Automotive trim composite material

Abstract

The utility model discloses an automotive trim composite material, comprising: a stone layer made of a natural or nature-imitating material with lines, the thickness of the stone layer being 0.1-3 mm; the protective layer is a PV (Polyvinyl) or UV (Ultraviolet) coating coated on the upper surface of the stone layer, and the thickness of the coating is 0.002-1.2 mm; and the injection molding layer is arranged on the lower surface of the stone layer so as to form the basic thickness and strength of the composite material. The automotive trim composite material has the advantage of low cost; and moreover, the manufacturing process is simple, and personalized aesthetic requirements on the automotive trim can be quickly met.

Description

Technical Field

[0001] The present application relates to the technical field of automobile decoration materials, and in particular to a composite material for automobile interior decoration. Background Art

[0002] With the passage of time, cars have evolved from simple means of transportation to mobile spaces for people's lives. Consequently, people's expectations for vehicle interior space have also evolved accordingly. Consequently, automotive interior materials have gradually evolved from traditional materials like genuine leather to various composite materials, as only composite materials can meet the diverse and personalized needs. Automotive interior materials must meet the diverse aesthetic requirements of different users, including high-end, luxurious, simple, and colorful. Accordingly, people have higher expectations not only for the visual aesthetics of automotive interior materials, but also for their tactile properties. Existing automotive interior materials cannot meet these new user demands, or the production costs of meeting these personalized requirements are extremely high. Summary of the Invention

[0003] In view of this, the technical problem to be solved by this application is to provide an automotive interior composite material to solve the problems of insufficient diversity and insufficient experience of automotive interior products in the existing technology, as well as the problem of being unable to produce personalized interior composite materials at a relatively low cost.

[0004] To this end, the present application provides an automotive interior composite material, comprising: a stone layer, which is a natural or imitation-natural material with texture, and the thickness of the stone layer is between 0.1 and 3 mm; a protective layer, which is a PV or UV coating applied on the upper surface of the stone layer, and the thickness of the coating is between 0.002 and 1.2 mm; and an injection molding layer, which is arranged on the lower surface of the stone layer to form the basic thickness and strength of the composite material, wherein the stone layer is fixed to the injection molding layer by injection molding.

[0005] The automotive interior composite material provided in this application utilizes a textured natural stone layer or a simulated natural stone layer as a base layer, followed by a coating layer disposed above the stone layer and an injection-molded layer disposed below. This composite structure combines the beautiful texture of natural stone with the disadvantages of stone's susceptibility to wear and breakage. The use of simulated natural stone further offers the advantage of low cost. Furthermore, the manufacturing process is simple: the coating on the stone layer protects the natural stone or simulated natural stone from damage during the injection molding process and from wear during daily use. The stone layer and the injection-molded layer are secured together by injection molding, resulting in a simple and environmentally friendly manufacturing process that can quickly meet the individual aesthetic requirements of automotive interiors. The convex-concave texture layer enhances the three-dimensional effect of the automotive interior composite material, providing users with a strong tactile experience. The combination of the protrusions on the material's surface and the internal pattern further enhances the aesthetic effect of the pattern, providing users with a rich visual and tactile experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 Shown is a schematic flow chart of a process for manufacturing a composite material for automotive interior decoration according to one embodiment of the present application.

[0007] Figure 2 Shown is a cross-sectional view of an automotive interior composite material according to one embodiment of the present application. DETAILED DESCRIPTION

[0008] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clearer and more understandable, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0009] In this application, words related to directions, such as up, down, top, bottom, inside, outside, high, and low, are based on the position of the composite material under normal use.

[0010] In this application, the term PV, full name Polyvinyl, is a polyvinyl chloride material.

[0011] In order to provide a personalized automotive interior composite material with high production efficiency that meets personalized aesthetic needs, the present application provides, on the one hand, a process for manufacturing an automotive interior composite material, comprising the following steps:

[0012] A. Select a natural or imitation natural stone layer with texture and cut it into the required shape. The thickness of the stone layer is between 0.1-3mm.

[0013] B. Apply a PV or UV coating to the upper surface of the stone layer to a thickness of 0.002-1.2mm. After the coating cures, the stone layer is placed in an injection mold for back-bone injection molding to establish the composite's basic thickness and strength. Alternatively, the stone layer is placed in an injection mold for back-bone injection molding to establish the composite's basic thickness and strength, and then a PV or UV coating is applied to the upper surface of the stone layer to a thickness of 0.002-1.2mm. Using a textured natural stone layer or a simulated natural stone layer as the base layer, with the coating layer applied above and the injection molding layer below, this composite structure combines the beautiful texture of natural stone while overcoming the wear and cracking drawbacks of natural or simulated natural stone. Using simulated natural stone also offers the advantages of low cost and a simple manufacturing process, enabling it to quickly meet the individual aesthetic requirements of automotive interiors. The simulated natural stone layer can be made from stone powder, resin, non-woven fabric, or a material with simulated stone grain.

[0014] In at least one embodiment, the PV coating has a thickness of 0.01 mm to 1.2 mm.

[0015] In at least one embodiment, the thickness of the UV coating is 0.01 mm-0.5 mm.

[0016] In at least one embodiment, after step B, the method further includes the following steps: performing multi-layer screen printing with UV ink on the upper surface of the coating and forming a convex-concave texture layer after drying, wherein the thickness of the convex-concave texture layer is greater than 0.05 mm.

[0017] In at least one embodiment, the pattern of the convex-concave texture layer corresponds to the grain pattern of a natural or simulated natural stone layer.

[0018] In at least one embodiment, the thickness of the convex-concave texture layer is between 0.05 mm and 0.2 mm.

[0019] Another aspect of the present application provides an automotive interior composite material, comprising:

[0020] The stone layer is a natural or natural-looking material with textures, and the thickness of the stone layer is between 0.1 and 3 mm;

[0021] A protective layer is a PV or UV coating applied on the upper surface of the stone layer, with a thickness of 0.002-1.2 mm; and

[0022] The injection molding layer is arranged on the lower surface of the stone layer to form the basic thickness and strength of the composite material; wherein the stone layer is fixed to the injection molding layer by injection molding.

[0023] In at least one embodiment, the thickness of the PV coating is 0.01 mm to 1.2 mm, and the thickness of the UV coating is 0.01 mm to 0.5 mm.

[0024] In at least one embodiment, the upper surface of the coating includes a convex-concave texture layer formed by multi-layer screen printing, and the thickness of the convex-concave texture layer is greater than 0.05 mm; the convex-concave texture layer is a UV ink layer.

[0025] In at least one embodiment, the pattern of the convex-concave texture layer corresponds to the grain pattern of a natural or simulated natural stone layer.

[0026] In at least one embodiment, the thickness of the convex-concave texture layer is between 0.05 mm and 0.2 mm.

[0027] The specific implementation process of the embodiments of the present application will be described in detail below with reference to the accompanying drawings:

[0028] like Figure 1 FIG. 1 is a flow chart of a manufacturing process of a composite material for automobile interior decoration according to one embodiment, which includes the following steps:

[0029] A. First, select a natural or imitation natural stone layer with texture and cut it into the required shape. The thickness of the stone layer is between 0.1-3mm.

[0030] The stone layer also preferably has a thickness of 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, etc.

[0031] B. Then, apply PV or UV coating on the upper surface of the stone layer with a coating thickness of 0.002-1.2mm. After the coating is cured, the stone layer is placed in the injection mold for back skeleton injection molding to form the basic thickness and strength of the composite material; or the stone layer is placed in the injection mold for back skeleton injection molding to form the basic thickness and strength of the composite material, and then apply PV or UV coating on the upper surface of the stone layer with a coating thickness of 0.002-1.2mm.

[0032] In one embodiment, after step B, the method further includes: performing multi-layer screen printing with UV ink on the upper surface of the coating and drying the resulting convex-concave texture layer, wherein the thickness of the convex-concave texture layer is greater than 0.05 mm.

[0033] If a convex-concave texture layer formed by UV ink printing is provided on the upper surface of the coating, the convex-concave texture layer is UV cured after the injection molding layer is completed to enhance the strength of the convex-concave texture layer but avoid the pattern formed by the UV ink from falling off.

[0034] In one embodiment, after completing step B, glue is applied to the edge of the composite material to further reinforce the composite material and prevent delamination of the composite material during a subsequent cleaning process.

[0035] This application incorporates a textured natural or simulated natural stone layer as part of a composite material, with a coating applied to its surface and an injection-molded layer applied to its underside. This composite material, used for automotive interiors, imparts the premium feel of natural stone while overcoming the drawbacks of natural or simulated natural stone layers, such as susceptibility to wear, breakage, and poor plasticity. The simulated natural stone layer also offers the advantage of low cost. The UV curing time and sequence of the pattern layer formed after UV ink printing are arranged after the injection-molded layer is formed, creating a convex and concave texture on the stone layer's surface, effectively ensuring the durability of the UV ink pattern and preventing it from fading.

[0036] like Figure 2Another aspect of the present application shows a cross-sectional view of a composite material for automotive interiors, comprising a stone layer 2, a natural or simulated natural material with a texture, with a thickness ranging from 0.1 to 3 mm. A PV or UV coating 1 with a thickness of 0.002 to 1.2 mm is applied to the upper surface of the stone layer 2. An injection molding layer 3 is disposed beneath the stone layer 2, providing the composite material's basic thickness and strength. The stone layer is secured to the injection molding layer by injection molding. In one embodiment, a convex-concave texture layer is disposed above the coating 1, formed by screen-printing multiple layers of UV ink and drying. The thickness ranges from 0.05 to 0.2 mm, such as 0.1 mm, 0.15 mm, or 0.18 mm. The convex-concave texture layer creates a convex-concave texture on the upper surface of the stone layer 1, enhancing the tactile feel of the composite material for automotive interiors. The pattern and texture of the convex-concave texture layer preferably correspond to the texture of the stone layer, giving the composite material a unique three-dimensional feel.

[0037] The above description of the preferred embodiments of the present invention with reference to the accompanying drawings does not limit the scope of the present invention. Those skilled in the art may implement the present invention in various variations without departing from the scope and spirit of the present invention. For example, features of one embodiment may be applied to another embodiment to obtain yet another embodiment. Any modifications, equivalent substitutions, and improvements made within the technical concept of the present invention shall be within the scope of the present invention.

Claims

1. A composite material for automobile interior decoration, characterized in that include: The stone layer is a natural or natural-looking material with patterns, and the thickness of the stone layer is between 0.1 and 3 mm. The protective layer is a PV or UV coating applied on the upper surface of the stone layer, and the thickness of the coating is 0.002-1.2 mm; as well as an injection molding layer disposed on the lower surface of the stone layer to form a basic thickness and strength of the composite material; Wherein, the stone layer is fixed together with the injection molding layer by injection molding.

2. The composite material for automotive interior decoration according to claim 1, characterized in that: The thickness of the PV coating is 0.01 mm to 1.2 mm, and the thickness of the UV coating is 0.01 mm to 0.5 mm.

3. The composite material for automotive interior decoration according to claim 1, characterized in that: The upper surface of the coating comprises a convex-concave texture layer formed by multi-layer screen printing, the thickness of the convex-concave texture layer is greater than 0.05 mm; the convex-concave texture layer is a UV ink layer.

4. The composite material for automobile interior decoration according to claim 3, characterized in that: The pattern of the convex-concave texture layer corresponds to the grain pattern of the natural or simulated-natural stone layer.

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