Automobile decorative cover plate structure with waterproof and oil-proof non-woven fabric

Abstract

The utility model relates to a kind of automobile decorative cover plate structure with waterproof and oil-proof non-woven fabric, belong to automobile decorative cover plate technical field, including decorative cover plate substrate, the outer surface of decorative cover plate substrate is provided with the protective layer structure capable of improving antifouling capacity, the protective layer structure includes the non-woven fabric layer being set to the outer surface of decorative cover plate substrate, the side of non-woven fabric layer away from decorative cover plate substrate is provided with decorative surface layer, the non-woven fabric layer and decorative cover plate substrate between are provided with adhesive layer, the non-woven fabric layer and decorative surface layer between also distribute with adhesive layer. The automobile decorative cover plate structure with waterproof and oil-proof non-woven fabric, decorative surface layer is first blocked liquid diffusion by the surface tension of flocking structure, then the water-repellent and oil-repellent characteristics of non-woven fabric layer form secondary barrier, avoid liquid penetration to decorative cover plate substrate;Waterborne polyurethane adhesive of adhesive layer is tightly combined by intermolecular force each layer, prevent interlayer peeling and lead to protection failure.

Description

Technical Field

[0001] This utility model relates to the field of automotive decorative cover technology, specifically to an automotive decorative cover structure with waterproof and oil-proof non-woven fabric. Background Technology

[0002] Automotive trim covers are components used for the decoration and protection of the interior or exterior of a car. They can protect internal car parts; for example, engine covers prevent dust and debris from entering the engine compartment, reducing engine wear and extending its lifespan. Door trim covers protect internal door components such as window regulators and wiring harnesses from external factors. They also enhance the overall aesthetics of the car, making the interior and exterior look more refined and tidy.

[0003] Chinese utility model patent CN218229150U discloses a decorative cover structure for an automotive front engine compartment. The structure includes a decorative cover body located within the engine compartment. The decorative cover body is composed of decorative sub-plates I and II located on the left and right sides of the engine, respectively, and a main decorative plate located in front of the engine. The main decorative plate is U-shaped, with the engine portion situated within its U-shaped area. Both ends of the main decorative plate are connected one-to-one to decorative sub-plates I and II. This utility model divides the original single-piece front engine compartment decorative cover (the main cover) into three parts: decorative sub-plate I, decorative sub-plate II, and the main decorative plate. These parts correspond to several major component areas within the engine compartment. When a component needs repair, only the corresponding cover plate above that component needs to be removed. This effectively solves the current problem of front engine compartment decorative covers failing to balance aesthetics and ease of maintenance, thus improving the practicality of the front engine compartment decorative cover.

[0004] However, during use, the surface of the decorative cover does not have any protective structure. When the surface of the decorative cover is covered with stains, it is inconvenient for users to clean it, which cannot meet the usage requirements. Therefore, a car decorative cover structure with waterproof and oil-proof non-woven fabric is proposed to solve the above-mentioned problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a car decorative cover structure with waterproof and oil-proof non-woven fabric, which has the advantage of improving the surface protection of the decorative cover. It solves the problem that existing decorative covers do not have any protective structure on their surface, making it inconvenient for users to clean when stains adhere to the surface of the decorative cover, thus failing to meet the usage requirements.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a car decorative cover structure with waterproof and oil-proof non-woven fabric, including a decorative cover substrate, wherein a protective layer structure capable of improving stain resistance is provided on the outer surface of the decorative cover substrate.

[0007] The protective layer structure includes a non-woven fabric layer disposed on the outer surface of the decorative cover plate substrate, and a decorative surface layer is disposed on the side of the non-woven fabric layer away from the decorative cover plate substrate.

[0008] Furthermore, an adhesive layer is provided between the non-woven fabric layer and the decorative cover plate substrate, and an adhesive layer is also distributed between the non-woven fabric layer and the decorative surface layer.

[0009] Furthermore, a composite protective layer is provided on the side of the decorative cover plate substrate away from the non-woven fabric layer. The composite protective layer consists of a base support layer, a buffer layer, an antibacterial and mildew-proof layer, and a heat-insulating and flame-retardant layer.

[0010] Furthermore, the basic support layer is disposed on the side of the decorative cover plate substrate away from the non-woven fabric layer, the heat insulation and flame retardant layer is disposed in the outermost layer of the composite protective layer, and the buffer layer is disposed on the side of the basic support layer away from the decorative cover plate substrate.

[0011] Furthermore, the thickness of the basic support layer is 5.5 mm, and the thickness of the buffer layer is 6 mm.

[0012] Furthermore, the thickness of the antibacterial and antifungal layer is 0.2 mm, and the thickness of the heat-insulating and flame-retardant layer is 4 mm.

[0013] Compared with the prior art, this utility model provides a car decorative cover structure with waterproof and oil-resistant non-woven fabric, which has the following beneficial effects:

[0014] 1. The automotive decorative cover structure with waterproof and oil-resistant non-woven fabric has the following features: the decorative surface layer first blocks liquid diffusion through the surface tension of the flocked structure, and then the water and oil repellency of the non-woven fabric layer forms a secondary barrier to prevent liquid from penetrating to the decorative cover substrate; the water-based polyurethane adhesive of the bonding layer tightly binds the layers together through intermolecular forces to prevent interlayer peeling and protection failure.

[0015] 2. This automotive decorative cover structure, featuring waterproof and oil-resistant non-woven fabric, forms a rigid framework with the hemp fiber composite board of the base support layer and the decorative cover substrate to withstand external loads. The EPP material of the buffer layer absorbs vibration energy through elastic deformation, reducing frictional noise between the cover and the vehicle body sheet metal. The silver ions of the antibacterial and mildew-resistant layer inhibit mold growth in humid environments by disrupting microbial cell membranes. The aerogel material of the heat-insulating and flame-retardant layer blocks heat conduction through nanoscale pores. At the same time, the fiberglass cloth enhances the structure's temperature resistance, delaying the aging effects of high temperatures on internal materials in installation scenarios near the engine compartment. This solves the problem that existing decorative covers lack any protective structure on their surface, making it inconvenient for users to clean when stains adhere to the surface, thus failing to meet usage requirements. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the composite protective layer of this utility model.

[0018] In the diagram: 1. Decorative cover plate substrate; 2. Non-woven fabric layer; 3. Decorative surface layer; 4. Adhesive layer; 5. Composite protective layer; 51. Basic support layer; 52. Buffer layer; 53. Antibacterial and mildew-proof layer; 54. Heat insulation and flame retardant layer. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 This embodiment provides a car decorative cover structure with waterproof and oil-resistant nonwoven fabric, including a decorative cover substrate 1. A protective layer structure that can improve the anti-fouling ability is provided on the outer surface of the decorative cover substrate 1. The protective layer structure includes a nonwoven fabric layer 2 provided on the outer surface of the decorative cover substrate 1, and a decorative surface layer 3 is provided on the side of the nonwoven fabric layer 2 away from the decorative cover substrate 1.

[0021] Specifically, an adhesive layer 4 is provided between the non-woven fabric layer 2 and the decorative cover plate substrate 1, and an adhesive layer 4 is also distributed between the non-woven fabric layer 2 and the decorative surface layer 3.

[0022] It should be noted that the nonwoven layer 2 uses polypropylene spunbond nonwoven fabric as the base material, which is impregnated with fluorocarbon resin water- and oil-repellent finishing agent. The surface contact angle can reach 115°-125°, which can effectively block liquid penetration, while retaining an air permeability of 800-1000mm / s to avoid internal condensation and water accumulation. The decorative cover plate base material 1 is made of modified PP composite material (containing 20% ​​glass fiber reinforcement), with a thickness of 3mm and a bending strength ≥35MPa, providing basic support for the overall structure. The adhesive layer 4 uses water-based polyurethane adhesive with a solid content of 35%-40%, which is uniformly coated by roller coating process (dry film thickness 8-12μm). Its peel strength is ≥2.5N / cm and meets the VOC limit requirements (≤50g / L, meeting GB / T27630 standard). The decorative surface layer 3 is a composite structure of PET printed film and short fiber flocking, with a thickness of 0.3-0.5mm and a flocking density of ≥800 fibers / mm². It maintains the decorative effect (the pattern has a lightfastness of up to UVB300h without significant fading) and enhances the surface friction through the microstructure of the flocking layer (static friction coefficient ≥0.7) to prevent items from sliding.

[0023] Please see Figure 1 and Figure 2 In this embodiment, a composite protective layer 5 is provided on the side of the decorative cover plate substrate 1 away from the non-woven fabric layer 2. The composite protective layer 5 is composed of a base support layer 51, a buffer layer 52, an antibacterial and mildew-proof layer 53, and a heat-insulating and flame-retardant layer 54. The base support layer 51 is provided on the side of the decorative cover plate substrate 1 away from the non-woven fabric layer 2, the heat-insulating and flame-retardant layer 54 is provided in the outermost layer of the composite protective layer 5, and the buffer layer 52 is provided on the side of the base support layer 51 away from the decorative cover plate substrate 1.

[0024] Specifically, the thickness of the base support layer 51 is 5.5 mm, the thickness of the buffer layer 52 is 6 mm, the thickness of the antibacterial and mildew-proof layer 53 is 0.2 mm, and the thickness of the heat-insulating and flame-retardant layer 54 is 4 mm.

[0025] It should be noted that the basic support layer 51 is made of hemp fiber and PP composite board (hemp fiber content 40%), with a density of 0.75g / cm³ and a compressive strength ≥3MPa. Its 5.5mm thickness design meets the load-bearing requirements (can withstand a static load of 300N without deformation) while reducing weight by 25% compared to traditional wood fiberboard. The buffer layer 52 is made of EPP foam material (density 70kg / m³), and its 6mm thickness can achieve 30% compression, with an impact absorption performance ≥60% (test conditions: a 5kg weight dropped from a height of 30cm), effectively reducing bumps and noises during vehicle operation. The antibacterial and anti-mildew layer 53 is made of silver ion-loaded nonwoven fabric (silver ion concentration 500ppm), produced through melt spinning. It has an antibacterial rate of ≥99% against Escherichia coli and Staphylococcus aureus, and retains more than 85% antibacterial activity after aging at 85℃ / 85%RH for 500 hours. The heat-insulating and flame-retardant layer 54 is made of aerogel composite fiberglass cloth with a thermal conductivity of ≤0.02W / (m・K). A thickness of 4mm can reduce heat transfer efficiency by 60%, and it has passed the UL94V-0 flame retardant test (burning time ≤10s, no dripping ignition). The layers are hot-pressed together with a hot melt adhesive film (0.1mm thick) at 120℃ and 0.3MPa, with an interlayer bonding strength ≥1.8N / cm.

[0026] The working principle of the above embodiments is as follows:

[0027] When liquid splashes onto the surface of the decorative cover, the decorative surface layer 3 first blocks the liquid diffusion through the surface tension of the flocked structure. Subsequently, the water- and oil-repellent properties of the non-woven fabric layer 2 form a secondary barrier, preventing the liquid from penetrating into the decorative cover substrate 1. The water-based polyurethane adhesive of the bonding layer 4 tightly bonds the layers through intermolecular forces, preventing interlayer peeling and resulting in protective failure. In terms of structural support, the hemp fiber composite board of the base support layer 51 forms a rigid skeleton with the decorative cover substrate 1 to bear external loads. The EPP material of the buffer layer 52 absorbs vibration energy through elastic deformation, reducing friction noise between the cover and the vehicle body sheet metal. The silver ions of the antibacterial and anti-mildew layer 53 inhibit mold growth in humid environments by destroying the cell membranes of microorganisms (especially suitable for areas prone to water accumulation such as the trunk). The aerogel material of the heat-insulating and flame-retardant layer 54 blocks heat conduction through nanoscale pores, while the glass fiber cloth enhances the structural temperature resistance, delaying the aging effects of high temperatures on internal materials in installation scenarios near the engine compartment. The layers work together to achieve comprehensive functions such as anti-fouling, load-bearing, shock absorption, antibacterial, heat insulation and flame retardancy of the decorative cover, meeting the needs of multiple scenarios in automotive interiors.

[0028] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that can achieve its beneficial effects can be implemented.

[0029] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application 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 application.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A car decorative cover structure with waterproof and oil-resistant nonwoven fabric, comprising a decorative cover substrate (1), characterized in that: The outer surface of the decorative cover plate substrate (1) is provided with a protective layer structure that can improve the anti-fouling ability; The protective layer structure includes a non-woven fabric layer (2) disposed on the outer surface of the decorative cover plate substrate (1), and a decorative surface layer (3) is disposed on the side of the non-woven fabric layer (2) away from the decorative cover plate substrate (1).

2. The automotive decorative cover structure with waterproof and oil-resistant non-woven fabric according to claim 1, characterized in that: An adhesive layer (4) is provided between the nonwoven fabric layer (2) and the decorative cover plate substrate (1), and an adhesive layer (4) is also distributed between the nonwoven fabric layer (2) and the decorative surface layer (3).

3. The automotive decorative cover structure with waterproof and oil-resistant non-woven fabric according to claim 1, characterized in that: The decorative cover plate substrate (1) has a composite protective layer (5) on the side away from the non-woven fabric layer (2). The composite protective layer (5) is composed of a base support layer (51), a buffer layer (52), an antibacterial and mildew-proof layer (53), and a heat-insulating and flame-retardant layer (54).

4. The automotive decorative cover structure with waterproof and oil-resistant non-woven fabric according to claim 3, characterized in that: The basic support layer (51) is disposed on the side of the decorative cover plate substrate (1) away from the non-woven fabric layer (2), the heat insulation and flame retardant layer (54) is disposed in the outermost layer of the composite protective layer (5), and the buffer layer (52) is disposed on the side of the basic support layer (51) away from the decorative cover plate substrate (1).

5. The automotive decorative cover structure with waterproof and oil-resistant non-woven fabric according to claim 3, characterized in that: The thickness of the basic support layer (51) is 5.5 mm, and the thickness of the buffer layer (52) is 6 mm.

6. The automotive decorative cover structure with waterproof and oil-resistant non-woven fabric according to claim 3, characterized in that: The thickness of the antibacterial and mildew-proof layer (53) is 0.2 mm, and the thickness of the heat-insulating and flame-retardant layer (54) is 4 mm.

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