High-toughness leather release paper

Abstract

The utility model provides high-toughness leather release paper which comprises a base layer, an inner reinforcing layer, an outer reinforcing layer, an environment-friendly separation coating and an adhesive layer, the base layer is arranged between the inner reinforcing layer and the outer reinforcing layer, the environment-friendly separation coating is arranged on the outer side of the inner reinforcing layer, the adhesive layer is arranged on the outer side of the outer reinforcing layer, and the adhesive layer is arranged on the outer side of the outer reinforcing layer. The base layer is made of a high-strength and high-toughness synthetic leather material; the release paper is used as a transfer medium in the leather manufacturing process, not only can effectively bear a leather coating material, but also has excellent toughness, and is not easy to damage in the processing, transferring and storing processes, so that the quality and the production efficiency of leather products are improved.

Description

Technical Field

[0001] This utility model relates to the field of leather processing technology, and in particular to a high-toughness leather release paper. Background Technology

[0002] Release paper plays a crucial role in leather processing. As a carrier for leather coating materials, it needs to possess good peelability and sufficient strength to support various operations during leather processing. However, existing leather release papers generally suffer from insufficient toughness, especially under complex processing conditions (such as high temperature, high humidity, or rapid stretching), making them prone to breakage or deformation. This not only affects the quality of the finished leather product but also increases production losses and costs.

[0003] Therefore, it is essential to invent a high-toughness leather release paper. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a high-toughness leather release paper with the following technical solution: a high-toughness leather release paper, comprising a base layer, an inner reinforcing layer, an outer reinforcing layer, an environmentally friendly release coating, and an adhesive layer, wherein: the base layer is disposed between the inner reinforcing layer and the outer reinforcing layer, the outer side of the inner reinforcing layer is provided with an environmentally friendly release coating, the outer side of the outer reinforcing layer is provided with an adhesive layer, and the base layer is made of high-strength, high-toughness synthetic leather material;

[0005] Nano-reinforcing materials are uniformly dispersed in the base layer.

[0006] Preferably, the surface of the base layer is provided with a plurality of holes evenly distributed.

[0007] Preferably, the base layer is formed by mixing high-strength synthetic fibers and natural fibers in a specific ratio.

[0008] Preferably, the inner reinforcing layer and the outer reinforcing layer are interwoven polyester fiber webs or thermoplastic polyurethane films.

[0009] Preferably, the environmentally friendly separation coating uses water-based polyurethane or water-based acrylic resin as the main component, and preferably, the outer surface of the environmentally friendly separation coating is provided with a functional coating.

[0010] Compared with the prior art, the advantages of this utility model are:

[0011] This release paper is used as a transfer medium in the leather manufacturing process. It can not only effectively support the leather coating material, but also has excellent toughness, ensuring that it is not easily damaged during processing, transportation and storage, thereby improving the quality and production efficiency of leather products. Attached Figure Description

[0012] Figure 1This is a schematic diagram of the overall partial cross-sectional structure of this utility model.

[0013] Figure 2 This is an exploded structural diagram of the present invention.

[0014] In the picture:

[0015] 1. Base layer; 2. Inner reinforcement layer; 3. Outer reinforcement layer; 4. Environmentally friendly separation coating; 5. Adhesive layer; 6. Holes. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0017] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Example

[0020] Reference Figure 1-2A high-toughness leather release paper includes a base layer 1, an inner reinforcing layer 2, an outer reinforcing layer 3, an environmentally friendly release coating 4, and an adhesive layer 5. The base layer 1 is disposed between the inner reinforcing layer 2 and the outer reinforcing layer 3 to increase the toughness and strength of the overall structure. The environmentally friendly release coating 4 is disposed on the outside of the inner reinforcing layer 2. The environmentally friendly release coating 4 has low surface energy to ensure easy separation from materials such as prepreg. The adhesive layer 5 is disposed on the outside of the outer reinforcing layer 3 to fix the release paper to a specific carrier for easy storage, transportation, and use. Nano-reinforcing materials are uniformly dispersed in the base layer 1.

[0021] Specifically, the base layer 1 is made of high-strength synthetic fibers and natural fibers mixed in a specific ratio, with the ratio of synthetic fibers to natural fibers being 3:1 to 7:3;

[0022] Synthetic fibers are polyester or nylon fibers, and natural fibers are wood pulp fibers, in order to provide excellent physical strength and abrasion resistance;

[0023] The fiber arrangement in the base layer 1 adopts cross-laying technology to form a three-dimensional network structure, which further enhances the toughness and stability of the release paper;

[0024] The nano-reinforcing material is one or a mixture of nano-silica or nano-cellulose, and its content in the base layer 1 accounts for 1%-5% of the total mass.

[0025] Nano-reinforcing materials are uniformly dispersed in the fiber slurry using ultrasonic dispersion or high-speed shear dispersion technology to ensure their uniform distribution in the base layer 1.

[0026] In this embodiment, the surface of the base layer 1 is uniformly provided with a number of holes 6. During bending and stretching, stress on the leather can easily concentrate in certain areas, leading to cracking or damage. The perforation design can disperse these stresses, reduce the concentration of stress on the leather, and thus extend the service life of the leather.

[0027] In this embodiment, the inner reinforcing layer 2 and the outer reinforcing layer 3 are interwoven polyester fiber webs or thermoplastic polyurethane (TPU) films, used to enhance the tensile strength and tear strength of the release paper.

[0028] In this embodiment, the environmentally friendly separation coating 4 uses water-based polyurethane or water-based acrylic resin as the main component, and the coating thickness is controlled between 0.5μm and 5μm to reduce the impact on the environment while ensuring the peeling effect.

[0029] In this embodiment, the outer surface of the environmentally friendly separation coating 4 is provided with a functional coating to improve the feel, prevent static electricity, or add specific functions, such as waterproof, anti-slip, easy to clean, and high temperature resistant.

[0030] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A high tenacity leather release paper, characterized by: The application relates to a multilayered composite material, which comprises a base layer (1), an inner reinforcing layer (2), an outer reinforcing layer (3), an environmentally-friendly separation coating (4) and an adhesive layer (5), wherein the base layer (1) is arranged between the inner reinforcing layer (2) and the outer reinforcing layer (3), the outer side of the inner reinforcing layer (2) is provided with the environmentally-friendly separation coating (4), and the outer side of the outer reinforcing layer (3) is provided with the adhesive layer (5). The base layer (1) is uniformly added with nano reinforcing materials.

2. A high tenacity leather release paper according to claim 1, characterized in that: The surface of the base layer (1) is uniformly provided with a plurality of holes (6).

3. A high tenacity leather release paper according to claim 1, characterized in that: The base layer (1) is formed by mixing high-strength synthetic fibers and natural fibers in a specific ratio.

4. A high tenacity leather release paper according to claim 1, characterized in that: The inner reinforcing layer (2) and the outer reinforcing layer (3) are interwoven polyester fiber meshes or thermoplastic polyurethane films.

5. A high tenacity leather release paper according to claim 1, characterized in that: The environmentally-friendly separation coating (4) is mainly composed of water-based polyurethane or water-based acrylic resin.

6. A high tenacity leather release paper according to claim 5, characterized in that: The outer side of the environmentally-friendly separation coating (4) is provided with a functional coating.

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