane coating layer (3) is an antibacterial negative ion polyurethane coating layer.

2. A negative oxygen ion PU leather according to claim 1, characterized in that, The arrangement ratio of the antibacterial negative ion composite yarn and the aramid filament (11) is 6:

1.

3. A negative oxygen ion PU leather according to claim 1, characterized in that, The aramid filaments (11) are antibacterial aramid filaments.

4. A negative oxygen ion PU leather according to claim 1, characterized in that, The thickness of the second polyurethane coating layer (3) is less than or equal to half of the thickness of the first polyurethane coating layer (2).

5. A negative oxygen ion PU leather according to claim 1, characterized in that, Both the first polyurethane coating layer (2) and the second polyurethane coating layer (3) are provided with air holes (4); and the air holes (4) on the first polyurethane coating layer (2) are connected to the air holes (4) on the second polyurethane coating layer (3).

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