Wood-like decorative film for automobile

Abstract

The utility model discloses a wood-like decorative film for an automobile, which comprises a base material layer, an ink layer and a protective layer which are sequentially laminated and connected, and the connecting surface of the ink layer and the base material layer and / or the connecting surface of the ink layer and the protective layer are / is rough surfaces. According to the wood-like decorative film for the automobile, the connecting face of the ink layer and the base material layer and / or the ink layer is arranged to be the rough face, the contact bonding area is increased, the interlayer bonding force is enhanced, the possibility of interlayer separation caused by long-term use and external factors is reduced, then the service life is prolonged, and the use effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of automotive decorative film technology, and in particular to a wood-look decorative film for automobiles. Background Technology

[0002] Automotive INS film is a decorative film widely used in automotive interiors. It is mainly composed of a protective layer, an ink layer, and a substrate layer that are stacked together. The protective layer generally requires good transparency and weather resistance to ensure that the internal ink layer and substrate layer are not damaged. The ink layer can provide the required colors and patterns, including various decorative effects such as wood grain and metal imitation. The substrate layer requires good processing performance and surface gloss to provide support and strength for the entire film.

[0003] In the prior art, Chinese utility model patents such as CN201911227013.1 and CN202111278017.X disclose two types of automotive decorative films, mainly composed of laminated acrylic layers, ink layers, and ABS layers, which have good weather resistance, wear resistance, and ensure the display effect of the appearance pattern. However, in the above-mentioned automotive decorative films, the contact surface between the acrylic layer, ink layer, and ABS layer is limited, resulting in limited bonding force between the layers. After long-term use, or when the composite film is subjected to harsh environments such as high temperature, high humidity, and ultraviolet radiation, the aging is accelerated, or when it is subjected to excessive bending and impact, the layers may separate, shortening the service life of the composite film and affecting the performance.

[0004] Therefore, it is necessary to improve the existing automotive decorative films. Utility Model Content

[0005] The purpose of this invention is to overcome the defects in the existing technology and provide a wood-look decorative film for automobiles that strengthens the interlayer bonding strength, extends the service life, and ensures the performance.

[0006] To achieve the above technical effects, the technical solution of this utility model is as follows: a wood-look decorative film for automobiles, comprising a substrate layer, an ink layer and a protective layer stacked sequentially, wherein the connection surface between the ink layer and the substrate layer and / or the connection surface between the ink layer and the protective layer is a rough surface.

[0007] Preferably, in order to further enhance the interlayer bonding force in the decorative film, the bonding surface between the ink layer and the substrate layer and the bonding surface between the ink layer and the protective layer are both rough surfaces.

[0008] Preferably, in order to ensure the contact area between layers and improve the interlayer bonding force, the connection surface between the ink layer and the substrate layer and the connection surface between the ink layer and the protective layer are densely covered with protrusions and depressions.

[0009] Preferably, in order to increase the surface roughness of the substrate layer, ink layer and protective layer and improve the interlayer adhesion, the protrusion and the depression are respectively raised texture and recessed texture.

[0010] Preferably, in order to facilitate the connection between the ink layer and the substrate layer and the protective layer, the recess includes a first recess and a second recess, wherein the first recess is disposed on the side of the substrate layer adjacent to the ink layer, and the second recess is disposed on the side of the protective layer adjacent to the ink layer.

[0011] Preferably, in order to facilitate the forming of the substrate layer and the protective layer, the substrate layer and the protective layer are respectively processed by one of the following methods: etching, sandblasting, hot pressing, and injection molding.

[0012] Preferably, in order to facilitate the molding of the substrate layer and the protective layer, improve the structural strength of the substrate layer and the protective layer, and increase the overall stiffness of the composite film, the substrate layer includes an outer base layer and an inner base layer stacked between the outer base layer and the ink layer. The inner base layer is densely covered with first through holes, and the hole walls of the first through holes and the outer base layer enclose each other to form a first recess. The protective layer includes an outer protective layer and an inner protective layer stacked between the outer protective layer and the ink layer. The inner protective layer is densely covered with second through holes, and the hole walls of the second through holes and the outer protective layer enclose each other to form a second recess.

[0013] Preferably, in order to increase the bonding strength between the outer base layer and the inner base layer, as well as the bonding strength between the outer sheath and the inner sheath, the outer base layer and the inner base layer are hot-pressed together, and the outer sheath and the inner sheath are hot-pressed together.

[0014] Preferably, in order to ensure the stiffness, weather resistance and wear resistance of the composite decorative film, the substrate layer is an ABS layer or a PC layer, and the protective layer is an acrylic layer.

[0015] In summary, compared with the prior art, the wood-look decorative film for automobiles of this utility model increases the contact bonding area and strengthens the interlayer bonding force by setting the interface between the ink layer and the substrate layer and / or the ink layer to a rough surface, thereby reducing the possibility of interlayer separation caused by long-term use and external factors, thus extending the service life and ensuring the performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the first embodiment;

[0017] Figure 2 yes Figure 1 An explosion diagram;

[0018] Figure 3 This is a schematic diagram of the structure of the second embodiment;

[0019] Figure 4 yes Figure 3 An explosion diagram;

[0020] In the figure: 1. Substrate layer; 11. Outer base layer; 12. Inner base layer; 121. First through hole; 2. Ink layer; 3. Protective layer; 31. Outer protective layer; 32. Inner protective layer; 321. Second through hole. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0022] First Embodiment

[0023] like Figure 1 and Figure 2 As shown, a wood-look decorative film for automobiles according to the first embodiment of the present invention includes a substrate layer 1, an ink layer 2, and a protective layer 3 that are stacked in sequence. The connection surface between the ink layer 2 and the substrate layer 1 and / or the connection surface between the ink layer 2 and the protective layer 3 is a rough surface.

[0024] To further enhance the interlayer bonding in the wood-look decorative film, the bonding surfaces between ink layer 2 and substrate layer 1, and between ink layer 2 and protective layer 3, are both rough surfaces.

[0025] Compared to existing technologies, in this embodiment, the bonding surfaces between the ink layer 2 and the substrate layer 1, and between the ink layer 2 and the protective layer 3, are both rough surfaces. This increases the contact area between the ink layer 2 and the substrate layer 1, as well as the contact area between the ink layer 2 and the protective layer 3, thereby strengthening the bonding force between the ink layer 2 and the substrate layer 1 and the protective layer 3. It also reduces the possibility of interlayer separation between the substrate layer 1, the ink layer 2, and the protective layer 3, extends the service life of the composite film, and ensures good performance.

[0026] A further improvement is that the bonding surfaces of ink layer 2 and substrate layer 1, and ink layer 2 and protective layer 3, are densely covered with protrusions and depressions.

[0027] Specifically, such as Figure 2 As shown, the protrusions are raised textures, which are densely distributed on both sides of the ink layer 2. The depressions are recessed textures, which are densely distributed on the adjacent surfaces of the substrate layer 1 and the ink layer 2, as well as the adjacent surfaces of the protective layer 3 and the ink layer 2. This further increases the surface roughness of the connection between the ink layer 2 and the substrate layer 1, and the connection between the ink layer 2 and the protective layer 3, thereby strengthening the contact area and bonding strength between the ink layer 2 and the substrate layer 1 and the protective layer 3. This effectively prevents the interlayer separation of the decorative film from occurring due to external factors and long-term use, thus ensuring the performance and service life of the decorative film.

[0028] A further improvement is that, in order to form dense grooves on the substrate layer 1 and the protective layer 3, both the substrate layer 1 and the protective layer 3 can be formed by hot pressing or injection molding.

[0029] It should be noted that, in order to increase the roughness and adhesion of the interface between the ink layer 2 and the substrate layer 1 and the protective layer 3, and to prevent interlayer separation, the substrate layer 1 and the protective layer 3 can also be formed by etching or sandblasting. Etching uses a chemical reaction to etch the surface of the substrate layer 1 or the protective layer 3. By controlling the concentration, temperature and etching time of the etchant, the required dense grooves can be formed on the surface of the substrate layer 1 or the protective layer 3. Sandblasting uses a high-speed sandblasting machine to spray abrasive particles onto the surface of the substrate layer 1 or the protective layer 3. Through the impact of the abrasive, grooves are formed on the surface of the substrate layer 1 or the protective layer 3.

[0030] A further improvement is that the substrate layer 1 is an ABS layer to ensure the structural strength of the substrate layer 1, thereby improving the stiffness of the decorative film. Of course, as a replacement for a similar effect, the ABS layer can also be a PC layer; while the protective layer 3 is an acrylic layer, which can ensure the wear resistance and weather resistance of the decorative film, thereby improving the quality of the decorative film.

[0031] Second Embodiment

[0032] like Figure 3 and Figure 4 As shown, the first embodiment of this utility model provides a wood-look decorative film for automobiles. Based on the second embodiment, the difference lies in that the recess includes a first recess and a second recess. The first recess is disposed on the side of the substrate layer 1 adjacent to the ink layer 2, and the second recess is disposed on the side of the protective layer 3 adjacent to the ink layer 2. The substrate layer 1 includes an outer base layer 11 and an inner base layer 12 stacked between the outer base layer 11 and the ink layer 2. The inner base layer 12 is densely covered with first through holes 121, and the hole walls of the first through holes 121 and the outer base layer 11 enclose the first recess. The protective layer 3 includes an outer protective layer 31 and an inner protective layer 32 stacked between the outer protective layer 31 and the ink layer 2. The inner protective layer 32 is densely covered with second through holes 321, and the hole walls of the second through holes 321 and the outer protective layer 31 enclose the second recess.

[0033] This design results in a double-layer structure for both the substrate layer 1 and the protective layer 3, increasing the overall structural strength and stiffness of the decorative film while enhancing its wear resistance. During production, holes can be pre-drilled on the surfaces of the inner base layer 12 and the inner protective layer 32, resulting in a dense network of first through holes 121 on the inner base layer 12 and a dense network of second through holes 321 on the inner protective layer 32. The inner base layer 12 is then heat-pressed to the outer base layer 11 to form the substrate layer 1, which has a dense network of first recesses. Finally, the inner protective layer 32 and the outer protective layer 31 are heat-pressed together to form the protective layer 3. The protective layer 3 is densely covered with second depressions. Then, the side of the substrate layer 1 with the first depressions is placed face to face with the side of the protective layer 3 with the second depressions. Ink is extruded between the two to form an ink layer 2, which connects the protective layer 3 and the substrate layer 1. One side of the ink layer 2 is densely covered with first protrusions corresponding to the first depressions, and the other side is densely covered with second protrusions corresponding to the second depressions. This increases the contact area between the ink layer 2 and the protective layer 3 and the substrate layer 1, enhances the bonding force, prevents the layers from separating from each other, thereby improving product quality and extending the service life of the decorative film.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A wood-like decorative film for a vehicle, characterized in that: it comprises a substrate layer (1), an ink layer (2) and a protective layer (3) connected in sequence, and the connecting surface of the ink layer (2) and the substrate layer (1) and / or the connecting surface of the ink layer (2) and the protective layer (3) is a rough surface. The connecting surface of the ink layer (2) and the substrate layer (1) and the connecting surface of the ink layer (2) and the protective layer (3) are both rough surfaces.

2. The wood-grain decorative film for an automobile according to claim 1, characterized by: The connecting surface of the ink layer (2) and the substrate layer (1) and the connecting surface of the ink layer (2) and the protective layer (3) are densely covered with protrusions and depressions.

3. The wood-grain decorative film for an automobile according to claim 2, characterized by: The protrusions and depressions are respectively ridges and grooves.

4. The wood-grain decorative film for an automobile according to claim 3, characterized by: The depressions include first depressions and second depressions, the first depressions are arranged on the side of the substrate layer (1) adjacent to the ink layer (2), and the second depressions are arranged on the side of the protective layer (3) adjacent to the ink layer (2).

5. The wood-grain decorative film for an automobile according to claim 3, characterized by: The substrate layer (1) and the protective layer (3) are respectively substrate layers (1) and protective layers (3) treated by one of etching, sandblasting, hot pressing, and injection molding.

6. The wood-grain decorative film for an automobile according to claim 5, characterized by: The substrate layer (1) includes an outer base layer (11) and an inner base layer (12) laminated between the outer base layer (11) and the ink layer (2), the inner base layer (12) is densely covered with first through holes (121), and the hole wall of the first through hole (121) and the outer base layer (11) form a first depression; the protective layer (3) includes an outer protective layer (31) and an inner protective layer (32) laminated between the outer protective layer (31) and the ink layer (2), the inner protective layer (32) is densely covered with second through holes (321), and the hole wall of the second through hole (321) and the outer protective layer (31) form a second depression.

7. The wood-grain decorative film for an automobile according to claim 5, characterized by: The outer base layer (11) and the inner base layer (12) are hot-pressed, and the outer protective layer (31) and the inner protective layer (32) are hot-pressed.

8. The wood-grain decorative film for an automobile according to claim 7, characterized by: The substrate layer (1) is an ABS layer or a PC layer, and the protective layer (3) is an acrylic layer.

9. The wood-grain decorative film for an automobile according to any one of claims 1 to 8, characterized by: ​

Images