Leather with high wear resistance and fracture resistance

Abstract

The utility model relates to the technical field of leather materials, and discloses highly wear-resistant and fracture-resistant leather, which comprises a base material layer, a reinforced fiber layer, an elastic buffer layer and a wear-resistant coating are sequentially arranged on the base material layer, the reinforced fiber layer is positioned above the base material layer, the elastic buffer layer is positioned above the reinforced fiber layer, and the wear-resistant coating is positioned above the elastic buffer layer. The wear-resistant coating is located above the elastic buffer layer, the reinforced fiber layer is formed by weaving high-modulus and high-strength nanofibers, and the reinforced fiber layer is embedded in the base material layer. According to the utility model, the reinforced fiber layer formed by weaving the high-modulus and high-strength nanofibers is introduced and is embedded into the base material layer, so that the tensile strength and the fracture resistance of the leather are remarkably improved, and the structure enables the leather to more effectively disperse and resist stress when the leather is subjected to external force such as bending, folding or stretching, so that the tensile strength and the fracture resistance of the leather are improved. The service life of the leather is greatly prolonged, and the integrity and the stability of the leather can be kept even if the leather is frequently used and in a severe environment.

Description

Technical Field

[0001] The utility model relates to the technical field of leather materials, in particular to a leather with high wear resistance and folding resistance. Background Technique

[0002] Leather is obtained through physical and chemical processes such as hair removal and tanning. It is the denatured and non-perishable animal leather composed of natural protein fibers tightly woven in three-dimensional space. It has a special grain layer on its surface, with natural grain patterns and luster, and a comfortable touch. In the field of modern materials science, as a widely used material, the improvement of the performance of leather has always been a research and development hotspot.

[0003] However, although traditional leather has a natural texture and good touch, it has certain limitations in terms of tensile strength, folding resistance, and wear resistance. Especially in frequent use and harsh environments, it is prone to problems such as damage, edge peeling, or tearing, seriously affecting its service life and user experience. Therefore, a leather with high wear resistance and folding resistance is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a leather with high wear resistance and folding resistance is proposed.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: a leather with high wear resistance and folding resistance, including a base material layer, on which an enhanced fiber layer, an elastic buffer layer, and a wear-resistant coating are sequentially arranged. The enhanced fiber layer is located above the base material layer, the elastic buffer layer is located above the enhanced fiber layer, and the wear-resistant coating is located above the elastic buffer layer. The enhanced fiber layer is woven from high-modulus and high-strength nanofibers and is embedded in the base material layer.

[0006] As a further description of the above technical scheme:

[0007] The elastic buffer layer adopts a polyurethane microcellular foaming material, and the elastic buffer layer is connected to the enhanced fiber layer by hot pressing.

[0008] As a further description of the above technical scheme:

[0009] The wear-resistant coating is provided with a primer layer, an enhanced particle layer, and a transparent wear-resistant top layer. The primer layer is the bottom layer, the enhanced particle layer is located above the primer layer, and the transparent wear-resistant top layer is located above the enhanced particle layer.

[0010] As a further description of the above technical scheme:

[0011] The primer layer is crosslinked and cured with the elastic buffer layer, and hard wear-resistant microparticles are scattered in the enhanced particle layer.

[0012] As a further description of the above technical solution:

[0013] A waterproof and breathable layer is provided between the wear-resistant coating and the elastic buffer layer, and the waterproof and breathable layer is made of a microporous moisture-permeable membrane material.

[0014] As a further description of the above technical solution:

[0015] The base material layer is made of high-quality natural leather or high-performance synthetic leather.

[0016] As a further description of the above technical solution:

[0017] The edge of the base material layer is subjected to edge pressing treatment.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, by introducing a reinforcing fiber layer woven from nanofibers with high modulus and high strength and embedding it in the base material layer, the tensile strength and flexural resistance of the leather are significantly improved. This structure enables the leather to more effectively disperse and resist stress when subjected to external forces such as bending, folding or stretching, greatly extending the service life of the leather. Even under frequent use and harsh environments, it can maintain its integrity and stability.

[0020] 2. In the utility model, the elastic buffer layer made of polyurethane microporous foaming material not only provides good elasticity and buffering effect for the leather, effectively absorbs and disperses external impacts and vibrations, but also keeps the interior of the leather dry and comfortable. This design not only improves the comfort of wearing or using, but also protects the leather and the structure below it from damage, reducing wear and tear caused by long-term stress or impact.

[0021] 3. In the utility model, the multi-layer structure design of the wear-resistant coating, including the primer layer, the reinforced particle layer and the transparent wear-resistant top layer, ensures high wear resistance and scratch resistance on the leather surface. At the same time, the addition of the waterproof and breathable layer realizes the free exchange of air and water vapor without affecting the waterproof performance of the leather, keeping the interior of the leather dry and comfortable. This design not only meets the practical needs but also improves the user experience, enabling the leather to maintain excellent performance in a variety of complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structure schematic diagram of a highly wear-resistant and flex-resistant leather proposed by the utility model;

[0023] Figure 2 It is an internal structure schematic diagram of a highly wear-resistant and flex-resistant leather proposed by the utility model Figure 1 ;

[0024] Figure 3 Internal structure schematic diagram of a highly wear-resistant and fold-resistant leather proposed by the present utility model Figure 2 ;

[0025] Figure 4 Internal structure schematic diagram of a highly wear-resistant and fold-resistant leather proposed by the present utility model Figure 3 。

[0026] Legend description:

[0027] 1. Substrate layer; 2. Reinforcing fiber layer; 3. Elastic buffer layer; 4. Wear-resistant coating; 5. Primer layer; 6. Reinforcing particle layer; 7. Transparent wear-resistant top layer; 8. Waterproof and breathable layer. Specific implementation manner

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Refer to Figures 1 - 4 , an embodiment provided by the present utility model: a highly wear-resistant and fold-resistant leather, including a substrate layer 1, on which a reinforcing fiber layer 2, an elastic buffer layer 3, and a wear-resistant coating 4 are sequentially arranged. The reinforcing fiber layer 2 is located above the substrate layer 1, the elastic buffer layer 3 is located above the reinforcing fiber layer 2, and the wear-resistant coating 4 is located above the elastic buffer layer 3. The reinforcing fiber layer 2 is woven from high-modulus and high-strength nanofibers, and the reinforcing fiber layer 2 is embedded in the substrate layer 1. By introducing the reinforcing fiber layer 2 woven from high-modulus and high-strength nanofibers and embedding it in the substrate layer 1, the tensile strength and fold resistance of the leather are significantly improved. This structure enables the leather to more effectively disperse and resist stress when subjected to external forces such as bending, folding, or stretching, greatly extending the service life of the leather and maintaining its integrity and stability even under frequent use and harsh environments.

[0030] The elastic buffer layer 3 is made of polyurethane microporous foaming material. The elastic buffer layer 3 is connected to the reinforcing fiber layer 2 by hot pressing. The wear-resistant coating 4 is provided with a primer layer 5, a reinforcing particle layer 6 and a transparent wear-resistant top layer 7. The primer layer 5 is the bottom layer, the reinforcing particle layer 6 is located above the primer layer 5, and the transparent wear-resistant top layer 7 is located above the reinforcing particle layer 6. The primer layer 5 is crosslinked and cured with the elastic buffer layer 3. Hard wear-resistant microparticles are scattered in the reinforcing particle layer 6. A waterproof and breathable layer 8 is arranged between the wear-resistant coating 4 and the elastic buffer layer 3. The waterproof and breathable layer 8 is made of microporous moisture-permeable membrane material. The substrate layer 1 is made of high-quality natural leather or high-performance synthetic leather. The edge of the substrate layer 1 is subjected to edge pressing treatment. The elastic buffer layer 3 made of polyurethane microporous foaming material not only provides good elasticity and buffering effect for the leather, effectively absorbs and disperses the impact and vibration from the outside, but also keeps the inside of the leather dry and comfortable. This design not only improves the comfort of wearing or using, but also protects the leather and the structure below it from damage, reducing the wear and tear caused by long-term stress or impact. The multi-layer structure design of the wear-resistant coating 4, including the primer layer 5, the reinforcing particle layer 6 and the transparent wear-resistant top layer 7, ensures the high wear resistance and scratch resistance of the leather surface. At the same time, the addition of the waterproof and breathable layer 8 realizes the free exchange of air and water vapor without affecting the waterproof performance of the leather, keeping the inside of the leather dry and comfortable. This design not only meets the practical needs, but also improves the user experience, enabling the leather to maintain excellent performance in a variety of complex environments.

[0031] Working principle: In the highly wear-resistant and fold-resistant leather, as the foundation of the leather, the substrate layer 1 provides basic support and stability. High-quality natural leather or high-performance synthetic leather is used as the substrate to ensure the basic quality of the leather. The edge of the substrate layer 1 is edge-pressed to enhance the firmness and durability of the edge, preventing edge peeling or tearing during use. The reinforcing fiber layer 2 located above and embedded in the substrate layer 1 is woven from high-modulus and high-strength nanofibers. The main function of this layer is to significantly improve the tensile strength and fold resistance of the leather. The high-strength characteristics of the nanofibers enable the leather to better disperse and resist stress when subjected to external forces, thereby extending its service life. The elastic buffer layer 3 uses polyurethane microporous foam material and is tightly connected to the reinforcing fiber layer 2 by hot pressing. The main function of this layer is to provide good elasticity and buffering effect, capable of absorbing and dispersing external impacts and vibrations, protecting the leather and the structure below it from damage. At the same time, the breathability of the polyurethane microporous foam material also helps to keep the inside of the leather dry and comfortable. The waterproof and breathable layer 8 located between the wear-resistant coating 4 and the elastic buffer layer 3 is made of microporous moisture-permeable membrane material. This layer ensures the waterproof performance of the leather while allowing air and water vapor to exchange through the micropores, keeping the inside of the leather dry and comfortable. The wear-resistant coating 4 is the protective layer on the leather surface and is composed of a primer layer 5, a reinforcing particle layer 6, and a transparent wear-resistant top layer 7. The primer layer 5 is cross-linked and cured with the elastic buffer layer 3 to enhance the bonding force between the coating and the substrate. Hard wear-resistant microparticles are scattered in the reinforcing particle layer 6, and these microparticles form a hard protective layer on the surface of the coating, effectively resisting wear and scratches. The transparent wear-resistant top layer 7 provides a smooth surface texture and further enhances the wear resistance of the coating.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A highly wear-resistant and anti-bending leather, comprising a substrate layer (1), characterized in that: A reinforcing fiber layer (2), an elastic buffer layer (3), and a wear-resistant coating (4) are sequentially arranged on the substrate layer (1); the reinforcing fiber layer (2) is located above the substrate layer (1); the elastic buffer layer (3) is located above the reinforcing fiber layer (2); the wear-resistant coating (4) is located above the elastic buffer layer (3); the reinforcing fiber layer (2) is woven from high-modulus, high-strength nanofibers; and the reinforcing fiber layer (2) is embedded in the substrate layer (1).

2. The highly wear-resistant and anti-bending leather according to claim 1, characterized in that: The elastic buffer layer (3) is made of polyurethane microporous foam material, and the elastic buffer layer is connected to the reinforcing fiber layer (2) by hot pressing.

3. The highly wear-resistant and anti-bending leather according to claim 2, characterized in that: The wear-resistant coating (4) is provided with a primer layer (5), a reinforcing particle layer (6) and a transparent wear-resistant top layer (7), wherein the primer layer (5) is the bottom layer, the reinforcing particle layer (6) is located above the primer layer (5), and the transparent wear-resistant top layer (7) is located above the reinforcing particle layer (6).

4. The highly wear-resistant and anti-bending leather according to claim 3, characterized in that: The primer layer (5) is cross-linked and cured to connect with the elastic buffer layer (3), and hard wear-resistant particles are dispersed in the reinforcing particle layer (6).

5. The highly wear-resistant and anti-bending leather according to claim 4, characterized in that: A waterproof and breathable layer (8) is provided between the wear-resistant coating (4) and the elastic buffer layer (3), and the waterproof and breathable layer (8) is made of a microporous moisture-permeable membrane material.

6. The highly wear-resistant and anti-bending leather according to claim 5, characterized in that: The substrate layer (1) is made of high-quality natural leather or high-performance synthetic leather.

7. The highly wear-resistant and anti-bending leather according to claim 6, characterized in that: The edge of the substrate layer (1) is subjected to edge pressing treatment.

Images